PA1001A – 7/02
Page 9 of 11
ANALOG OUTPUT ADJUSTMENTS (PCA-121):
20mA ADJ
A twenty turn adjustment which is used to set current output to the
desired span corresponding to the equivalent full scale range. (i.e.
20 mA at 100 RPM).
4mA ADJ
A twenty-turn adjustment that is used to set the current output signal
to the desired zero value. (i.e. 4mA at zero RPM).
V
FS
ADJ
A twenty-turn adjustment that is used to set the voltage output to the
desired span corresponding to the equivalent full scale range. (i.e.
5VDC or 10 VDC at 100 RPM).
V
O
ADJ
A twenty-turn adjustment that is used to set the voltage output signal
to the desired zero value. (i.e. 0 VDC at zero RPM).
COARSE RANGE ADJ
A dual in line DIP switch which is located on the PCA-121 board,
which is used to perform a coarse range adjustment for the input
frequency range.
V
FS
SELECTION
A two position jumper (JP1) that is used to select the desired voltage
output range of either 0 to 5VDC or 0 to 10VDC.
CALIBRATION PROCEDURE:
In order to perform field calibration and troubleshoot the PA1001A, the following equipments are
recommended.
MANUFACTURER
PART
NUMBER
DESCRIPTION
Fluke
8060A
True RMS Multimeter
Topward
8112
Digital Function Generator
Viz
WD-755
Multi Function Counter
Spectrol
8-TOOO
Adjustment
Tool
Table - 1
(Coarse Range Adjustment):
Frequency Range
Switch
Position
50 to 100Hz
1
100 to 200Hz
2
200 to 400Hz
3
400 to 800Hz
4
800 to 1600Hz
5
1600 to 3200Hz
6
3200 to 6400Hz
7
6400 to 12800Hz
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