AMERITEC AM5 TRANSMISSION TEST SET REPAIRED The Ameritech Model AM5E Wideband Transmission Test Set is a microprocessor based test instrumnet used to measure transmission impairment on 2 and 4 wire telephone lines in accordance with IEEE Standard 743-1984 (Bell Standard 41009). The instrument contains measurement circuitry able to measure:
level (-65 to + 10 dBm)
Frequency 20 Hz to 110 kHz)
Noise (10 to 100 dBrn)
signal to noise-ratio (10 to 50 dB)
Noise to ground (40 to 130 dBrn)
Impulse Noise (3 level)
2 and 4 wire return loss
The instrument also contains a seperate full function signal generator able to generate the test tones normally used with the above tests.
The instrument contains 4 impedance selections per line, seperate DC hold circuits, pulse, MF, and DTMF signalling, Built-in speaker monitor and talk microphone
The unit operates on 115 or 230 VAC 50/60 Hertz or optional battery pack (sold seperately).