microHAM ARCO Manual page 41

Wiring for three wires pot with CENTER, LOW (left) and HIGH (right) leads. Resistance between
LOW and CENTER leads should decrease towards CCW limit.
POTENTIOMETER
LOW side
CENTER
HIGH side
Wiring for two wire rheostat with LOW and HIGH leads. Resistance between LOW and HIGH
leads should decrease towards CCW limit.
RHEOSTAT
LOW side
HIGH side
Wiring for simple magnetic reed contact, leads have no polarity and can be reversed without
any adverse effect.
RHEOSTAT
A
B
Wiring for three wires (1 output) Hall sensor. If sensor has no internal source driver or has low
side (open collector) output with no internal pull up resistor, connect any small 4.7Kohm –
10Kohm resistor between its output and positive power lead. You can connect it directly
between terminal ports 2 - 3.
HALL SENSOR
GND
OUTPUT
POWER +
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SENSOR: POT
ROTATOR PORT NAME
SENSOR LO
SENSOR C
SENSOR HI
SENSOR: RHEO
ROTATOR PORT NAME
SENSOR LO
SENSOR HI
SENSOR: REED CONTACT
ROTATOR PORT NAME
SENSOR LO
SENSOR C + HI
SENSOR: HALL or PWM
ROTATOR PORT NAME
SENSOR LO
SENSOR C
SENSOR HI
PIN NUMBER
1
2
3
PIN NUMBER
1
3
PIN NUMBER
1
2 + 3
PIN NUMBER
1
2
3
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