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Guardian Telecom Inc. 

 

Installation and Operation 

Model AS12 

 

Page 3 

 

 

 

Overview 

Automatic Amplifier Switch 

The AS12 Automatic Amplifier Switch continuously monitors the outputs of paging amplifiers to 
detect failures.  If it detects a problem it will switch the defective amplifier out of the circuit and 
activate the standby amplifier.  The appliance is capable of simultaneously monitoring four amplifiers 
plus a standby, and provides visual indication of amplifier status. 

As part of an integrated industrial emergency/communications system, the AS12 ensures 
uninterrupted communication in the event of an amplifier failure. 

The AS12 Automatic Amplifier Switch is one component in Guardian Telecom's full line of paging 
system products, which also includes alarm tone generators and distribution amplifiers. 

 

Features 

  Simultaneously monitors up to four paging amplifiers and one standby amplifier 

  Instantly detects and indicates amplifier failure 

  Automatically transfers output from a failed amplifier to the standby amplifier 

  Visually indicates amplifier status 

  Maintains historical visual indicators 

  Automatically resets amplifiers to normal when a fault is corrected 

 

Содержание AS12

Страница 1: ...e Automatic Amplifier Switch Model AS12 Installation and Operation VOX THRESHOLD ADJUSTMENT AMP 1 AMP 2 AMP 3 AMP 4 STAND BY AS 12 AMPLIFIER SWITCH RESET Guardian Telecom Inc P005093 Rev C 070518 7 21...

Страница 2: ...mer 10 Warning 10 Service Telephone Number 10 Feedback 10 Guardian Product Return 11 Table of Figures Figure 1 Dimensions 4 Figure 2 Front Panel 4 Figure 3 Rear Panel 5 Figure 4 Block Diagram 6 Figure...

Страница 3: ...integrated industrial emergency communications system the AS12 ensures uninterrupted communication in the event of an amplifier failure The AS12 Automatic Amplifier Switch is one component in Guardia...

Страница 4: ...r LED See below 3 Fault History Reset Button 4 VOX Threshold Adjustments 5 Backup Threshold Adjustment 6 Backup Amplifier Status Indicator LED See below There are two Status Indicators The top one ind...

Страница 5: ...MP 4 FROM BACKUP AMP 1 2 3 4 5 C 1 2 3 4 5 C 220 VAC FUSE 1 A POWER CHANNEL 1 CHANNEL 2 CHANNEL 3 CHANNEL 4 1 2 3 9 8 4 Figure 3 Rear Panel 1 Power ON OFF Switch 2 Fuse 1 Amp 3 Power input for 120 230...

Страница 6: ...CHANNEL AUDIO OUTPUTS LOGIC INPUTS CHANNEL PRE AMP ACTIVE ALLOCATOR BACKUP CHANNEL DETECTOR FAIL CHANNEL CONTROL UNIT CH SB CH 4 CH 3 CH 2 CH 1 CH 4 CH 3 CH 2 CH 1 Figure 4 Block Diagram DA388 MIC 1...

Страница 7: ...connected to the AS12 are turned off Follow all appropriate electrical codes for the installation Use the following sequence when wiring connections o Audio Inputs See Connection Details below o Cont...

Страница 8: ...fails the standby amplifier will also fail Multiple Amplifier Failure If more than one amplifier fails at the same time the standby amplifier will only replace the highest priority the lowest numbered...

Страница 9: ...Inputs 5V TTL LEVEL RECOMMENDED ACTIVATING DEVICES DRY CONTACT RELAY MINIMUM OPEN COLLECTOR OPEN DRAIN CURRENT CAPACITY 100mA Logic Outputs 4 Logic Open Drain Outputs OUTPUT SWITCH CURRENT CAPACITY 4...

Страница 10: ...rnal components the only maintenance possible is the replacement of the fuse which is available from the back panel Service Telephone Number 1 800 363 8010 Guardian Telecom provides a customer service...

Страница 11: ...ng the service telephone number given in this manual After providing information on the product the owner and the nature of the problem Guardian will issue a RMA number to be shown on documentation re...

Страница 12: ...Calgary Alberta Canada T2E 8W1 Toll free 1 800 363 8010 Ph 403 258 3100 Fax 403 253 4967 www guardiantelecom com E mail mailto sales guardiantelecom com Click to open message box Industrial Communicat...

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