Fluke ScopeMeter 19 B Series, Service Manual

Page: 39 / 86

Performance Verification
4.6 Scope Input A&B Tests
4
4-15
•
Press
READING 1
, and select
on A | Hz
.
•
Press
READING 2
, and select
on B | Hz
.
3. Using and select range 100 mV/div for A and B.
4. Using select the required time base setting.
5. Set the 5500A to source a sine wave according to the first test point in Table 4-6.
As no 50
Ω
termination is applied, the 5500 leveled sine wave output amplitude will
be twice the set value.
6. Observe the readings (
1.A
and
2.B
) and check to see if it is within 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 4-6. Input A&B Frequency Measurement Accuracy Test
Model Time base 5500A-SC... MODE Voltage Frequency Input A&B Reading
all 20 ms/div wavegen, sine 600 mVpp 16 Hz 15.90 to 16.10
192B-C 20 ns/div levsine 300 mVpp 60 MHz 59.68 to 60.32
196B-C, 215C 20 ns/div levsine 300 mVpp 100 MHz 99.3 to 100.7
199B-C, 225C 20 ns/div levsine 300 mVpp 200 MHz 198.8 to 201.2
Note
Duty Cycle and Pulse Width measurements are based on the same
principles as Frequency measurements. Therefore the Duty Cycle and
Pulse Width measurement function will not be verified separately.
4.6.7 Input A&B Phase Measurements Test
Proceed as follows to test the phase measurement 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 1 (see section 4.4.3): press ,
RECALL
,
select
SETUP 1
, press
RECALL SETUP
.
•
Press
•
Press
READING 1
, and select
on A | Phase
.
•
Press
READING 2
, and select
on B | Phase
.
3. Using and select range 100 mV/div for A and B.
4. Using select the required time base setting.
5. Set the 5500A to source a sine wave according to the first test point in Table 4-6.
As no 50
Ω
termination is applied, the 5500 leveled sine wave output amplitude will
be twice the set value.