Input A, B, C, D Ac Coupled Lower Frequency Test - Fluke 190-104 Service Manual

9. Next check channel B, C or D in succession:
Press TRIGGER
Press B, C or D to assign vertical 'range' and 'move' to channel B, C or D,
Observe reading B, C or D.
10. When you are finished, set the 5500A to 0 (zero) Volt, and to Standby.
Range
2 mV/div (Select 10 ms/div)
Set input A&B Bandwidth 20 kHz
to prevent OL due to calibrator
noise: see step 2.
5 mV/div (Select 20 μs/div).
Set input A&B Bandwidth 20 MHz
10 mV/div
20 mV/div
50 mV/div
100 mV/div
200 mV/div
500 mV/div (Select 10 ms/div)
500 mV/div (Select 20 μs/div)
1 V/div
2 V/div
5 V/div
10 V/div
20 V/div
50 V/div
100 V/div

4.6.4 Input A, B, C, D AC Coupled Lower Frequency Test

Proceed as follows to test the ac coupled input low frequency accuracy:
1. Connect the Test Tool to the 5500A as for the previous test (see Figure 4-4).
2. Select the following Test Tool setup:
•
Recall the created setup (e.g. SETUP 1, see section 4.4.3): press
RECALL
•
Press
•
F1
Press
and select B, C or D as trigger source with
Table 4-3. Volts AC Measurement Verification Points
5500A output
V ac
4 mV
10 mV
20 mV
40 mV
100 mV
200 mV
400 mV
900 mV
900 mV
2 V
4 V
9 V
20 V
40 V
90 V
200 V
, select
SCREEN+SETUP 1
SCOPE
–
READINGS ON .
4.6 Scope Input A, B, C, D Tests
F1
Input A, B, C, D Reading
Frequency
60 Hz 3.0 mV to 5.0 mV
20 kHz 8.3 mV to 11.7 mV
20 kHz 18.0 mV to 22.0 mV
20 kHz 37.5 mV to 42.5 mV
20 kHz 96.0 mV to 104.0 mV
20 kHz 180 mV to 220 mV
20 kHz 375 mV to 425 mV
60 Hz 877 mV to 923 mV
20 kHz 863 mV to 937 mV
20 kHz 1.80 V to 2.20 V
20 kHz 3.75 V to 4.25 V
20 kHz 8.63 V to 9.37 V
20 kHz 18.0 V to 22.0 V
20 kHz 37.5 V to 42.5 V
20 kHz 86.3 V to 93.7 V
20 kHz 180 V to 220 V
, press to recall the setup.
ENTER
Performance Verification
,
SAVE
F2
,
4
4-13