Page 6 of 9 DTB-AV user manual issue 1.1
Rear Signal Connections
The signal connections to the cards are made through a range of rear modules. The Desk Top Box will
be supplied with an appropriate selection of these for the cards installed in it. Unused slots will be fitted
with blanking plates. Details of signal types and pin-outs are given the documentation supplied with
each Crystal Vision video or audio card.
The rear modules are held in place by a retaining bar at each side. These run the height of the Desk Top
Box and provide mechanical support as well as ensuring EMC compliance.
It is possible to move, add, or change the rear modules if new or different cards are to be used in the
Desk Top Box. This should be done as follows: -
1.
Disconnect all the mains power leads from the Desk Top Box.
2.
Identify the rear modules or blanking plates to be removed. Using a cross-head screwdriver undo
the two screws on the retaining bar on each side of these module(s). Remove the retaining bars.
3.
Pull the rear module(s) straight off the rear of the Desk Top Box.
4.
Check that the rear modules that will be fitted to the Desk Top Box have the relevant labels
properly attached using the retaining pins.
5.
Fit the new modules by pushing them straight on to the connectors.
6.
Hold any blanking plates in place while the retaining bars are refitted. Ensure that both screws on
each retaining bar are fully tightened to maintain mechanical integrity and EMC compliance.
7.
To maintain product safety and EMC compliance the rear of the Desk Top Box should be filled
with Crystal Vision connector units and blanking plates before power is reapplied.
Slot Numbers
The diagram below shows the positions of the slots in the Desk Top Box when viewed from the front.
Signal Card Slot Numbers
1
2
Remote Control via Statesman
The 26way high desity D-type connectors on the rear of the Desk Top Box contain an RS422 serial
comms signal which connects to a comms port PC via a cable and RS422 to RS232 converter.
The PC would have the STATESMAN software installed on it.
Note suitable RS422 to RS232 converter can be supplied by Crystal Vision Ltd or by B & B
electronics ( model number 422PP9R )
The following tables should be used together with the card documentation to determine the signal
connections. To maintain EMC compliance only good quality screened cable assemblies should be
used.
Getting Started
Ensure the system is correctly installed.
On power up the Control Panel will display the following
a.
The words ‘Crystal Vision’ and all the 8 LEDs will light up
b.
The software version number
c.
The words ‘Control Panel’ then all 8 LEDs will unlight
d.
The following message is then seen ( software version 1.5.0 or higher )
