Extron electronic RGB 320 manual Rear Panel Switches, Diagnostic LEDs, Peaking Switch

Operating the RGB 320 Panels • Chapter 3

Diagnostic LEDs

The front panel has six diagnostic LEDs. The right-most pair monitor +15 and -15 voltages, and the middle pair monitors +8 and -8 voltages. If any of these four LEDs are not lit, the system will malfunction.

The left-most pair of LEDs will blink during RS-232 communication with a controlling device. Tx is transmit and Rx is receive.

________ Tx blinks each time a panel change has

been completed to notify the host of a change in status.

Figure 3-10. Six Diagnostic LEDs on the Front Panel

Rear Panel Switches

Switches on the rear panel affect all the video signals that come from the

RGB 320.

Peaking Switch

To the left of the DIP switches is a three-position toggle switch. If the RGB 320 is driving long cables, this switch allows

compensation for cable capacitance. The middle position is Normal and does not alter the output load. The lower position provides 50% peaking, and the upper position provides 100% peaking. Set the switch in the position that provides the best image on the output display device.

Figure 3-11. Peaking Switch and DIP Switches are Located in the Lower-right Section of the Rear Panel

DIP Switches: Sync Options and Serration Pulses

The DIP switches are located in the lower-right section of the rear panel. The factory settings are all Off. Their functions are as follows:

1LCD Select

Use the on position for an LCD output device or other digital device. In this position, the horizontal and vertical shift (centering) controls are not active. Use the off position for non-LCD or analog devices.

________ Because this switch disables the RGB 320 centering controls, when adjusting

centering from the projector, turn this switch on before adjusting the projector’s centering controls.

2Ser. Remove

Use the on position to remove serration pulses. In the off position, the RGB 320 will allow serration pulses, or it will add them if they are not already present.

3V. Sync Pulse

In the on position, this switch increases the width of the vertical sync pulse to approximately twice its original duration. The actual sync width will depend upon the frequency of the incoming signal. Use the off position for normal width.

4Neg. Sync

Use the on position for negative sync. This setting would depend upon the requirements of the output display device (projector).

5SOG

In the on position, sync on green is forced. Because the RGB 320 has three BNC connectors for output sync, there is always one output with composite and two for separate horizontal and vertical sync.

6Spare

3-5 RGB 320 Switching Interface System • User’s Manual • Extron