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©1995 - INLINE, INC.
IN2022 OPERATION MANUAL - REV 1.1 12/11/99
MONITOR EMULATION
Using the IN2022 With a Local Monitor
Many computers use sense signals to sense whether a monitor is attached to the video port. If a
monitor is attached, the computer makes the video port active and in the case of Macintosh type
video cards, also sets resolution, horizontal frequency, and vertical refresh rate as appropriate for
the monitor. Using factory default settings, the IN2022 passes all sense pins between the
computer video port and the local monitor attached to the Local Monitor Output, ensuring that
the computer can sense the attached monitor and set itself to an appropriate resolution and scan
rate for that monitor. The Monitor Emulation dip switches must all be set to “0” when using
a local monitor. This allows all sense pins to pass through, ensuring proper operation of
the graphics card and monitor.
Using the IN2022 Without a Local Monitor
The IN2022 design makes it easy to use the interface without a local monitor. Because the Local
Monitor Output port is buffered, there is no need for a termination plug to terminate the video
signals when used without a local monitor.
The IN2022 includes a bank of 10 dip switches on the bottom side of the interface for monitor
emulation, permitting the interface to emulate virtually any type of monitor. By setting these
switches to the appropriate positions, the user may emulate the appropriate sense signals, setting
the video card to the desired frequency, refresh rate and resolution even without a local monitor.
If you are not using a local monitor, locate your workstation type and desired mode in the chart
below (also shown on the bottom of the interface). If you are not sure of the exact mode to select
for your computer, select the mode shown in bold since it is the most common mode. Using the
Inline adjustment tool provided with the interface, carefully set the dip switches to the
appropriate settings. Check the Monitor Emulation chart and the IN2022 dip switch settings
carefully. An improper setting of the emulation dip switches may lead to improper operation
and could even result in severe damage to the computer video port or the monitor. Some modes
listed below may not be supported by certain workstations / graphic cards.
Monitor Emulation Chart
Make / Mode Dip Switch Settings
PC Compatibles
Switch 12345678910
VGA Color (also SVGA, XGA, XGA2)
0100000000
MAC II Type Video Cards
12” RGB Monitor - 512 x 384 / 24.5 KHz
1010000000
13”/14” RGB Monitor - 640 x 480 / 35 KHz
1000000000
15” RGB Monitor - 640 x 870 / 68.9 KHz
0100000000
16” RGB Monitor - 832 x 624 / 49.7 KHz
0000001100
19” RGB Monitor - 1024 x 768 / 60.24 KHz
0000000011
21” RGB Monitor - 1152 x 870 / 68.7 KHz
1110000000
14”/15” Multi Scan Monitor - 640 x 480 or 832 x 624
1000110101
16”/17” Multi Scan Monitor - 640 x 480, 832 x 624 or 1024 x 768
1000010101
20”/21” Multi Scan Monitor - 640x480, 832x624, 1024x768, 1152x870
1000100101
15” Full Page Monochrome Monitor - 640 x 870 / 68.9 KHz
0110000000
Dual Page 21” Monochrome Monitor - 1152 x 870 / 68.7 KHz
0010000000
VGA / SVGA Emulation - 640 x 480 or 800 x 600 / 31.5 KHz or 35.2 KHz 0000110000