EverFocus EKR-KB1 operating instructions Video multiplexer Javelin

5.13 Video multiplexer Javelin

5.13.1 Description

The Javelin multiplexer allows the connection of 16 input videos, which are digitalized and shown as a composite image at output. A spot service monitor supplies the display of one of the inputs.

Communication from keyboard to multiplexer is one-way. It is necessary to determine whether the connected multiplexer is a black & white or colour model, since the specifications and protocols are different in the two cases.

It is also possible to control the multiplexer indirectly, using a new generation video matrix (EKR-8/4, EKR-16/4). This type of control is described in § 5.15 - Controlling the multiplexer using a video device, page 48.

5.13.2 Direct connection

5.13.2.1 Cable

	L=1200 m
RJjack1		RJjack2
EKR-KB1	RJjack 1	RJjack 2	JAVELIN
RS485A	White	Black	RS485A
RS485B	Yellow	Green	RS485B

The connection is of the RS485 type (one-way) and the maximum distance between keyboard and multiplexer is 1200 metres.

5.13.2.2 Multiplexer settings

The Javelin multiplexer is available in two versions that differ in their control protocol.

It can only be set up using the local multiplexer keyboard. Setup the RS485 communication mode, the baud rate and A protocol.

See the respective manual.

5.13.2.3 Keyboard settings

While the keyboard is being set up, the submenu should be set as follows:









Control of a Javelin multiplexer

It is necessary to specify whether the multiplexer is a colour model () or black & white (). Four baud rate values are available.

It is only possible to connect one keyboard to each Javelin multiplexer, and therefore the identification number of the keyboard is of no importance. More than one multiplexer can be controlled by the same keyboard, as long as they are identified by different unit numbers.

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