Gentlemen,
This is an exam question that trips up even some of the best students.
See what you make of it!
Q: Is this statement correct: 'The signal level at the modem input
increased by 2dBmV going from +3dBmV to +5dBmV.'
Your pal, CD.
Gentlemen,
This is an exam question that trips up even some of the best students.
See what you make of it!
Q: Is this statement correct: 'The signal level at the modem input
increased by 2dBmV going from +3dBmV to +5dBmV.'
Your pal, CD.
Gentlemen,
This is an exam question that trips up even some of the best students.
See what you make of it!
Q: Is this statement correct: 'The signal level at the modem input
increased by 2dBmV going from +3dBmV to +5dBmV.'
Your pal, CD.
On Wed, 10 Apr 2024 18:02:50 +0100, Cursitor Doom <cd@notformail.com>
wrote:
Gentlemen,
This is an exam question that trips up even some of the best students.
See what you make of it!
Q: Is this statement correct: 'The signal level at the modem input >>increased by 2dBmV going from +3dBmV to +5dBmV.'
Your pal, CD.
5-3=2. dBs, pineapples, whatever.
"Cursitor Doom" <cd@notformail.com> wrote in message >news:c6hd1jdjimga6ifo7b0kv7bqfj9750lbk3@4ax.com...
Gentlemen,
This is an exam question that trips up even some of the best students.
See what you make of it!
Q: Is this statement correct: 'The signal level at the modem input
increased by 2dBmV going from +3dBmV to +5dBmV.'
Your pal, CD.
Changing a signal level can be thought of as multiplying the signal by a >constant.
On Wed, 10 Apr 2024 11:46:02 -0700, john larkin <jl@650pot.com> wrote:
On Wed, 10 Apr 2024 18:02:50 +0100, Cursitor Doom <cd@notformail.com> >>wrote:
Gentlemen,
This is an exam question that trips up even some of the best students. >>>See what you make of it!
Q: Is this statement correct: 'The signal level at the modem input >>>increased by 2dBmV going from +3dBmV to +5dBmV.'
Your pal, CD.
5-3=2. dBs, pineapples, whatever.
Very brave, John! I think the lack of response thus far indicates how >terrified the great and the good here are of getting it wrong, 'cos
those at the top have the farthest to fall in terms of reputation.
I'll provide the answer the same time tomorrow and we'll see if
there's any other brave souls out there. ;-)
On Wed, 10 Apr 2024 15:57:55 -0400, "Edward Rawde"
<invalid@invalid.invalid> wrote:
"Cursitor Doom" <cd@notformail.com> wrote in message >>news:c6hd1jdjimga6ifo7b0kv7bqfj9750lbk3@4ax.com...
Gentlemen,
This is an exam question that trips up even some of the best students.
See what you make of it!
Q: Is this statement correct: 'The signal level at the modem input
increased by 2dBmV going from +3dBmV to +5dBmV.'
Your pal, CD.
Changing a signal level can be thought of as multiplying the signal by a >>constant.
You can change something by adding, too.
"john larkin" <jl@650pot.com> wrote in message >news:v6sd1j1sr89ntc214dku5u5e04pks5toud@4ax.com...
On Wed, 10 Apr 2024 15:57:55 -0400, "Edward Rawde"
<invalid@invalid.invalid> wrote:
"Cursitor Doom" <cd@notformail.com> wrote in message >>>news:c6hd1jdjimga6ifo7b0kv7bqfj9750lbk3@4ax.com...
Gentlemen,
This is an exam question that trips up even some of the best students. >>>> See what you make of it!
Q: Is this statement correct: 'The signal level at the modem input
increased by 2dBmV going from +3dBmV to +5dBmV.'
Your pal, CD.
Changing a signal level can be thought of as multiplying the signal by a >>>constant.
You can change something by adding, too.
I haven't looked at it in detail but a bit of playing with a search engine >finds the question here: >https://broadbandlibrary.com/wise-and-mighty-decibel/
Gentlemen,
This is an exam question that trips up even some of the best students.
See what you make of it!
Q: Is this statement correct: 'The signal level at the modem input
increased by 2dBmV going from +3dBmV to +5dBmV.'
Your pal, CD.
On 4/10/24 19:02, Cursitor Doom wrote:
Gentlemen,
This is an exam question that trips up even some of the best students.
See what you make of it!
Q: Is this statement correct: 'The signal level at the modem input
increased by 2dBmV going from +3dBmV to +5dBmV.'
Your pal, CD.
Haven't we had a discussion about this already some four years ago?
Weren't you Don Kuenz then?
Jeroen Belleman
On Wed, 10 Apr 2024 20:39:19 +0100, Cursitor Doom <cd@notformail.com>
wrote:
On Wed, 10 Apr 2024 11:46:02 -0700, john larkin <jl@650pot.com> wrote:
On Wed, 10 Apr 2024 18:02:50 +0100, Cursitor Doom <cd@notformail.com> >>>wrote:
Gentlemen,
This is an exam question that trips up even some of the best students. >>>>See what you make of it!
Q: Is this statement correct: 'The signal level at the modem input >>>>increased by 2dBmV going from +3dBmV to +5dBmV.'
Your pal, CD.
5-3=2. dBs, pineapples, whatever.
Very brave, John! I think the lack of response thus far indicates how >>terrified the great and the good here are of getting it wrong, 'cos
those at the top have the farthest to fall in terms of reputation.
I'll provide the answer the same time tomorrow and we'll see if
there's any other brave souls out there. ;-)
If I have a meter that shows dBmV, and it says 3 and I crank up the
input so it says 5, it went up by 2.
Do you have a counter-case? 3+2 equals something that's not 5?
"john larkin" <jl@650pot.com> wrote in message >news:v6sd1j1sr89ntc214dku5u5e04pks5toud@4ax.com...
On Wed, 10 Apr 2024 15:57:55 -0400, "Edward Rawde"
<invalid@invalid.invalid> wrote:
"Cursitor Doom" <cd@notformail.com> wrote in message >>>news:c6hd1jdjimga6ifo7b0kv7bqfj9750lbk3@4ax.com...
Gentlemen,
This is an exam question that trips up even some of the best students. >>>> See what you make of it!
Q: Is this statement correct: 'The signal level at the modem input
increased by 2dBmV going from +3dBmV to +5dBmV.'
Your pal, CD.
Changing a signal level can be thought of as multiplying the signal by a >>>constant.
You can change something by adding, too.
I haven't looked at it in detail but a bit of playing with a search engine >finds the question here: >https://broadbandlibrary.com/wise-and-mighty-decibel/
On Wed, 10 Apr 2024 16:11:39 -0400, "Edward Rawde"
<invalid@invalid.invalid> wrote:
"john larkin" <jl@650pot.com> wrote in message >>news:v6sd1j1sr89ntc214dku5u5e04pks5toud@4ax.com...
On Wed, 10 Apr 2024 15:57:55 -0400, "Edward Rawde"
<invalid@invalid.invalid> wrote:
"Cursitor Doom" <cd@notformail.com> wrote in message >>>>news:c6hd1jdjimga6ifo7b0kv7bqfj9750lbk3@4ax.com...
