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12 C2900M-B (1/03)
OVERVIEW
NOTE: This manual refers to the PelcoNet NET104A Transmission System when discussing features,
functions, or specifications that apply to the transmitter. “Receiver,” as used in this manual, refers to
a PelcoNet NET101R/R-A Transmission System receiver unless otherwise noted.
DESCRIPTION
The four-channel PelcoNet NET104A Transmission System lets you transmit live video, audio, and
data from four sources over existing Ethernet computer networks (either intranet or Internet) using
the TCP/IP protocol. The NET104A can multiplex to provide a single view or quad view. You can
view the pictures on a CCTV or PC monitor.
The NET104A is a transmitter and is the only unit required to use the PelcoNet NET104A Transmis-
sion System. The transmitter connects any four NTSC or PAL video sources (cameras, for example)
to the computer network.
Depending on how you want to display the video, you can use a transmitter and a PC or a
transmitter and a NET101R/RA receiver. There are two ways to display remote video:
•A hardware receiver and attached standard NTSC or PAL monitor
•Web browser using any PC on the network to display the video
A NET104A transmitter and NET101R receiver can form a standalone system for data transfer
without a PC. The system can be extended to include additional transmitters and receivers so video
sequences from one transmitter can be received by several receivers simultaneously.
Transmitters and receivers are identified by IP addresses, just like any other equipment connected
to a computer network.
There is a bi-directional serial interface for remote control of peripherals like PTZ cameras. The
NET104A transmits full-duplex audio.
In appropriately configured networks, the multicast function permits the simultaneous video
transmission in real time to several NET101R/RA receivers. For this to work, the ICMP (multicasting
protocol) must be implemented in the network.