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C613M-A (5/05) 15
CONNECTING A PTZ DEVICE (PELCO D PROTOCOL)
NOTE:
To connect a Coaxitron PTZ device, refer to
Connecting Video Inputs
The SP04-140 supports camera control using Pelco D protocol (RS-422) for a PTZ device. You can connect only one serial PTZ device to a video
encoder. The default Pelco D device address is 0.
When the SP04-140 receives a camera control command, it transmits that command to the PTZ device. In four-wire installations, the encoder
also receives data from the PTZ device, including camera status and alarm states. It then transmits that data to the command center.
Figure 12 shows how to wire the SP04-140 to a Spectra
®
dome (refer to Table B for the specific connector pin assignments).
NOTE:
When connecting a PTZ device to the SP04-140, connect the TX+ and TX- leads to the RX+ and RX- leads between the encoder and the
PTZ device.
By default, the encoder identifies any PTZ device as a fixed camera. You must configure the encoder before you can use the PTZ device (refer to
the WS5000 operation manual).
Figure 12.
Connecting a Spectra Dome
SPECTRA
COAXIAL CABLE
TX-
TX+
RX+
TRANSMIT
TO SPECTRA
RECEIVE
FROM SPECTRA
TX-TX+ RX+
RX-
RX-
VIDEO IN (2)
1VIDEO IN ( )