Gentlemen,
This is an exam question that trips up even some of the best students. >>>>> See what you make of it!
Q: Is this statement correct: 'The signal level at the modem input
increased by 2dBmV going from +3dBmV to +5dBmV.'
Your pal, CD.
Changing a signal level can be thought of as multiplying the signal by a >>>>constant.
You can change something by adding, too.
I haven't looked at it in detail but a bit of playing with a search engine >>finds the question here: >>https://broadbandlibrary.com/wise-and-mighty-decibel/
It says that a signal level can never go from 3 dBmV to 5 dBmV. I
think it can.
This is a silly word game.
On Wed, 10 Apr 2024 13:04:10 -0700, john larkin <jl@650pot.com> wrote:
On Wed, 10 Apr 2024 20:39:19 +0100, Cursitor Doom <cd@notformail.com> >>wrote:
On Wed, 10 Apr 2024 11:46:02 -0700, john larkin <jl@650pot.com> wrote:
On Wed, 10 Apr 2024 18:02:50 +0100, Cursitor Doom <cd@notformail.com> >>>>wrote:
Gentlemen,
This is an exam question that trips up even some of the best students. >>>>>See what you make of it!
Q: Is this statement correct: 'The signal level at the modem input >>>>>increased by 2dBmV going from +3dBmV to +5dBmV.'
Your pal, CD.
5-3=2. dBs, pineapples, whatever.
Very brave, John! I think the lack of response thus far indicates how >>>terrified the great and the good here are of getting it wrong, 'cos
those at the top have the farthest to fall in terms of reputation.
I'll provide the answer the same time tomorrow and we'll see if
there's any other brave souls out there. ;-)
If I have a meter that shows dBmV, and it says 3 and I crank up the
input so it says 5, it went up by 2.
Do you have a counter-case? 3+2 equals something that's not 5?
I'm sure I could find someone teaching mathematics like that in our
wonderful modern school system in no time at all LOL.
"Cursitor Doom" <cd@notformail.com> wrote in message >news:i52e1j9ctjqi1k1m9ej1aid2493foetnsq@4ax.com...
On Wed, 10 Apr 2024 16:11:39 -0400, "Edward Rawde"
<invalid@invalid.invalid> wrote:
"john larkin" <jl@650pot.com> wrote in message >>>news:v6sd1j1sr89ntc214dku5u5e04pks5toud@4ax.com...
On Wed, 10 Apr 2024 15:57:55 -0400, "Edward Rawde"
<invalid@invalid.invalid> wrote:
"Cursitor Doom" <cd@notformail.com> wrote in message >>>>>news:c6hd1jdjimga6ifo7b0kv7bqfj9750lbk3@4ax.com...
Gentlemen,
This is an exam question that trips up even some of the best students. >>>>>> See what you make of it!
Q: Is this statement correct: 'The signal level at the modem input >>>>>> increased by 2dBmV going from +3dBmV to +5dBmV.'
Your pal, CD.
Changing a signal level can be thought of as multiplying the signal by a >>>>>constant.
You can change something by adding, too.
I haven't looked at it in detail but a bit of playing with a search engine >>>finds the question here: >>>https://broadbandlibrary.com/wise-and-mighty-decibel/
Jeez, when I said, "No Googling" I didn't seriously think anyone here
would be dumb enough to need to actually do so! :-D
I don't see any mention of any search engine in your first post.
I tend to agree with John Larkin on this.
If a student can use a meter to see that a signal which was 3 somethings is >now 5 somethings (depending on what is being measured) then I give them a >pass.
On Wed, 10 Apr 2024 16:11:39 -0400, "Edward Rawde"
<invalid@invalid.invalid> wrote:
"john larkin" <jl@650pot.com> wrote in message >>news:v6sd1j1sr89ntc214dku5u5e04pks5toud@4ax.com...
On Wed, 10 Apr 2024 15:57:55 -0400, "Edward Rawde"
<invalid@invalid.invalid> wrote:
"Cursitor Doom" <cd@notformail.com> wrote in message >>>>news:c6hd1jdjimga6ifo7b0kv7bqfj9750lbk3@4ax.com...
Gentlemen,
This is an exam question that trips up even some of the best students. >>>>> See what you make of it!
Q: Is this statement correct: 'The signal level at the modem input
increased by 2dBmV going from +3dBmV to +5dBmV.'
Your pal, CD.
Changing a signal level can be thought of as multiplying the signal by a >>>>constant.
You can change something by adding, too.
I haven't looked at it in detail but a bit of playing with a search engine >>finds the question here: >>https://broadbandlibrary.com/wise-and-mighty-decibel/
Jeez, when I said, "No Googling" I didn't seriously think anyone here
would be dumb enough to need to actually do so! :-D
On Wed, 10 Apr 2024 18:18:21 -0400, "Edward Rawde"
<invalid@invalid.invalid> wrote:
"Cursitor Doom" <cd@notformail.com> wrote in message >>news:i52e1j9ctjqi1k1m9ej1aid2493foetnsq@4ax.com...
On Wed, 10 Apr 2024 16:11:39 -0400, "Edward Rawde"
<invalid@invalid.invalid> wrote:
"john larkin" <jl@650pot.com> wrote in message >>>>news:v6sd1j1sr89ntc214dku5u5e04pks5toud@4ax.com...
On Wed, 10 Apr 2024 15:57:55 -0400, "Edward Rawde"
<invalid@invalid.invalid> wrote:
"Cursitor Doom" <cd@notformail.com> wrote in message >>>>>>news:c6hd1jdjimga6ifo7b0kv7bqfj9750lbk3@4ax.com...
Gentlemen,
This is an exam question that trips up even some of the best
students.
See what you make of it!
Q: Is this statement correct: 'The signal level at the modem input >>>>>>> increased by 2dBmV going from +3dBmV to +5dBmV.'
Your pal, CD.
Changing a signal level can be thought of as multiplying the signal by >>>>>>a
constant.
You can change something by adding, too.
I haven't looked at it in detail but a bit of playing with a search >>>>engine
finds the question here: >>>>https://broadbandlibrary.com/wise-and-mighty-decibel/
Jeez, when I said, "No Googling" I didn't seriously think anyone here
would be dumb enough to need to actually do so! :-D
I don't see any mention of any search engine in your first post.
I tend to agree with John Larkin on this.
If a student can use a meter to see that a signal which was 3 somethings
is
now 5 somethings (depending on what is being measured) then I give them a >>pass.
So going back to the orginal question as stated, you're saying the
statement in quotes is *correct* then. Nice to have a straight answer.
Gentlemen,
This is an exam question that trips up even some of the best students.
See what you make of it!
Q: Is this statement correct: 'The signal level at the modem input
increased by 2dBmV going from +3dBmV to +5dBmV.'
Your pal, CD.
On Wed, 10 Apr 2024 23:11:53 +0200, Jeroen Belleman
<jeroen@nospam.please> wrote:
On 4/10/24 19:02, Cursitor Doom wrote:
Gentlemen,
This is an exam question that trips up even some of the best students.
