Hp 4280A Cmu Settings - HP 4062UX Installation Manual

HP 4280A CMU Settings

When the HP 4280A CMU is installed into the HP 4062 at the factory, the HP 4280A is set as
shown in Figure 4-6. Con rm these settings.
Figure 4-6. HP 4280A Settings on the Front and Rear Panels
(1) INT BIAS switch:
The INT BIAS limit switch must be set to
connector must be terminated with the furnished shorting cap.
To use the HP 4280A as a standalone instrument, remove the shorting cap from
Warning
the REMOTE ON/OFF connector. Refer to section 3 of the HP 4280A
Manual
(2) CIRCUIT COMMON (
These two terminals must be connected using the furnished shorting bar.
The ground-reference potential on the exposed outer shields of the UNKNOWN
Warning
TERMINALS and on the CIRCUIT COMMON (
dangerously high when the CHASSIS GROUND (
terminals on the HP 4280A are not connected.
(3) SLOW terminal of EXT BIAS:
The SLOW terminal of EXT BIAS on the HP 4280A rear panel must be terminated with
the furnished BNC shorting cap.
.
5
) { CHASSIS GROUND(
6
100 V MAX and the REMOTE ON/OFF
?
) Terminals:
5
) terminal can become
?
) and CIRCUIT COMMON (
Operation
System Installation 4-15
5
)