Network Computing Devices Universal Video Interface Series IN2001 User Manual
Page 17
15
©1996-1997 - INLINE, INC. IN2000 / IN2001 OPERATION MANUAL - REV. 2.1 12/11/99
The output image is very bright and overdriven looking with poor contrast.
Solution 1: The loop through cable is probably being used without a local monitor and the signal is
therefore unterminated. Use either a local monitor or a termination plug at the monitor loop-
through connector on the IN5100 Series cable. If this is not the problem try #2.
Solution 2: Verify the gain settings on the IN2000 / IN2001 RGB gain pots. If they are set to a very
high gain level, reduce the gain as required.
Solution 3: Check the contrast and brightness settings on the display device. Many CRT type display
devices look best with the contrast set toward the upper end of the adjustment range (75 -
95%) and the brightness set towards the middle of the adjustment range (40 - 60%).
The output image is ghosting.
Solution:
The IN5100 Series cables are designed to plug directly into the computer’s graphic card and
a short (6 to 12 ft) monitor cable attached to the loop through output. An extension cable on
the input or a very long monitor cable may cause this problem. Do not attempt to extend the
length of the IN5100 Series monitor loop cable.
When using the IN2000 and an IN5101A with a VGA signal, the image from the RGBS
output is violet with a very low green signal.
Solution:
The local monitor may be monochrome. If it is a monochrome monitor, the IN9030 mono
adapter must be used - the output of the IN2000 will be monochrome.
The output image from the IN2000/2001 has horizontal black bars throughout the image
when interfacing to TTL video signals (IN5100 cables ending with "T").
Solution:
The Horizontal Blanking Control may need adjustment. First check the Horizontal Position
Control to ensure it is not causing the problem. If the problem persists, adjust the Horizontal
Blanking Control according to the procedure on Pages 8 & 9.
The output image is too green.
Solution 1: The dip switches may be set for Sync on Green output. Try changing the dip switches to
factory default settings (see Page 9) so the unit outputs an RGBS signal.
Solution 2: Some MACII and Quadra computers output an RGsBS signal. If an IN5161A cable is used
with the IN2000 / IN2001, the interface does not strip the sync off of the green, and the
resulting output signal is actually RGsBS. The problem can be solved by disconnecting the
composite sync signal from the display device, forcing the display to operate in Sync on
Green mode. If the display absolutely must have an RGBS signal, then an IN5104A cable
should be used. The IN5104A will force the IN2000 to strip the sync off of the green and
output a true RGBS signal.
The output image is doubled, with two images displayed side-by-side.
Solution:
The display device may not be compatible with the horizontal scan rate of the computer.
This problem often occurs when a 31.5 KHz VGA signal is sent into an RGB monitor which
is only compatible with signals at 15.75 KHz.
If problems persist, call INLINE Technical Services at (800) 882-7117 for further assistance.