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RGB 460xi Series • Installation and Operation
Installation and Operation, cont’d
2-8
5 — Vertical sync pulse width — Try adjusting the output
vertical sync pulse width if no picture appears, the picture
cuts in and out, or the picture is scrambled.
Off — The vertical sync pulse is wide.
On — The vertical sync pulse is narrow.
N You can also try switching from ADSP to DDSP, as
explained in the description for DIP switch 3 on the
previous page.
6 — Negative sync — This switch controls sync polarity.
Off — Output sync polarity follows (is the same as) input
polarity.
On — Both the horizontal and the vertical sync signals are
forced to negative polarity on output.
7 & 8 — Composite sync routing — These switches work
together to route local monitor signals for Macintosh 13”
monitors and all other Macintosh and VGA-type monitors.
N To be valid, these switches must be set so that one is
Off and the other is On. If both are set to On or Off,
composite sync routing will not function.
7 (On), 8 (Off) — Sync routing to 15-pin HD local monitor
for all Macintosh (non-13") and VGA monitors
(default).
7 (Off), 8 (On) — Sync routing to 15-pin HD local monitor
for a Macintosh 13" monitor.
b
RGB video output connectors — Attach coaxial cables from the
interface to the display device via these female BNC connectors.
These BNCs are on red, green, blue, black, and yellow pigtail
wires secured to the interface by the tie wraps.
For RGBHV output: R is red, G is green, B is blue, H is black,
and V is yellow.
For RGBS output: R is red, G is green, B is blue, and S is black.
For RGsB output: R is red, G is green, and B is blue.
c
Gain switch — To compensate for cable resistance and
capacitance, slide this switch to select the level of video gain that
yields the sharpest picture:
Normal (bottom position) — unity gain (no signal boost).
Medium (middle position) — mid-level peaking and gain.
Maximum (top position) — maximum amount of peaking and
gain. (Select this for use with longer cables.)