18
GOSSEN METRAWATT GMBH
11
Capacitance Measurement
➭
Make sure that the device
under test is voltage-free.
Interference voltages distort
measurement results!
➭
Turn the rotary switch to the
“F” position.
➭
Connect the (discharged!)
device under test to the
⊥
and V jacks with the
measurement cables.
Zero Balancing in the 30 nF Measuring Range
Intrinsic capacitance at the measuring instrument and cables can be eliminated
for the measurement of small capacitance values in the 30 nF range by means of
zero balancing:
➭
Connect the measurement cables to the measuring instrument without a
device under test.
➭
Briefly press the
FUNC
key.
The instrument acknowledges zero balancing with an acoustic signal and
“
00
.
00
” and the ZERO symbol appear at the LCD. Capacitance measured
at the moment the key is pressed is used as a reference value (max.
200 digits). This value is automatically subtracted from all subsequently
measured values.
➭
Zero balancing can be cleared:
–
by pressing and holding the
FUNC
key, after which clearing is acknowledged
by a twice repeated acoustic signal,
–
by switching the instrument off.
12
Frequency Measurement
➭
Turn the rotary switch to the Hz position.
➭
Apply the measured quantity as described under voltage measurement.
➭
Smallest measurable frequencies and maximum allowable voltages are
listed in chapter 14, “Characteristic Values”.
+
–
