Controls and Installation, cont’d
3If desired, change the configuration of jumper J20 (sync polarity) or J40 (vertical sync width). See “Setting internal jumpers” below.
4Set up the configuration switches. See “Setting configuration switches” on page
5If desired, attach the interface to a table or under a podium using an optional Extron mounting kit. See “Mounting the interface” on page
6Attach the interface to the computer, attach the local monitor to the interface, and attach the projector to the interface. See “Cabling” on page
If you are not using a local monitor with the RGB 103xi or the RGB 112xi, you must attach an MFTA
7Attach the interface to an audio system. See “Connecting audio” on page
8Plug the interface into a grounded AC power source.
9Turn on the computer, monitor, and projector (or other display device).
10The image from the computer should appear on the projector and monitor. If it does not, double check steps 4 through 6 and make adjustments as needed.
Setting internal jumpers
The jumpers inside the interface are set at the factory for optimal use by most systems. However, you can change a jumper setting to meet the needs of a particular system.
Changes to internal jumper settings must be performed by authorized service personnel only.
The
J20: Sync polarity jumper — This jumper adjusts the
Follow Negative output sync polarity. Horizontal
(H) and vertical (V) sync output
1can either follow input sync polarity, or be forced to negative.
•If the jumper is on pins 1 and 2, output H and V sync polarities are forced to negative.
•If the jumper is on pins 2 and 3, output sync polarities follow input sync polarity: The output sync signals’ polarity is the same as the input polarity. This is the default setting.
J40: Vertical sync width jumper — This jumper
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| adjusts the vertical sync pulse width. |
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Wide |
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| Some digital display devices have very |
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Short |
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| specific requirements for incoming |
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| sync pulse width. If no picture |
appears, the picture cuts in and out, or the | |||
picture is scrambled, try adjusting the vertical sync pulse width or switching from ADSP to DDSP.
•If the jumper is on pins 1 and 2, the output vertical sync pulse will be short (narrow).
•If the jumper is on pins 2 and 3, the output vertical sync pulse will be wide. This is the default setting.
To change the jumper settings, do the following:
1.If the power cord is attached, remove power from the interface by disconnecting the AC power cord from the unit.
2.Remove the interface cover (the top half of the enclosure), as shown in figure 6. Remove the screws from the enclosure, slide the cover slightly towards the back of the enclosure, enough to clear the gain/ peak switch, lift the cover, and place the cover upside down next to the base of the enclosure.
Do not pull on the cable that attaches the cover to the base. Doing so could disconnect the cable from its connectors.
Do not touch any switches or electronic components inside the interface. Doing so could damage the interface.
Slide cover back slightly, lift straight up.
Remove 5 screws
Figure 6 — Opening the interface cover
RGB 103/109/112xi Controls and Installation | RGB 103/109/112xi Controls and Installation |