J
Jack// ani
Hi there,
How to measure it??
TIA
How to measure it??
TIA
Few confusion....as usual
Why only 1Khz...not something else, like voice signal? How to seperate
voice signal and the noise signal?
Jack// ani said:Few confusion....as usual
Why only 1Khz...not something else, like voice signal? How to seperate
voice signal and the noise signal?
Nothing more than a DMM and PCScope!! How should I proceed next.....
Use your computer as a signal generator. Have it put the tone in the
speakers. Put your cell phone in front of the computer speakers. Call
your home phone. Record the received waveform at the earpiece (gator
clips?). Analyze the recorded wave.
I was wondering how to send 1Khz signal on my own line.......your post
left no more confusion now!!!
Thanks a lot
Use your computer as a signal generator. Have it put the tone in the
speakers. Put your cell phone in front of the computer speakers. Call
your home phone. Record the received waveform at the earpiece (gator
clips?). Analyze the recorded wave.
You're welcome. To clarify further, the test tone is typically
produced by a device at the CO called a 'Test Line Responder.' It is
designed to, upon various commands (usually by TouchTone signaling),
produce test tones of varying frequency and intensity. It is usually set
for a 1kHz reference tone by default.
The most common one for your purposes would be 1kHz (1004Hz, to be
exact), injected at a level of 0dBm from the central office. This will
allow you to take very accurate readings (assuming the correct test
gear) of your line's loss and noise levels.
The best way I've found to obtain test numbers is to (politely!)
ask a telco field person. Technically, they're not supposed to give
those out, but I've run into many that do if they detect a kindred
techie-spirit in you.
Happy hunting.