Table 4. Facilities Connector Pin-Outs - Simoco SDB680 Installation Manual

SDB680 – INSTALLATION GUIDE
S1 Facilities Connector
The 25-way D Type facilities connector can be programmed for any combination of digital inputs and
outputs. The connector pin-outs for the Facilities Connector are shown below in Table 7.
Table 7. Facilities Connector Pin-outs.
Pin Function
1 Digital Input
2 Digital Input
3 Digital Input
4 Digital Input
5 Digital Input
6 Digital Input
7 Digital Input
8 Digital Input
9 GPS Rx +
10 GPS Tx +
11 1PPS Rx +
Digital to Analogue Converter (DAC)
12
Output
13 Supply Voltage
Maximum current provided by the supply voltage pin (pin 13) is 1 A protected by a self resetting fuse.
The Digital Outputs are open collector and able to sink 300 mA each; the total for all outputs must not
exceed 600 mA.
Digital inputs are active low. Digital high voltages should not exceed 20 V.
The GPS Rx and 1PPS Rx connections are Differential RS422.
The "Analogue Out" connection is between 0 V and 5 V and software controlled to indicate various
functions e.g. Received Signal Strength Indication (RSSI) level.
May 15
Pin Function
14 Digital Output
15 Digital Output
16 Digital Output
17 Digital Output
18 Digital Output
19 Digital Output
20 Digital Output
21 Digital Output
22 GPS Rx -
23 GPS Tx -
24 1PPS Rx -
25 0 V
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ELECTRICAL CONNECTIONS
TNM-I-E-0046