See what you make of it!
Q: Is this statement correct: 'The signal level at the modem input
increased by 2dBmV going from +3dBmV to +5dBmV.'
Your pal, CD.
Haven't we had a discussion about this already some four years ago?
Weren't you Don Kuenz then?
Jeroen Belleman
I don't recall any such discussion and no, I'm not Don Kuenz either.
"Cursitor Doom" <cd@notformail.com> wrote in message >news:cs4e1j5ohhb7fpcmnft14ad6pv66jtvi34@4ax.com...
On Wed, 10 Apr 2024 18:18:21 -0400, "Edward Rawde"
<invalid@invalid.invalid> wrote:
"Cursitor Doom" <cd@notformail.com> wrote in message >>>news:i52e1j9ctjqi1k1m9ej1aid2493foetnsq@4ax.com...
On Wed, 10 Apr 2024 16:11:39 -0400, "Edward Rawde"
<invalid@invalid.invalid> wrote:
"john larkin" <jl@650pot.com> wrote in message >>>>>news:v6sd1j1sr89ntc214dku5u5e04pks5toud@4ax.com...
On Wed, 10 Apr 2024 15:57:55 -0400, "Edward Rawde"
<invalid@invalid.invalid> wrote:
"Cursitor Doom" <cd@notformail.com> wrote in message >>>>>>>news:c6hd1jdjimga6ifo7b0kv7bqfj9750lbk3@4ax.com...
Gentlemen,
This is an exam question that trips up even some of the best
students.
See what you make of it!
Q: Is this statement correct: 'The signal level at the modem input >>>>>>>> increased by 2dBmV going from +3dBmV to +5dBmV.'
Your pal, CD.
Changing a signal level can be thought of as multiplying the signal by >>>>>>>a
constant.
You can change something by adding, too.
I haven't looked at it in detail but a bit of playing with a search >>>>>engine
finds the question here: >>>>>https://broadbandlibrary.com/wise-and-mighty-decibel/
Jeez, when I said, "No Googling" I didn't seriously think anyone here
would be dumb enough to need to actually do so! :-D
I don't see any mention of any search engine in your first post.
I tend to agree with John Larkin on this.
If a student can use a meter to see that a signal which was 3 somethings >>>is
now 5 somethings (depending on what is being measured) then I give them a >>>pass.
So going back to the orginal question as stated, you're saying the
statement in quotes is *correct* then. Nice to have a straight answer.
If you mean that do I think that something increases by 2 when it goes from
3 to 5 then yes that seems reasonable to me.
You can also multiply it by 5/3 to get the same effect if you want. I don't >mind.
On 4/10/24 23:42, Cursitor Doom wrote:
On Wed, 10 Apr 2024 23:11:53 +0200, Jeroen Belleman
<jeroen@nospam.please> wrote:
On 4/10/24 19:02, Cursitor Doom wrote:
Gentlemen,
This is an exam question that trips up even some of the best students. >>>> See what you make of it!
Q: Is this statement correct: 'The signal level at the modem input
increased by 2dBmV going from +3dBmV to +5dBmV.'
Your pal, CD.
Haven't we had a discussion about this already some four years ago?
Weren't you Don Kuenz then?
Jeroen Belleman
I don't recall any such discussion and no, I'm not Don Kuenz either.
Allright then. The statement is wrong. An increase is in dB, not
in dBmV.
On 2024-04-10, Cursitor Doom <cd@notformail.com> wrote:
Gentlemen,
This is an exam question that trips up even some of the best students.
See what you make of it!
Q: Is this statement correct: 'The signal level at the modem input
increased by 2dBmV going from +3dBmV to +5dBmV.'
Your pal, CD.
db is a logarythmic ratio. an increase from +3dBmV to +5dBmV is an increase by 2dB
(not 2dBmV)
Adding 2dBmV to +3dBmV will not get you +5dBmV because it's a
logarythmic scale.
On Thu, 11 Apr 2024 09:50:14 +0200, Jeroen Belleman
<jeroen@nospam.please> wrote:
On 4/10/24 23:42, Cursitor Doom wrote:
On Wed, 10 Apr 2024 23:11:53 +0200, Jeroen Belleman
<jeroen@nospam.please> wrote:
On 4/10/24 19:02, Cursitor Doom wrote:
Gentlemen,
This is an exam question that trips up even some of the best students. >>>>> See what you make of it!
Q: Is this statement correct: 'The signal level at the modem input
increased by 2dBmV going from +3dBmV to +5dBmV.'
Your pal, CD.
Haven't we had a discussion about this already some four years ago?
Weren't you Don Kuenz then?
Jeroen Belleman
I don't recall any such discussion and no, I'm not Don Kuenz either.
Allright then. The statement is wrong. An increase is in dB, not
in dBmV.
Nice, unequivocal answer there, Jeroen; many thanks.
On 11/04/2024 15:16, Jeroen Belleman wrote:
<snip>
If you really want to open a can of worms, consider what might
happen when you *add* a 2dBmV and a 3dBmV signal together.
Granted, dBs weren't invented for making that easy.
Jeroen Belleman
Assuming in-phase, that's 8.535dBmV. Wrong tool for the job.
Gentlemen,
This is an exam question that trips up even some of the best students.
See what you make of it!
Q: Is this statement correct: 'The signal level at the modem input
increased by 2dBmV going from +3dBmV to +5dBmV.'
Your pal, CD.
If you really want to open a can of worms, consider what might
happen when you *add* a 2dBmV and a 3dBmV signal together.
Granted, dBs weren't invented for making that easy.
Jeroen Belleman
On Thu, 11 Apr 2024 16:16:20 +0200, Jeroen Belleman
<jeroen@nospam.please> wrote:
On 4/11/24 14:58, Cursitor Doom wrote:
On Thu, 11 Apr 2024 09:50:14 +0200, Jeroen Belleman
<jeroen@nospam.please> wrote:
On 4/10/24 23:42, Cursitor Doom wrote:
On Wed, 10 Apr 2024 23:11:53 +0200, Jeroen Belleman
<jeroen@nospam.please> wrote:
On 4/10/24 19:02, Cursitor Doom wrote:
Gentlemen,
This is an exam question that trips up even some of the best students. >>>>>>> See what you make of it!
Q: Is this statement correct: 'The signal level at the modem input >>>>>>> increased by 2dBmV going from +3dBmV to +5dBmV.'
Your pal, CD.
Haven't we had a discussion about this already some four years ago? >>>>>> Weren't you Don Kuenz then?
Jeroen Belleman
I don't recall any such discussion and no, I'm not Don Kuenz either.
Allright then. The statement is wrong. An increase is in dB, not
in dBmV.
Nice, unequivocal answer there, Jeroen; many thanks.
If you really want to open a can of worms, consider what might
happen when you *add* a 2dBmV and a 3dBmV signal together.
The sum could be 1 dBmV.
