User guide

Connecting a CCTV Keyboard

TheHDR1800supportsallRS-232andRS-422CCTVkeyboardssupportedin

NextivaVMS.TheHDR1800providestwoserialportsforconnectingCCTV

keyboards:

COM1:RS-232(DB9)

COM2:RS-422(DB9)

► To connect a CCTV keyboard

1. UsethefollowingwiringschemetoconnecttheCCTVkeyboard’sserial

cabletothecorrespondingserial(DB9)portonthebackoftheHDR1800.

RS-232 DB9

Pin Number

Signal on CCTV

Keyboard Cable

RS-422 DB9

Pin Number

Signal on CCTV

Keyboard Cable

2 RxD  1 Tx-

3 TxD  2 Tx+

5 Signalground  3 Rx+

7 RTS  4 Rx-

8 CTS  5 Signalground

Oncetheconnectionisdone,youmustsetthebaudrate,parity,andother

parametersfortheserialportinNextivaVMSControlCenter.

Connecting a CCTV Keyboard