24
Triplett Model 9310-A
For DC voltage measurements, the Negative Sign (
-
) annunciator indicates that
the
V
Ω
Hz
jack is negative with respect to the
COM
jack.
To hold the reading, press the D-HOLD button so that the
annunciator is vis-
ible on the display.
Disconnect the test leads from the circuit under test and return the FUNCTION
Switch to the OFF position.
9.2 Measuring AC or DC Current
Refer to Section 7.0, Preparation For Use, and Section 8.0, General Measurement
Procedures, before attempting any measurements.
WARNING!!!
Remove test leads from meter before using it to measure Current.
Select the AC or DC Current measurement mode by rotating the FUNCTION Switch
to the
A
~
position or
A
. Make certain that the D-Hold annunciator
on the
display is not visible. If it is visible, press the D-HOLD button to turn it off.
If measuring DC Current, after setting the FUNCTION to
A
, press the
REL
and DCA ZERO ADJ
button to zero out any offset error. The displayed reading
should change to 000.X (where X can be any number), and the
REL
annuncia-
tor should appear in the display. Do this before clamping the Jaws around the
conductor.
Note:
Due to the high sensitivity of the meter in the
A
mode, the last digit may
change by several digits during use. It may be helpful to REL the meter after every
several minutes of use, if the most accurate low current DC measurements are
desired. Nearby magnets can affect the accuracy of the meter in this mode.
Clamp the Jaws around the one conductor to be measured. Center the conductor
within the Jaw using the Centering Marks as guides. See Figure 6.
Read the current on the display.
If the meter is set to
Auto
, it may display overrange
OL
momentarily while it is
selecting the proper measurement range. If the meter display indicates overrange
OL
for longer than 2 seconds, remove the Jaws from the circuit immediately. An
overrange condition exists. Do not attempt to measure this current. It exceeds the
capability of the meter.
Test Equipment Depot - 800.517.8431
99 Washington Street Melrose, MA 02176
TestEquipmentDepot.com
Summary of Contents for 9310-A
Page 35: ...35 Triplett Model 9310 A NOTES...
