Related Manuals for Sine Systems AFS-1
Summary of Contents for Sine Systems AFS-1
- Page 1 Audio Failsafe Model AFS-1 – Instruction Book – This documentation is valid for Audio Failsafe hardware version 2.00 Nashville, Tennessee...
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Page 2: Table Of Contents
Page Number Functional Description Physical Description Section 5 — Installation Paragraph Title Page Number Unpacking Mechanical Installation Electrical Installation Power Connection Relay Connection Audio Connections Loss of Power to AFS-1 Safety Considerations Modifying Operating Parameters Version 2.00 Table of Contents... - Page 3 Section 7 — Illustrations and Diagrams Paragraph Title Page Number List of Illustrations and Diagrams AFS-1 Schematic Diagram AFS-1 Component Locations Section 8 — Parts List Paragraph Title Page Number AFS-1 Audio Failsafe Parts List Version 2.00 Table of Contents...
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Page 4: Warranty
Section 1 — Warranty/Product Registration 1.1 Warranty Sine Systems, Inc. agrees to repair or replace the AFS-1 Audio Failsafe at no cost, if the unit fails in normal use, during the first year of original ownership. This Warranty does not include damage caused by improper installation or use nor does it include damage caused by any other external means. -
Page 5: Safety Information
Because of exposed terminals, high voltage (greater than 25 volts) should not be connected to the relay terminals, or any other terminals on the AFS-1. If the AFS-1 is connected so that loss of audio turns a transmitter off, the return of audio could turn a transmitter back on. -
Page 6: General
Section 3 — Specifications 3.1 General Output Relay Operation Output relay contact closes within one second after audio becomes present and remains closed as long audio is present. Output relay contact opens at the end of an adjustable delay period after audio becomes absent. -
Page 7: Section 4 - Equipment Description
4.2 Physical Description The AFS-1 is contained in a small "modem-sized" case (5.5" x 5.5" x 1.75") and can be mounted in any convenient location such as on a wall, inside an equipment rack, or it may be rack mounted with an optional kit. -
Page 8: Section 5 - Installation
This makes wiring to these connectors considerably easier. 5.4 Power Connection Power to operate the AFS-1 is supplied by a 12 volt AC "wall plug" transformer supplied with the AFS-1. The leads of this transformer should be stripped and connected to the terminals marked "12 VAC"... -
Page 9: Audio Connections
5.7 Loss of Power to AFS-1 It should be noted that if power is lost to the AFS-1, the control relay will open. If it is necessary to disconnect power to the AFS-1 without opening the relay contacts, place the switch on the front panel in the "DEFEAT"... -
Page 10: Modifying Operating Parameters
5.9 Modifying Operating Parameters The AFS-1 operating parameters can easily be modified to suit special applications. The period of time required after the loss of audio before the relay contact opens is set at the factory to approximately 4.5 minutes. -
Page 11: Audio Section
Section 6 — Circuit Description 6.1 Audio Section The first two sections of U1 are balanced audio input stages of the "A" and "B" audio inputs. Overall, these have a gain of 0.33 (loss). The next stage combines the two channels and has a gain of 10.
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