Operation. ASL INTERCOM SMC02G

SMC02G/SMC02F/Variants - Product Manual

2 Operation

2.1 Control and Indicators

Figure 1 SMC02 Front Panel

SMC02G/SMC02GS

1 2

3 4 5

01 06 11

13

12 11

05

10 9

2 3 4

SMC02F/SMC02FS

13

20

5

10

1

12

11

01 06 11

05

9

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6

7

8

6

7

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SMC02G/SMC02F/Variants - Product Manual

1 Microphone

• SMC02G and SMC02GS:

Gooseneck microphone

• SMC02F and SMC02FS:

Fist microphone with integral Push To Talk button

2 SPEECH LEVEL METER

A LED bargraph speech level meter where the LEDs light in turn to indicate the sound pressure being received at the microphone. This meter is annotated to indicate the correct speaking level. The meter operates continuously, to allow the operator to ‘practice’ achieving the correct level before making a broadcast.

3 PA LISTEN-IN VOLUME SWITCH

This switch controls the volume of the listen-in audio from the microphone’s listen-in speaker.

4 PA LISTEN-IN LED (green)

Illuminates while the listen-in mode is active.

Note that normal paging is not possible while listen-in is active.

PA LISTEN-IN LED SWITCH

Pressing this switch once will activate the listen-in function, such that all active audio from all zones in the system is mixed and output from the microphone’s listen-in speaker.

Pressing this switch while holding down a zone select button will cause only that zone to be fed to the listen-in speaker. Pressing subsequent zone buttons will add their audio to the mix. Repressing buttons will de-select their zones from the mix.

Pressing the listen-in switch a second time will cancel the listen-in function.

5 BUSY LED (red)

One BUSY indicator LED is located adjacent to each of the ZONE SELECT BUTTTONS, and when lit they indicates that the zone (or one or more of the group of zones) addressed by the button is already in use by another input. This microphone can only select the zone if the other input is of a lower priority.

If a higher priority input selects a zone during a paging announcement from the SMC02, then the zone will be deselected for the SMC02, and the BUSY LED will illuminate. The announcement will however continue to any other zones if the SMC02 is broadcasting to a group of zones.

6 SELECT LED (green)

One SELECT indicator LED is located adjacent to each of the ZONE SELECT BUTTTONS, and when lit they indicate that the zone (or one or more of the group of zones) controlled by that button has been successfully selected, and is ready for use by the Microphone.

When a ZONE SELECT BUTTTON is initially pressed to select a zone the SELECT LED will flash.

Once the Press to Talk (PTT) button is pressed and a broadcast is being made, then the

SELECT LED will stop flashing and will be steadily lit (as long as a higher priority input has not selected the same zone).

If a higher priority input selects a zone during a paging announcement from the SMC02, then the zone will be deselected from the SMC02 and the SELECT LED will go out. The announcement will continue to any other zones if the SMC02 addresses a group of zones.

7 ZONE SELECT BUTTON

Selects which zone(s) will receive the paging announcement from this microphone unit. If pressed a second time, the zone (or group of zones) will be de-selected.

Each Zone Select button can be configured to control a single zone, a group of zones, or all zones.

Issue: 02 complete, approved

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SMC02G/SMC02F/Variants - Product Manual

8 ZONE IDENTIFICATION LABEL

This label carries the name or description of the zone (or group of zones) which is selected by the adjacent Zone Select button.

A template for printing these labels is available from the “Data Downloads” page of Application

Solutions website: www.asl-electronics.co.uk/downloads.

9 SPEAK NOW LED (green)

When the Press To Talk (PTT) button is pressed, and the chime (if programmed at the Router) has finished, then these LEDs are lit to indicate that the announcement can now be made by speaking into the microphone.

10 PUSH TO TALK BUTTON

The Press To Talk (PTT) button is integral to the fist microphone on SMC02F units, and fitted onto the microphone console on SMC02G units.

When pressed, it activates the zone selection, opens the microphone channel and triggers the pre-announcement chime (if selected at the Router) ready for the paging announcement. When released, the microphone channel is closed and the zone selections cancelled.

11 ALL CALL ONLY LED (yellow)

These LEDs illuminate if a processor or communication failure occurs with the standard SMC02 units. Pressing the Press to Talk (PTT) button in this mode causes a broadcast to all zones, via the Router’s hardware bypass.

This LED and emergency bypass function are not functional on ‘S’ variant paging microphones

(SMC02GS and SMC02FS).

12 SYSTEM FAULT LED (yellow)

Illuminates if any fault is present on the PA/VA system.

Note that this does not indicate that the SMC02 is not working. A fault may be present with a fully operational system, for example, if an amplifier has failed but has been automatically replaced by a standby amplifier.

13 POWER LED (green)

Illuminates to indicate that unit is receiving DC power.

Issue: 02 complete, approved

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