5Video input termination toggle switch (RGB 500 AKM only) — The toggle switch on the front panel allows you to select video input impedance. Set the toggle switch to the top position for high Z when a local monitor is connected, or set it to the bottom position for 75 ohm impedance when no local monitor is connected.
6DIP switch access cover and DIP switches — Use a screwdriver to remove the cover to gain access to the DIP switches. These
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| eight DIP switches, numbered 1 through 8 from left to |
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| right, control sync on green, sync processing, serration | |
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| pulse, composite sync output , force negative sync |
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| options, vertical sync pulse width, and composite |
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| sync routing. |
1 — SOG (sync on green)
ON — When this switch is set to On (sync on green), the interface outputs sync on green.
OFF — When the SOG feature is set to Off, the interface outputs either separate horizontal and vertical sync signals (on the H/HV and V connectors) or a composite sync signal (on the H/HV connector), depending on how DIP switch 4 is set. (Default setting.)
2 — DDSP (Digital Display Sync Processing)
ON — When this switch is set to On, the interface uses Digital Display Sync Processing instead of ADSP (Advanced Digital Sync Processing). Use this option if the image still isn’t displayed properly after other options (changes to sync width, serration pulses, and video termination) have been explored.
Turning on DDSP will disable horizontal shift control.
OFF — When this switch is set to Off, the interface uses ADSP. (Default setting.)
3 — SERR (serration pulse)
Many display devices, including LCD and DLP projectors and plasma displays, must not have serration pulses in the vertical sync signal in order to display images properly. Flagging or bending at the top of the video image is a sign that the serration pulses should be removed.
ON — When this switch is set to On, serration pulses are output.
OFF — When this switch is set to Off, serration pulses are not output. (Default setting.)
4 — Composite sync output
ON — When this switch is set to On, a composite sync signal (H and V combined) is output on the black BNC connector.
OFF — When this switch is set to Off, horizontal sync is output on the H/HV (black) connector, and vertical sync is output on the V (yellow) connector. (Default setting.)
5 — Force negative H & V sync polarity
ON — When this switch is set to On, horizontal and vertical sync output are forced to negative.
OFF — When this switch is set to Off, horizontal and vertical sync follow the input sync polarity. (Default setting.)
