25
®
Relative-Zero ( ) mode :
Relative-Zero allows the user to offset the meter consecutive measur-
ements with the main display displaying reading as the reference
value. LCD “ ” turns on. Press the
REL
button momentarily to
toggle Relative-Zero mode.
Beep-Jack™ Input Warning :
The meter beeps as well as displays
“
InEr
” to warn the user against possible damage to the meter due
to improper connections to the “
INS. µA
mA
” or “
A
” input jack
when other functions, especially voltage function, is selected.
Set Beeper Off :
Press the
RANGE
button while turning the
meter on to temporarily disable the Beeper feature. Turn the rotary
switch OFF and then back on to resume.
Auto-Power-off (APO) :
The Auto-Power-off (APO) mode turns the
meter off automatically to extend battery life after approximately 20
minutes of no rotary switch or push button operations. To wake up
the meter from APO, press the
SELECT
or
button momentarily
or turn the rotary switch OFF and then back on. Always turn the
rotary switch to the OFF position when the meter is not in use.
Disabling Auto-Power-off :
Press the
SELECT
button while turning the meter on to temporarily
disable the Auto-Power-Off feature. Turn the rotary switch OFF and
then back on to resume.
MAINTENANCE :
WARNING :
To avoid electrical shock, disconnect the meter from any circuit,
remove the test leads from the input jacks and turn OFF the meter
before opening the case. Do not operate with open case. Install
only the same type of fuse or equivalent
Calibration :
Accuracy is specified for a period of one year after calibration
Periodic calibration at intervals of one year is recommended to mai-
ntain meter accuracy.
®
26
Cleaning and Storage :
Periodically wipe the meter and the test probe assembly with a damp
cloth and mild detergent. Do not use abrasives or solvents. Allow to
dry completely before operating. If the meter is not to be used for
periods of longer than 60 days, remove the battery and store it
separately.
Trouble Shooting :
If the instrument fails to operate, check battery, fuses, leads, etc.,
and replace as necessary. Double check operating procedure as
described in this manual.
Battery and Fuse replacement :
Loosen the screws from the access cover of the case bottom. Lift the
access cover. Replace the batteries or fuse. Re-fasten the screws.
Battery and Fuse replacement :
Battery use :
Four 1.5V AA battery (IEC LR6)
Fuses use :
Fuse (F2) for
INS. µA mA
input :
0.4A/1000Vac & Vdc, IR 30kA or better, F fuse;
Dimension :
6 x 32 mm
Fuse (F3) for
A
input :
11A/1000Vac & Vdc, IR 20kA or better, F fuse;
Dimension :
10 x 38 mm
AA
+
AA
+
AA
+
F2
F3
