Skip to main content

GH-3900RSU Electronic Standby Instrument System (ESIS)

Product overview

At only 1.5 inches deep, the L3Harris GH-3900RSU™ Electronic Standby Instrument System (ESIS) is the thinnest and widest electronic standby instrument available for business, regional and commercial aircraft and helicopters. Highlighting the system’s design is a Remote Sensor Unit (RSU) which enables the 4.2-inch (diagonal) landscape display to be installed virtually anywhere on the panel. The GH-3900RSU ESIS is designed to meet the needs of Part 23 (Class III & IV), Part 25 aircraft and Part 27/29 rotorcraft.

Key features

Two pieces mean one flexible solution

The two-piece design of the GH-3900RSU gives aircraft designers and avionics installers the greatest possible flexibility when it comes to its location. Utilizing a two-part system design that separates the display from the sensor array, the 1.5-inch-deep unit can be installed almost anywhere behind the aircraft's panel, even in areas with limited space.

The GH-3900RSU, which houses rate/level sensors, air data transducers and optional accelerometers, delivers attitude, altitude, airspeed and navigation data to the high-resolution wide-screen DU-42 display, ensuring pilots will have the critical information they need in case of main instrument system failures. Heading data is also available using an ARINC 429 source or the L3Harris MAG-3000 magnetometer.

 

User defined display configurations

The GH-3900RSU allows the avionics installer to easily define data I/O interface, Static Source Error Correction (SSEC) and Velocity Maximum Operation (VMO) values, along with customizing the display parameters to meet individual requirements.

Product specifications

DU-42 Display
DIMENSIONS (L x W x H)*

1.50 in. x 5.25 in. x 3.00 in.
(38 mm x 133 mm x 76 mm)

*Excluding knob and connector

WEIGHT 1.5 lb. max (0.68 kg)
INTERFACES
  • ARINC 429 Inputs (3) and Output (1)
  • USB Serial Bus (1)
  • RS-232 Serial Bus (1)
  • I2C Serial Bus (1)
  • Analog Input (1)
POWER +28 VDC, nominal
CERTIFICATIONS TSO-C2d, C3e, C4c, C6e, C8e, C10b, C34e, C35d, C36e, C40c, C46a, C66c, C95a, C106, C113a
SOFTWARE/HARDWARE DO-178B Level B / DO-254 Level B
GH-3900RSU
DIMENSIONS (L x W x H)*

8.32 in. x 3.19 in. x 3.35 in.
(211 mm x 81 mm x 85 mm)

*Excluding knob and connector

WEIGHT 3.0 lb. max (1.36 kg)
INTERFACES
  • ARINC 429 Inputs (7) and Outputs (3)
  • RS-422 Serial Bus (1)
  • RS-232 Serial Bus (1)
  • Discrete Inputs (6) and Outputs (2)
  • Analog Inputs (2)
  • Pneumatic Pressure Ports
POWER +28 VDC, nominal
CERTIFICATIONS TSO-C2d, C3e, C4c, C6e, C8e, C10b, C46a, C95a, C106
SOFTWARE/HARDWARE DO-178B Level A / DO-254 Level A

Downloads

  • GH-3900RSU ESIS Datasheet

MAKE AN INQUIRY FOR AIR TRANSPORT, REGIONAL OR MILITARY

Please complete the form below to contact our team.

We value your interest and our goal is to be respectful of your time by responding to your inquiry in the most efficient way possible.

State
Aircraft Type *
(Please select all options that apply.)
Product Category *
(Please select all options that apply.)
Commercial aircraft inflight

Support

Visit Technical Support Website

To gain access to the latest technical publications, service bulletins and other pertinent information about your recorders or other L3Harris devices, operators and authorized repair facilities need to register with our technical support organization for the online library.

Technical support:
Email: techsupport.cas@l3harris.com
Phone & AOG hotline: +1 (321) 674-4900

Technical publications:
Email: avionics.techpubs@l3harris.com

Cage Code / Federal Supply Code: 25583

Facility / Shipping / Mailing address:
5353 52nd Street, S.E.
Grand Rapids, MI 49512-9704 USA

Order administration / Sales / General inquiries:
Phone: +1 (616) 949-6600
Email: avionics.sales@l3harris.com

Repair and overhaul administration: 
Email: avionics.service@l3harris.com
Phone: +1 (321) 674-4900
Fax: +1 (616) 977-6895
For service repair (Part 145) returned material authorizations (RMA): Visit RMA website

Data services:
Email: dataservices.avionics@l3harris.com