Keysight Truevolt Series Operating And Service Manual page 14

Safety and Regulatory Information
Do Not Remove Instrument Cover
Only qualified, service-trained personnel should remove the cover from the instrument. Service:
Unplug instrument from wall outlet, remove power cord, and remove all probes from all terminals
before servicing.
AC Mains Power Line Fuse
For continued protection against fire, replace the line fuse only with fuses of the specified type and rat-
ing. The instrument must be disconnected from AC mains power, and all measurement terminals
must be disconnected before changing the fuse.
Current Measurement Protection Fuse
For continued protection against fire, replace current-protection fuses only with fuses of the specified
type and rating. The instrument must be disconnected from AC mains power, and all measurement ter-
minals must be disconnected before changing the fuse.
Front/Rear Switch
Do not change the position of the Front/Rear switch on the front panel while signals are present on
either the front or rear set of terminals. The switch is not intended as an active multiplexer. Switching
while current or high voltage is present may cause instrument damage and lead to the risk of electric
shock.
Do Not Operate in an Explosive Atmosphere
This instrument is not designed to be operated in an explosive environment. The instrument enclosure
complies with the IP 20 rating.
In Case of Damage
An instrument that appears damaged or defective should be made inoperative and secured against
unintended operation until qualified service personnel can repair it.
Self-Test
Before measuring any hazardous voltage or current, remove all test leads to the instrument, run the
TEST:ALL? query from the remote interface, and read the result to verify that the instrument is per-
forming properly.
The TEST:ALL? query is a self-test that returns +0 if the instrument passes and +1 if the instrument
fails. You can also perform this query from the front panel by pressing [Shift] > [Utility] > Test/Admin >
Self Test > Full Test. If this self-test fails, make sure that the instrument is repaired and passes the
complete self-test before continuing.
Measuring AC Power Mains
The HI, LO, and current input terminals may be connected to AC mains power in IEC Category II install-
ations for line voltages up to 300 VAC. To avoid the danger of electric shock, do not connect the inputs
to AC mains power for line voltages above 300 VAC. See for further
IEC Measurement Category II
information.
Keysight True volt Series Operating and Service Guide 15