Sandel ST3400H HeliTAWS, Installation Manual

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1.6.3 Operational Characteristics
Temperature/Altitude: -20° C to +70° C / up to 55,000 F
Power Input: 28VDC nominal, 40 watt maximum. Operating range
22VDC – 33VDC
Cooling Requirements: Internal fan. Requires ambient air at fan input along the four
corners of the 3ATI case.
1.7 Interface Characteristics
The ST3400H is software configurable and configuration data is stored internally and in an
optional airframe-resident configuration module.
Configuration Module: Rear mounted inside 9-pin ‘D’ connector shell
Data Loading: Front panel USB
GPS Position: ARINC 429 or RS232
GPS Flight plan: ARINC 429 or RS232
Air Data: ARINC 429 or Analog
Heading: ARINC 429 or ARINC 407 (XYZ)
Gear: Discrete: active high or low
Glideslope: ARINC 429 or low-level deviation and flag
Localizer: ARINC 429 or low-level deviation and flag
Audio Outputs: 4 to 8 ohm speaker, 5 watt max
500 ohm, 25mw or 125mw configurable via strap
External Annunciators: Open/GND (Open Drain) GND=Active
250ma maximum (installation optional)
External Switches: Momentary action, Open/GND
GND to activate (installation optional)
Radar Altimeter: ARINC 429 or Analog
Traffic: ARINC 429
82046-IM-K ST3400H INSTALLATION MANUAL Page 1-5