The DiamondScan is one of the few VGA-type multisync monitors that has a composite video input, and that made it relatively common for use on the Amiga (although I believe that Mitsubishi no longer makes this model). The official scan rates cover the range from 15.6 kHz to 36 kHz, so the DiamondScan should work with all normal Amiga video modes. User controls are standard knobs and buttons, and there are no digital memory features, so using it with the Amiga means that you have to juggle the monitor's picture location settings along with the Amiga overscan and screen position settings. The DiamondScan works fine with the Amber board (see Boards/A2320 'Amber' Reference).
One feature of the DiamondScan is particularly applicable to the video production uses of the Amiga: the "Composite/RGB Select" (pin 22) on the DB25 input. Connect this pin through a switch to ground, and then a flip of the switch will select composite video or analog RGB display without reaching for the switches on the back of the monitor.
Specifications
� Sync Frequency: 15.6 kHz to 36 kHz Horizontal
����������������� 45 Hz to 90 Hz Vertical
����� Resolution: Maximum 800 x 560 (Rated...normally considered to be an 800x600 monitor.)
Input Connectors
� BNC (Composite Video)
� DB9 (EGA/CGA/Mono TTL) (DB9-to-DB9 cable was included.)
� DB25 (Analog RGB)
Pin-Outs
� DB9: (For TTL 16-Color CGA)
� Pin 1: Ground
� Pin 2: Unused
� Pin 3: Red Video
� Pin 4: Green Video
� Pin 5: Blue Video
� Pin 6: Intensity
� Pin 7: Unused
� Pin 8: Horizontal Sync
� Pin 9: Vertical Sync
� DB9: (For TTL 64-Color EGA)
� Pin 1: Ground
� Pin 2: Secondary Red Video
� Pin 3: Primary Red Video
� Pin 4: Primary Green Video
� Pin 5: Primary Blue Video
� Pin 6: Secondary Green Video/Intensity
� Pin 7: Secondary Blue Video
� Pin 8: Horizontal Sync
� Pin 9: Vertical Sync
� DB9: (For TTL Mono)
� Pin 1: Ground
� Pin 2: Unused
� Pin 3: Unused
� Pin 4: Unused
� Pin 5: Unused
� Pin 6: High Intensity
� Pin 7: Video
� Pin 8: Horizontal Sync
� Pin 9: Vertical Sync
� DB25:
�� Pin 1: Sync Ground
�� Pin 2: Red Video
�� Pin 3: Red Video Ground
�� Pin 4: Green Video
�� Pin 5: Green Video Ground
�� Pin 6: Superimpose Control (YS)
�� Pin 7: Superimpose Ground
�� Pin 8: Video Input Select (AV)
�� Pin 9: Composite Video Input
� Pin 10: Composite Video Ground
� Pin 11: Composite Video Out
� Pin 12: Composite Video Ground
� Pin 13: PGA Mode Control
� Pin 14: Blue Video
� Pin 15: Blue Video Ground
� Pin 16: Horizontal/Composite Sync
� Pin 17: Vertical Sync
� Pin 18: Unused
� Pin 19: Unused
� Pin 20: Unused
� Pin 21: INT (+5V ???)
� Pin 22: Composite/RGB Select (TTL level: Low for RGB, high or
open for composite.)
� Pin 23: Analog/TTL Select (TTL level: Low for TTL, high or open
for analog.)
� Pin 24: Remote (TTL level: Low to disable Mode Switch.)
� Pin 25: Shield Ground