360 Systems DigiCart/E - Manual (Page 19)

Installation • • • • 9
See “Set Remote Control” in the Setup menu for machine addressing. The pinout used on the Remote
Control port can be found in Appendix A, Interface Wiring.
GPI/O Connector
T RANSPORT C ONTROLS
The PLAY, STOP, RECORD, PAUSE and LOOP remote control inputs are optically isolated from
DigiCart/E'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/E 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/E, the optical isolators no longer provide isolation. Refer
to the partial schematic of the DigiCart/E interface circuits in,Appendix A, Interface Wiring.
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.
C UE O UTPUT — S ECONDARY
Just as with NAB analog tape carts, cue markers can be recorded to trigger the PLAY buttons on other
machines, or as an "alert" or end-of-message cue. For applications other than broadcast, they may be
used to provide flag codes or a status output for interface with show controllers, automation systems,
or lighting and special effects devices.
An open collector output for the Secondary Cue signal is provided on Pins 18 and 19. This low-level
control is designed to switch a maximum of 28V at 500mA. Refer to the schematic in Appendix A,
Interface Wiring.
Aux Serial Control
An EIA-485 (RS-485) serial port is included on the rear panel. DigiCart/E supports ES-Bus and
Peripheral Bus protocols, selectable from the Setup menu. All of the functions of DigiCart/E 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 over 1,000 meters. The pinout used on the
Remote Control port 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/E 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.