25
®
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
CREST
button momen-
tarily 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.
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.
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 “
A/mA
” or “
A
”) input jack
whenother functions, especially voltage function, is selected.
Press CREST button momentarily to activate CREST (Instantaneous
Peak-Hold) mode to capture voltage or current signal duration as
short as 5ms. The LCD “
C
” & “
MAX
” turn on. Press the button
momentarily to read the MAX and MIN readings in sequence. Press
the button for 1 second or more to exit CREST mode. Auto-Power-
Off is disabled automatically in this mode.
5ms CREST capture mode
®
26
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
Fuses use :
Fuse (F2) for
A/mA
input :
0.4A/1000Vac & Vdc,
IR 30kA F Fuse or better
Dimension :
6 x 32 mm
Fuse (F3) for A input :
11A/1000Vac & Vdc,
IR 20kA F Fuse or better
Dimension :
10 x 38 mm
AA
+
AA
+
AA
+
F2
F3
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.
Cleaning and Storage :
Periodically wipe the case with a damp cloth and mild detergent; do
not use abrasives or solvents. 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.
