Altinex Frequently Asked Questions, MASTER/SLAVE CONTROL RS-232, Master MX2226AT, Switchers

SWITCHERS

7.5 MASTER/SLAVE CONTROL (RS-232):

The feedback codes allow multiple MX2226AT Switchers to be connected in a Master-Slave configuration, if desired.

When the control port of two units are connected as shown below, the slave unit duplicates the actions of the master unit. The slave unit can still be controlled from its front panel or through another RS-232 control; however this configuration is used when multiple MX2226AT units must be controlled through a single RS-232 source.

Master MX2226AT	Slave MX2226AT
Terminal block pin	Terminal block pin
TX	RX
GND	GND

Master-Slave Control Port Connection of the

MX2226AT

7.6 LOOP CONTROL

In some applications, it may be necessary to switch a number of computer video sources to a single presentation display, requiring more inputs than are available from an individual switcher.

To create a larger switcher with more input, the output of the previous unit can be looped to another unit. To maintain the completeness and availability of the incoming video signal, no more than 3 units should be looped. Keep in mind that the Looping Configuration will eliminate one usable input for each looped unit. For example, if two 6-in 1-out switchers were looped together, there would be 11 usable inputs.

The loop control feature forces all looped units to select input 6 so that the incoming signal will automatically pass through. If input from switcher no. 1 is selected then input no. 6 is automatically selected on switcher no. 2, so that an incoming signal from the output of switcher no. 1 is passed to the output of switcher no. 2.

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11-IN 1-OUT SWITCHER

MX2226AT Unit #1 MX2226AT Unit #2

The coaxial cable between looped switchers must be arranged so that Input 6 always accepts the loop output.

FREQUENTLY ASKED QUESTIONS			8
No	Question	Answer
1	When I press	You must press and hold
	the RESET	the button for approximately
	button, the	2 seconds, until you hear a
	switcher does	short beeping sound until all
	not respond.	of the LED lights flash. This
	Why?	is designed to avoid
		accidental resetting of the
		unit just by touching the
		key.
2	When l press	You must press and hold
	the SOUND	the button for approximately
	button, the	2 seconds, until you hear
	switcher	the beeping sound. This is
	doesn’t	done to set the switcher in
	respond.	either BEEP ON or BEEP

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