A320 CVR question.
04-19-2011 | 04:53 AM
#1
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From: 320 Left soon middle
A320 CVR question.
The other day I reminded someone that we need to activate the CVR because we were about the run a checklist. Then he went on and told me that it was always on anyhow. He made me plug my headset into the "CVR test" inlet on the overhead panel. Indeed through my headset I was able to hear him talking into his mike. Of course that does not necessarily mean the CVR was recording but it made me want to read up on it. Unfortunately there is not much about the CVR in the manual. Any ideas where to read more about this?
04-19-2011 | 05:41 AM
#2
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From: 757/767
The other day I reminded someone that we need to activate the CVR because we were about the run a checklist. Then he went on and told me that it was always on anyhow. He made me plug my headset into the "CVR test" inlet on the overhead panel. Indeed through my headset I was able to hear him talking into his mike. Of course that does not necessarily mean the CVR was recording but it made me want to read up on it. Unfortunately there is not much about the CVR in the manual. Any ideas where to read more about this?
Electronic logic automatically activates the CVR. The Digital Flight Data Recorder (DFDR) shares the same circuitry and is activated whenever the CVR is activated. Both CVR and DFDR are activated:
•For 5 minutes when the aircraft electrical system is energized.
•After the first engine start.
•Anytime in flight.
The controls for manual operation, testing the CVR, and erasing the tape, are located on the overhead RCDR panel.
The GND CTL pb, located on the RCDR panel allows the pilot to activate the CVR when electronic logic has automatically deactivated it. •For 5 minutes when the aircraft electrical system is energized.
•After the first engine start.
•Anytime in flight.
The controls for manual operation, testing the CVR, and erasing the tape, are located on the overhead RCDR panel.
04-19-2011 | 05:44 AM
#3
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From: 320 Left soon middle
You were right. The GND CTL button has to be pressed for it to record on the ground with no engines running. Here's a statement from the manual:
Electronic logic automatically activates the CVR. The Digital Flight Data Recorder (DFDR) shares the same circuitry and is activated whenever the CVR is activated. Both CVR and DFDR are activated:
•For 5 minutes when the aircraft electrical system is energized.
•After the first engine start.
•Anytime in flight.
The controls for manual operation, testing the CVR, and erasing the tape, are located on the overhead RCDR panel.
The GND CTL pb, located on the RCDR panel allows the pilot to activate the CVR when electronic logic has automatically deactivated it. •For 5 minutes when the aircraft electrical system is energized.
•After the first engine start.
•Anytime in flight.
The controls for manual operation, testing the CVR, and erasing the tape, are located on the overhead RCDR panel.
04-19-2011 | 05:56 AM
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From: 320 Left soon middle
04-19-2011 | 06:50 AM
#6
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From: 320 CA
Is it definitely recording when you put your headphone into the jack and hear yourself talk?
I would think the cockpit microphone systems would be active whenever they have electrical power, but the record function is only when the pb is pressed or the other conditions are met.
I would think the cockpit microphone systems would be active whenever they have electrical power, but the record function is only when the pb is pressed or the other conditions are met.
04-19-2011 | 07:51 AM
#7
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From: 320 Left soon middle
Is it definitely recording when you put your headphone into the jack and hear yourself talk?
I would think the cockpit microphone systems would be active whenever they have electrical power, but the record function is only when the pb is pressed or the other conditions are met.
I would think the cockpit microphone systems would be active whenever they have electrical power, but the record function is only when the pb is pressed or the other conditions are met.
05-11-2011 | 12:10 AM
#9
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From: PA18
I'm surprised they don't have a playback button on the panel where it would play like, the last 5 seconds of recording, so that you could make sure it's actually recording.
That's how our DVR's work in the facility (ATC).
That's how our DVR's work in the facility (ATC).
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