To Check Power Requirements; To Set The Line Voltage Selection - Keysight 1143A User's And Service Manual

C A U T I O N
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W A R N I N G

To check power requirements

The power module requires a power source of either 90 to 132/198 to 264
Vac, 47 to 440 Hz, 40 VA maximum.
BEFORE CONNECTING POWER TO THIS INSTRUMENT, be sure the line
voltage switch on the rear panel of the instrument is set properly.
Applying a voltage excessive to the setting may open the protective fuse.
For size, type, and part number of the fuse, see the parts list in chapter 2,
"Service."

To set the line voltage selection

Before applying power, verify the setting of the LINE SELECT switch on the
rear panel.
If the switch is set incorrectly, set it to either 115 V or 230 V,
whichever is appropriate for the voltage in your area.
The fuse used is the same regardless of input voltage selection.
SHOCK HAZARD!
BEFORE YOU CONNECT THIS INSTRUMENT TO MAINS POWER OR LIVE
MEASURING CIRCUITS you must provide a protective earth ground.
The Mains plug must be inserted in a socket outlet provided with a
protective earth contact.
Do not use an extension cord (power cable) without a protective conductor
(grounding). Grounding one conductor of a two-conductor outlet does not
provide an instrument ground.
Failure to provide a protective earth ground could result in a shock hazard if
there is a failure in this instrument or equipment connected to it.
This instrument is provided with a three-wire power cable. When connected to
an appropriate ac power outlet, this cable grounds the instrument cabinet. The
type of power cable plug shipped with the instrument depends on the country of
destination.
Operating the Power Module

To check power requirements

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