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T1 Transmitter Clock Source
• Internal - from TCXO 3ppm
• Recovered - from Receive Data Rx
• External – from 0-5V TTL clock source
T1 Line Termination Type
• Termination - 120 Ohm, 100 Ohm, 75 Ohm, Tx and Rx software switchable
• Bridge – Input Rx impedance > 1kOhm, intended for monitoring T1 line on
• the outside plant circuit.
• DSX Monitor – 120/100 0r 75 Ohm termination on DSX test point. Typically
• provides 20 dB of attenuation across a 100 Ohm resistive load.
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