Operation, cont’d
Front Panel Controls and Indicators
Figure 3-1 shows the controls and indicators on the front panel of the SW2 VGAcc and SW2 RGBHVcc switchers (the front panels of the two models are identical).
Front panel buttons and LEDs
1Active LED — A lit LED indicates that the switcher is active.
1
12
SW2 VGA/RGB SERIES SWITCHER
2
Figure 3-1 — Front panel (SW2 VGAcc and SW2
RGBHVcc front panels are identical.)
2Input selection buttons and LEDs — Use the front panel buttons to manually select between inputs 1 or 2. The LED of the selected input lights when active.
Front Panel Operations
Select input 1 or 2 by pressing the appropriate input button. The corresponding input LED lights.
Troubleshooting
Problem: The display device connected to the switcher output has a bad/scrambled image.
Solution 1: The display device connected to the output of the switcher may not be compatible with the computer’s video output. VGA / SVGA / XGA / SXGA graphics cards operate at multiple resolutions and refresh rates with newer modes (such as 1920 x 1400) running as high as 79 KHz. Check the operation manual on both the computer graphics card and the display device to ensure that they are compatible.
Solution 2: The RGB, VGA, or MAC input or output cable may have a bad sync line. Try running the sync through another cable.
Problem: The unit does not pass any signals.
Solution: Verify that the unit is getting power by checking the front LED. If the LED is not on, the AC power source may be faulty or the unit may have an internal failure.
Problem: When controlling the switcher through the contact closure port, Input 2 can be selected for an instant, but then the unit quickly switches back to Input 1.
Solution: The control system may be providing a latching contact closure. The SW2 models require a momentary closure to select Input 2.
Problem: When connecting a MAC Quadra computer directly to the SW2 VGAcc input, the computer is booting up in the 13" RGB monitor resolution (640 X 480). How can the computer be forced to boot in the 21" mode?
Solution: Use a P/2 DA2xi distribution amplifier to split the signal between the local monitor and the switcher input. The computer sees the 21" local monitor attached to the
P/2 DA2xi loop through connector and boots up in that high resolution mode.
If you are still experiencing problems, call the Extron S3 Sales & Technical Support Hotline for further assistance.
SW2 VGAcc and SW2 RGBHVcc • Operation | SW2 VGAcc and SW2 RGBHVcc • Operation |