Fluke 9500B - Using the 9500 B Edge Function to Calibrate the Pulse Response of a UUT Oscilloscope

4.7-4 Section 4: Using the Model 9500B — Edge Function
Final Width = 215mm
Descriptions assume 9500B/1100
4.7.6.1 Introduction
Two types of procedures for pulse response
calibration use the 9500B as a fixed source,
where the oscilloscope can or cannot be
adjusted.
4.7.6.2 Interconnections
a. Use the appropriate active head to connect
from the required 9500B channel output to
the input of the UUT Signal Channel to be
calibrated.
b. If a trigger is required, use the appropriate
active head (or trigger cable) to connect
from the required 9500B channel output to
the input of the UUT Trigger for the
Channel to be calibrated.
4.7.6.3 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 'Scope
Select the required function for pulse response
calibration.
3. 9500B
Ensure that the 9500B is in Edge Function with
Output OFF. If in any other function, press the
key at the right of the front panel.
4.7.6 Using the 9500B Edge Function to Calibrate the Pulse Response of a UUT Oscilloscope
4.7.6.4 UUT Scope — Pulse
Response Calibration using
the 9500B as a Fixed
Source
Sequence of Operations
Refer to the table or list of UUT Oscilloscope
flatness calibration points in the UUT
Oscilloscope Manufacturer's Calibration
Guide.
Follow the sequence of calibration stages as
directed by the guide, and carry out the
following operations (1) to (6) at each stage.
1. 9500B
Use the front panel controls to set the 9500B
Output to the required edge p-p voltage,
frequency and load impedance for the UUT
'Scope pulse response cal point:
2. UUT 'Scope
a. Select the correct channel for the cal point.
b. Select the correct range for the cal point.
3. 9500B Set Output ON.
4. UUT 'Scope
a. Adjust the sweep speed and trigger level
for a stable display.
b. Observe and note the pulse shape response.
5. Calibration
a. If a calibration adjustment is provided,
adjust the UUT's pulse shape. Note rise
time and aberration, as detailed in the UUT
Oscilloscope Manufacturer's Calibration
Guide.
b. If no adjustment is provided on the UUT
'Scope, note rise time and aberration, as
detailed in the UUT Oscilloscope
Manufacturer's Calibration Guide.
6. 9500B Set Output OFF.