The TEST PERIOD Key
This key selects the test time frames. There are five test time frames listed as follows. At the end of the
test time frame, all alarm counters and alarm records will be frozen. The records can be displayed by
pressing the RESULT category key with the HISTORY selection.
TEST PERIOD
cont (continuous mode)
♦
♦
♦
♦
♦
15 (15 minutes mode)
30 (30 minutes mode)
60 (60 minutes mode)
12HR (12 hours mode)
The ERROR Key
This key inserts alarms and errors into the outgoing E1 data stream for testing purpose.
ERROR __________ ALARM _________ AIS
___ SAIS
___ RA
_____ ERROR __________ LOGIC
___ SINGLE
___ RATE
AIS - unframed all ones to be transmitted.
SAIS - signaling all ones
RA - Remote Alarm
Logic Single selection: generate single bit error.
Logic error rate selection: 1E-1, 1E-2, 1E-3, 1E-4, 1E-5, 1E-6 and 1E-7.
The INPUT Key
This key contains the selections for E1 signal interface set-ups.
INPUT _______ LIU ________ TERM
____ DSX
____ BRIDGE
___ CLOCK _____ LOCAL
____ REMOTE (LINE)
LIU (Line Interface Unit)
1. TERM (Default): E1 input with a 120ohm termination. The tester at this mode accepts an E1
signal attenuated b6 dB and -43 dB due to cable loss.
2. DSX: E1 input with a 120ohm termination. A 6 dB gain is added to compensate the input signal
loss due to the loss at the DSX-Monitor ports.
3. BRIDGE: E1 input with a high impedance for use in monitoring E1 signals without altering the E1
signal.
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