Fluke 9500B - Using the 9500 B DCI Function to Calibrate the Amplitude Response of a UUT Oscilloscope Current Probe

4.10-6 Section 4: Using the Model 9500B — Current Function
Final Width = 215mm
Descriptions assume 9500B/1100
7. Calibration
a. If a calibration adjustment is provided,
adjust the UUT probe's amplitude response
to be appropriate to the settings on the
9500B screen, as detailed in the UUT Scope
Manufacturer's Calibration Guide.
b. If no adjustment is provided, record the
probe's amplitude response at the
calibration point as detailed in the UUT
Scope Manufacturer's Calibration Guide.
8. 9500B Set Output OFF.
4.10.9.4
UUT Current Probe — Amplitude
Calibration using the 9500B as a Fixed
Source
Sequence of Operations
Refer to the table or list of UUT Oscilloscope
amplitude calibration points in the UUT Scope
Manufacturer's Calibration Guide.
Follow the sequence of calibration stages as
directed by the guide, and carry out the
following operations (1) to (8) at each stage.
1. 9500B
Use the front panel controls to set the 9500B
Output to the required DC current and polarity
for the UUT Probe amplitude cal point:
2. UUT 'Scope
a. Select the correct channel for the cal point.
b. Select 'DC-Coupled', if required.
c. Select the correct range for the cal point.
3. 9500B
Ensure that Output is OFF.
4. UUT 'Scope
a. Set the Y controls to place the trace on
graticule zero.
5. 9500B
Set Output ON.
6. UUT 'Scope
a. Auto-trigger the oscilloscope or use the
100Hz Trigger from the 9500B. Adjust
the UUT for a stable display.
b. Observe and note the DC level change
from graticule zero.
4.10.9
Using the 9500B DCI Function to Calibrate the Amplitude Response of
a UUT Oscilloscope Current Probe
4.10.9.1 Introduction
Two types of procedures for amplitude
calibration are given:
a. Using the 9500B as a fixed source, where
the oscilloscope can be adjusted;
b. Using the 9500B as an adjustable source,
reading oscilloscope deviations via the
9500B screen.
4.10.9.2 Interconnections
a. Use the appropriate active head and current
probe accessory to connect from the
required 9500B signal output channel to
the current probe at the UUT input.
b. If a trigger is required, use the appropriate
active head (or trigger cable) to connect
from the required 9500B channel output to
the UUT Trigger input.
4.10.9.3 Common Setup
The following procedures assume that the
9500B instrument is in Manual Mode. It is also
assumed that the user will be familiar with the
methods of editing screen values. In the case
of difficulty, re-read the paragraphs earlier in
this Section 4.
9500B and UUT Oscilloscope Setup
1. Preparation
Ensure that both instruments are powered ON
and warmed up.
2. UUT Probe
Select the required function for pulse response
calibration.
3. 9500B
Ensure that the 9500B is in Current Function
with Output OFF. If in any other function,
press the 'Aux' key on the right of the
'
OSCILLOSCOPE CALIBRATOR ' panel, then
the
soft key on the top right of the
screen. Select
or as required.