C2904M-B (2/05) 15
Video In Video Out
Audio Out
Audio In
COM1: RS232/485 10/100 Base-T
Ethernet
Power
100-250VAC50/60Hz 100mA
COM2: RS232
Video In Video Out
Audio Out
Audio In
COM1: RS232/485 10/100 Base-T
Ethernet
Power
100-250VAC50/60Hz 100mA
COM2: RS232
TRANSMITTER
RECEIVER
LAN/WAN
TCP/IP INTRANET/INTERNET
CAMERA
MONITOR
DISPLAYING VIDEO VIA A TRANSMITTER-TO-RECEIVER CONNECTION
Figure 4. Configuration for Box-To-Box Connections
There are two ways to make a high performance multimedia transmission system for computer networks:
• One way is to use just the NET4001A as a transmitter and connect it through the computer network to a PC with a web browser at
the receiving end.
• Another way is to connect a NET4001A as a transmitter through the computer network to another NET4001A as a receiver. This is
often called a box-to-box connection because it uses two PelcoNet units.
In either case, routing dedicated cables from a camera to a monitor is not required because you can use an existing computer network for
that purpose.
The following explains a box-to-box connection.
1. First, the NET4001A transmitter and receiver need to be configured appropriately. If the units are supposed to be operated in
different subnets, a gateway IP address must be configured. Use the Live video receiver IP address field to address the destination.
Enter the settings using either a terminal program or a web browser.
2. Once all addresses are configured, under the terminal program menu, go into the “Rcp+” menu and press 1 to make the connection.
Or program the live video receive IP address and enable the live auto connect setting through the web browser. Make sure the unit
that will initiate the connection has an alarm IP address that points to the destination unit. After a few seconds, video transmission
begins and the camera scene appears on the monitor attached to the receiver.
Instead of using a terminal program or web browser for establishing a connection, you can attach a contact to the alarm input. Make
sure the alarm input is enabled.
You can use a web browser to connect to either of the two units, even during an active box-to-box connection. This way you can make
changes to the configuration and immediately see the result of the setting (for example, when changing video quality). (This is not true for
passwords, however.) If you are connected to the transmitter, the camera pictures are sent to the receiver and web browser simulta-
neously. There will be a short break in the video display on the receiver monitor whenever the web browser requests a new frame. This is
especially noticeable with the Server Push feature.
Full-duplex audio can be transmitted in parallel with the video transmission. To do so, you need to use the web browser to enable audio
on the Video Encoder Settings MPEG-1/-2 page.
Transparent data is always transmitted automatically between the two units as soon as the connection becomes active. Data bytes
entering the interface are transported to the other end transparently. There is no flow control mechanism for the data channel. Overflow-
ing the serial interface will cause data loss.
To sever the connection from either end, in the “Rcp+” menu press 3 (or disable the alarm).