On 4/11/24 14:58, Cursitor Doom wrote:
On Thu, 11 Apr 2024 09:50:14 +0200, Jeroen Belleman
<jeroen@nospam.please> wrote:
On 4/10/24 23:42, Cursitor Doom wrote:
On Wed, 10 Apr 2024 23:11:53 +0200, Jeroen Belleman
<jeroen@nospam.please> wrote:
On 4/10/24 19:02, Cursitor Doom wrote:
Gentlemen,
This is an exam question that trips up even some of the best students. >>>>>> See what you make of it!
Q: Is this statement correct: 'The signal level at the modem input >>>>>> increased by 2dBmV going from +3dBmV to +5dBmV.'
Your pal, CD.
Haven't we had a discussion about this already some four years ago?
Weren't you Don Kuenz then?
Jeroen Belleman
I don't recall any such discussion and no, I'm not Don Kuenz either.
Allright then. The statement is wrong. An increase is in dB, not
in dBmV.
Nice, unequivocal answer there, Jeroen; many thanks.
If you really want to open a can of worms, consider what might
happen when you *add* a 2dBmV and a 3dBmV signal together.
On Thu, 11 Apr 2024 08:15:07 -0700, John Larkin ><jjSNIPlarkin@highNONOlandtechnology.com> wrote:
On Thu, 11 Apr 2024 16:16:20 +0200, Jeroen Belleman
<jeroen@nospam.please> wrote:
On 4/11/24 14:58, Cursitor Doom wrote:
On Thu, 11 Apr 2024 09:50:14 +0200, Jeroen Belleman
<jeroen@nospam.please> wrote:
On 4/10/24 23:42, Cursitor Doom wrote:
On Wed, 10 Apr 2024 23:11:53 +0200, Jeroen BellemanAllright then. The statement is wrong. An increase is in dB, not
<jeroen@nospam.please> wrote:
On 4/10/24 19:02, Cursitor Doom wrote:
Gentlemen,
This is an exam question that trips up even some of the best students. >>>>>>>> See what you make of it!
Q: Is this statement correct: 'The signal level at the modem input >>>>>>>> increased by 2dBmV going from +3dBmV to +5dBmV.'
Your pal, CD.
Haven't we had a discussion about this already some four years ago? >>>>>>> Weren't you Don Kuenz then?
Jeroen Belleman
I don't recall any such discussion and no, I'm not Don Kuenz either. >>>>>
in dBmV.
Nice, unequivocal answer there, Jeroen; many thanks.
If you really want to open a can of worms, consider what might
happen when you *add* a 2dBmV and a 3dBmV signal together.
The sum could be 1 dBmV.
If out of phase, or
If taught by the Nu Mathematics.
On Wed, 10 Apr 2024 21:10:59 -0400, "Edward Rawde"
<invalid@invalid.invalid> wrote:
"Cursitor Doom" <cd@notformail.com> wrote in message >>news:cs4e1j5ohhb7fpcmnft14ad6pv66jtvi34@4ax.com...
On Wed, 10 Apr 2024 18:18:21 -0400, "Edward Rawde"
<invalid@invalid.invalid> wrote:
"Cursitor Doom" <cd@notformail.com> wrote in message >>>>news:i52e1j9ctjqi1k1m9ej1aid2493foetnsq@4ax.com...
On Wed, 10 Apr 2024 16:11:39 -0400, "Edward Rawde"
<invalid@invalid.invalid> wrote:
"john larkin" <jl@650pot.com> wrote in message >>>>>>news:v6sd1j1sr89ntc214dku5u5e04pks5toud@4ax.com...
On Wed, 10 Apr 2024 15:57:55 -0400, "Edward Rawde"
<invalid@invalid.invalid> wrote:
"Cursitor Doom" <cd@notformail.com> wrote in message >>>>>>>>news:c6hd1jdjimga6ifo7b0kv7bqfj9750lbk3@4ax.com...
Gentlemen,
This is an exam question that trips up even some of the best >>>>>>>>> students.
See what you make of it!
Q: Is this statement correct: 'The signal level at the modem input >>>>>>>>> increased by 2dBmV going from +3dBmV to +5dBmV.'
Your pal, CD.
Changing a signal level can be thought of as multiplying the signal by >>>>>>>>a
constant.
You can change something by adding, too.
I haven't looked at it in detail but a bit of playing with a search >>>>>>engine
finds the question here: >>>>>>https://broadbandlibrary.com/wise-and-mighty-decibel/
Jeez, when I said, "No Googling" I didn't seriously think anyone here >>>>> would be dumb enough to need to actually do so! :-D
I don't see any mention of any search engine in your first post.
I tend to agree with John Larkin on this.
If a student can use a meter to see that a signal which was 3 somethings >>>>is
now 5 somethings (depending on what is being measured) then I give them a >>>>pass.
So going back to the orginal question as stated, you're saying the
statement in quotes is *correct* then. Nice to have a straight answer.
If you mean that do I think that something increases by 2 when it goes from >>3 to 5 then yes that seems reasonable to me.
I'm afraid that's not exactly the question, though.
Here's what was asked again:
Q: Is this statement correct: 'The signal level at the modem input
increased by 2dBmV going from +3dBmV to +5dBmV.'
You've already nailed your colours to the mast with your opinion that
the statement is correct. Are you happy with that or would you like to
change your mind?
I'll be posting 'the answer' in about 5 hours' time for those who have
yet to stick their heads above the parapet and might be tempted to >participate. It's been a bit deafeningly quiet so far. ;-)
You can also multiply it by 5/3 to get the same effect if you want. I don't >>mind.
On Thu, 11 Apr 2024 16:16:20 +0200, Jeroen Belleman
<jeroen@nospam.please> wrote:
On 4/11/24 14:58, Cursitor Doom wrote:
On Thu, 11 Apr 2024 09:50:14 +0200, Jeroen Belleman
<jeroen@nospam.please> wrote:
On 4/10/24 23:42, Cursitor Doom wrote:
On Wed, 10 Apr 2024 23:11:53 +0200, Jeroen Belleman
<jeroen@nospam.please> wrote:
On 4/10/24 19:02, Cursitor Doom wrote:
Gentlemen,
This is an exam question that trips up even some of the best students. >>>>>>> See what you make of it!
Q: Is this statement correct: 'The signal level at the modem input >>>>>>> increased by 2dBmV going from +3dBmV to +5dBmV.'
Your pal, CD.
Haven't we had a discussion about this already some four years ago? >>>>>> Weren't you Don Kuenz then?
Jeroen Belleman
I don't recall any such discussion and no, I'm not Don Kuenz either.
Allright then. The statement is wrong. An increase is in dB, not
in dBmV.
Nice, unequivocal answer there, Jeroen; many thanks.
If you really want to open a can of worms, consider what might
happen when you *add* a 2dBmV and a 3dBmV signal together.
The sum could be 1 dBmV.
On Wed, 10 Apr 2024 21:10:59 -0400, "Edward Rawde"
<invalid@invalid.invalid> wrote:
"Cursitor Doom" <cd@notformail.com> wrote in message >>news:cs4e1j5ohhb7fpcmnft14ad6pv66jtvi34@4ax.com...
