Putting into Operation
R&S
®
RT-ZC20B
15
User Manual 1409.8285.02 ─ 04
3.3
Setting Up and Demagnetizing
Before starting measurements, demagnetizing the core and a zero adjustment of
the probe are required.
Risk of circuit damage
Do not demagnetize while the R&S
RT-ZC20B is clamping a conductor to
be measured. Demagnetizing causes current to flow into the conductor,
which may damage parts in the circuit to be measured.
All settings of the base unit described in this section refer to the R&S
RTO/RTE/RTP oscilloscopes.
On the R&S RTM, the probe settings can be found in the "Channel" menu:
CH N > "More > Probe".
To demagnetize and zero-adjust the probe:
1. Connect the R&S
RT-ZC20B current probe as described in
2. Make sure that there is no conductor in the sensor aperture.
3. Press the opening lever until the UNLOCK indication disappears. Close the
sensor head properly.
4. On the "Vertical" menu of the R&S RTO/RTE/RTP, select "Probe Setup".
5. Select the channel the probe is connected to.
6. Tap "DeGauss".
This demagnetizes the core if it has been magnetized by switching the power
on and off, or by an excessive input. Always carry out demagnetizing before
measurement.
The demagnetizing process takes about one second. During demagnetizing, a
demagnetizing waveform is present at the output.
7. Change the "Zero adjust" value to adjust the waveform to zero position.
After demagnetizing always carry out a zero adjustment.
Tip:
On R&S
RTO/RTE/RTP instruments, you can tap "Detect AutoZero" to
demagnetize and adjust to zero position in one step.
Setting Up and Demagnetizing
www.allice.de
Allice Messtechnik GmbH
