GE TruSat - TruSat Trend Download Option Guide; TruSat Trend Data Collection and Management

Troubleshooting
3–11
3.4 Trend Download board (RS-232) components
X1
X2
X3
1
24
3
S1
Disable
Enable
1
2
19
20
Side View
X2
F2
Figure 3-5. Trend Download board
F2 Fuse block and fuse for alarm relay switch
S1 Alarm relay enable/disable switch
X1 Connector, Trend Download board to System board, 20 pin
X2 Connector, RS-232 Din 6
X3 Jumper set, board configuration identification, 4 pin
Trend Download board connectors
System board connector (X1)
Pin # Signal Name I/O Description
1 VDD PWR +3 V power signal, isolated by ferrite
2 VDD PWR +3 V power signal, isolated by ferrite
3 OPT_BRD_ID O Trend Download board ID, analog signal
4 SPI_DIN I SPI data in signal
5 GND GND Non-isolated ground
6 SPI_DOUT O SPI data out signal
7 GND GND Non-isolated ground
8 SPI_CLK I SPI clock
9 GND GND Non-isolated ground
10
_______________________
SPI_CS_OPTION0
I SPI chip select 0
11
______________________
SPI_CS_OPTION1
I SPI chip select 1
12 GND GND Non-isolated ground
13 UART_TXD I RS-232 transmit data
14 UART_RXD O RS-232 receive data
15 UART_CTS O RS-232 hardware handshaking
16 UART_RTS I RS-232 hardware handshaking
17 GND GND Non-isolated ground
18 ALARM_EVENT I Alarm event annunciation
19 V_BATT PWR Battery voltage
20 V_BATT PWR Battery voltage