Conrad VC 350E Bedienungsanleitung Seite 13

Note
The "MAX" measurement procedure is similar to the "MIN" mea-
surement. Proceed as described in "Note" under "MIN" measure-
ment.
Now connect the test probes to the circuit (points) to be measu-
red. The present measured value appears both in the large and
small displays. Now remove the test probes from the test points. In
the large display the most recently measured value remains "fro-
zen" (held). In the small display, "OL" appears under resistance
measurement, continuity check and diode test. "0000" appears in
the small display for the other measurement functions. The mea-
surement value now remains frozen/held in the large display until
during a further measurement a higher value is established. The
large display always displays the highest-occurring measured
value.
H) "Device on" special functions
When the instrument is switched on, various special functions can
be activated. For example the "measurement frequency" for alter-
nating current - or AC voltage measurements can be changed
from 50 Hz to 60 Hz and vice versa. It is also possible to connect a
serial printer and to activate the printer port by means of the
"Device on" function. With the last of the three "Device on" spe-
cial functions, the "Auto Power Off" function (automatic switch-
off after approx. 13 minutes) can be turned off. When one of
these special functions is to be activated, proceed as follows:
H1) To be able to change the measurement frequency, the yellow
button must be pressed and held when switching on the mea-
suring instrument (by means of the rotary switch) and relea-
sed after approx. 2 to 3 seconds. As a result "50 Hz" or "60
Hz" appears in the display according to the previous setting.
24
The setting / changing of the respective alternate value is
done with the " REL" or " R-H" button. Having successfully
made the setting, press the yellow button again.
H2) To activate (switch on) the printer port, before switching on
the measuring instrument (by means of the rotary switch) the
"REC" button and the yellow button must be pressed. After
approx. 2 to 3 seconds release the yellow button, but conti-
nue to press the "REC" button. Now switch on the measuring
instrument and the computer. The printer port is activated.
Every 10 seconds, the measurement data with measured
value, measurement range and measurement unit will now
be printed out via the connected serial printer. To switch the
printer port off again, position the rotary switch to "OFF".
H3) To switch off the Auto Power Off function, before switching
the measuring instrument on (by means of the rotary switch),
press the blue button. After approx. 2 to 3 seconds, you switch
on the measuring device with the rotary switch and release
the blue push-button. The measuring instrument will now
not switch off after approx. 13 Min., but rather remain operat-
ing until either the battery is empty (used up) or the rotary
switch is set to "OFF" (instrument off). If the measuring
instrument is switched off by means of the rotary switch and
afterwards switched on again, the Auto Power Off function is
reactivated, i.e. the instrument switches off automatically after
13 minutes.
5.4.4 Display information or symbols about the operating modes
+ -
a) Battery change indicator
An alkaline 9V battery in this measuring instrument lasts on
average approx. 400 hours. Approx. 8 hours before the battery
"expires", the battery change symbol appears in the display.
25