HP 37717C Calibration Manual page 316

C AU T I O N
Performance Tests
SONET Frequency Offsets (Option 120)
3. Press
TRANSMIT
display as shown opposite.
4. Make the following key sequence on
the HP 37717C to obtain the special
display.
MODULE DEBUG
Press ; ;
OTHER
MORE
; ;
MORE MORE
Press until
MORE MODULE DEBUG
appears in the softkey menu.
Press
MODULE DEBUG
display as shown opposite.
When using the
MODULE DEBUG
PATTERN. Altering other parameters can damage instrument firmware - exit this
display after setup to eliminate any possibility of accidental modification.
5. Adjust the Frequency Counter Trigger Level to obtain a stable reading.
6. Take note of the measured frequency (MF).
7. Select the frequency offset settings given in Table 3-9 and verify the frequency at
each step against the measured frequency (MF) noted in step 6.
and set up the
; ;
; OTHER .
and set up the
display, ONLY modify the STM-1 TEST
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