Fluke ScopeMeter 19 B Series, Service Manual

Page: 38 / 86

Fluke 19xB-19xC-2x5C
Service Manual
4-14
4. Using and move the Input A and B ground level (indicated by the zero icon
in the left margin) to the center grid line.
5. Using and select manual vertical ranging, and set the Input A and B
sensitivity range to 100 mV.
6. Set the 5500A to source the appropriate ac voltage and frequency, according to
Table 4-5.
7. Observe the readings (
1.A
and
2.B
) and check to see if it is within the range shown
under the appropriate column.
8. Continue through the test points.
9. When you are finished, set the 5500A to 0 (zero) Volt, and to Standby.
Table 4-5. Volts Peak Measurement Verification Points
5500A output, Vrms (sine) 5500A Frequency Reading A-B
212.13 mV (0.6 V pp) 1 kHz 0.56 to 0.64
4.6.6 Input A&B Frequency Measurement Accuracy Test
Proceed as follows to test the frequency measurement accuracy:
1.
Connect the test tool to the 5500A as shown in Figure 4-4. Do NOT use 50
Ω
terminations!
al55scab.bmp
Figure 4-4. 5500 Scope Output to Test Tool Input A&B
2. Select the following test tool setup:
•
Recall the created SETUP 1 (see section 4.4.3): press ,
RECALL
,
select
SETUP 1
, press
RECALL SETUP
.
•
Press