Redback A 1741b User manual

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Redback® A 1741B Message Player

Operating Manual

A 1741B Message Player

The A 1741B is an MP3 based message player and tone generator designed for public address, security, customer direction

or emergency evacuation announcements.

1.0 INSTALLATION

Power requirements: The A 1741B requires a minimum of 12VDC at 300mA to work correctly with a maximum work-

ing voltage of 30VDC. Do not exceed 30VDC as it will cause permanent damage to the unit. A good working voltage is

between 12VDC and 24VDC. The power is connected via the 2.1mm (tip positive) DC socket on the rear of the unit (see

g 1).

Output: Output is via the stereo RCA connectors on the rear. Output level is nominal 500mV but is related to the recorded

level of the MP3.

Input triggers: The input triggers are activated by closing contacts on the rear of the unit whether by a normally open

switch or a timer or controller. (Note: These triggers have a common ground).

Trigger Switches: The messages can also be activated by pressing the switches on the front of the unit. Note: The Alert

and Evac buttons must be held down for 3 seconds before they activate. This reduces the chance of accidental triggering.

Switched output: The switched output terminal is triggered when any zone is activated. The voltage is the same as the

power supplied to the unit. ie if the A 1741B is powered by 12V, the switched output voltage will be 12V.

2.0 PLAY MODES

Alternate: When the A 1741B is in Alternate mode (DIP1 switch1 OFF) (see Fig 3) the closing contact must be held for the

duration of the MP3 play time, if it is released before the MP3 ends the MP3 will stop playing immediately. If the contact is

held closed continually the MP3 will continue to loop over and over until the contact is released.

Momentary: In Momentary mode (DIP1 switch1 ON) (see Fig 3) a momentary closing contact or pulse on the trigger pins

will activate the MP3. The A 1741B will continue to play the MP3 till it nishes and will stop playing and wait for another

trigger activation.

To stop an MP3 playing when in Momentary mode the Cancel trigger or Cancel switch is used. A momentary closing

contact on the Cancel trigger or closure of the Cancel switch will stop the MP3 playing (it is recommended that the Cancel

contact or switch be held up to 2 seconds to ensure the MP3 stops playing)

User manual revision number 1.0 26/11/2019

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Redback® A 1741B Message Player

Timer

Message Player

A 1741B

Standby

1 2 3 4 5 6 7 8 Alert Evac

Message Active

Micro SD Card

Cancel Fault

16GB Maximum Hold down the Alert or Evac button for 3 seconds to activate

Switches

Disabled

71 2 3 4 5 6

3.0 FRONT PANEL CONNECTIONS

Fig 1

1 Switches Disabled Indicator

This LED illuminates when the front switches are set to be disabled via the DIP switches on the rear of the unit.

(See Fig 2 for DIP Switch location).

2 Micro SD card slot

The Micro SD card which has the messages (in MP3 format) to be played is inserted here. The Micro SD card can

be a maximum of 16GB.

3 Message Active Switches and Indicators

These switches are used to trigger the messages 1-8. The LED’s inside the switches indicate when the

associated message is playing. The messages can also be activated by using the triggers on the rear of the unit.

(See Fig 2 for details.) NOTE : If DIP switch 3 on the rear of the unit is set to “OFF” the front switches will not

operate and the “Switches Disabled” LED will illuminate.

4 Alert and Evac Switches and Indicators

These switches are used to trigger the Alert and Evacuation tones (which conform to AS1670.4). The LED’s inside

the switches indicate when the associated message is playing. The tones can also be activated by using the Alert

and Evac triggers on the rear of the unit. (See Fig 2 for details.) NOTE : If DIP switch 3 on the rear of the unit is set

to “OFF” the front Alert and Evac switches will not operate and the “Switches Disabled” LED willilluminate. The

Alert and Evac tones can also be disabled from the rear triggers by setting DIP switch 2 to the “OFF” position.

(See Fig 2 for details.)

