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RC4000 ACU Boardset
2.1.2.2.8 J8 - Temperature Sensor
Designation
J8
Pin 1 – 3.3 V pin 2 – V_Temp pin 3 – Gnd
The Computing and Interface Board can optionally accommodate a temperature sensor interfaced into
connector designator J8. The typical temperature sensor used is Texas Instruments p/n LM61. This
temperature is rated for a full -30⁰ to +100⁰C range. Standard software on the Computing and Interface
Board does not implement this input.
2.1.2.2.9 J9 - LCD
Designation
J9
The J9 connector allows a 4 row x 40 column character LCD (see 2.2.5) to be utilized as part of the user
interface.
Note that the operable length of this connection is limited to 1 foot (30 cm) or less. The pinout
details for J9 will not be provided here as the correct cable will be supplied along with the LCD from RCI.
A six position Dip Switch "S1" on the PCB allows the LCD circuitry to be configured for 3 different display
sizes.
SWITCH
1
2
3
4
5
6
Also associated with the LCD interface is pot R26 on the PCB for setting contrast.
PCB
Pin Count
"Temp"
3
PCB
Pin Count
"LCD"
20
2x16
ON
OFF
OFF
ON
ON
ON
26
Chapter 2
Connector
Molex Friction Lock Header
Connector
Tyco Vertical Header
2x40
OFF
OFF
OFF
ON
ON
OFF
Hardware
Type #
2
Type #
8
4x40
OFF
ON
ON
OFF
OFF
ON
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