Fluke 190-104 - Page 27

Performance Verification
4.6 Scope Input A, B, C, D Tests 4
4-9
Connect the Test Tool to the 5500A as shown in see Figure 4-4.
ADC
B
NORMAL SCOPE
FLUKE 5500A CALIBRATOR
PM9091
PM9081
CONNECT TO CHANNEL A, B, C, D IN PARALLEL
50 OHM TERMINATIONNO
PM9093
PM9092
Figure 4-4. Test Tool Inputs A, B, C, D to 5500A Normal Output
1. 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
A
, then press
F4
INPUT A OPTIONS ...
• Select
Polarity: Normal | Bandwidth: 20 kHz (HF Reject) | Offset Range:
Normal .
• Press
B
, then press
F4
INPUT B OPTIONS ...
• Select
Polarity: Normal | Bandwidth: 20 kHz (HF Reject) | Offset Range:
Normal .
• Press
C
, then press
F4
INPUT C OPTIONS ...
• Select
Polarity: Normal | Bandwidth: 20 kHz (HF Reject) | Offset Range:
Normal .
• Press
D
, then press
F4
INPUT D OPTIONS ...
• Select
Polarity: Normal | Bandwidth: 20 kHz (HF Reject) | Offset Range:
Normal .
• Press
CLEAR
to clear the softkey menu, and to see the full 8 divisions screen.
2. Using
TIMEsns
change the time base to select manual time base ranging, and lock
the time base on 10 ms/div.
3. Press
A
: using
MOVE
and
MOVE
move the Input A ground level (zero icon in
the left margin) approximately to the center grid line.
4. Using
mV
RANGE
and
V
RANGE
select manual vertical ranging and set the Input A sensitivity
range to the first test point in Table 4-2.
The sensitivity ranges are indicated in the left and right lower display edge.
5. Set the 5500A to source the appropriate dc voltage.
6. Observe reading
A and check to see if it is within the range shown under the
appropriate column.
Due to calibrator noise, occasionally OL (overload) can be shown.
7. Continue through the test points.