5 Cancel Switch

Use this switch to cancel any MP3 which is playing. (This may need to be held down for 2 seconds to cancel).

The Cancel option can also be activated by using the Cancel trigger on the rear of the unit. (See Fig 2 for

details.) NOTE : If DIP switch 3 on the rear of the unit is set to “OFF” the front Cancel switch will not operate and

the “Switches Disabled” LED will illuminate.

6 Status Led

This LED indicates whether the unit is ON or has a Fault condition. If the LED is “steady blue” the unit is receiving

power. If the LED is “ashing red” then a fault has occured with the unit.

7 Standby Switch

When the unit is in standby mode this switch will illuminate. Press this button to switch the unit ON. Once the

unit is ON the On indicator will illuminate. Press this switch again to put the unit back in standby mode.

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Redback® A 1741B Message Player

4.0 REAR PANEL CONNECTIONS

Fig 2

1 DC Input

Power is supplied to the unit via a 2.1mm (tip to positive) DC socket. The input voltage must be between

12-30V DC.

2 RCA Stereo Line Output

Connect these outputs to the output amplier. Output level is nominal 500mV but is related to the recorded

level of the MP3.

3 Pluggable 12-30VDC switched output

Connects via Euroblock screw terminals. Please observe correct polarity when connecting.

The switched output terminal is triggered when any message or tone is activated. The output voltage is the

same as the power supplied to the unit. ie if the A 1741B is powered by 12V DC, the switched output voltage

will be 12V DC.

4 Cancel Trigger

The cancel trigger is activated by closing contacts on the rear of the unit whether by a normally open switch

or a timer or controller. The trigger can be set to Momentary or Alternate triggering. See DIP SW settings.

5 Alert and Evac Triggers

The Alert and Evac triggers are activated by closing contacts on the rear of the unit whether by a normally

open switch or a timer or controller. The triggers can be set to Momentary or Alternate triggering. See DIP SW

settings. (Note: These triggers have a common ground).

6 Message 1-8 Triggers

The message triggers are activated by closing contacts on the rear of the unit whether by a normally

open switch or a timer or controller. The triggers can be set to Momentary or Alternate triggering. See DIP SW

settings. (Note: These triggers have a common ground).

7 DIP Switches

These DIP switches are used to:

Set the triggers as either momentary or alternate action. (Refer to Fig 3)

Set the Alert and Evacuation tones to either “ON” or “OFF”. (Refer to Fig 3)

Disable or Enable the front switches for use. (Refer to Fig 3)

Set the delay between the Alert and Evacuation tones. (Refer to Fig 4)

8 Expansion Port

Not currently used.

1 2 65

Line Out

12-30V DC

Switched

Out

12-30V DC

1 2 3 4 5 6 7 8

3567

Evac

Cancel

DIP Switch Settings

ON OFF

1Triggers momentaryTriggers alternate

2Alert/Evac ON

Not Used

TRIGGER OPERATION & ALERT/EVAC SETTINGS

DIP Switches

Alert

Triggers

Contacts

Trigger

50101010101010101

60011001100110011

70000111100001111

80000000011111111

Delay

(Sec.)

OFF

120

150

180

210

240

270

300

330

360

390

420

450

AUTO ALERT TO EVAC SWITCHOVER TIMER SETTINGS. 0 = OFF. 1 = ON.SW

3Front switches active Front switches de-activated

Alert/Evac OFF

–

1 2 3 4 5 6 7 8

www.altronics.com.au

Manufactured in Australia By

Altronic Distributors Pty. Ltd.

Expansion

Port

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Redback® A 1741B Message Player

5.0 DIP SWITCH SETTINGS

(DIP SW 1) Momentary or Alternate triggering

Alternate: When the A 1741B is in Alternate mode (DIP switch1 ON) the closing contact must be held for the duration of

the MP3 play time, if it is released before the MP3 ends the MP3 will stop playing immediately. If the contact is held closed

continually the MP3 will continue to loop over and over until the contact is released.

