Adtran T1 CSU ACE User Manual download pdf (Page 33)

Chapter 2. Installation

61203022L1-1B T1 CSU ACE User Manual 33

Break-and-Test Jacks

The other four jacks are break-and-test jacks used for out-of-service

testing. These jacks bypass the connections of the modular jacks.

NET IN

and

NET OUT are used to simulate the network input and output of the

T1 CSU ACE. To test the CPE, a T1 Bit Error Rate Test (BERT) test set can

be used to simulate the network.

EQ IN and EQ OUT can be used to sim-

ulate the CPE with a BERT test set, allowing the network to be tested.

The T1 CSU ACE on the other end of the circuit can be looped back to

test only the network. Most BERT test sets have the ability to send LB en-

able and LB clear codes.

The test set’s input impedance must be set for TERM when

connected to the break-and-test jacks.

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Adtran T1 CSU ACE User Manual Page 33