HHB comm CDR-882 user manual Parallel Remote Control Port, Pinout, Electrical characteristics

Remote Control

Remote Control

In some installations, it may be desirable to control the CDR-882 from an external control system of some kind. Two rear panel connectors are provided for this purpose, the Parallel Remote Input and the RS232 Link Input. The Parallel Remote Input provides the main transport commands only, while the RS232 Link Input allows control of virtually every machine function, parameter and setting.

Parallel Remote Control Port

The rear panel Parallel Remote Input permits control of five transport functions, and provides tallies for three functions. The five active commands may be selected from a set of eight, and the three active tallies from a set of five. These are shown in the table below.

INPUTS	Default	OUTPUTS	Default
(COMMANDS)		(TALLIES)
PLAY/PAUSE	Input 1	PLAY	Output 7
RECORD	Input 2	PAUSE	Output 8
STOP	Input 3	RECORD	Output 9
AMS +	Input 4	NO DISC	-
AMS -	Input 5	CHANGE OVER	-
FFWD	-
FRWD	-
EJECT	-

The commands and tallies listed in bold are the factory defaults. If a different command set is preferred, an alternative combination comprising any five (or less) of the eight available commands, and any three (or less) of the five available tallies may be reassigned to the inputs and outputs respectively via the menu system. See page 36 for full details of changing the default assignment.

The Parallel Remote Input is suitable for basic control of the CDR-882 from a dedicated set of hardware switches or similar. It is also possible to connect an external control system (e.g. Crestron, AMX) to the Parallel Remote Input, using relays or opto-coupled inputs and outputs within such systems.

Pinout

The connector is a D9F. The pinout is shown in the table:

PIN FUNCTION

1Input 1

2Input 2

3Input 3

4Input 4

5Input 5

60v

7Output 1

8Output 2

9Output 3

Electrical characteristics

Both inputs and outputs are internally opto-isolated, and include a series inductor for EMC purposes.

The inputs simply require a short-to-ground for activation.

The outputs are open-collector, and go low when activated. Loads such as LEDs may be connected externally with a suitable series resistor, and returned to the +ve terminal of an external PSU. The maximum current deliverable by the opto-isolator’s transistor is 50mA. (The –ve side of the external voltage supply should be referenced back to the CDR-882’s 0v on pin 6.)

CDR-882 User Manual Version 1.0 www.hhb.co.uk 49