On Wed, 10 Apr 2024 18:18:21 -0400, "Edward Rawde"
<invalid@invalid.invalid> wrote:
"Cursitor Doom" <cd@notformail.com> wrote in message >>>>news:i52e1j9ctjqi1k1m9ej1aid2493foetnsq@4ax.com...
On Wed, 10 Apr 2024 16:11:39 -0400, "Edward Rawde"
<invalid@invalid.invalid> wrote:
"john larkin" <jl@650pot.com> wrote in message >>>>>>news:v6sd1j1sr89ntc214dku5u5e04pks5toud@4ax.com...
On Wed, 10 Apr 2024 15:57:55 -0400, "Edward Rawde"
<invalid@invalid.invalid> wrote:
"Cursitor Doom" <cd@notformail.com> wrote in message >>>>>>>>news:c6hd1jdjimga6ifo7b0kv7bqfj9750lbk3@4ax.com...
Gentlemen,
This is an exam question that trips up even some of the best >>>>>>>>> students.
See what you make of it!
Q: Is this statement correct: 'The signal level at the modem input >>>>>>>>> increased by 2dBmV going from +3dBmV to +5dBmV.'
Your pal, CD.
Changing a signal level can be thought of as multiplying the signal >>>>>>>>by
a
constant.
You can change something by adding, too.
I haven't looked at it in detail but a bit of playing with a search >>>>>>engine
finds the question here: >>>>>>https://broadbandlibrary.com/wise-and-mighty-decibel/
Jeez, when I said, "No Googling" I didn't seriously think anyone here >>>>> would be dumb enough to need to actually do so! :-D
I don't see any mention of any search engine in your first post.
I tend to agree with John Larkin on this.
If a student can use a meter to see that a signal which was 3 somethings >>>>is
now 5 somethings (depending on what is being measured) then I give them >>>>a
pass.
So going back to the orginal question as stated, you're saying the
statement in quotes is *correct* then. Nice to have a straight answer.
If you mean that do I think that something increases by 2 when it goes
from
3 to 5 then yes that seems reasonable to me.
I'm afraid that's not exactly the question, though.
Here's what was asked again:
Q: Is this statement correct: 'The signal level at the modem input
increased by 2dBmV going from +3dBmV to +5dBmV.'
You've already nailed your colours to the mast with your opinion that
the statement is correct. Are you happy with that or would you like to
change your mind?
I'll be posting 'the answer' in about 5 hours' time for those who have
yet to stick their heads above the parapet and might be tempted to participate. It's been a bit deafeningly quiet so far. ;-)
You can also multiply it by 5/3 to get the same effect if you want. I
don't
mind.
On Thu, 11 Apr 2024 16:20:28 +0100, Cursitor Doom <cd@notformail.com>
wrote:
On Thu, 11 Apr 2024 08:15:07 -0700, John Larkin >><jjSNIPlarkin@highNONOlandtechnology.com> wrote:
On Thu, 11 Apr 2024 16:16:20 +0200, Jeroen Belleman >>><jeroen@nospam.please> wrote:
On 4/11/24 14:58, Cursitor Doom wrote:
On Thu, 11 Apr 2024 09:50:14 +0200, Jeroen Belleman
<jeroen@nospam.please> wrote:
On 4/10/24 23:42, Cursitor Doom wrote:
On Wed, 10 Apr 2024 23:11:53 +0200, Jeroen BellemanAllright then. The statement is wrong. An increase is in dB, not
<jeroen@nospam.please> wrote:
On 4/10/24 19:02, Cursitor Doom wrote:
Gentlemen,
This is an exam question that trips up even some of the best >>>>>>>>> students.
See what you make of it!
Q: Is this statement correct: 'The signal level at the modem input >>>>>>>>> increased by 2dBmV going from +3dBmV to +5dBmV.'
Your pal, CD.
Haven't we had a discussion about this already some four years ago? >>>>>>>> Weren't you Don Kuenz then?
Jeroen Belleman
I don't recall any such discussion and no, I'm not Don Kuenz either. >>>>>>
in dBmV.
Nice, unequivocal answer there, Jeroen; many thanks.
If you really want to open a can of worms, consider what might
happen when you *add* a 2dBmV and a 3dBmV signal together.
The sum could be 1 dBmV.
If out of phase, or
If taught by the Nu Mathematics.
What is -2 volts in dBmV?
"Cursitor Doom" <cd@notformail.com> wrote in message >news:76nf1j9j04rknbh5kgta74nteeeht3303n@4ax.com...
On Wed, 10 Apr 2024 21:10:59 -0400, "Edward Rawde"
<invalid@invalid.invalid> wrote:
"Cursitor Doom" <cd@notformail.com> wrote in message >>>news:cs4e1j5ohhb7fpcmnft14ad6pv66jtvi34@4ax.com...
On Wed, 10 Apr 2024 18:18:21 -0400, "Edward Rawde"
<invalid@invalid.invalid> wrote:
"Cursitor Doom" <cd@notformail.com> wrote in message >>>>>news:i52e1j9ctjqi1k1m9ej1aid2493foetnsq@4ax.com...
On Wed, 10 Apr 2024 16:11:39 -0400, "Edward Rawde"
<invalid@invalid.invalid> wrote:
"john larkin" <jl@650pot.com> wrote in message >>>>>>>news:v6sd1j1sr89ntc214dku5u5e04pks5toud@4ax.com...
On Wed, 10 Apr 2024 15:57:55 -0400, "Edward Rawde"
<invalid@invalid.invalid> wrote:
"Cursitor Doom" <cd@notformail.com> wrote in message >>>>>>>>>news:c6hd1jdjimga6ifo7b0kv7bqfj9750lbk3@4ax.com...
Gentlemen,
This is an exam question that trips up even some of the best >>>>>>>>>> students.
See what you make of it!
Q: Is this statement correct: 'The signal level at the modem input >>>>>>>>>> increased by 2dBmV going from +3dBmV to +5dBmV.'
Your pal, CD.
Changing a signal level can be thought of as multiplying the signal >>>>>>>>>by
a
constant.
You can change something by adding, too.
I haven't looked at it in detail but a bit of playing with a search >>>>>>>engine
finds the question here: >>>>>>>https://broadbandlibrary.com/wise-and-mighty-decibel/
Jeez, when I said, "No Googling" I didn't seriously think anyone here >>>>>> would be dumb enough to need to actually do so! :-D
I don't see any mention of any search engine in your first post.
I tend to agree with John Larkin on this.
If a student can use a meter to see that a signal which was 3 somethings >>>>>is
now 5 somethings (depending on what is being measured) then I give them >>>>>a
pass.
So going back to the orginal question as stated, you're saying the
statement in quotes is *correct* then. Nice to have a straight answer.
If you mean that do I think that something increases by 2 when it goes >>>from
3 to 5 then yes that seems reasonable to me.
I'm afraid that's not exactly the question, though.
Here's what was asked again:
Q: Is this statement correct: 'The signal level at the modem input
increased by 2dBmV going from +3dBmV to +5dBmV.'
You've already nailed your colours to the mast with your opinion that
the statement is correct. Are you happy with that or would you like to
change your mind?
