36
f) Capacity Measuring
Attention!
Do not exceed the maximum admissible input values under any
circumstances! Discharge each condenser prior to connecting it
to the measuring device. Short-circuiting condensers may result
in dynamic discharges. Do not touch any circuits or circuit parts if
these carry voltages in excess of 25 V ACrms or 35 V DC! Do not
perform any measurements on condensers installed in
circuits/circuit parts.
For measuring the capacity of condensers, proceed as follows:
- Set the range selection switch (5) to position
.
- Measurements can only be performed on the con-
nection sockets (6) = + and (7) = -. With unipolar con-
densers (polarized), observe the right polarity ("+"
and "-").
- You can use the enclosed multi-purpose plug for
easier handling.
Notice!
Please note that the multimeter needs approx. 2 to 3 seconds in order to stabilize
the display.
g) Frequency Measuring
Attention!
Do not exceed the maximum admissible input values under any
circumstances! Do not touch any circuits or circuit parts if these
carry voltages in excess of 25 V ACrms or 35 V DC!
For measuring a frequency, proceed as follows:
- Connect the black measuring cable with the COM socket (7) and the red measur-
ing cable with the V
Ω
socket (6) until these are plane in the measuring device.
- Set the range selection switch (5) to position "Hz".
- Now connect the two measuring tips with the measuring object (generator, circuit,
etc.).
The current measuring value is displayed on the display (1).
41
You can deactivate the auto power-off function. To do so, keep the "REL
" button
depressed while switching the device on. After turning the device off, this function is
active again.
HOLD Function
The HOLD function freezes the currently displayed measuring value in order to be
able to read it off at leisure or log it. Unstable or fluctuating measuring values cannot
be "frozen".
When checking live conductors, make sure that this function is deacti-
vated when starting the test. Otherwise, a wrong measuring result is
indicated!
To turn on the hold function, press the "HOLD" button; a signal sound confirms this
action and "HOLD" is displayed on the display.
In order to deactivate "HOLD" again, press this button anew or operate the rotary
switch.
REL
Function
The REL function enables relative value measuring in order to prevent poss. line loss-
es e.g. with resistance measurements. To do so, the current display value is set to
zero. A new relative value was set.
This measuring function is activated by pressing the "REL
∆
" button. "
∆
" appears on
the display. The automatic measuring range selection is deactivated here.
In order to turn this function off, you must press the "REL
∆
" button for more than 1
second.
Low Impedance 200 k
Ω
ATTENTION!
You may only use this function for voltages of up to 250 V and for
max. 3 seconds.
This measuring function enables the reduction of the measuring impedance from 10
M
Ω
to 200 k
Ω
. Reducing the measuring impedance suppresses possible phantom
voltages that may falsify the measuring result.
Press this button during voltage measuring (max. 250 V!) for max. 3 seconds. After
letting go, the multimeter returns to the normal measuring impedance of 10 M
Ω
.
