Extron electronic RGB 324, RGB 340, RGB 326 Installation and Operation, cont’d, Mounting the RGB

Installation and Operation, cont’d

8.Set the rear panel peaking jumpers, and cable and test the buffer before fastening the buffer into the wall box. The jumpers and cables will be inaccessible after installation. See “Rear panel/circuit board features and jumpers” and “Cabling” in this chapter for details.

Mounting the RGB 340

You may need to install the cables into the wall, furniture, or conduits before installing the buffer. A drawing showing dimensions is provided in appendix B.

1.Hold the buffer against the underside of the desk or other furniture. Mark the location of holes for screws on the furniture.

2.From the side of the furniture where the interface will be located, drill 1/4” (6.5 mm) deep, 3/32” (2.4 mm) diameter pilot holes in the furniture at the marked screw locations.

3.Insert and loosely fasten four wood screws into the pilot holes, leaving only 1/4” of the screw protruding.

4.Set the internal peaking jumpers and attach the cables to the rear panel. The jumpers and cables will be inaccessible after installation. See “Rear panel/circuit board features and jumpers” and “Cabling” in this chapter for details.

5.Align the screws with the slots in the buffer’s mounting ears, and place the buffer against the surface (with the screws through the mounting ear slots).

Mounting the RGB 340

6.Slide the buffer slightly forward or backward, then tighten all four screws to fasten it into place.

Front and rear panel features

Front panel features and operation

1			H. SHIFT		1
			V. SHIFT		7
			VIDEO LEVEL
2		INPUT	AUDIO LEVEL		2			INPUT
										ACTIVE	8
3				SHOW ME/	3
	HIGH Z	75 Ohm	ADJUST	SELECT			HIGH Z	75 Ohm
4		AUDIO			4			AUDIO
	Extron			RGB 324			Extron			RGB 326
			5	6
							INPUTS		SHOW ME/	H SHIFT
									SELECT
						AUDIO	ANALOG
								HI-Z	75	V SHIFT
										VIDEO LEVEL
										AUDIO LEVEL	ADJUST
										RGB 340
					1	4	2	3	6	7	5

1Power LED — The power LED:

•Lights steadily to indicate that the buffer is receiving power.

•Blinks when the RGB 320 is busy, indicating that the Show Me/select button must be pressed a second time to send the request to display that buffer’s input (RGB 324/340).

2Input 9-pin D male connector — This port accepts analog RGBHV, RGBS, RGsB, and RsGsBs computer video signals via a monitor breakout cable (MBC) or laptop breakout cable (LBC).

3High Z/75 ohm switch — Select the video termination impedance that provides the best picture.

•Set this switch to High Z (high impedance) if a local monitor is connected, a laptop breakout cable is used, or if the picture is too dark (double-terminated).

•Set this switch to 75 ohms if no local monitor is connected or if the picture is too bright or blooming (unterminated).

4Audio input jack — This 3.5 mm female stereo jack is for left

Tip (L)	Sleeve (GND)	and right unbalanced stereo audio
		input. Wire the connector as
		shown at left.
	Ring (R)
	Tip (L)
		Sleeve (GND)

2-4 RGB 324/326/340 • Installation and Operation RGB 324/326/340 • Installation and Operation 2-5