Extron electronic SW6 SV MX AS Operation, cont’d, Selecting an input, Normal and auto-sync mode

Operation, cont’d

output video using each device’s own operating instructions. Select an input. The image should appear on the screen.

Selecting an input

To select an input using the front panel buttons, press and release the button for the desired input (auto-sync detect models must be in normal mode). The LED for the selected input lights.

Input selection can also be done by an RS-232 device or a third party contact closure device (see chapter 4, RS-232/Remote Control).

Normal and auto-sync mode

The auto-sync detect model can operate in either normal (manual switch) or auto-sync mode. Input selection by the front panel buttons is blocked while in auto-sync mode. However, the front panel LEDs remain functional and the buttons can be used to view or change the mode.

Viewing the current switch mode

The current mode can be determined at any time by pressing and holding the input 1/Mode button until either the input 2/Norm or input 3/Auto LED blinks to indicate the mode. Release the input 1/Mode button.

Conversely, if selecting input 1 and the input 1/Mode button is held too long, the current mode is displayed and input 1 is not selected.

Selecting normal mode

Press and hold the input 1/Mode and input 2/Norm buttons simultaneously. The input 2/Norm LED blinks to indicate normal mode. Release both buttons. The default input is input 1, but if you release the input/Mode 1 button before releasing the input 2/Norm button, the switcher may select input 2.

When changing mode, if the input 1/Mode button is released too soon (before the input 2 or 3 LED begins to blink), input 1 may be selected.

Selecting auto-sync mode

Press and hold the input 1/Mode and input 3/Auto buttons simultaneously. The input 3/Auto LED blinks to indicate auto- sync mode. Release both buttons. The highest-numbered input with video sync pulses present is automatically selected for output. If no sync is present, no input is selected.

When changing mode, if the input 1/Mode button is released too soon (before the input 2 or 3 LED begins to blink), input 1 may be selected.

Audio gain and attenuation

The audio level of each input can be displayed and adjusted through a range of -15dB to +9dB to ensure that there is no noticeable volume difference among sources. The audio level can be adjusted from the front

panel or by using Extron’s		Key:		= off (value 0 dB),
Windows-based control program.			B1 = slow blink (value 1dB),
1.	Press and release an input		B2 = fast blink (value 2dB),
	button to select an input.			= on (value 3dB)
	Auto-sync detect models			Input LED	-dB +dB
	must be in normal mode.
		dB	1	2 3 4	5
2.	Press and hold the Audio	+9
		+8		B2
	button until the Audio LED
	begins to blink, then release	+7		B1
	the Audio button. The audio	+6
	level for the selected input is	+5		B2
	displayed in the input 1
		+4		B1
	through 5 LEDs and the
		+3
	polarity (+ or -) is displayed
	by the +dB and -dB LEDs.	+2	B2
	Each input LED indicates 0dB	+1	B1
	when off, 1dB when blinking	0
	slowly, 2dB when blinking	-1	B1
	quickly, and 3dB when lit.	-2	B2
	The +dB LED on indicates a	-3
	positive (gain) level. The -dB	-4		B1
	LED on indicates a negative	-5		B2
	(attenuation) level. Both
		-6
	LEDs on indicate 0dB.
				B1
3.	Press and release the and	-7
		-8		B2
	buttons to increase and
		-9
	decrease the audio level.
4.	Press and hold the Audio	-10		B1
		-11		B2
	button until the Audio LED
	turns off to save the gain	-12
	value in memory and exit the	-13			B1
	audio display and adjustment	-14			B2
	mode.
		-15

3-4 Audio/Video Switchers • Operation Audio/Video Switchers • Operation 3-5