Fluke ScopeMeter 19 B Series, Руководство по обслуживанию

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Fluke 19xB-19xC-2x5C
Service Manual
4-16
6. Observe the reading
1.A
and
2.B
and check to see if they are not outside the range
shown under the appropriate column.
7. Continue through the test points.
8. When you are finished, set the 5500A to 0 (zero) Volt, and to Standby.
Table 4-7. Phase Measurement Verification Points
Time base 5500A-SC... MODE Frequency Voltage Input A&B Reading ...Deg
20 ms/div wavegen, sine, 1 M
Ω
10 Hz 600 mVpp -2 to +2
200 ns/div levsine 1 MHz 300 mVpp -2 to +2
20 ns/div levsine 10 MHz 300 mVpp -3 to +3
4.6.8 Time Base Test
Proceed as follows to test the time base accuracy:
1.
Connect the test tool to the 5500A as shown in Figure 4-5.
al55sca.bmp
Figure 4-5. 5500A Scope Output to Test Tool Input A
2. Set the 5500A to source a 8 ms time marker (MODE marker).
3. Select the following test tool setup:
•
Reset the test tool
•
Using and select manual vertical ranging, and set the Input A sensitivity
range to 5V (probe A is 10:1, so input sensitivity is 500 mV/div).
•
Using change the time base to select manual time base ranging, and lock
the time base on 10 ms/div).
•
Using move the trace to the left. After moving the trace 2 divisions, the
trigger delay time with respect to the first vertical grid line will be indicated in