User manual

GMC-I Messtechnik GmbH 31
Measurements: V/Hz, , , Temp (°C/°F), , M
@UISO
, A/Hz
RPM Measurement (function only available with customer-specific variant)
Revolutions per minute (also known as rotational frequency) are
measured by acquiring pulses. As a prerequisite for this measure-
ment, the number of measurable pulses per revolution must first
be set in the RPM setup menu (vpm 0FF, see below).
➭ Set the rotary switch to V~.
➭ Repeatedly press the FUNC | ENTER multifunction key until RPM
is briefly displayed. The measured value then appears in RPM,
for example “244.3 r”.
Measured value RPM = revolutions per minute.
Parameter vpm = pulses per revolution.
Pulses per Revolution Setup Menu
1nFo
 ...  SET rAtE  ...  vpm
0ff/1 : 0.1 ... 1000  
5.2 Resistance Measurement, 
➭ Disconnect supply power from the electrical circuit of the
device to be measured, and discharge all high-voltage
capacitors.
➭ Make sure that the device under test is voltage-free.
Interference voltages distort measurement results!
Refer to section 5.1.1 regarding testing for the absence of
voltage with the help of the direct voltage measurement.
➭ Set the rotary switch to “”.
➭ Connect the device under test as shown.
Note
Use short or shielded measurement cables in the case of
high-impedance resistance.
Improving Accuracy by means of Zero Balancing
Cable resistance and contact resistance can be eliminated in all
measuring ranges by means of zero balancing (see section 4.2).
RPM
Revolutions
min
----------------------------
Pulses
Revolution
-------------------------§


x
60s
s
--------
=
MEASURE
SETUP
FUNC
ENTER
FUNC
ENTER
FUNC
ENTER