Input A, B, C, D Frequency Measurement Accuracy Test - Fluke ScopeMeter 190 II Series Service Manual

Fluke 190-062, -102, -104, -202, -204, -502, -504
Service Manual

Input A, B, C, D Frequency Measurement Accuracy Test

The test steps for channel C and D are only for the models
190-104, 190-204, and 190-504.
Proceed as follows to test the frequency measurement accuracy:
1. Connect the Test Tool to the 5502A as shown in Figure 4-5. Do not use 50 Ω
terminations.
PM9093
A METER
2 CHANN. + METER
2. Select the following Test Tool setup:
a) Recall the created setup (see Standard Test Tool Setup). Press
b) Press
c) Press
3. Use
4. Use
5. Set the 5502A to source a sine wave according to the first test point in
Table 4-7.
Because no 50 Ω termination is applied, the 5502A leveled sine wave output
amplitude is twice the set value.
6. Observe reading
under the appropriate column.
4-18
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PM9092 PM9092
B B
A C D
4 CHANNELS
Figure 4-5. 5502A Scope Output to Test Tool Input A, B, C, D
F2
( select
RECALL) and
and press to recall the setup.
ENTER
SCOPE .
F2
(–
READING
and with :
Reading 1, on A, Hz
Reading 2, on B, Hz
Reading 3, on C, Hz
Reading 4, on D, Hz
mV
RANGE
and to select range 100 mV/div for A, B, C and D.
RANGE V
s TIME ns
to select the required time base setting.
and
A, B, C,
Note
PM9091
CONNECT TO CHANNEL A, B, C, D IN PARALLEL
NO 50 OHM TERMINATION
NORMAL SCOPE
FLUKE 5502A CALIBRATOR
, press ENTER , select the setup name,
SETUP
F1
...) and select with
and check that it is within the range shown
D
perf-ver-c2.eps
SAVE
,
(–
READINGS)