19
18
Auto / Manual Range Operation
P ress the RANGE button momentarily to select manual-ranging in volts, ohms,
and currents measurement function, and the meter will remain in the range it was
in, when t he LCD annunciator
A U T O
t urns off.
Press the button momentarily again to step through the ranges.
Press and hold the RANGE button for 2 seconds to resume auto- ranging.
Manual-ranging feature is not available in Hz (Duty), CAP , Temp, and
f u n c t i o n s .
Auto - Power - Off
The Auto-Power-Off feature automatically turns the meter off to extend battery life
after approximately 30 minutes of no activities. To turn on the met er after Auto-
Power-Off, turn the rotary switch from OFF to any function (ON).
Cleaning and Storage
Periodically wipe the case with a damp cloth and mild det ergent; do not use
abrasives or solvents.
Clean the input terminals as follows :
1. Turn the meter off and remove all test leads.
2. Shake out any dirt that be in the terminals.
3. Soak a new swab with alcohol and work the swab around in each terminal.
If the meter is not to be used for periods of longer than 60 days, remove the battery
and store it separately.
Battery and Fuse Replacement
The meter uses a single standard 9V battery (NEDA 1604, JIS006P, IEC 6F 22), a
1000 V/440 mA IR 10 kA fast acting F fuse (F
71
) for mAµA current input, and a 1000
V/11 A IR 10KA fast acting F fuse (F
72
) for A current input. The (F
71
) 440 mA, (F
72
) 11
A fuse must be replaced by qualified service personnel only.
Trouble Shooting
If the meter fails to operate even with the battery or fuse replacements, check it
twice over according to operating procedure as described in this manual.
If the meter’s V/ input terminal has subjected to high voltage transient (caused by
lightning or switching surge to the system) by accident or abnormal operating
conditions, the series fusible resistors will be blown off like fuses in order to protect
the user and the meter. Most measuring functions through this terminal will then be
open circuit.
In this case, the series fusible resistors and the spark gaps should be replaced by
qual ified personnel. Ref er to t he LIMI TED WA RRA NTY & LI MI TAT ION O F
LIABILITY section for obtaining warranty or repairing service.
6. MAINTENANCE
Warning
To avoid electrical shock or personal injury, remove the test
leads and any input signals before replacing the bat tery or
fuses. To prevent damage or injury, install only the same type
of fuses or equivalents.