What's wrong with the mind I already have?
My opinion is in my first reply to you.
Do the students who take this exam do any practical work or just sit in >class?
Gentlemen,
This is an exam question that trips up even some of the best students.
See what you make of it!
Q: Is this statement correct: 'The signal level at the modem input
increased by 2dBmV going from +3dBmV to +5dBmV.'
Your pal, CD.
On Thu, 11 Apr 2024 11:58:02 -0400, "Edward Rawde"
<invalid@invalid.invalid> wrote:
"Cursitor Doom" <cd@notformail.com> wrote in message >>news:76nf1j9j04rknbh5kgta74nteeeht3303n@4ax.com...
On Wed, 10 Apr 2024 21:10:59 -0400, "Edward Rawde"
<invalid@invalid.invalid> wrote:
"Cursitor Doom" <cd@notformail.com> wrote in message >>>>news:cs4e1j5ohhb7fpcmnft14ad6pv66jtvi34@4ax.com...
On Wed, 10 Apr 2024 18:18:21 -0400, "Edward Rawde"If you mean that do I think that something increases by 2 when it goes >>>>from
<invalid@invalid.invalid> wrote:
"Cursitor Doom" <cd@notformail.com> wrote in message >>>>>>news:i52e1j9ctjqi1k1m9ej1aid2493foetnsq@4ax.com...
On Wed, 10 Apr 2024 16:11:39 -0400, "Edward Rawde"
<invalid@invalid.invalid> wrote:
"john larkin" <jl@650pot.com> wrote in message >>>>>>>>news:v6sd1j1sr89ntc214dku5u5e04pks5toud@4ax.com...
On Wed, 10 Apr 2024 15:57:55 -0400, "Edward Rawde"
<invalid@invalid.invalid> wrote:
"Cursitor Doom" <cd@notformail.com> wrote in message >>>>>>>>>>news:c6hd1jdjimga6ifo7b0kv7bqfj9750lbk3@4ax.com...
Gentlemen,
This is an exam question that trips up even some of the best >>>>>>>>>>> students.
See what you make of it!
Q: Is this statement correct: 'The signal level at the modem >>>>>>>>>>> input
increased by 2dBmV going from +3dBmV to +5dBmV.'
Your pal, CD.
Changing a signal level can be thought of as multiplying the >>>>>>>>>>signal
by
a
constant.
You can change something by adding, too.
I haven't looked at it in detail but a bit of playing with a search >>>>>>>>engine
finds the question here: >>>>>>>>https://broadbandlibrary.com/wise-and-mighty-decibel/
Jeez, when I said, "No Googling" I didn't seriously think anyone >>>>>>> here
would be dumb enough to need to actually do so! :-D
I don't see any mention of any search engine in your first post.
I tend to agree with John Larkin on this.
If a student can use a meter to see that a signal which was 3 >>>>>>somethings
is
now 5 somethings (depending on what is being measured) then I give >>>>>>them
a
pass.
So going back to the orginal question as stated, you're saying the
statement in quotes is *correct* then. Nice to have a straight answer. >>>>
3 to 5 then yes that seems reasonable to me.
I'm afraid that's not exactly the question, though.
Here's what was asked again:
Q: Is this statement correct: 'The signal level at the modem input
increased by 2dBmV going from +3dBmV to +5dBmV.'
You've already nailed your colours to the mast with your opinion that
the statement is correct. Are you happy with that or would you like to
change your mind?
What's wrong with the mind I already have?
My opinion is in my first reply to you.
Do the students who take this exam do any practical work or just sit in >>class?
They're students so of course they don't do anything useful.
On Wed, 10 Apr 2024 18:02:50 +0100, Cursitor Doom <cd@notformail.com>
wrote:
Gentlemen,
This is an exam question that trips up even some of the best students.
See what you make of it!
Q: Is this statement correct: 'The signal level at the modem input >>increased by 2dBmV going from +3dBmV to +5dBmV.'
Your pal, CD.
Okay, here's the answer you've been waiting for from some guy on the
internet in this record-low participation quiz. This URL takes you
directly to the relevant section to save time:
https://youtu.be/jOVa4xJSLiA?list=PLl-kpmJ-_T4DMeDalokqXz7u-ReHZi08p&t=1466
So it turns out that John, Edward and myself were all wrong and only
Jason and Jeroen were right! And the proof is right there in the
video.
On Wed, 10 Apr 2024 18:02:50 +0100, Cursitor Doom <cd@notformail.com>
wrote:
Gentlemen,
This is an exam question that trips up even some of the best students.
See what you make of it!
Q: Is this statement correct: 'The signal level at the modem input >>increased by 2dBmV going from +3dBmV to +5dBmV.'
Your pal, CD.
Okay, here's the answer you've been waiting for from some guy on the
internet in this record-low participation quiz. This URL takes you
directly to the relevant section to save time:
https://youtu.be/jOVa4xJSLiA?list=PLl-kpmJ-_T4DMeDalokqXz7u-ReHZi08p&t=1466
So it turns out that John, Edward and myself were all wrong and only
Jason and Jeroen were right! And the proof is right there in the
video.
"Cursitor Doom" <cd@notformail.com> wrote in message >news:pk8g1j9u6joiofssfcg9g9qed1lcikluta@4ax.com...
On Thu, 11 Apr 2024 11:58:02 -0400, "Edward Rawde"
<invalid@invalid.invalid> wrote:
"Cursitor Doom" <cd@notformail.com> wrote in message >>>news:76nf1j9j04rknbh5kgta74nteeeht3303n@4ax.com...
On Wed, 10 Apr 2024 21:10:59 -0400, "Edward Rawde"
<invalid@invalid.invalid> wrote:
"Cursitor Doom" <cd@notformail.com> wrote in message >>>>>news:cs4e1j5ohhb7fpcmnft14ad6pv66jtvi34@4ax.com...
On Wed, 10 Apr 2024 18:18:21 -0400, "Edward Rawde"If you mean that do I think that something increases by 2 when it goes >>>>>from
<invalid@invalid.invalid> wrote:
"Cursitor Doom" <cd@notformail.com> wrote in message >>>>>>>news:i52e1j9ctjqi1k1m9ej1aid2493foetnsq@4ax.com...
On Wed, 10 Apr 2024 16:11:39 -0400, "Edward Rawde"
<invalid@invalid.invalid> wrote:
"john larkin" <jl@650pot.com> wrote in message >>>>>>>>>news:v6sd1j1sr89ntc214dku5u5e04pks5toud@4ax.com...
On Wed, 10 Apr 2024 15:57:55 -0400, "Edward Rawde"
<invalid@invalid.invalid> wrote:
"Cursitor Doom" <cd@notformail.com> wrote in message >>>>>>>>>>>news:c6hd1jdjimga6ifo7b0kv7bqfj9750lbk3@4ax.com...
Gentlemen,
This is an exam question that trips up even some of the best >>>>>>>>>>>> students.
See what you make of it!
Q: Is this statement correct: 'The signal level at the modem >>>>>>>>>>>> input
increased by 2dBmV going from +3dBmV to +5dBmV.'
