Extron electronic MMX 32 VGA A user manual Contact Closure Control, Updating the firmware

Remote Control, cont’d

Updating the firmware

Firmware updates periodically become available on the Extron Web site. To load a firmware update:

1.Download the update file from the Extron Web site (www.extron.com).

2.Run the Universal Switcher Control Program.

3.On the File menu, click Update Firmware. The Firmware Loader window appears (figure 3-7).

Figure 3-7 — Firmware Loader window

4.Click the Upload Firmware File button.

5.Locate the update file you downloaded from the Web site and click Open. The Universal Switcher Control Program loads the update.

The firmware update file must have an .s19 extension. If it does not have that extension it will not work properly.

6.When the program is finished loading the update, click Exit. The Universal Switcher Control Program closes.

If the firmware loader utility exits before the status bar has progressed completely across the indicator window, the firmware may be corrupted and may no longer respond to the Universal Switcher Control Program or the Firmware Loader utility. In this condition, the firmware upload can be accomplished only by using SIS commands. See Loading firmware using an SIS command on page 3-7.

Using the help system

For information about program features, you can access the help program in any of the following ways:

•From the Extron Electronics program group, double-click the Signal Enhancement Products Help icon.

•From within the Universal Switcher Control Program, click Help on the task bar.

•From within the Universal Switcher Control Program, press the F1 key.

Contact Closure Control

The MMX 32 VGA A can be controlled remotely using the optional Extron MMX 32 AAP contact closure control panel (part #70-277-01, -11, or -21) or the MMX 32 MAAP contact closure panel (part #70-277-12or -22). Each panel controls one output and has three input selector buttons and LEDs.

The contact closure system uses the pins on the Remote connector that are not assigned to RS-232 control (see the table below for pin assignments). Each contact closure pin corresponds to an input/output connection, or tie. A tie is made when one pin is connected to ground. Each pin returns a tally out signal to the remote control panel after a tie is made, lighting the control panel LED corresponding to the selected input.

For contact closure do not use pins 2 or 3.

Pin	RS-232	Contact closure	Function
1	—	In#1/Out#1 Tie input 1 to output 1
2
	TX	—	Transmit data (-)
3	RX	—	Receive data (+)
4	—	In#2/Out#1	Tie input 2 to output 1
5	Gnd	Gnd	Signal ground
6	—	In#3/Out#1	Tie input 3 to output 1
7	—	In#1/Out#2	Tie input 1 to output 2
8	—	In#2/Out#2	Tie input 2 to output 2
9	—	In#3/Out#2	Tie input 3 to output 2

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