Momentary: In Momentary mode (DIP switch1 OFF) a momentary closing contact or pulse on the trigger pins will

activate the MP3. The A 1741B will continue to play the MP3 till it nishes and will stop playing and wait for another

trigger activation.

To stop an MP3 playing when in Momentary mode the Cancel trigger or Cancel switch is used. A momentary closing

contact on the Cancel trigger or closure of the Cancel switch will stop the MP3 playing (it is recommended that the

Cancel contact or switch be held up to 2 seconds to ensure the MP3 stops playing).

(DIP SW 2) Alert/Evacuation Tones ON or OFF

When switch 2 is set to “OFF” the Alert and Evac tones cannot be triggered either by the front switches or the rear

terminal contacts. If switch 2 is set to “ON” the Alert and Evac tones can always be triggered via the rear terminal con-

tacts. However the front switch triggering is dictated by DIP Switch 3.

(DIP SW 3) Front Switch Activation

When switch 3 is set to “OFF” the front switches become de-activated from use. When these switches are de-activated

the “Switches Disabled” LED on the front of the unit will illuminate. This function disables all the switches including the

cancel, alert and evac.

(DIP SW 4)

Not currently used

Fig 3

(DIP SW 5-8) Alert/Evacuation Tones change over option

The Alert and evacuation tones conform to Australian Standards AS1670.4 and are used to notify building occupants of

an emergency situation.

The Alert tone comes with a change over option which forces the A 1741B to switch from the Alert to the Evacuation

tone after a prescribed time. DIP switches 5-8 set these change over times from 30 seconds to 450 seconds in 30 second

intervals. If all DIP switches are set to “OFF” the changeover is disabled.

Fig 4

ON OFF

1Triggers momentaryTriggers alternate

2Alert/Evac ON

Not Used

TRIGGER OPERATION & ALERT/EVAC SETTINGS

3Front switches active Front switches de-activated

Alert/Evac OFF

50101010101010101

60011001100110011

70000111100001111

80000000011111111

Delay

(Sec.)

OFF

120

150

180

210

240

270

300

330

360

390

420

450

AUTO ALERT TO EVAC SWITCHOVER TIMER SETTINGS. 0 = OFF. 1 = ON.SW

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Redback® A 1741B Message Player

6.0 PUTTING MP3’S ON TO THE PLAYER

You will rst need to remove power from the A 1741B then remove the SD card from the front of the unit.

To remove the SD card push the card in and it will eject itself.

The SD card will then need to be connected to a PC. You will need a PC equipped with a SD card reader to do this (not

supplied).

Step by step guide to put a MP3 into Trigger1 with a Windows installed PC

Step 1: Make sure the PC is on and card reader connected and correctly installed. Then insert the SD card into the reader.

Step 2: Go to “My Computer” (gure 2) and open the SD card which is usually marked “Removable disk”.

In this case it is named “Removable disk (G:)”

Fig 5

You Should get a window that looks like gure 6.

Fig 6

Open

Removable Disk

Trigger 1 Folder

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Redback® A 1741B Message Player

Step 3: Open folder named “trig1” and you should get a window that looks like gure 7.

Fig 7

Step 4: You should see an MP3 le XXXXXX.MP3 if you have never changed the trigger1 MP3 le then it will be named

Trigger1.MP3.

This MP3 le needs to be deleted and replaced by the MP3 le you want to play when you activate trigger1. The MP3 le

name is not important only that there is one MP3 le in the trig1 folder. Make sure you delete the old MP3!

The folder should look something like gure 8.

Fig 8

Delete this le

and replace it

with a new MP3

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Redback® A 1741B Message Player

NOTE the new MP3 le cannot be “Read only” to check this right click on the MP3 le and scroll down and select Proper-

ties, you will get a window that looks like gure 9. Make sure the “Read Only” box has no tick in it.