Your pal, CD.
Changing a signal level can be thought of as multiplying the >>>>>>>>>>>signal
by
a
constant.
You can change something by adding, too.
I haven't looked at it in detail but a bit of playing with a search >>>>>>>>>engine
finds the question here: >>>>>>>>>https://broadbandlibrary.com/wise-and-mighty-decibel/
Jeez, when I said, "No Googling" I didn't seriously think anyone >>>>>>>> here
would be dumb enough to need to actually do so! :-D
I don't see any mention of any search engine in your first post.
I tend to agree with John Larkin on this.
If a student can use a meter to see that a signal which was 3 >>>>>>>somethings
is
now 5 somethings (depending on what is being measured) then I give >>>>>>>them
a
pass.
So going back to the orginal question as stated, you're saying the >>>>>> statement in quotes is *correct* then. Nice to have a straight answer. >>>>>
3 to 5 then yes that seems reasonable to me.
I'm afraid that's not exactly the question, though.
Here's what was asked again:
Q: Is this statement correct: 'The signal level at the modem input
increased by 2dBmV going from +3dBmV to +5dBmV.'
You've already nailed your colours to the mast with your opinion that
the statement is correct. Are you happy with that or would you like to >>>> change your mind?
What's wrong with the mind I already have?
My opinion is in my first reply to you.
Do the students who take this exam do any practical work or just sit in >>>class?
They're students so of course they don't do anything useful.
Is that because you don't teach them how to do anything useful or because >they don't want to be taught how do anything useful?
"Cursitor Doom" <cd@notformail.com> wrote in message >news:ar1g1jdn81s994gd5brslvrrlns8jrtq13@4ax.com...
On Wed, 10 Apr 2024 18:02:50 +0100, Cursitor Doom <cd@notformail.com>
wrote:
Gentlemen,
This is an exam question that trips up even some of the best students. >>>See what you make of it!
Q: Is this statement correct: 'The signal level at the modem input >>>increased by 2dBmV going from +3dBmV to +5dBmV.'
Your pal, CD.
Okay, here's the answer you've been waiting for from some guy on the
internet in this record-low participation quiz. This URL takes you
directly to the relevant section to save time:
https://youtu.be/jOVa4xJSLiA?list=PLl-kpmJ-_T4DMeDalokqXz7u-ReHZi08p&t=1466 >>
So it turns out that John, Edward and myself were all wrong and only
Jason and Jeroen were right! And the proof is right there in the
video.
I don't see any proof of anything in the section of the video you posted.
I didn't watch the entire video.
Maybe you should post the proof for this example in text and ask why a 30 >minute video is needed if a few lines of text is enough.
DOCSIS isn't my field but I would have thought that the average cable modem >could report whether or not it's happy with the signal levels.
The ISP/Cable company I use ripped the cable and phone lines out and put >fibre to the home into the small town I live in about a year ago.
So DOCSIS is history here.
On Thu, 11 Apr 2024 14:33:45 -0400, "Edward Rawde"
<invalid@invalid.invalid> wrote:
"Cursitor Doom" <cd@notformail.com> wrote in message >>news:ar1g1jdn81s994gd5brslvrrlns8jrtq13@4ax.com...
On Wed, 10 Apr 2024 18:02:50 +0100, Cursitor Doom <cd@notformail.com>
wrote:
Gentlemen,
This is an exam question that trips up even some of the best students. >>>>See what you make of it!
Q: Is this statement correct: 'The signal level at the modem input >>>>increased by 2dBmV going from +3dBmV to +5dBmV.'
Your pal, CD.
Okay, here's the answer you've been waiting for from some guy on the
internet in this record-low participation quiz. This URL takes you
directly to the relevant section to save time:
https://youtu.be/jOVa4xJSLiA?list=PLl-kpmJ-_T4DMeDalokqXz7u-ReHZi08p&t=1466 >>>
So it turns out that John, Edward and myself were all wrong and only
Jason and Jeroen were right! And the proof is right there in the
video.
I don't see any proof of anything in the section of the video you posted.
I didn't watch the entire video.
Maybe you should post the proof for this example in text and ask why a 30 >>minute video is needed if a few lines of text is enough.
DOCSIS isn't my field but I would have thought that the average cable
modem
could report whether or not it's happy with the signal levels.
The ISP/Cable company I use ripped the cable and phone lines out and put >>fibre to the home into the small town I live in about a year ago.
So DOCSIS is history here.
Sorry, sarcasm doesn't come across very well at all via this medium!
John knows what I mean as we're both veterans here. I actually agree
with you. The question itself is just plain stupid if the answer
suggests that two absolute quantities added together cannot make an
absolute total.
"Cursitor Doom" <cd@notformail.com> wrote in message >news:qjbg1jh7baj22i618rcafvo80rcgcm7ojn@4ax.com...
On Thu, 11 Apr 2024 14:33:45 -0400, "Edward Rawde"
<invalid@invalid.invalid> wrote:
"Cursitor Doom" <cd@notformail.com> wrote in message >>>news:ar1g1jdn81s994gd5brslvrrlns8jrtq13@4ax.com...
On Wed, 10 Apr 2024 18:02:50 +0100, Cursitor Doom <cd@notformail.com>
wrote:
Gentlemen,
This is an exam question that trips up even some of the best students. >>>>>See what you make of it!
Q: Is this statement correct: 'The signal level at the modem input >>>>>increased by 2dBmV going from +3dBmV to +5dBmV.'
Your pal, CD.
Okay, here's the answer you've been waiting for from some guy on the
internet in this record-low participation quiz. This URL takes you
directly to the relevant section to save time:
https://youtu.be/jOVa4xJSLiA?list=PLl-kpmJ-_T4DMeDalokqXz7u-ReHZi08p&t=1466
So it turns out that John, Edward and myself were all wrong and only
Jason and Jeroen were right! And the proof is right there in the
video.
I don't see any proof of anything in the section of the video you posted. >>>I didn't watch the entire video.
Maybe you should post the proof for this example in text and ask why a 30 >>>minute video is needed if a few lines of text is enough.
DOCSIS isn't my field but I would have thought that the average cable >>>modem
could report whether or not it's happy with the signal levels.
The ISP/Cable company I use ripped the cable and phone lines out and put >>>fibre to the home into the small town I live in about a year ago.
So DOCSIS is history here.
Sorry, sarcasm doesn't come across very well at all via this medium!
John knows what I mean as we're both veterans here. I actually agree
with you. The question itself is just plain stupid if the answer
suggests that two absolute quantities added together cannot make an
absolute total.
Pompous twit might be going a bit far but that's what came to mind while I >watched a few minutes of the video.
The guy with the headphones seems embarrassed.
I did manage to find this >https://www.scte.org/standards/library/catalog/scte-270-mathematics-of-cable/ >I'll add it to my collection of pdfs I've had a quick look through but never >read.
On Thu, 11 Apr 2024 14:02:56 -0400, "Edward Rawde"
<invalid@invalid.invalid> wrote:
"Cursitor Doom" <cd@notformail.com> wrote in message
news:pk8g1j9u6joiofssfcg9g9qed1lcikluta@4ax.com...
