Extron Electronics 8 PLUS SWITCHER - Manual (Page 17)

Extron • Model 8 PLUS & Model 10 PLUS Switchers • User’s Manual Page 2-8
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Model 8/10 PLUS Switcher Connection to Computer
To connect the Model 8/10 to a computer, refer to the picture
below and connect the user supplied RS-232 cable from the
computer (PC) serial port to the Model 8/10 PLUS Switcher
connector labeled RS-232.
Model 8/10 PLUS Operation and Configuration
Triple Action Switching TM (RGB Delay)
This prevents image scrambling during switching time. When
an input is selected, Triple Action Switching
® does this:
1. Drop the RGB signals.
2. Wait 20 mS and then switch to the new sync signal.
3. Wait for the time delay set by the user (0.0 - 7.5 seconds)
and then switch to the new RGB signals. (During this time
the projector is setting up to match the new sync.)
SW9 is used to set the 0.0 - 7.5 second delay (See drawing
on facing page). Each position of the switch changes the
delay by 0.5 seconds and the adjustment range is 0.0 (Switch
position 0) to 7.5 seconds (Switch position F). The switcher
ships with SW9 set to the 0 position (0.0 seconds).
To change the SW9 switch position, remove the four screws
from the top of the case and lift the cover straight up. Use a
small, flat blade screwdriver to rotate the switch to the desired
switch position. The switch position can be calculated by
measuring (estimating) the period of time that the video
appears out of sync after switching to a new input, then
multiply the time period by 2 to determine the switch position.
Example:
Measured out of sync period = 4 seconds
4 x 2 = 8 (The required switch position for 4 seconds is #8.)
The switch positions above 9 are labeled in hexadecimal, i.e.
switch position 10 is labeled A on the switch. (10
Dec
= A
Hex
,
11 = B, 12 = C, 13 = D, 14 = E and 15 = F)