Extron electronic MPX 866 A manual Selecting the Baud Rate of the RS-232 Primary Port

Selecting the Baud Rate of the RS-232 Primary Port

The matrix switcher supports the RS-232 serial communication protocol on the font 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 rates.

The baud rate for the primary port is variable can be viewed and changed from the front panel.

NOTE: Baud rate is protected when front panel Lock mode 2 is selected. You can view the rate in Lock mode 2 but you cannot adjust it from the front panel (see

“Setting the Front Panel Locks (Executive Modes)” on page 47).

View and configure the serial communications settings of the switcher as follows:

1.Enter 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.

CONTROL		CONTROL
		2 seconds
ENTER PRESET VIEW	ESC	ENTER PRESET	VIEW	ESC
		All Control LEDs light with one flashing.
		Release the button.
		The flashing Control LED indicates the
		baud rate as follows:
		Enter — 9600	Preset — 19200
		View — 38400	Esc — 115200

NOTE: If front panel Lock mode 2 is selected and you try to perform step 2, the actions are ignored and the Enter, Video, and Audio buttons flash.

2.Change a value: Press and release the button that relates to the desired value.

Press and release the button to configure the

baud rate as follows:
Enter — 9600	Preset — 19200
View — 38400	Esc — 115200

In this example, the port is set to 38400 baud.

CONTROL

ENTER PRESET VIEW ESC

3.Exit the Serial Port Configuration mode: Press and release an input or output button.

Press and release an input or output button.

5

CONTROL

ENTER PRESET VIEW ESC

All Control LEDs return to the unlit state.

NOTE: The switcher requires some time to save the new serial port settings. Wait

at least 5 minutes before removing power from the switcher or the settings may be lost.

MPX 866 A Media Presentation Matrix Switcher • Operation 50