Fluke 190-104 - Input A&B Phase Measurements Test

Performance Verification
4.6 Scope Input A, B, C, D Tests 4
4-17
190-104 20 ns/div levsine 300 mVpp 100 MHz 99.3 to 100.7
190-204 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 4-5).
2. Select the following Test Tool setup:
• Recall the created setup (e.g. SETUP 1, see section 4.4.3): press
SAVE
,
F2
RECALL , select SCREEN+SETUP 1 , press
ENTER
to recall the setup .
• Press
SCOPE
• Press
F1
– READINGS ON.
• Press
F2
– READING ... and select with
F1
– READINGS and with
the arrow keys:
Reading 1, on A, Phase ... and next A > B,
Reading 2, on B, Phase ...
and next B > A,
Reading 3, on C, Phase ...
and next C > D,
Reading 4, on D, Phase ...
and next D > C.
3. Press
A
: using
mV
RANGE
and
V
RANGE
select range 100 mV/div for A.
4. Using
TIMEsns
select the required time base setting.
5. Set the 5500A to source a sine wave according to the first test point in Table 4-7.
As no 50Ω termination is applied, the 5500 leveled sine wave output amplitude will
be twice the set value.
6. Observe the reading
A and check to see if it is not outside the range shown under the
appropriate column.
7. Continue through the test points.
8. Now check channel B, C or D in succession:
Press
TRIGGER
and select B, C or D as trigger source with
F1
,
Press B, C or D to assign vertical ‘range’ and ‘move’ to channel B, C or D,
Observe reading B, C or D.
9. When you are finished, set the 5500A to 0 (zero) Volt, and to Standby.
Table 4-7. Phase Measurement Verification Points
Time base 5500A-SC... MODE Frequency Voltage Input A, B, C, D Reading
... Deg
20 ms/div wavegen, sine, 1 MΩ 10 Hz 600 mVpp -2 to +2