Menu
ACR Electronics 2204B Product Support Manual
Also see for 2204: Product support manual
             | |
ACR ELECTRONICS, INC.Product Support ManualPortable Safety MegaphoneY1-03-0340 Rev. C Company Confidential 51. DescriptionThe ACR/EM-1A, ACR/EM-2BA and ACR/EM-1D are battery operated solid state megaphones specificallydeveloped for use in enclosed areas such as in the interior of an aircraft or ship cabin. Each has beendesigned to minimize regenerative acoustic feedback that results in whistling and other oscillations of thisnature. It has a 90° sound projection angle to direct the sound to persons in its immediate vicinity, aswell as in the rear sections of any aircraft. The amplifier frequency band-pass has been selected toproduce a crisp, clear reproduction of voice signals. The operating power level is also sufficient to provideadequate sound under high ambient noise level conditions without being over-powering. Specificattention has been given to the physical size so that it can be used effectively in a crowded environment.The integrated circuit amplifier only uses a small current when turned “ON”. This extends the life of thebatteries so that several hours of operation may be expected when used normally in an intermittentmanner. A simplified block diagram of the megaphone is shown in Figure 1.1.1 Options MatrixThis table shows the various options between the portable safety megaphones.PurchasePartNumberMainAssemblyPart NumberModelNumber Lanyard VolumeControlAlarmActivator Battery MonitorVisual Audible2204 A3-06-1402 ACR/EM-1A Yes Yes Yes Yes No2204 B A3-06-1402 ACR/EM-1A Yes Yes Yes Yes No2206 A3-06-1405 ACR/EM-2BA No No No Yes No2206 B A3-06-1405 ACR/EM-2BA No No No Yes No2208 A3-06-1402-1 ACR/EM-1D No Yes No Yes Yes2208 B A3-06-1402-1 ACR/EM-1D No Yes No Yes Yes2. OperationA siren, incorporated into the megaphone, is automatically activated by unplugging the alarm plug pin.(ACR/EM-1A only)NOTE: A long lanyard with an alarm plug pin is supplied with the megaphones for use as ananti-theft alarm (optional).Squeezing the handle stops the siren, and the megaphone is ready for use. Re-insert the alarm pin sothat the alarm will not be reactivated when the handle is released.Hold the megaphone in one hand. Place your mouth almost in contact with the microphone mouthpieceat the rear of the assembly. Squeeze the handle, which will flex slightly, turning the megaphone “ON”and speak slowly with loud, crisp, clear tones. |
Product
Learn More
Legal
Copyright © 2024 OneStart. All Rights Reserved