Manual Switch; Color Switch - NEC Multisync Plus JC-1501VMA Service Manual

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MANUAL SWITCH
This switch selects either the IBM mode when OFF or the manual mode when
ON. When this switch is OFF, MultiSync PLUS automatically works in the IBM
mode and adjusts itself to the scanning frequency, resolution and color require-
ments of the IBM compatible graphics adapter being used.
When this switch is ON, the user must manually select the number of colors
(8/16/64) needed by the graphics adapter being used with the COLOR SWITCH
(see No.8 below). Refer to instructions accompanying the graphics adapter be-
ing used for information on how many colors the adapter can display.
8
COLOR SWITCH
The three color configurations (8/16/64 colors) necessary when using non-IBM
compatible graphics adapters can be set using the color switch as shown below.
Refer to instructions accompanying the graphics adapter being used for infor-
mation on how many colors the adapter can display.
COLOR MODE
COLOR
SWITCH
8
colors
8
16 colors
16
64 colors
64
NOTE
This switch should be set correctly in relation to the input signal of the graphics
adapter being used. Refer to instructions accompanying the graphics adapter
for information on the input signal and refer to No . • below.
8
TTL/ANALOG SWITCH
Used to select an input video signal-either TTL or ANALOG-of the graphics
adapter. It is important to determine whether the input signal of the graphics adap-
ter being used is ANALOG or TTL prior to connecting the adapter with your the
MultiSync PLUS. Refer to instructions accompanying the graphics adapter for
information on the input signal.
o
BNC INPUT VOLTAGE SWITCH
Used to select an input video voltage-either 1.0Vp-p or O.7Vp-p-of the graph-
ics adapter. Refer to instructions accompanying the graphics adapter for infor-
mation on the input video voltage.
-8-

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