Fluke 125B/S Calibration Guide - Page 43

HF Gain Calibration Input Connections, READY, Table 13. HF Gain Calibration Points Fast

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A B BB120 50Ω BNC Industrial ScopeMeter Calibration Adjustment 5522A CALIBRATOR BB120 PM9093/001 PM9091/001 (1.5 m) PM9092/001 (0.5 m) Figure 10. HF Gain Calibration Input Connections 3. Connect the Calibrator Scope Out to CH A & CH B with a 50 Ω terminator. Only one 50 Ω terminator should be connected at the connection farthest from the calibrator. Make sure the cable between CH A and CH B is as short as possible. 4. Set up the Calibrator: a. Supply a 1 kHz fast rising edge square wave (Output SCOPE, MODE edge). b. Set the Calibration Step in Table 13. c. Push . 5. On the Test Tool: a. Push  to start the calibration. b. Wait until READY shows as the calibration status on the display. c. Push  to select the next calibration step. 6. Repeat steps 4 through 5 for each Calibration Step in Table 13. Table 13. HF Gain Calibration Points Fast Calibration Step Delay (CL 0280) 1.0 V LF Gain (CL 0300) 0.5 V LF Gain (CL 0310) 0.1 V LF Gain (CL 0320) 2.5 V [1] After you start the first step in this table cell, other steps are done automatically. Calibrator Setting [1] (1 kHz, Scope Mode EDGE) 35

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Industrial ScopeMeter
Calibration Adjustment
35
Figure 10. HF Gain Calibration Input Connections
3.
Connect the Calibrator Scope Out to CH A & CH B with a 50
Ω
terminator. Only one 50
Ω
terminator should be
connected at the connection farthest from the calibrator. Make sure the cable between CH A and CH B is as
short as possible.
4.
Set up the Calibrator:
a.
Supply a 1 kHz fast rising edge square wave (Output SCOPE, MODE edge).
b.
Set the Calibration Step in Table 13.
c.
Push
.
5.
On the Test Tool:
a.
Push
to start the calibration.
b.
Wait until
READY
shows as the calibration status on the display.
c.
Push
to select the next calibration step.
6.
Repeat steps 4 through 5 for each Calibration Step in Table 13.
Table 13. HF Gain Calibration Points Fast
Calibration Step
Calibrator Setting
[1]
(1 kHz, Scope Mode EDGE)
Delay (CL 0280)
1.0 V
LF Gain (CL 0300)
0.5 V
LF Gain (CL 0310)
0.1 V
LF Gain (CL 0320)
2.5 V
[1]
After you start the first step in this table cell, other steps are done automatically.
5522A
CALIBRATOR
A
B
PM9093/001
PM9091/001 (1.5 m)
PM9092/001 (0.5 m)
BB120
50Ω
BB120
BNC