Trilogy Touch Technology Trilogy Commander Digital Intercom 9 - Manual (Page 63)

Commander Installation Guide
Trilogy Communications Limited Page 63 of 81
Issue 9
8.3.2 INSTALLING AN ARCHIPEL DOWNLOAD CARD IN A P.C.
The Archipel card is a proprietary, half-length ISA bus adaptor card that allows data to be
converted into the 20Mbit/s serial data link used by Commander.
If Trilogy Communications has supplied a P.C., an Archipel download card will have been
pre-installed. Otherwise, install the card in accordance with the instructions provided with
your PC. The card is not “Plug and Play” and will not show in the Windows 95 system
dialogue found under Control Panel. Conflicts with other devices will cause the Archipel card
to fail to connect to the matrix. This will first become apparent during the system “download”
operation. If the card is fitted correctly and all cables are connected, check for system
conflicts with CD-ROM drives, sound cards and network cards.
In the configuration used with the Commander system, the Archipel card is not interrupt
driven: it operates by writing to specified memory blocks. The base memory address is set
on switch IN3: the default is150. Other options are shown in the diagram below. Any change
to the hardware settings needs to be matched in the PathFinder software “settings” dialogue.
See Section 3.3 for details.
The card has a number of jumper link settings and short ribbon cable assemblies that must
be set and connected correctly. The card is illustrated below.
NOTE: Max download cable length is 20 metres using RS422 screened cable.
The connections given below are for the Desktop PC link. Cable is twin twisted pair, with
overall screen.
PC D37
Fixed Socket
Pin Commander D9
Fixed Plug
Pin
Notes
2, 20 4, 8 (+,-) Pair 1. From PC (+,-)
5, 23 5, 9 (+,-) Pair 2. To PC (+,-)
(21) 3 Cable screen - not connected at PC.
In some installations, communications problems have arisen from the PC and Commander
not having a common earth reference. It is important to ensure that both the PC and
Commander system have proper earth connections, or at least that the PC and Commander
earths are connected together. Sometimes connecting the cable screen at the PC end of the
cable can solve the problem.