Mustang M1008/D, M/8M, M2508/D, M100/SD, M250/SD manual Auxiliary Output Connection

MACRO range installation manual. Issue 6

AUXILIARY OUTPUT CONNECTION

A standard 25 way ëDí connector on the amplifier rear provides all the auxiliary connections associated with current sinking, alarms, auxiliary DC and signal outputs, etc., where applicable. The standard connections are as follows:

1250mA current sink activated by input module No.1 during priority access

2 250mA current sink activated by input module No.2 during priority access

3 250mA current sink activated by input module No.3 during priority access

4 250mA current sink activated by input module No.4 during priority access

5 250mA current sink activated by input module No.5 during priority access

6 250mA current sink activated by input module No.6 during priority access

7 250mA current sink activated by input module No.7 during priority access

8 250mA current sink activated by input module No.8 during priority access

9 250mA current sink bus activated by any module gaining priority access

10 250 mA CDM current sink bus activated by any module with this feature

11 0Vforgeneral purpose

12 Nominal 24V+ DC unregulated output, for use with current sinks

13Mains power input failure alarm contacts - normally open

14			DC power input failure
15				Notes:	The current sink connections originate on
16			alarm contacts - normally open	a)
				individual modules. These current sinks are unfused
17			process/equaliser control	and can carry a maximum of 250mA from a positive
18				(+ve) source.
19	nc		for future use.	b)	The pin 12 connection originates from the pre-
20				amplifier stabiliser module (PS.9 etc.) where a F1A
21	nc			fuse is located - see APPENDIX E
22	nc	50V	duplication of	c)	The ëfailí alarm connections are ëopení when
23				the unit is de-energised, and closed during normal
24		0	100V loudspeaker	powered operation.
25		50V	output terminals

Priority controlled DC current sinks

This unusually comprehensive feature is rarely found on general purpose amplifiers but is useful in microphone paging or alarm systems where a number of operations may be required co-incident with the use of the priority facilities, e.g.

a)The introduction of ëpage onlyí 100 Volt loudspeaker circuits by using relays to switch them on only during paging.

b)The restoration to full volume of a remote 100 Volt loudspeaker group volume control, such as the Mustang MVC series.

c)The powering of lamps at a microphone position, to indicate that the amplifier priority system is already in use (by an alarm tone generator for example)

d)The interruption by means of a relay of the sound output of another amplification system.

e)The sending of a low-level paging signal by means of a relay, to another remote amplification system

f)Control of a designated loudspeaker zone control unit from the Mustang ZC or MC ranges.

The principle of operation is that when the signal priority circuit of any of the input modules is activated, the associated DC current sink is operated and the associated terminal of the Auxiliary output connector - becomes a 0 Volt point. This is used to complete a simple external circuit comprising relays or lamps etc., connected to the +24V DC terminal.

Terminals 1-8 are individual sinks controlled individually, whilst terminal 9 is activated whenever ANY of the individual sinks is operated.

The current sinks are polarity protected for use in positive (+ve) applications up to 40V. DO NOT ATTEMPT to pass more than 250mA.

NEVER connect the +24V and current sink connections directly together - serious damage to the module will result. In the off state there is effectively no connection.

See APPENDIX B for typical applications of the Auxiliary Output connections.

Chime duration monitor sinks - (CDM)

This facility is provided on those modules which feature a chime generator. The sink output lasts for the duration of the chime tones (which are triggered on priority access) and the the individual sinks are connected to a sink ëbusí

so that a lamp may be energised on a paging microphone to indicate at which point to commence speaking. This connection is unfused, and is limited to 250mA from a positive (+ve) source. See APPENDIX B for typical application.

100V line output

This is an extension of the rear 100V loudspeaker output barrier terminals to facilitate all connections to be ëpluggableí if required. 24V DC supply

The 24V+ terminal of the Auxiliary output connector provides an unstabilised DC supply, which is limited to 1 amp by an internal fuse on the pre-amplifier stabiliser module (see APPENDIX E) and the return is via the 0V terminal. This feature would normally be used with the DC current sink.

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