Extron electronic RGB 158XI Installation and Operation, cont’d Rear Panels, SOG sync on green

Installation and Operation, cont’d

Rear Panels

RGB 138xi and RGB 158xi rear panels

			R	G	B
	GAIN/	SOG DDSP SERR 75Ohm	H	V	S
	100%
	PEAK
	UNITY
100-240	50/60 Hz 0.5A			OUTPUT
	50%
			R	G	B
	GAIN/	SOG DDSP SERR SPARE	H	V	S
	100%
	PEAK
	UNITY
100-240	50/60 Hz 0.5A			OUTPUT
	50%

1 2 2 3 4 5 6

1 AC power input connector — Connect a standard IEC AC power cord here for power input (100VAC to 240VAC, 50/60 Hz).

2 Cable access openings — Cables attached to the A/V pass-through architectural adapter plates exit the enclosure here. Clamp cables in place with the supplied hardware.

3 3-position gain/peaking switch — Use this toggle switch to compensate for signal degradation caused by long (over about 125 feet) cable lengths. Choose the setting that provides the best image on the output display device. Select from these options:

• Unity (no gain or peaking) — The output level is the same as that of the input and with no added peaking.

• 50% — This setting increases the output signal level and adds 50% of the maximum peaking to the signal.

• 100% — This setting increases the output signal level and adds 100% of the maximum peaking to the signal.

If the signal cable between the interface and the display device is shorter than approximately

125 feet, and the gain/peak switch is set to a setting other than unity, the image may be overly bright (overcompensated).

If the edges of the image seem to exceed their boundaries or if thin lines and sharp edges look thick and fuzzy, try changing the gain/peak setting.

4DIP switches — Three of the four DIP switches on the rear panels are common to both the RGB 138xi and the RGB 158xi. They control sync on green (SOG) output, Digital Display Sync Processing and serration pulse removal.

The fourth switch controls video input termination (75 ohm vs. Hi Z) in the RGB 138xi, and it has no function (spare) in the RGB 158xi.

1 — SOG (sync on green)

ON — When this switch is set to On, the interface will output sync on green.

OFF — When the SOG switch is set to Off, the interface outputs both separate horizontal and vertical sync (on the H and V connectors) and composite sync (on the S connector) for RGBHV or RGBS, respectively.

2 — DDSP™ (Digital Display Sync Processing™) This feature may be necessary for digital display devices such as LCD (liquid crystal display), DLP (digital light processing) and plasma displays. Use this option if the image still is not displayed properly after all other options, such as serration pulse removal and video termination changes, have been explored.

ON — When this switch is set to On, the interface uses Digital Display Sync Processing instead of Advanced Digital Sync Processing™. DDSP does not process the sync signal.

DDSP will disable horizontal and vertical shift controls.

OFF — When this switch is set to Off, the interface performs sync processing operations, such as horizontal shifting, with ADSP.

3 — SERR (serration pulse) — Many display devices, including LCD and DLP projectors and plasma displays, must have serration pulses removed from the sync signal in order to display

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