III. Installation
A.
Initial Configuration
The unit as configured from the factory is set to accept 100 to 240 Volts A.C. 50 - 60 Hertz
electrical power. No changes are necessary to change voltage selection.
B.
Location and Hookup Considerations
Locate the 8/16 in a 19-inch E.I.A. standard rack enclosure in close proximity to the equipment
that it is going to interface between. Allow sufficient airflow space between equipment to allow for
proper cooling. Make all desired input and output connections to your external equipment using
the pin out provided for the DB25 connectors. Optional DB25 to XLR breakout panels are
available from bdi. The audio connector pin assignments which can be found in the schematics
section of this manual conform to the Tascam A-DAT™ format. This is a commonly used
worldwide standard for which cable assemblies are available from multiple sources including BDI.
Call us for more information about availability and pricing.
Always make sure that the 8/16 is plugged in to a properly grounded A.C. receptacle. A common
practice to break ground loops is to isolate the chassis from electrical ground. THIS IS NOT
RECOMMENDED AND WILL VOID THE WARRANTY IF DONE IN THE FIELD. An alternate
method to break ground loops is to break the signal grounds on one side of the equipment.
C.
Remote Control/Status Connection
Refer to the table on the following page for remote control and status connections. The 8/16
requires a momentary ground closure for switching operation in its factory default mode. The 8/16
can accept an open collector output for this purpose or a simple relay closure will actuate a
switching function. Status provided is a set of dry contacts offering NO/C/NC connection to
remote control equipment.
D. Optional User Features
i. Maintained Switch Closure Operation Instructions:
The 8/16 Switcher can be configured to require a maintained remote closure to hold the B
position. In this configuration a maintained remote control closure is necessary to keep the
switcher in the B position. To place the 8/16 in this mode connect pin 8 of J2 Remote
Control/Status connector to common such as pin 17. To command the 8/16 into the B position
connect a switch closure from J2 Remote Control/Status connector pin 9 to common such as pin
18. As long as the connection between pin 9 and to any of the common pins 17-20 the unit will
remain in the B position. To command to the A position the connection between pin 9 and
common is broken.
ii. Power Loss Memory
When the 8/16 is configured for momentary closure to command from A to B or B to A input
(factory default), the 8/16 can be configured to default to the last channel selected upon power up
or can be configured to default to the A position upon power up. Factory default is for the 8/16 to
remember last channel selected upon power up. If it is desired for the unit to always default to
position A upon power up remove the top cover and locate JP3 on the main PC board. The
jumper should be installed connecting the two pins together. Check the operation of the unit after
installing the jumper and then replace the top cover.
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