Avtech CSD-714 Selcal Manual de instalação - Página 8
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- 1. Table of Contents
- 2. Description
- 3. Operation
- 4. Specifications
- 5. Installation
- 6. Installation Testing
- 7. Equipment and Accessory Part Numbers
- 8. Notes for Installation Figures
- 9. Figure 1 - Wiring Diagram
- 10. Figure 2 - Outline Drawing
- 11. Figure 3 - Code Programming
- 12. Figure 4 - 20 Db Attenuator
- 13. Figure 5 - Annunciator Output Circuits
CSD-714 Installation and Operation Manual
OPERATION
Pilot operation of the CSD-714 is limited to resetting it after a call and performing a self-test.
Normal Operation
There are several installation options concerning how the annunciator lamps and audio
annunciation work, as well as how the unit is reset after a call. The lamps may be connected to
either be on steady or to flash when a call is received, and the audio annunciator may either ring
once, ring repeatedly, or not at all. Resetting the unit may be accomplished via a single reset
button, one for each channel, or by selecting the associated radio and transmitting on it, causing its
push-to-talk circuitry to reset the SELCAL. The pilot should determine from the installation
agency what the normal SELCAL response should be to a call and how to reset the annunciators.
In any case, the receipt of a SELCAL call will illuminate only the annunciator lamp for the radio
which detected the call.
Manual SELF-TEST Operation
Generating a SELF-TEST is done by pressing the SELF-TEST button, if installed. Pushing and
releasing the SELF-TEST button initiates an internal sequence within the CSD-714 which tests the
unit completely. A fully functioning unit will complete the self-test within approximately four
seconds by indicating a SELCAL call has been detected on all channels at once. Should all
channels not test correctly, the annunciator light for the failed channel will not light. Should the
unit find that the code selection programmed into the unit is invalid, it will not light any of the
annunciators and will appear to have done nothing.
In the -000 and -002 versions the annunciator outputs resulting from a self-test remain active until
manually reset. In the -002 and -003 versions the annunciator outputs resulting from a self-test
remain active for approximately two seconds and then automatically reset.
Power On SELF-TEST Operation
When power is initially applied to the unit, if the code selection the unit is programmed for is
invalid the unit will light all annunciators and will flash and strobe the chime as appropriate and
will not respond to RESET input commands. In this case, the pilot should turn the unit off and
report it malfunctioning.
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23-21-01
June 1995
Seattle, WA USA
Rev 1
Page 2