Time Base Test - Fluke ScopeMeter 190-202 Service Manual

Fluke 190-062, -102, -104, -202, -204, -502, -504
Service Manual
5. Set the 5502A to source a sine wave according to the first test point in
Table 4-8.
Because no 50 Ω termination is applied, the 5502A leveled sine wave output
amplitude will be twice the set value.
6. Observe the readings
range shown under the appropriate column.
7. Continue through the test points.
8. When you are finished, set the 5502A to 0 (zero) Volt and Standby.
Time base
20 ms/div wavegen, sine, 1 MΩ
200 ns/div levsine
20 ns/div levsine

Time Base Test

Proceed as follows to test the time base accuracy:
1. Connect the Test Tool to the 5502A as shown in Figure 4-6.
For the Fluke 190-502 and 190-504 you must use the Fluke TRM50 50 Ω
terminator.
PM9091
50 OHM e.g. PM9585 or
TRM50
For 190-502 and -504 only
use TRM50!
A METER
2 CHANN. + METER
2. Set the 5502A to source an 8 ms time marker (MODE marker).
4-20
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A, B, C,
Table 4-8. Phase Measurement Verification Points
5502A-SC... MODE Frequency
10 Hz
1 MHz
10 MHz
50 OHM e.g. PM9585 or
TRM50
USE 50 OHM
TERMINATION
B A B C D
4 CHANNELS
NORMAL
FLUKE 5502A CALIBRATOR
Figure 4-6. 5502A Scope Output to Test Tool Input A
and and check that they are not outside the
D
Voltage
600 mVpp -2 to +2
300 mVpp -2 to +2
300 mVpp -3 to +3
PM9091
SCOPE
Input A, B, C, D
Reading ... Deg
perf-ver-d2.eps