ACTi A21 Hardware Manual

Also see for A21: Hardware manual

ACTi A21 Hardware Manual Manual pdf 23 page image

www.acti.comHardware Manual23How to Connect a Serial DeviceThe camera can be connected to a Pan-Tilt (PT) Scanner (Pan-Tilt Head) using the serial portconnector. This allows the zoom camera to do pan and tilt using the Pelco-D protocol. Most PTscanners accept Pelco-D and Pelco-P protocol commands via RS-485 connection, which areboth supported by your camera.Check the connection available on the PT scanner and connect it to your camera following theprocedures below.1. Map the wires from the PT scanner to your camera using the supplied terminal blockaccording to the table below.Via RS-485 ConnectionTerminal Block Wire MappingLabel Camera Pin PT Scanner PinGND GROUND PIND- RS485 D- DATA- (TX-)D+ RS485 D+ DATA+ (TX+)NOTE: The pins of the PT Scanner may be labeled differently depending on the location orcountry where the scanner is purchased. For example, some PT devices may have RS-485DATA+ pins labeled as “TX+”, “RX+”, "A” or “485+”, etc. Refer to the scanner documentationor contact the manufacturer to verify the corresponding pin labels and ensure proper wiringconnection.CAUTION: Incorrect wiring may cause damage to the connected devices.DISCLAIMER: ACTi will not be responsible for any damage caused by improper wiring.2. Connect a ground wire to one of the GND terminal pin to complete the connection.3. After mapping the pins, connect the terminal block to the Serial Port connector of thecamera.For Serial Port Use