Fluke 9500B - Using the 9500 B Linear Ramp Function for Error Code Detection and Trigger Level Marker Checks

4.12-2 Section 4: Using the Model 9500B — Linear Ramp Function
Final Width = 215mm
Descriptions assume 9500B/1100
4.12.5.1 Introduction
The type of procedure, for generating Linear
Ramps for error code detection and trigger
level marker calibrations, uses the 9500B as a
fixed source.
4.12.7.2 Interconnections
a. Use an active head to connect from the
required 9500B signal output channel to
the UUT signal input channel.
b. If a trigger is required, use an active head
(or trigger cable) to connect from the
required 9500B channel output to the UUT
Trigger input.
4.12.5.3 9500B and UUT
Oscilloscope 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.
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 Linear Ramp
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 right of the
screen.
4.12.5.4 Error Code Detection —
Sequence of Operations
Refer to the table or list of UUT Oscilloscope
test points in the UUT Oscilloscope
Manufacturer's Test Guide.
Follow the sequence of test stages as directed
by the guide, and carry out the following
operations (1) to (6) at each stage.
1. 9500B
Select the required channel and use the front
panel controls to set the 9500B Output to the
required trigger point, ramp time and expected
load for the UUT 'Scope test point:
2. UUT 'Scope
a. Select the correct channel for the test point.
b. Select the correct range for the test point.
3. 9500B Set Output ON.
4. UUT 'Scope
a. Adjust the sweep speed and trigger level
for a stable display.
5. Error Code Check
b. Observe and record the UUT response to
the codes at the test point, as detailed in the
UUT Oscilloscope Manufacturer's Test/
Calibration Guide.
6. 9500B Set Output OFF.
4.12.5 Using the 9500B Linear Ramp Function for Error Code
Detection and Trigger Level Marker Checks
4.12.5.5 Trigger Level —
Sequence of Operations
Refer to the table or list of UUT Oscilloscope
test/calibration points in the UUT Oscilloscope
Manufacturer's Test Guide.
Follow the sequence of test stages as directed
by the guide, and carry out the following
operations (1) to (6) at each stage.
1. 9500B
Select the required channel and use the front
panel controls to set the 9500B Output to the
required trigger point, ramp time and expected
load for the UUT 'Scope test point:
2. UUT 'Scope
a. Select the correct channel for the test point.
b. Select the correct range for the test point.
3. 9500B Set Output ON.
4. UUT 'Scope
a. Adjust the sweep speed and trigger level
for a stable display.
5. Trigger Level Marker Check
a. If a trigger level calibration is provided,
adjust the UUT's trigger response to the
ramp to be appropriate to the settings on
the 9500B screen, as detailed in the UUT
Oscilloscope Manufacturer's Test Guide.
b. If no adjustment is provided on the UUT
'Scope, record its trigger response at the
test point as detailed in the UUT
Oscilloscope Manufacturer's Test Guide.
6. 9500B Set Output OFF.