Harris Constellation - DS1 Tributary Loopback Tests; DS1 Tributary Loopback; Figure 5-2: DS1 Tributary Loopback Test

Harris Corporation Constellation™
Loopback Testing 5-3
LOOPBACK TESTING
DS1 Tributary Loopback Tests
DS1 Tributary Loopback
Customer test equipment is required for this test. This test loops back the signal
from the local terminal to the far end. See
Figure 5-2 .
From the Keypad, select
CONTROL > TRIB LOOPBACK
Figure 5-2: DS1 tributary loopback test
Transmitter
Assembly
HLM
Modem
ACU
Receiver
Assembly
Tran s mi tte r
Assembly
HLM
Modem
ACU
Receiver
Assembly
Local Terminal
Remote Terminal
Customer
test set
Signal loopback
at DS1 level
M12
Unit
M12
Unit