Operation; Startup; Instrument Zeroing/Offset - QuadTech Guardian 5000 Instruction Manual

Section 2
2.1

Startup

Check to make sure the Voltage Selector Switch on the rear panel agrees with the power
source available (Depending on the power source the switch positions should be in the up or
down positions as shown).
NEVER TOUCH THE TEST LEADS IN ANY MANNER (this includes insulation on all
wires and clips) WHEN THE HIGH VOLTAGE IS APPLIED AND RED DANGER
USE ALL PRECAUTIONS NECESSARY TO AVOID TOUCHING THE DEVICE
UNDER TEST WHEN THE RED DANGER LIGHT IS ON OR BLINKING.
Connect the instrument power cord to the source of proper voltage. The instrument is to be
used only with three wire grounded outlets.
Power is applied to the Guardian 5000 by pressing the front panel POWER switch to ON (1
position).
DO NOT TURN INSTRUMENT POWER ON OR OFF WITH TEST DEVICES CONNECTED.
2.2

Instrument Zeroing/Offset

The Guardian 5000 provides automatic zeroing/offset for lead or fixture effects. During the
zeroing/offset process a correction is made (subtracted out) as the result of lead leakage
current and stored in instrument memory to be applied to ongoing measurements. For
maximum measurement accuracy it is recommended that the unit be zeroed after power-up
and any time the test leads or fixture is changed (the offset is not saved under setup storage, 1
- 50 setups, but is saved on a power down and power back up. The instrument should
warm-up for at least 15 minutes before zeroing.
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WARNING
LIGHT ON.
WARNING

Operation

Operation 2-1