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Verification.book Page 20 Monday, January 19, 2004 1:40 PM
1
Performance Tests
OmniBER OTN
20
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2 MHz Clock OUT
(75 Ω UnBal)
4 Adjust the frequency counter trigger level to obtain a stable
reading and check that the frequency counter reads between:
The reading should be well within these limits. However, after several
NO TE
years of operation the main reference oscillator may need adjustment
optimized to compensate for drift/ageing. If necessary contact your local
Agilent Service for advice. Before doing so ensure the Counter being used
has the appropriate internal/external reference accuracy.
5 Press <Menu>, choose Tx/Rx > Transmitter Settings >
Physical then press <Select>. Set the Signal Mode to
SONET.
6 Connect the DS1 Transmit OUT to Receive IN ports of the
test set using a Bantam to Bantam cable. Also connect an
external 10 MHz Reference signal to the test set 10M CLOCK
input port.
53181A Counter
Matching pad
and/or termination
2.0479908 MHz and 2.0480092 MHz.
External High Stability
10 MHz Reference may
be required
Verification Manual
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