Revised August, 2004
10 TEGAM WAY • GENEVA, OHIO 44041 • 440-466-6100 • FAX 440-466-6110
•
2-2
PREPARATION FOR USE AND INSTALLATION
Power Up
Plug the power cord into a source of AC power (103.5 V to
129 V at 50 Hz or 60 Hz). Check that the other end is
plugged securely into the power input receptacle on the front
panel and turn on the POWER toggle switch.
Connections to DUT
One test cable has a double banana plug at one end and red
and black insulated alligator clips at the other end. This is
the shielded test cable. Connect the red alligator clip to one
end of the resistor under test. Connect the black clip to the
guard circuit, if any. If no guard is available, this clip may be
left floating (it is connected to the cable shield and to the
R1M-A guard circuit at the other end) however, this clip must
not be allowed to make accidental contact with any part of
the external circuit. Plug the dual-banana plug on this cable
into the SIG and GUARD binding posts. Note that the pin
marked GROUND should go into the GUARD binding post. If
there is no guard available and the black alligator clip at the
other end of the test cable is left floating, the operator may
choose to orient the dual banana plug so that the GROUND
pin is NOT plugged into the GUARD binding post. This will
ensure that any accidental contact of the black alligator clip
will cause no problem; however, the cable shield will then be
floating and the signal may be excessively noisy.
The other test cable has a shrouded banana plug on one end
and an insulated alligator clip on the other end. This cable
carries the high voltage output of the R1M-A to the resistor
under test. Connect the alligator clip to the other end of the
resistor under test; then plug the shrouded banana plug into
the recessed (RED) ‘TEST’ jack. Please refer to the
connection diagram (figure 1) below.
The shorting link on the GROUND binding post may be
swung around and connected to the GUARD binding post to
ground the R1M-A circuitry. This may be done only if there is
no external voltage with respect to ground on the measured
resistor or guard.
