NAT 802 009 Switch Panel, 700 Digital Audio Control Amplifier, Passenger Speaker Amplifier Installation and Operation Manual

Below you will find brief information for Switch Panel 802 009, Digital Audio Control Amplifier 700. The NAT 802-009 Switch Panel is designed to control a single Model 700-xxx Digital Audio Control Amplifier. It also provides microphone audio switching and keying operations for four radio transmitters. The 802-009 Switch Panel continuously reads the status of its own audio control switches and volume control potentiometers and compiles this information into the form of a digital signal. The digital signal is sent to the Model 700 from the switch panel in RS422 serial format. The Model 700 receives, demultiplexes and converts this digital signal into useful audio control information.

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NAT 802 009 Switch Panel Installation and Operation Manual | Manualzz

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Key features

  • Provides microphone audio switching and keying operations for four radio transmitters.
  • Continuously reads the status of its own audio control switches and volume control potentiometers.
  • Sends a digital signal to the Model 700 in RS422 serial format.
  • Capable of digitally controlling all Model 700 amplifier functions.
  • Provides control for up to four transceivers, eight receivers and a public address.
  • Customizable unit
  • Provides antenna switching unit control, marker (MKR) receiver sensitivity control and public address (PA) amplifier control.

Frequently asked questions

The NORM MIC and OXY MIC inputs are compatible with carbon and amplified dynamic microphones. The HAND MIC input is compatible with carbon and amplified dynamic microphones. It receives its bias current from the Model 700 amplifier through the 802-009 to Model 700 HOT MIC connection.

The MIC SELECT switch is used to select the transceiver for transmission. It connects the mic input to the selected transmitter or PA mic output. It also turns on the PTT Mute function of the Model 700, and in the PASS position, it turns on the PA Key (sidetone) function of Model 700 and enables PASS volume control to the PA amplifier. In the HF1 and HF2 positions it allows for antenna switching unit control.

The OXY MODE INPH VOL adjustment is used to adjust the preset interphone volume when the NORM MIC/OXY MIC selector switch is in the OXY MIC position and the oxygen mask microphone is in use.
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