HP 83491A User Manual page 11

Clock recovery modules
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C A U T I O N
C A U T I O N
7 On the HP 83480A, press the Trigger key and then the Source softkey. Then,
8 On the HP 83491/2/3A module, repeatedly press the SELECT key until a front-
Figure 1-3. The adapter cable
HP 83491A Modules: Maximum safe signal input level is ±5V. The input circuits
HP 83491A Modules:
HP 83491A Modules:
HP 83491A Modules:
can also be damaged by electrostatic discharge (ESD). Before connecting any
coaxial cable to the connectors, momentarily short the center and outer
conductors of the cable together. Avoid touching the front-panel input
connectors without first touching the frame of the instrument. Be sure that the
instrument is properly earth-grounded to prevent buildup of static charge.
HP 83492/3A Modules: Maximum safe signal input level is +3 dBm.
select trigger 2 (the HP 83491/2/3A module) for the trigger source.
panel light indicates the data rate of the signal. See
Green and red data-rate lights
The data-rate indicator lights change color between red and green to show which data
rate is selected. A red light does not indicate a problem. A red light shows that the adja-
cent red data rate label is selected. A green light shows that the adjacent green data
rate label is selected. Repeatedly pressing the SELECT key cycles through the selections
in one color before switching to the opposite color. On HP 83491A modules for example,
the first selection cycle shows 155 Mb/s selected. The second section cycle shows 1062
Mb/s selected.
Installation
Installation
Figure 1-4 on page
1-6.
1-5

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