Extron electronic MPX Plus 866 A manual Selecting the RS-232 Primary port’s baud rate

PRELIMINARY

Operation, cont’d

4. Change the volume level: Press and release the Esc (>) button once to increase the volume by 1.5%.

Press and release the Esc (>) button several more times to increase the volume by 1.5% per button push. Note the input button indication changes that occur each time the Esc (>) button is pressed and released.

NYou can press and hold the Esc (>) or View (<) button to ramp the level up or down by 3 dB per second to the high or low limit.

The figure below shows the result of pressing the Esc (>) button a total of 13 times.

Press the Esc button	Fast Blinking Button:
	26 dB attenuation
	61% volume

ESC			COMPUTER INPUTS						VIDEO INPUTS
1	2	3	4	5	6	7	8	9	10 11 12 13 14

Decrease the audio	• The input buttons display the selected output's audio volume level.
attenuation (thereby	• In this example, the lit and blinking input buttons indicate 59.5 to 61 percent of the applied audio input.
increasing the audio
level) that is applied	• The unlit and unblinking input buttons indicate an audio volume attenuation of 26 dB to 27 dB.
to the output volume
level by 1 dB per
button push.

5. Deselect Audio mode: Press and release the Audio button.

Press the Audio button to exit audio mode.

I / O

The Video button	VIDEO	AUDIO	The Audio button stops
lights green.
			blinking and lights.

All input buttons and output buttons return to unlit or background illumination.

Selecting the RS-232 Primary port’s baud rate

The matrix switcher supports the RS-232 serial communication protocol on the front panel Configuration port and the rear panel RS-232 Primary and RS-232 Secondary ports. All three ports can operate at 9600, 19200, 38400, and 115200 baud. The baud rate for the RS-232 Primary port can be viewed and changed from the front panel.

View and configure the RS-232 Primary port’s baud rate as follows:

1. Select Serial Port Configuration mode: Simultaneously press and hold all Control buttons (Enter, Preset, View, and Esc).

Press and hold the Enter, Preset, View, and Esc buttons.

C O N T R O L C O N T R O L

ENTER PRESET VIEW ESC 2 seconds ENTER PRESET VIEW ESC

All Control buttons light with one flashing.

The flashing Control button indicates the baud rate as follows:

Enter — 9600	Preset — 19200
View — 38400	Esc — 115200

2. Release the Control buttons.

3-42 MPX Plus 866 A Media Presentation Matrix Switcher • Operation