Tietzsch MultiSafe DSP-UB 1 Bedienungsanleitung Seite 17

3.2 Establish contact with the earth
Place the contact magnet on
the bare rail.
The contact surface must
be clean and free from
coarse rust.
3.3 Checking the function with the integrated
self-test
Step 1 – Test of the display
The device must be switched
off for the self-test.
Press and hold button
All display segments
light up on the display,
the backlight changes
between red and white. In addition, 4 LEDs light up
and the buzzer sounds.
Release button , „TEST" is indicated on the
display.
Step 2 – Check test circuit and protective resistors
Hold the test electrode to
the grounded rail.
Through this, the
measurement and the
connecting line are tested.
"RdY" appears on the
display and the green
LEDs flash. In this case,
the self-test was successful.
If no „rdY" appears, the earth connection must be
checked and, if necessary, cleaned, and the test
probe and electrode checked. The self-test must be
repeated.
Attention!
If one of the displays fails during the self-test – even
if only partial failure occurs – or if the instrument
does not indicate „rdy" after the self test, the voltage
tester may not be placed into operation!
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