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C
ALIBRATION
& G
AIN
S
ELECTION
4
9
CALIBRATION, GAIN SELECTION AND ADJUSTMENTS
4.1
ZERO CALIBRATION
Close appropriate switches to obtain desired gain.
See Table 4.1 and 4.2 for proper selection. Gain
selection is the initial step for ZERO calibration. This
also provides course SPAN calibration as well.
Figure 4.1
—
Switches & Jumper Locations
R4, R5 Not installed
R4 R5
V
U
T
S
R
Q
S3
1 2 3 4 5 6 7 8 9
GAIN
S1
C B
R7
S8 S7
A
SOLDERSWITCH
R29
R28
1 2 3 4 5 6 7 8 9
OFFSET
S2
USED FOR
FACTORY
CALIBRATION
JUMPER
FUNCTION
Test Segment
DUMMY ZERO
1XXX.0
1XX.X0
1X.XX0
1.XXX0
V
U
T
S
R
Q
R7 SMT Not installed
Not installed
DISPLAY
BOARD
MAIN
BOARD