360 Systems DigiCart/EX - Manual (Page 20)

8
• 23BInstallation
GPI/O Connector
T RANSPORT C ONTROLS
The PLAY, STOP, RECORD, PAUSE and LOOP remote control inputs are optically isolated from
DigiCart/EX’s circuitry; a common floating return is provided. +12V may be sourced from pin
17, or provided from an external source. Current limiting devices are provided within
DigiCart/EX so that voltage may be applied directly between ground on pin 4, and any of the
transport control inputs.
NOTE: If +12V is sourced from DigiCart/EX, the optical isolators no longer provide isolation.
Refer to the partial schematic of the DigiCart/EX interface circuits in Appendix A.
T RANSPORT L AMPS /T ALLY O UTPUTS
Open-collector outputs are provided for the PLAY, STOP, RECORD, PAUSE and LOOP tally
outputs. An open-collector transistor is used to bring the low side to ground to turn on the
external lamp. A +12V source is available on pin 17 of the remote connector for use with
external lamps. Refer to the partial schematic in Appendix A, Interface Wiring.
Aux Serial Control
An EIA-485 (RS-485) serial port is included on the rear panel. DigiCart/EX supports ES-Bus and
Peripheral Bus protocols, selectable from the Setup menu. All of the functions of DigiCart/EX
can be accessed and controlled via this serial port. EIA-485 is a multi-drop version of the EIA-
422 specification, and is fully compatible.
With properly terminated lines this port can communicate up to 1,000 meters. The connector
pin assignments used on the serial and Remote ports can be found in Appendix A, Interface
Wiring. Specifics of supported protocols can be found in Appendix B, Serial Control Protocols.
Alphanumeric Keyboard
An alphanumeric keyboard may be connected to the keyboard connector on your DigiCart/EX
for controlling the machine and adding names to cuts, directories, Playlists and disks. Available
models include a standard 101-key keyboard, a small footprint mini-keyboard (Model RC-205),
or an infrared-linked mini-keyboard (Model RC-235) available from 360 Systems. Contact 360
Systems for details on these accessories.
The SETUP menu must be set to your choice of the standard 101-key PC-AT style keyboard or
mini-keyboard types.
Network
An RJ-45 connector is provided for connection to the Ethernet Audio network.
D IGITAL A UDIO
The pinout for the digital audio ports will be found in Appendix A, Interface Wiring on page 63.
A NALOG A UDIO
The pinout for the analog audio ports will be found in Appendix A, Interface Wiring on page 63.