Note!
The integrated 10A fuse can be checked in an easy way: Set the measuring
instrument to the acoustic continuity check (see „Measuring resistance values“
for connecting the measuring lines) and connect the measuring prod to the 20A
input. If an audio signal is generated, the fuse is OK. If „0L.“ is indicated, the
fuse is defect and has to be replaced. When doing this, observe the safety
instructions.
If you want to check a fuse of the μA/ mA-input, it will be necessary to open the
instrument.
Connecting a computer
The optoelectronic unidirectional (into one direction) interface to a PC in form of an
IR diode is positioned at the top of the rear side of the measuring instrument. The
serial interface is always active, indicated by the „RS232C“ symbol in the header of
the display.
The following steps are to be performed to allow the communication between an
(IBM-compatible) PC and your measuring instrument:
- Switch off the measuring instrument.
- The interface is integrated at the rear side. Turn over the measuring instrument.
- Take the interface line and slide the coupler into the wedge-shaped recess
up to the stop.
- The connection has been established.
- The transmission is performed in an unidirectional manner (into one direction).
- Load the DEMO software (from Windows ‘95) by using the explorer (Setup
or Install) of your PC (from Pentium I) and follow the instructions displayed,
or do it via Autostart (CD inserted, at start of Windows).
Notes!
The main memory must have at least 8MB. The DEMO software additionally
requires a memory space of approximately 8MB on the hard disc. Moreover, a
free serial interface is necessary. The transmission rate is 2400 bauds.
Maintenance, Replacing the Battery,
Replacing the Fuses, Setting up the Mea-
suring Instrument
a General
To ensure the accuracy of the multimeters over a longer period of time, they should
be calibrated once a year, possibly in our calibration laboratory.
To clean the devices or the display window and measurement lines, use a clean, lint-
free anti-static and dry cleaning cloth.
Caution!
Do not use detergent that contains carbon, petrol, alcohol or similar sub-
stances for cleaning purposes. Otherwise, the surface of the measuring instru-
ments will be corroded.
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