GE TruSat - TruSat Technical Specifications

TruSat Technical Reference Manual
3–8
Display board connector (X12)
Pin # Signal Name I/O Description
1 V_ON PWR +3 V regulated voltage from DC line
2 GND GND Non-isolated ground
3 BACKLIGHT_CUR O Backlight supply current
4 BACKLIGHT_CUR O Backlight supply current
5 BACKLIGHT_RET_CUR I Backlight return current
6 BACKLIGHT_RET_CUR I Backlight return current
7 BATT+ PWR Battery voltage, isolated by ferrite
8 GND GND Non-isolated ground
9
__________
LCD_EN
O Enable signal for Display board regulator
10 GND GND Non-isolated ground
11 GRN_AC_LED O Supply voltage for DC line power LED
12 GND GND Non-isolated ground
13 SPARE_KEY0 I/O Unused
14 GND GND Non-isolated ground
15 SPARE_KEY1 I/O Unused
16 GND GND Non-isolated ground
17 I2C_SDAT O I
2
C bus, serial data
18 GND GND Non-isolated ground
19 I2C_SCLK O I
2
C bus, serial clock
20 GND GND Non-isolated ground
21 ALARM_SW I Alarm button signal, active high
22 GND GND Non-isolated ground
23 ON/OFF I Power button signal, active low
24 GND GND Non-isolated ground
25 ALARM_LED_RED O Alarm LED, red
26 GND GND Non-isolated ground
27 ALARM_LED_YEL O Alarm LED, yellow
28 GND GND Non-isolated ground
29 V_ON PWR +3V regulated voltage from DC line
30 GND GND Non-isolated ground