NAT 437 audio amplifier Installation and operation manual

Model 437 Audio Control Amplifier is a remotely controlled intercom/audio amplifier for aircraft with two cockpit audio stations. It switches up to 14 receivers, 4 sidetone inputs and an interphone. Headphone and selected speaker outputs are isolated with a cockpit voice recorder output providing summation of headphone, speaker and microphone audio. Microphone audio is recorded on the CVR at all times.

PDF Download
Document
NAT 437 437 Installation and Operation Manual | Manualzz

Advertisement

Advertisement

Advertisement

Key features

  • Remotely controlled
  • Intercom/audio amplifier
  • Switches 14 receivers
  • Headphone and speaker outputs
  • Cockpit voice recorder output
  • Voice-activated switch
  • Selective audio filtering
  • Separate power inputs
  • Electronic switches
  • Adjustable audio levels

Frequently asked questions

It is an intercom/audio amplifier designed for aircraft with two cockpit audio stations, switching up to 14 receivers, sidetones, and interphone.

Microphone audio is recorded on the Cockpit Voice Recorder (CVR) at all times, as it is unswitched and unmuted.

No, the Model 437 does not have any controls accessible by the user. All functions are controlled by external switches and potentiometers in the cockpit.

You can adjust the speaker, auxiliary input, voice activation threshold, filter, sidetone, and mute levels through the potentiometers on the side of the unit.

It requires a 28 Vdc power supply with a maximum current of 1 Ampere.
Preparing document for printing…
0%