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Safety Precautions
CAUTION
The 1855 Capacitor Leakage Current/IR Meter can provide an output voltage of 650V DC to the
device under test (DUT). Although the 1855 unit is a low voltage instrument, some devices
(especially capacitors) can store charge when tested. If not discharged properly, these devices
may cause serious hazards. Follow these safety instructions.
1. Operate the 1855 unit with its chassis connected to earth ground. The instrument is
shipped with a three-prong power cord to provide this connection to ground. This power
cord should only be plugged in to a receptacle that provides earth ground. Serious injury
can result if the 1855 unit is not connected to earth ground.
2. Tightly connect BNC cable to the silver INPUT terminal. If this is not done, the DUT’s
casing can be charged to the high voltage test level and injury or electrical shock hazards
could result if the DUT is touched.
3. Never touch the test leads, test fixture or DUT in any manner (this includes insulation on
all wires and clips) when [TRIGGER] has been pressed and the output is applied.
4. Before turning on the 1855 instrument, make sure there is no device (DUT) or fixture
connected to the test leads.
5. Make sure any capacitive device has been discharged fully before touching the test lead
wires or output terminals.
6. In the case of an emergency, turn OFF the POWER switch using a “hot stick” and
disconnect the AC power cord from the wall. Do not touch the 1855 instrument.
7. Be wary when the 1855 instrument is used in remote control mode. The voltage/current
output is being turned on and off with an external signal.]
8. Do not exceed the 1A Maximum Input Current.
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