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76
Installation and Verification Manual
3
Performance Tests
Connect the PDH/DSn Test Set CLOCK REF OUT or
TRANSMIT CLOCK OUT port to the instrument’s CLOCK IN
2MHz BNC port.
4
Set the PDH/DSn Test Set Transmitter as follows.
SIGNAL to 2 Mb/s rate
CLOCK to EXTERNAL 10 MHz REF
5
Check that the PDH/DSn Test Set CLOCK LOSS Alarm Led is
not lit.
6
Adjust the Frequency Counter Trigger Level to obtain a
stable reading and check that the Frequency Counter reads
between:
2.047999999 MHz and 2.048000001 MHz
.
7
Confirm that the OmniBER OTN is locked to the External
signal by disconnecting/re-connecting the BNC cable at the
instrument CLOCK IN port
10MHz Reference to External 10M Clock Input
PDH/DSn Test Set/Synthesizer
2M Ref Out or
Clock Out
2 MHz Clock O/P
Matching pad
and/or termination
53181A Counter
Output
Counter 10 MHz
Reference OUTPUT
Signal
OmniBER OTN
panther3_iv.book Page 76 Wednesday, January 15, 2003 12:03 PM
Содержание OmniBER J7230A
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