Related Manuals for Sine Systems AFS-3
Summary of Contents for Sine Systems AFS-3
- Page 1 Audio Failsafe Model AFS-3 – INSTALLATION AND OPERATION – This documentation is valid for Audio Failsafe hardware version 3.0 and software version 1.0 Nashville, Tennessee • 615-228-3500...
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Page 2: Table Of Contents
4.2.1 Factory Warranty 4.2.2 Factory Return Policy 4.2.3 Factory Service Policy 4.2.4 Warranty Service 4.2.5 Service Rates 4.2.6 Instructions for Factory Service Section 5 – Specifications General Specifications Audio Input Relay Output Schematic Diagram Component Layout AFS-3 Table of Contents... -
Page 3: Section I - Safety Information / Warranty
If the AFS-3 is connected so that loss of audio turns a transmitter off, the return of audio could turn the transmitter back on. Operating and maintenance personnel should be mindful of this possibility and be sure the transmitter is rendered inoperable before servicing the transmitter, antenna, or associated equipment. -
Page 4: Section 2 - System Descriptions
General Description The AFS-3 monitors one or two audio signals and provides a relay contact closure as long as at least one of the audio signals is present. When no audio is present for a preset period (adjustable from 30 seconds to 5 minutes), the relay contact opens and remains open until one or both of the audio signals return. -
Page 5: Section 3 - Installation
The Audio Failsafe is powered by 12 volts AC. The included wall-plug power transformer should be used. The leads of this transformer should be stripped and connected to the terminals marked "12 VAC" on the rear panel of the AFS-3. -
Page 6: Delay Adjustment
Generally, the most desirable location to "tap" the audio signal for use by the AFS-3 is a point where the signal level is somewhere between 0 dBm and +10 dBm. This could be the output of a discrete STL, the output of audio processing equipment, or the transmitter's audio input terminals. -
Page 7: Logic Voltage Output
3.2.6 Logic Voltage Output If the AFS-3 will be connected to an external sensing device, there are jumpers inside the AFS-3 that can be set so that the output relay switches a logic voltage to indicate an alert condition. Jumper positions JP2-4 set the logic voltage output. No jumpers are installed at these positions at the factory and the relay contacts are dry--no voltage. -
Page 8: Power Supply Loss
Power Supply Loss Note that if power is lost to the AFS-3 the output relay will relax because there is no voltage to energize the coil. Additionally, there will be no logic voltage output since there is no power supply. Consider this and take necessary steps if it becomes necessary to disconnect power from the AFS-3. -
Page 9: Section 4 - Circuit Description And Repair
Factory Warranty Sine Systems, Inc. guarantees our products to be free from manufacturing defect for a period of one year from the original date of purchase from Sine Systems, Inc. This warranty covers the parts and labor necessary to repair the product to factory specifications. -
Page 10: Factory Service Policy
Factory Service Policy Sine Systems is proud to offer same day repair service on all of our products. When we receive damaged equipment, we will repair it and ship it back the same day it arrives. Because we offer immediate service, we do not send loaner equipment. -
Page 11: Instructions For Factory Service
Sine Systems is not responsible for equipment that is not delivered to our factory. It will be your responsibility to contact the carrier to retrieve your improperly delivered equipment. -
Page 12: Section 5 - Specifications
Weight 1.5 lbs. Audio Input Inputs 2 (combined) Type Actively Balanced Impedance 60 K Ohms Sensitivity -16 dBv Relay Output Contacts Form C contacts rated at 120 volts AC, 5 amps resistive / 2 amps inductive AFS-3 Specifications page 5.1... -
Page 13: Component Layout
Component Layout AFS-3 Specifications page 5.3... - Page 14 600 V/1 A, 1N4005 diode, zener, 5.1 V/1 W, 1N4733A enclosure, assembly, platinum, T1 MicroPak, 5.0" enclosure part, overlay, lexan, printed for AFS-3 enclosure part, rack panel, aluminum, painted for AFS-2 enclosure part, rear panel, T1 MicroPak, punched for AFS-2 (overlay) fuse, polyswitch, resettable, 0.4 amp, 60 V...
- Page 15 C&K latched pushbutton, light gray, round switch, DIP, rotary, 10 position, front adjust switch, pushbutton, latched, DPDT, PCB, 90° transformer, wall plug, 12V AC, 1.0 A / 18W varistor, metal oxide, 18 VDC, 14 VAC AFS-3 Specificiations...
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