Fluke 125B/S Calibration Guide - Page 25

Input B Frequency Measurement Accuracy Test, Connect the Test Tool to the Calibrator. See

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Input B Frequency Measurement Accuracy Test To test the Input B frequency measurement accuracy: 1. Connect the Test Tool to the Calibrator. See Figure 4. A B BNC Industrial ScopeMeter Performance Verification 5522A CALIBRATOR BB120 50Ω BNC Figure 4. Test Tool Input B to Calibrator Scope Output 50 Ω 2. Set up the Test Tool: a. Push to select auto ranging (AUTO shows at the top of the display). b. Push . c. Push to open the INPUT B MEASUREMENTS menu. d. Select Hz. e. Push  twice to close the menu. f. Push . g. Push to open the SCOPE SETTINGS menu. h. Make these selections: • Trigger Input: B • Update: Free Run • Type: Normal • Waveform: Normal 3. Set up the Calibrator: a. Supply a leveled sine wave of 600 mV peak-to-peak (SCOPE output, MODE levsine). b. Push . 4. For each Output in Table 3: a. On the Calibrator, supply the frequency listed. Start with 1 MHz. b. Compare the Input B main reading on the Test Tool with the reading range listed in Table 3. 17

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Industrial ScopeMeter
Performance Verification
17
Input B Frequency Measurement Accuracy Test
To test the Input B frequency measurement accuracy:
1.
Connect the Test Tool to the Calibrator. See Figure 4.
Figure 4. Test Tool Input B to Calibrator Scope Output 50
Ω
2.
Set up the Test Tool:
a.
Push
to select auto ranging (AUTO shows at the top of the display).
b.
Push
.
c.
Push
to open the INPUT B MEASUREMENTS menu.
d.
Select
Hz
.
e.
Push
twice to close the menu.
f.
Push
.
g.
Push
to open the SCOPE SETTINGS menu.
h.
Make these selections:
•
Trigger Input:
B
• Update:
Free Run
• Type:
Normal
• Waveform:
Normal
3.
Set up the Calibrator:
a.
Supply a leveled sine wave of 600 mV peak-to-peak (SCOPE output, MODE levsine).
b.
Push
.
4.
For each Output in Table 3:
a.
On the Calibrator, supply the frequency listed. Start with 1 MHz.
b.
Compare the Input B main reading on the Test Tool with the reading range listed in Table 3.
5522A
CALIBRATOR
A
B
50Ω
BB120
BNC
BNC