Pioneer 502MX technical manual Combination Connection, Connections, Combination in terminal

Combination Connection

5.6 Combination Connection

This is useful for controlling/adjusting a number of sets from a single PC.

By carrying out combination connection and then assigning IDs to each of the sets, it becomes possible to control/ adjust a number of sets either all at once or individually.

5.6.1 Connections

Carry out connections as shown below. You can then control/adjust the units from the PC.

1st unit 2nd unit 3rd unit

PC	IN	OUT	IN OUT
	CONBINATION		CONTROL

OUT

	IN	OUT	IN OUT	IN	OUT	IN OUT
RS -	232C			RS - 232C		RS - 232C
	CONBINATION		CONTROL	CONBINATION		CONTROL

IN	OUT	IN
	Combination cable

Combination cable

NOTE

You may use either combination input or control port RS-232C connector, but not both at once. Using both simultaneously will result in malfunction or system breakdown.

Don't connect combination inputs to other combination inputs, or combination outputs to other combination outputs. It may cause a trouble.

General purpose Mini Din 6-pin (straight) cables may be used as combination cables.

The connections for remote control signals are as shown below.

•The order of precedence for remote control signals is as follows:

1 Control IN terminal (SR IN) > 2 Combination IN terminal > 3 Remote control infra-red receiver

Example: If you connect a cable to the Control IN terminal (SR IN) then the built-in Control IN terminal (SR IN) switch makes it impossible to receive remote control signals via either the remote control infra-red receiver (??) or

the Combination IN terminal.

(NOTE) RS-232C signals can still be received via the Combination IN terminal.

Remote control signal

block diagram

3Remote control infra-red receiver

To the PDP’s built-in

microcomputer

OPEN when ID has not been set (see NOTE 1)

2 Combination	1 Control IN	Control OUT	Combination
IN terminal	terminal	terminal	OUT terminal
	(SR IN)	(SR OUT)

NOTE 1) In order to output remote control signals or RS-232C signals from the Combination OUT terminal, it is necessary to assign an ID. For more details see “5.5.3 ID Assignment”.

NOTE 2) With the Combination IN/OUT terminals, remote control signals and RS-232C signals are inputted/outputted simultaneously. For more details see “2.3 Controls and Connectors”.

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