FSR
MDC – MK1 Operations Manual [
Page 14 of 28
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SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE
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Normal beeps indicate that a feature or value has been changed.
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High-tone beeps indicate that something has been written to the unit's Non-Volatile Memory for
example when doing a Store Settings, Factory Reset, AutoSet, or when a new screen resolution /
refresh rate combination has been detected.
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Press the - button to turn the sound off, the + button to turn it on again.
Sync In – from “Computer In” connector
The Magellan MDC - MK1 does not need to have separate Horizontal and Vertical sync inputs
provided by the computer, it can also accept composite sync signals, or sync-on-green (see next
option). This ensures compatibility with as many different types of computers as possible.
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If your computer outputs a composite sync signal, it is necessary to switch the Magellan MDC -
MK1 to accept it, as the default is to accept separate horizontal and vertical sync only.
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A composite sync signal can be fed into the unit in 3 different ways, corresponding to one of the
options listed in the table below.
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Press the + button to cycle forward through the options, and the - button to go back.
Sync – In Option
Description
VGA H & V
Positive or negative horizontal sync on pin 13.
Positive or negative vertical sync on pin 14.
Green + Sync
Negative composite sync present on green.
Pin 13
Negative composite sync on pin 13.
Pin 15
Negative composite sync on pin 15.
C Sync in Freq. - composite sync input frequency
When using a composite sync signal on the Computer In connection (either separate, or on the green
signal), you may need to adjust this setting to suit the scanning rate.
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The default of 70 should suit frequencies around 55 Hz.
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Reduce it to around 50 for 75 Hz inputs.
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Reduce it below 50 to suit even higher frequencies.
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Note that it is the horizontal scanning frequency that is important - not the vertical frequency.
(Multiply the vertical frequency by the number of lines in the picture to give a guide to the
horizontal frequency.)
