Extron electronic RGB 580XI manual Rear Panel Features and Cabling, Installation and Setup, cont’d

Installation and Setup, cont’d

1 — DDSP (Digital Display Sync Processing) — This feature may be necessary for digital display devices such as LCD, DLP (digital light processing) and plasma displays. Use this option if the image is not displayed properly after other options, such as serration pulse and vertical sync pulse width, have been explored.

On — The interface uses DDSP instead of ADSP.

DDSP does not process the sync signal.

DDSP disables the horizontal shifting control.

Off — The interface performs sync processing operations, such as centering, with ADSP.

2 — Serr (serration pulse) — Many LCD and DLP projectors and plasma displays must have serration pulses removed from the sync signal in order to display properly. Flagging or bending at the top of the video image is a sign that the serration pulses should be removed.

On — The interface outputs serration pulses in the vertical sync interval.

Off — The interface does not output serration pulses.

3 — SOG (sync on green)

On — The interface outputs sync on green.

Off — The interface outputs separate horizontal and vertical sync (on the H and V connectors) for

RGBHV.

4 — V-Sync Width (vertical sync pulse width) — For some digital display devices, if no picture appears, the picture cuts in and out, or the picture is scrambled, try adjusting the output vertical sync pulse width or switching from ADSP to DDSP.

On — The vertical sync pulse is narrow.

Off — The vertical sync pulse is wide.

5 — Neg Sync — This switch controls sync polarity.

On — Both the horizontal and the vertical sync signals are forced to negative polarity on output.

Off — Output sync polarity follows (is the same as) input polarity.

6— Comp Sync — This switch controls composite sync output.

On — The interface outputs combined horizontal and vertical sync for RGBS.

Off — The interface outputs RGBHV or RGsB video.

Rear Panel Features and Cabling

100-240 0.5A MAX.

OUTPUTS

RG BHV

AUDIO RS-232

Tx Rx

50/60 Hz

1 2 3 4

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

2BNC output connectors — Connect coaxial cables from a display device to these BNCs for one RGBHV, RGBS, or RGsB/RsGsBs video output as follows:

R

G

B

H/HV

V

R

G

B

H/HV

V

R

G

B

H/HV

V

RGBHV

RGBS

RGsB (Sync on Green)

RsGsBs (output only if input is RsGsBs)

3Audio output connector — Cable an audio device to the interface via this female 5-pole captive screw connector. Wire the male connector as shown below.

CAUTION	Connect the sleeve to ground (GND). Connecting
	the sleeve to a negative (-) terminal will damage the
	audio output circuits.
Unbalanced Output		Balanced Output

Tip	L	Tip	L
See Caution		Ring

Sleeve (s) Sleeve (s)

Tip	R	Tip	R
See Caution		Ring

4RS-232 connector — Connect an RS-232 device (control system or PC computer) to this female 3-pole captive screw connector for two-way RS-232 communication. Software for RS-232 control is included with the interface. See the chapter three section, Remote Control, for information on how to install and use the control software and SIS commands. Wire the male connector as shown below.

Transmit	TxRx	RS-232
Receive

Ground

2-8 RGB 580xi • Installation and Setup RGB 580xi • Installation and Setup 2-9