User Manual

46 GMC-I Messtechnik GmbH
Measurements: V/Hz/dB – PQ/ – MHz/% – Ω/nS/R
SL
– / – Temp – /m – W/Wh – A/Hz/thd
5.6.1 Cable Length Measurement in m
In the cable length measuring mode, the instrument calculates
length as a function of the capacitance value entered by the user:
Preparation and execution of this measurement is the same as for
capacitance measurement.
Ð Press the multifunction key (FUNC | ENTER) until
“k” and “m” (for kilometers) appear at the display.
Note
Use of the power pack may result in significant deviations
during capacitance and cable length measurements!
CAP – Scaling Factor for Cable Length Measurement
(capacitive linear electric constant)
With regard to adjusting the “CAP” scaling factor (capacitive linear
electric constant), see also section 6.4.
1nFo
 ...  SET system  ...  CAP
CAP set: 010 nF/km . . . 100 nF/km . . . 500 nF/km

(100 nF = default setting)
Note
When measuring cable length, make sure that the cable
parameters (e.g. cross-section) are identical. Varying cable
parameters, for example interconnected cables of varying
type or cross-section, distort measurement results.
Length (km) =
measured capacitance (nF)
capacitance value (nF / km)
MEASURE
SETUP
FUNC
ENTER
FUNC
ENTER
FUNC
ENTER