ACTi B27 Manual download pdf (Page 19)

Hardware Manual

Connecting a Serial Device (Optional)

The camera can be connected to a Pan-Tilt (PT) Scanner (Pan-Tilt Head) using the serial port

connector. This allows the zoom camera to do pan and tilt using the Pelco-D protocol. Most PT

scanners accept Pelco-D and Pelco-P protocol commands via RS-485 or RS-422 connection,

which are both supported by your camera.

Check the connection available on the PT scanner and connect it to your camera following the

procedures below.

1. Map the wires from the PT scanner to your camera using the supplied terminal block

according to one of the tables below.

Via RS-485 Connection

Terminal Block Wire Mapping

Pin Number / Label Camera Pin PT Scanner Pin

1 TX + TX + TX +

2 TX - TX - TX -

3 GND GROUND PIN

4 RX+ -

5 Rx- -

Via RS-422 Connection

Terminal Block Wire Mapping

Pin Number / Label Camera Pin PT Scanner Pin

1 TX + TX + RX +

2 TX - TX - RX -

3 GND GROUND PIN

4 RX+ RX + TX +

5 Rx- RX - TX -

NOTE: The pins of the PT Scanner may be labeled differently depending on the location or

country where the scanner is purchased. For example, some devices may have TX – pin

labeled as "A” or “485 -”, etc. Refer to the scanner documentation or contact the

manufacturer to verify the corresponding pin labels and ensure proper wiring connection.

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ACTi B27 Manual Page 19