190M Series III
Users Manual
70
Voltage Probe Calibration
To fully meet user specifications, you need to adjust the voltage probes for optimal response. The
calibration consists of a high frequency adjustment and a dc calibration for 10:1 probes and
100:1 probes. The probe calibration matches the probe to the input channel.
To calibrate the 10:1 voltage probes:
1. Press
A
to show the input A key labels.
2. Press
3
to open the PROBE ON A menu.
If the correct probe type is already selected (yellow shaded) you can continue at step 5.
3. Use the cursor and
E
to select
Probe Type: Voltage
and
Attenuation: 10:1
.
4. Press
3
to open the PROBE ON A menu again.
5. Press
1
to select
PROBE CAL..
.
Note
It is necessary to connect both the hook clip and the zero reference contact.
A message appears asking you whether to start the 10:1 probe calibration.
6. Press
4
to start the probe calibration.
A message appears telling you how to connect the probe. Connect the red 10:1 voltage probe
to input A and to the probe calibration reference signal. See
.
Figure 45. Voltage Probe Adjustment
Probe Cal
Probe Cal Reference
