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AdderView GEM Installation and Use Page 35
wish to make use of the DDC (Display Data Channel) capabilities of the AdderView
GEM then you will need to use cables that have the DDC signalling lines connected
(pins 12 and 15 on the 15-way video connector). Not all video cables have these
DDC lines connected.
Keyboard and PS/2 mice - 6 pin mini-DIN male connector to 6 pin mini-DIN male
connector with all lines connected straight through (1-1,2-2 etc.). If the PC has a 5-
pin DIN AT style keyboard connector you will need a PS/2 to AT keyboard adapter
6-pin mini-DIN female to 5-pin DIN male (readily available). For ‘interface powered’
operation without the optional power adapter the cables should be no longer than 5
metres (see section 2.4 for more details). For operation with the power adapter,
cables should be no longer than 30 metres.
RS232 serial mice - these require a special converter to connect the RS232 lines
present on the AdderView GEM mouse ports to the RS232 port on a PC.
Cables should be no longer than 30 metres.
NOTE - There are several common wiring specifications for 6-pin mini-DIN to
9-pin serial adapters. If you have an adapter that has been supplied with a
mouse it may have a completely different internal wiring to that shown above
and may not be compatible with the AdderView