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32 C2900M-B (1/03)
Use As Transparent Data Port
The serial interface offers a transparent serial data channel between the receiver and the
transmitter. A typical application for transparent data is remote control of peripheral equipment (for
example, a dome system with PTZ functions). You also can use this channel to control remotely any
external device with a serial interface. The serial data is transferred in parallel to the video and
audio data.
Transmission of transparent data is enabled only after a video connection has been established.
Also, the RS-232 interface for the transparent data port does not support hardware flow control.
For proper operation, you must configure the following in a way that they fit the associated unit:
baud rate, parity of the interface of the PelcoNet NET104A Transmission System unit, and number
of data and stop bits. Use a web browser to configure these parameters at the unit with the
configuration side.
The transparent data interface is used to control PTZ cameras remotely, to transmit data transpar-
ently between two units, or to control equipment connected to a PC COM port. Transmission of
transparent data is possible only when the units are connected. Only the data transmitting signals
are provided at this port.
Figure 20. Data Port Pin Assignments In RS-232 Mode
1 2 3 4 5
6 7 8 9
VIEWED FROM SOLDERING
SIDE OF PLUG
Pin Name Direction Description
1– N.C.
2 RXD Input Receive Data
3 TXD Output Transmit Data
4– N.C.
5 GND Ground
6– N.C.
7– N.C.
8– N.C.
9– N.C.