Input A Ac Voltage Accuracy (Hf) & Bandwidth Test - Fluke 190-104 Service Manual

4.6.10 Input A AC Voltage Accuracy (HF) & Bandwidth Test
Proceed as follows to test the Input A high frequency automatic scope ac voltage
measurement accuracy, and the bandwidth:
1. Connect the Test Tool to the 5500A as for the previous test (see Figure 4-6).
2. Select the following Test Tool setup:
•
Recall the created setup (e.g. SETUP 1, see section 4.4.3): press
RECALL
•
Press
MANUAL
•
Press
•
Using
ranging, and lock the Input A sensitivity range on 500 mV/div. (
right LCD edge disappears)
3. Set the 5500A to source a sine wave, to the first test point in Table 4-9.
4. Observe the Input A reading and check to see if it is within the range shown under
the appropriate column.
5. Continue through the test points.
6. When you are finished, set the 5500A to Standby.
UUT 5500A SC... MODE levsine
Model Voltage
all 2.545 Vpp
all 2.545 Vpp
190-104 2.545 Vpp
190-204 2.545 Vpp
, select
SCREEN+SETUP 1
F2
, then press
SCOPE
AUTO to select autoranging (
mV RANGE
and change the sensitivity range to select manual sensitivity
V
RANGE
Table 4-9. HF AC Voltage Verification Points
Frequency
1 MHz
25 MHz
100 MHz
200 MHz
4.6 Scope Input A, B, C, D Tests
, press ENTER to recall the setup .
, and select
READING 1
in upper right LCD edge)
AUTO
Reading A
835 mV to 965 mV
790 mV to 1.010 V
Performance Verification
SAVE
F2
,
.
on A | V ac
in upper
AUTO
UUT
>630 mV
>630 mV
4
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