User guide

SATELLINE-3AS NMS / NMS Epic / NMS 869 / VHF
User Guide, Version 1.0
9
3.6
Designing Systems and Networks............................................... 27
4
INTERFACE - CONNECTORS & LEDS .............................................. 28
4.1
Antenna connector ................................................................... 28
4.2
LED indicators .......................................................................... 28
4.3
D15 connector ......................................................................... 29
5
SERIAL INTERFACE ....................................................................... 30
5.1
RS-232 interface ...................................................................... 30
5.2
RS-422 interface ...................................................................... 31
5.3
RS-485 interface ...................................................................... 32
5.4
Termination of RS-422/485 lines................................................ 32
5.5
Serial interface, data format ..................................................... 33
5.6
Handshaking lines .................................................................... 34
5.6.1 CTS line...................................................................................................................34
5.6.2 CD line....................................................................................................................34
5.6.3 RTS line ...................................................................................................................35
5.6.4 DTR line...................................................................................................................35
5.6.5 DSR line...................................................................................................................36
5.7
Pause length............................................................................ 36
6
RF INTERFACE ............................................................................. 37
6.1
Transmitter .............................................................................. 38
6.2
Receiver .................................................................................. 39
6.2.1 RSSI and RSSI threshold level....................................................................................39
6.3
Error correction ........................................................................ 40
6.4
Error checking .......................................................................... 40
6.5
Dual band version .................................................................... 41
6.6
Dual channel operation............................................................. 41
6.7 TX Delay ................................................................................. 42
6.8 Sync Interval............................................................................ 42