Fluke ScopeMeter 190 Series III, Руководство по обслуживанию

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ScopeMeter® Test Tool
Performance Verification
25
b. Press
P
.
c. Press
2
(– READING …) and select with
1
(– READINGS) and
1
(READINGS) on A | V ac .
d. Press
J
to select autoranging (AUTO in upper right LCD edge).
e. Use
j
and
k
to change the sensitivity range to select manual sensitivity ranging, and
lock the Input A sensitivity range on 500 mV/div . AUTO in upper right LCD edge
becomes ½ AUTO.
f. Use
l
to move the Input A trace zero to the center grid line.
3. Set the 5502A to source a sine wave and to the first test point in Table 10 .
4. Observe the Input A reading and check that it is within the range shown under the
appropriate column.
5. Continue through the test points.
When you are finished, set the 5502A to Standby.
Input B AC Voltage Accuracy (HF) and Bandwidth Test
To test the Input B high frequency automatic scope ac voltage measurement accuracy and the
bandwidth:
1. Connect the Test Tool to the 5502A. See
Figure 7 .
2. Select the Test Tool setup:
a. Recall the setup (see Standard Test Tool Setup ). Press
S
,
2
(RECALL) and
select SETUP , press
E
, select the setup name, and press
E
to recall the
setup.
b. Press
P
.
Table 10. HF AC Voltage Verification Points Input A
UUT Model
5502A SC... MODE levsine
UUT
Reading A
Voltage Frequency
All 2.545 Vpp 1 MHz 835 mV to 965 mV
All 2.545 Vpp 25 MHz 790 mV to 1.010 V
Models 60 MHz 2.545 Vpp 60 MHz >630 mV
Models 100 MHz 2.545 Vpp 100 MHz >630 mV
Models 200 MHz 2.545 Vpp 200 MHz >630 mV
Models 500 MHz 2.545 Vpp 500 MHz >630 mV