On Thu, 11 Apr 2024 11:58:02 -0400, "Edward Rawde"
<invalid@invalid.invalid> wrote:
"Cursitor Doom" <cd@notformail.com> wrote in message
news:76nf1j9j04rknbh5kgta74nteeeht3303n@4ax.com...
On Wed, 10 Apr 2024 21:10:59 -0400, "Edward Rawde"
<invalid@invalid.invalid> wrote:
"Cursitor Doom" <cd@notformail.com> wrote in message
news:cs4e1j5ohhb7fpcmnft14ad6pv66jtvi34@4ax.com...
On Wed, 10 Apr 2024 18:18:21 -0400, "Edward Rawde"If you mean that do I think that something increases by 2 when it goes >>>>>> from
<invalid@invalid.invalid> wrote:
"Cursitor Doom" <cd@notformail.com> wrote in message
news:i52e1j9ctjqi1k1m9ej1aid2493foetnsq@4ax.com...
On Wed, 10 Apr 2024 16:11:39 -0400, "Edward Rawde"
<invalid@invalid.invalid> wrote:
"john larkin" <jl@650pot.com> wrote in message
news:v6sd1j1sr89ntc214dku5u5e04pks5toud@4ax.com...
On Wed, 10 Apr 2024 15:57:55 -0400, "Edward Rawde"
<invalid@invalid.invalid> wrote:
"Cursitor Doom" <cd@notformail.com> wrote in message
news:c6hd1jdjimga6ifo7b0kv7bqfj9750lbk3@4ax.com...
Gentlemen,
This is an exam question that trips up even some of the best >>>>>>>>>>>>> students.
See what you make of it!
Q: Is this statement correct: 'The signal level at the modem >>>>>>>>>>>>> input
increased by 2dBmV going from +3dBmV to +5dBmV.'
Your pal, CD.
Changing a signal level can be thought of as multiplying the >>>>>>>>>>>> signal
by
a
constant.
You can change something by adding, too.
I haven't looked at it in detail but a bit of playing with a search >>>>>>>>>> engine
finds the question here:
https://broadbandlibrary.com/wise-and-mighty-decibel/
Jeez, when I said, "No Googling" I didn't seriously think anyone >>>>>>>>> here
would be dumb enough to need to actually do so! :-D
I don't see any mention of any search engine in your first post. >>>>>>>>
I tend to agree with John Larkin on this.
If a student can use a meter to see that a signal which was 3
somethings
is
now 5 somethings (depending on what is being measured) then I give >>>>>>>> them
a
pass.
So going back to the orginal question as stated, you're saying the >>>>>>> statement in quotes is *correct* then. Nice to have a straight answer. >>>>>>
3 to 5 then yes that seems reasonable to me.
I'm afraid that's not exactly the question, though.
Here's what was asked again:
Q: Is this statement correct: 'The signal level at the modem input
increased by 2dBmV going from +3dBmV to +5dBmV.'
You've already nailed your colours to the mast with your opinion that >>>>> the statement is correct. Are you happy with that or would you like to >>>>> change your mind?
What's wrong with the mind I already have?
My opinion is in my first reply to you.
Do the students who take this exam do any practical work or just sit in >>>> class?
They're students so of course they don't do anything useful.
Is that because you don't teach them how to do anything useful or because
they don't want to be taught how do anything useful?
Sorry, you're new here so you don't know who's who yet. I'm not a
professor - far from it! And these are hypothetical students.
On Thu, 11 Apr 2024 06:38:30 -0000 (UTC), Jasen Betts
<usenet@revmaps.no-ip.org> wrote:
On 2024-04-10, Cursitor Doom <cd@notformail.com> wrote:
Gentlemen,
This is an exam question that trips up even some of the best students.
See what you make of it!
Q: Is this statement correct: 'The signal level at the modem input
increased by 2dBmV going from +3dBmV to +5dBmV.'
Your pal, CD.
db is a logarythmic ratio. an increase from +3dBmV to +5dBmV is an increase by 2dB
(not 2dBmV)
Adding 2dBmV to +3dBmV will not get you +5dBmV because it's a
logarythmic scale.
The question does require a "correct/incorrect" answer. It's a binary
choice. Your answer is....?
On 2024-04-11, Cursitor Doom <cd@notformail.com> wrote:
On Thu, 11 Apr 2024 06:38:30 -0000 (UTC), Jasen Betts
<usenet@revmaps.no-ip.org> wrote:
On 2024-04-10, Cursitor Doom <cd@notformail.com> wrote:
Gentlemen,
This is an exam question that trips up even some of the best students. >>>> See what you make of it!
Q: Is this statement correct: 'The signal level at the modem input
increased by 2dBmV going from +3dBmV to +5dBmV.'
Your pal, CD.
db is a logarythmic ratio. an increase from +3dBmV to +5dBmV is an increase by 2dB
(not 2dBmV)
Adding 2dBmV to +3dBmV will not get you +5dBmV because it's a
logarythmic scale.
The question does require a "correct/incorrect" answer. It's a binary
choice. Your answer is....?
My answer is still "db is a logarythmic ratio. an increase from +3dBmV to +5dBmV is
an increase by 2dB"
On 4/12/24 08:15, Jasen Betts wrote:
On 2024-04-11, Cursitor Doom <cd@notformail.com> wrote:
On Thu, 11 Apr 2024 06:38:30 -0000 (UTC), Jasen Betts
<usenet@revmaps.no-ip.org> wrote:
On 2024-04-10, Cursitor Doom <cd@notformail.com> wrote:
Gentlemen,
This is an exam question that trips up even some of the best students. >>>>> See what you make of it!
Q: Is this statement correct: 'The signal level at the modem input
increased by 2dBmV going from +3dBmV to +5dBmV.'
Your pal, CD.
db is a logarythmic ratio. an increase from +3dBmV to +5dBmV is an increase by 2dB
(not 2dBmV)
Adding 2dBmV to +3dBmV will not get you +5dBmV because it's a
logarythmic scale.
The question does require a "correct/incorrect" answer. It's a binary
choice. Your answer is....?
My answer is still "db is a logarythmic ratio. an increase from +3dBmV to +5dBmV is
an increase by 2dB"
It's "logarithmic".
Jeroen Belleman
On Fri, 12 Apr 2024 09:56:51 +0200, Jeroen Belleman <jeroen@nospam.please> wrote:
On 4/12/24 08:15, Jasen Betts wrote:
On 2024-04-11, Cursitor Doom <cd@notformail.com> wrote:
On Thu, 11 Apr 2024 06:38:30 -0000 (UTC), Jasen Betts <usenet@revmaps.no-ip.org> wrote:
On 2024-04-10, Cursitor Doom <cd@notformail.com> wrote:
I'm sorry, but that's the *wrong* answer. The answer needs to be
either "correct" or "incorrect" according to that guy on the internet
who obviously knows what he's talking about or he wouldn't have been
speaking on the subject on Youtube.
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