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SUMMARY OF DO-160C  

Summary of DO-160C Environmental Testing for Technisonic Model A790 Loud Hailer Controller: 
 

CONDITIONS SECTION  DESCRIPTION OF CONDUCTED TESTS 

Temperature and Altitude 

4.0 

Equipment tested to categories C4 and D1. 

Vibration 

8.0 

Equipment is tested without shock mounts to categories 
B, M and N. 

Magnetic Effect 

15.0 

Equipment is class Z. 

Power Input 

16.0 

Equipment tested to category B. 

Voltage Spike 

17.0 

Equipment tested to category B. 

RF Emission 

21.0 

Equipment tested to category Z. 

 
 
 

INSTALLATION APPROVAL NOTE 

Presently, no TSO standard exists for airborne loud hailer equipment. To make it easier for 
installation agencies to provide their customers with an approved installation supported by an 
effective Airworthiness Approval, Technisonic has secured Supplemental Type Certificate (STC) 
Approvals (both US and Canadian) on its Airborne products for many helicopters currently being 
delivered in the US and Canada, as well as a number of single engine fixed wing aircraft. The above 
referenced DO-160C test data is also on file and available from Technisonic to support approval 
requirements in airframes for which Technisonic does not possess an STC. 
 
Approved aircraft types are listed in the attachments to the formal STC documents. These STCs are 
the exclusive property of Technisonic and require the written authority of Technisonic for their use. 
To assist Factory Authorized Technisonic Dealers in the certification process, we have placed 
copies of our Canadian and US STCs on our web site along with a letter of authorization for their 
use. These documents may be downloaded and used as support for the technical submission to 
FAA or Transport Canada. Only factory authorized dealers/installers are permitted to download and 
make use of these documents on behalf of their customers (end users) in support of regulatory 
agency approval. Please refer to the Technisonic web site www.til.ca for the latest issue of 
available STCs and letter of authorization for use. 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

Summary of Contents for A790

Page 1: ...ructions TiL Document No 09RE409 Revision D MARCH 2012 Technisonic Industries Limited 240 Traders Boulevard Mississauga Ontario L4Z 1W7 Tel 905 890 2113 Fax 905 890 5338 www til ca Copyright by Technisonic Industries Limited All rights reserved ...

Page 2: ......

Page 3: ...itle page changed to reflect new document format layout Correct other typos as found in TOC and Section 2 B Added edited by column in this page 2 4 ADDED configuration mode into section 2 Para 2 4 re sequenced as paragraph 2 5 28 Oct 2010 FM C 1 1 Para 1 2 Power Sonix AIR42 model number added in Rev A above should be PSAir22 not PSAIR42 D Sect 2 Para 2 4 moved to Sect 3 Sect 3 updated description ...

Page 4: ...ii This page left intentionally blank ...

Page 5: ...ications not expressly approved by Technisonic Industries could void the user s authority to operate the equipment WARRANTY INFORMATION The Model A790 is under warranty for one year from date of purchase Failed units caused by defective parts or workmanship should be returned to Technisonic Industries Limited 240 Traders Boulevard Mississauga Ontario L4Z 1W7 Tel 905 890 2113 Fax 905 890 5338 ...

Page 6: ...ntly being delivered in the US and Canada as well as a number of single engine fixed wing aircraft The above referenced DO 160C test data is also on file and available from Technisonic to support approval requirements in airframes for which Technisonic does not possess an STC Approved aircraft types are listed in the attachments to the formal STC documents These STCs are the exclusive property of ...

Page 7: ...3 OPERATION 2 3 SECTION 3 CONFIGURATION OPTIONS 3 1 INTRODUCTION 3 1 3 2 CONFIGURATION MODE OPERATION 3 1 3 2 1 SIREN Select the Backlight Voltage 3 1 3 2 2 TRILL Select the Amplifier Test 3 1 3 2 3 PLAY Set the Side tone Level 3 1 3 2 4 PA Select the wav File Loader 3 2 3 2 5 REC Exit Configuration Mode 3 2 LIST OF FIGURES FIGURE TITLE PAGE 2 1 A790 Operator s Controls and Indicators 2 1 2 2 Spec...

Page 8: ...TECHNISONIC INDUSTRIES LIMITED www til ca A790 Operating Instructions TiL 09RE409 Rev D vi This page left intentionally blank ...

Page 9: ...A790 is designed to work in conjunction with a high power public address system such as the Power Sonics Model PSAIR22 1 3 PURPOSE OF EQUIPMENT The A790 Loud Hailer Controller is designed to control an airborne public address system adding features such as pre recorded sounds and messages 1 4 MODEL VARIATION There is only one version of the Model A790 P N 081250 1 All units support both 5 and 28 v...

Page 10: ...dBm nominal Audio output 2 1vrms 8 7dBm max 600Ω Physical Dimensions Approx 5 6 X 1 125 X 5 75 Weight Approx 13 4 oz 375 g Mounting Panel Mount via Dzus fasteners Operating Temperature Range 30 C to 70 C Power Requirement Voltage Current 28 0 VDC 15 500 mA max Back Lighting 28 Volts or 5 Volts 2mA max Display Colour NVG Compatible Green TABLE 1 1 Model A790 General Characteristics ...

Page 11: ...tallation 1 The user can use the PA system directly with the headset mic 2 A message can be pre recorded in the A790 to be played over the PA system 3 A siren or a trill sound can be played through the PA 4 An auxiliary input jack allows for an input from an external source such as an MP3 player to be routed to the PA system or to the A790 message recorder FIGURE 2 1 A790 Operator s Controls and I...

Page 12: ...ion 1 Special FIGURE 2 3 Configuration 2 Standard 2 2 1 MIC ROTARY SWITCH The MIC rotary switch has 3 positions RADIO The radio position is only used in special configuration 1 and allows the user to operate radios and equipment through the aircraft audio panel PA Switching to the PA setting connects the mic and the PTT line to control the PA system This is the normal position of this switch when ...

Page 13: ...ile this function is activated 2 2 7 REC Pressing this button once arms the message recorder causing the button to blink If the button is pressed again within 4 seconds audio from the auxiliary input will be recorded until the REC button is pressed a final time 2 2 8 ON OFF VOL The volume knob adjusts the volume level of the audio going to the PA system only and does not affect the sidetone level ...

Page 14: ...YING AN EXTERNAL AUDIO SOURCE THROUGH THE PA Plug the external audio source MP3 Player Cell Phone Etc into the 1 8 jack on the A790 The input will accept either a mono or stereo plug Press the PA button Start the audio source Adjust volume as necessary Press the PA button again when finished 2 3 6 RECORDING A MESSAGE FROM AN EXTERNAL SOURCE Plug the external audio source into the 1 8 jack on the A...

Page 15: ...d in the following sections 3 2 1 SIREN Select the Backlight Voltage The MIC rotary switch has 3 positions Pressing the SIREN button will toggle the configuration of the A790 backlight system to work with either 28 VDC or 5 VAC systems The button is lit to indicate 28V configuration and unlit to indicate 5V configuration Factory default is 28V 3 2 2 TRILL Select the Amplifier Test Pressing the TRI...

Page 16: ...unctions of the wave file loader are controlled via an externally connected computer No harm will occur if you accidentally invoke this function to exit this feature simply power off the unit and start again The button is lit when the wav file loader is running 3 2 5 REC Exit Configuration Mode Pressing the REC button will exit the configuration mode NOTE If you configured Amp Test Enabled it will...

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