Philips SCOPEMETER PM93 Service Manual page 115

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CALIBRATION ADJUSTMENT PROCEDURE
M3. Channel A, 300 mV range: zero for open input
Purpose: zero channel A in the 300 mV range with open input.
Calibration equipment:
none
Calibration setup:
Channel A BNC open.
Procedure:
A - Remove any connection from the channel A BNC.
B - Press the READY softkey.
M4/5/6n. Channel A, 300 mV/3V/30V/300V range: gain calibration
4
11611
~~,~""
Purpose: calibration of the channel A gain in the 300 mV, 3V, 30V and 300V
ranges.
Calibration equipment:
Fluke 51 OOB Calibrator
Calibration setup:
Connect the banana jack COM to the BNC common
Fluke 5100B
BNC to BANANA--
(female) (male) ~--------'
Procedure:
A - Apply 300 mV DC to channel A.
B - Press the READY softkey.
0 0 0 0 0
Dc::::::Jc::::::JD
0 0 0 0 0
D O D
DDBDD
0 0 0 0 0
o
DOD
ScopeMeter
C - Change the input voltage according to table 5.3. After each calibration press the READY softkey.
Use the adjust/select keys to advance/go back in the list.