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Servicing
Adjustment Procedures
17
Connect the equipment as shown in the following figure.
Figure 5-13. Equipment setup for laser bias
18
Turn the Agilent 83430A’s
LINE
switch on, and clear the Agilent 83480A’s
display.
19
On the Agilent 83430A, press the
PRESET/VARIABLE
button so that the
BIAS
ADJUST
light is off.
20
On the Agilent 83480A digital communications analyzer, perform the following
steps:
a
Turn the optical channel on. Turn off all other channels.
b
Enable the internal OC-48 filter.
c
Press the blue shift key and then press
MEAS EYE
.
d
Press
Extinction ratio
.