Fluke 125B/S Calibration Guide - Page 37

Table 9. V DC and V AC High Voltage Verification Points, Sensitivity, Oscilloscope, Range, Meter

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Industrial ScopeMeter Performance Verification 2. Setup V ac and V dc for Input A on the Test Tool: a. Push to select auto ranging (AUTO shows at the top of the display). b. Push . Note For this procedure, do not push  . c. Push  to open the INPUT A MEASUREMENTS menu. d. Select V ac. e. Push . f. Push  to open the INPUT A MEASUREMENTS menu. g. Select V dc. V dc becomes the main reading, V ac is the secondary reading. 3. Setup V ac and V dc for Input B on the Test Tool: h. Push . i. Push  to open the INPUT B MEASUREMENTS menu. j. Select V ac. k. Push . l. Push  to open the INPUT B MEASUREMENTS menu. m. Select V dc. 4. Move the Input A and Input B ground level to the center grid line. 5. Push  to switch between moving A or B. 6. If A or B is not at the center, push  to move them to the center. 7. For each sensitivity value listed in Table 9: a. On the Test Tool, push  or  to set the Input A and Input B sensitivity. The range is listed in the second column of Table 9. b. Set up the Calibrator: i. Supply the AC voltage (NORMAL output, WAVE sine) listed in Table 9. ii. Push . c. Compare the main reading (V-dc) and secondary reading (V-ac) to the readings in Table 9. Table 9. V DC and V AC High Voltage Verification Points Sensitivity (Oscilloscope) Range (Meter) 200 V/div 500 V Calibrator Output V rms Calibrator Frequency 0 V +500 V -500 V 500 V 500 V DC DC DC 60 Hz 10 kHz Main (DC) Reading A-B -000.5 to +000.5 +497.0 to +503.0 -497.0 to -503.0 Secondary (AC) Reading A-B 494.0 to 506.0 486.0 to 514.0 29

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Industrial ScopeMeter
Performance Verification
29
2.
Setup V ac and V dc for Input A on the Test Tool:
a.
Push
to select auto ranging (AUTO shows at the top of the display).
Note
For this procedure, do not push
.
b.
Push
.
c.
Push
to open the INPUT A MEASUREMENTS menu.
d.
Select
V ac
.
e.
Push
.
f.
Push
to open the INPUT A MEASUREMENTS menu.
g.
Select
V dc
.
V dc becomes the main reading, V ac is the secondary reading.
3.
Setup V ac and V dc for Input B on the Test Tool:
h.
Push
.
i.
Push
to open the INPUT B MEASUREMENTS menu.
j.
Select
V ac
.
k.
Push
.
l.
Push
to open the INPUT B MEASUREMENTS menu.
m.
Select
V dc
.
4.
Move the Input A and Input B ground level to the center grid line.
5.
Push
to switch between moving A or B.
6.
If A or B is not at the center, push

to move them to the center.
7.
For each sensitivity value listed in Table 9:
a.
On the Test Tool, push
or
to set the Input A and Input B sensitivity.
The range is listed in the second column of Table 9.
b.
Set up the Calibrator:
i.
Supply the AC voltage (NORMAL output, WAVE sine) listed in Table 9.
ii. Push
.
c.
Compare the main reading (V-dc) and secondary reading (V-ac) to the readings in Table 9.
Table 9. V DC and V AC High Voltage Verification Points
Sensitivity
(Oscilloscope)
Range
(Meter)
Calibrator Output
V rms
Calibrator
Frequency
Main (DC)
Reading A-B
Secondary (AC)
Reading A-B
200 V/div
500 V
0 V
DC
-000.5 to +000.5
+500 V
DC
+497.0 to +503.0
-500 V
DC
-497.0 to -503.0
500 V
60 Hz
494.0 to 506.0
500 V
10 kHz
486.0 to 514.0