Fig 9

The new MP3 is now installed on the card and the card can be removed from the PC following windows safe card removal

procedures. Make sure the A 1741B is OFF and insert the Micro SD card into the slot in the front; it will click when fully

inserted.

The A 1741B is ready to go on Trigger1.

Repeat these steps for Trigger2 to Trigger8 if you need to.

Please note: that the ALERT and EVAC folders and the MP3 les inside these folders should not be deleted or renamed in

anyway as this will cause the A 1741B to stop responding.

Emergency tones (Alert and Evacuation)

The Alert and evacuation tones conform to Australian Standards AS1670.4 and are used to notify building occupants of

an emergency situation.

Alert: The Alert tone is activated by a closing contact on the ALERT trigger or by pressing the Alert button on the front of

the unit and can be used in Alternate or Momentary setup as mentioned in section 2.0 and the Dip Switch settings. The

Alert tone comes with a change over option which forces the A 1741B to switch from Alert to the Evacuation tone after a

prescribed time. Use DIP switches 5-8 to adjust this time or switch off completely (see Fig 4).

Evacuation: The Evacuation tone is activated by a closing contact on the Evac trigger or by pressing the Evac button

on the front of the unit and and can be used in Alternate or Momentary setup as mentioned in section 2.0 and the Dip

Switch settings.

Evacuation message: A message (repeated twice) can be inserted every three evacuation cycles as per the Australian

Standards. Voice message could be something like “please evacuate the building by the closest exit”. To install a Evacu-

ation message on the A 1740 follow the Step by step guide to put a MP3 into Trigger1 with a Windows installed PC but

replace Trigger1 with Voice i.e. put the message into the Voice folder on the SD card and delete any other MP3 le located

in the voice folder.

Priority: The Emergency tones have priority over other triggers (1 to 8) and if activated will stop any other MP3 and acti-

vate the selected emergency tone. Evacuation also has priority over Alert.

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Redback® A 1741B Message Player

7.0 TROUBLESHOOTING

NO Power (Power LED does not illuminate):

Check power supply DC jack is 2.1mm and not 2.5mm size.

Check the power supply voltage is 12-30VDC.

Check the power supply is a DC output, not AC.

Message active 10 LED ashes all the time:

This is an indicator that the Micro SD card is not inserted correctly or is not formatted. Make sure all folders on the Micro

SD card are as per gure 6.

Emergency tones do not work:

Switch DIP switch 2 ON to activate emergency tones.

8.0 FIRMWARE UPDATE

It is possible to update the rmware for this unit by downloading updated versions from www.altronics.com.au or

redbackaudio.com.au.

To perform an update, follow these steps.

1) Download the Zip le from the website.

2) Remove the Micro SD card from the A 1741B and insert it into your PC. (Follow the steps on page 5 to open the Micro

SD card).

3) Extract the contents of the Zip le to the root folder of the Micro SD Card.

4) Rename the extracted .BIN le to update.BIN.

5) Remove the Micro SD card from the PC following windows safe card removal procedures.

6) With the power turned OFF, insert the Micro SD card back into the A 1741B

7) Turn the A 1741B ON. The unit will check the micro SD card and if an update is required the A 1741B will perform the

update automatically.

9.0 SPECIFICATIONS

Power supply: .................................................. 12VDC to 30VDC 300mA (idle/maximum current draw 150mA) tip positive

Output: ................................................................................................................................... Stereo RCA 500mV nominal

MP3 File Format: ..........................................................128kbps, 44.1kHz, 32bit, VBR or CBR, Stereo (even better as mono)

SD card size: .............................................................................................................................................. 256MB to 16GB

Trigger activation: ........................................................................................................................................Closing contact

Switched output: .............................................................................................. 12-30VDC out (supply voltage dependant)

* Specications subject to change without notice.

Distributed by Altronic Distributors Pty. Ltd. Perth. Western Australia.

Phone: 1300 780 999 Fax: 1300 790 999 Internet: www.altronics.com.au

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