Fluke 93 - Page 102

5-6
CALIBRATION ADJUSTMENT PROCEDURE
H1. Hardware pulse response
of the attenuation
Purpoed:
optimal pulea response of the
<>1
attenuation circuit.
Calibration equipment:
Philips
PM 61 34 Function Generator
Calibration eetup:
Procedure:
A
•
Apply a square wave with a frequency
of
1 kHz,
amplitude 300 mV peak-to-peak (between 0 mV
and -t-300 mV) to both channels A and B,
Use 50Q
terminations.
B
•
Turn trimmer C2209 on the analog A2 PCB
to get the best channel A pulse response on the LCD
(least distorted waveform). The position
of trimmer C2209 can be found in section 10: figure 10.3
(A2 PCB layout
SMD).
C
-
Turn trimmer
C2109
on the anaog
A2 PCB to get the best channel B pulse response on the
LCD. The position
of
trimmer
C2109can be found in section 10: figure
10.3
(A2 PCB
layout
SMD).
D
•
Press the READY softkey.
H2. Hardware pulse response of the *10 attenuation
Purpose:
optimal
pulse
response of the
*1
0 attenuation circuit.
Calibration equipment:
Philips PM 5134 Function Generator
Calibration setup:
See calibration setup H1
.