Rockwell Collins 8222532 User Manual

Rockwell Collins, Inc.

GLU-2100

User’s Manual

This manual is provided for FCC test guidance, it shall not be used for any other reason but this.

1.1 Scope

This document will detail information required to install and use the GLU-2100 unit.

1.1 Overview

The GLU-2100 is packaged in an ARINC 600 size 3 MCU case to receive and process ILS,
GLS, VOR, MB, and GNSS signals.
The GLU-2100 is a navigation sensor with internal receivers used for enroute, terminal, and
instrument approach and landing operation.
A NAV CCA provides ILS flight path deviation guidance for precision approach and landing as
well as VOR/Marker Beacon functions. The VOR function receives, decodes, and processes
bearing information from the transmitted VOR signal, while the Marker Beacon function provides
visual and aural identification when the aircraft is over a marker beacon transmitter by
illuminating one of three indicator lamps and outputting one of three audible tones (400, 1300,
or 3000 Hz). A Global Navigation Satellite System (GNSS) CCA provides navigation data for
other aircraft systems to support enroute, terminal, precision, and non-precision approach
operations.

The NAV CCA section receives very high frequency (VHF) localizer signals in the frequency
range of 108.00 to 111.95 MHz, and ultra-high frequency (UHF) glideslope signals in the
frequency range of 328.6 to 335.4 MHz. The NAV CCA additionally receives very high
frequency data broadcast (VDB) signals in the frequency range of 108.00 to 117.975 MHz in
GLS mode. The GNSS CCA section receives signals from the Global Positioning System (GPS)
nominal carrier frequency of 1575.42 MHz.

1.2 Input/Output Data Buses

The following Input and Output Data Buses are available on the GLU-2100:

1.2.1 Input:

Air Data / FMS Bus (2 Buses)
Automatic Test Equipment Bus
Data Loader Bus
Inertial Reference System / ADIRU Bus (3 Buses)
OMS/ CFDS Bus
Tune/ Function Select Data Bus (2 Buses)

1.2.2 Output:

Automatic Test Equipment
Data Loader
GNSS (3 Buses)
ILS Look Alike (2 Buses)
MMR Data Broadcast
OMS/ CFDS

1.3 Mechanical Description

The GLU-2100 is packaged in an ARINC 600 size 3 MCU case. A low insertion force
size 2 connector on the rear of the unit interfaces with the aircraft wiring. The connector
also holds the rear of the unit to the equipment rack. The GLU-2100 is cooled with
forced-air supplied to inlet holes on the bottom of the unit and exhausted through outlet
holes on the top of the unit.

The GLU-2100 chassis consists of top and bottom plates, front panel, left and right
hinged swingout side covers, and a rear connector mounted in an assembly that protects
against high intensity radiated fields (HIRF). The top insert of the rear connector is for
the GNSS antenna connection, the middle insert is for service connections and VOR/MB
antenna connections, and the bottom insert is for power and LOC/GS antenna
connections.

Access to the interior of the GLU-2100 is gained by removing the left or right side
covers. The side covers are mounted on hinges and held to the chassis with captive
screws. When the captive screws are released, the covers can be swung open.

1.4 Power Supply

The GLU-2100 operates on 115 V ac, 400 Hz single phase power supplied by the
aircraft. The input power is routed from the rear interconnect to the forward power
supply.

2 DESIGN

CHARACTERISTIC

SPECIFICATION

Connector

Rear connector

Rear connector RCPN 859-2777-630
ARINC 600 size 2 shell with three inserts and an
index pin code of 03
Top plug insert arrangement 11
Middle plug insert arrangement 14
Bottom plug insert arrangement 04

Localizer receiver
characteristics

Frequency range

108.00 - 111.95 MHz

Channel spacing

50 kHz (40 channels), 108.10 MHz to 111.95 MHz

Antennas

50 Ohms Nominal

Receiver sensitivity

Aural sensitivity 6 dB (S+N)/N minimum, over the range –99
to –33 dBm

Valid data threshold −110 dBm minimum (+/- 2.0 dBm)

Identification tone threshold −93 dBm at percent

modulation, 1020 Hz

Glideslope receiver
characteristics

Frequency range

328.6 to 335.4 MHz

Channel spacing

150 kHz (40 channels), from 329.15 to 335.0 MHz

Antenna input

50 Ohms (nominal)

Receiver sensitivity

Valid data threshold −87 dBm minimum

Instrumentation

Localizer deviation accuracy

Centering

± 0.004 DDM, 95% probability
± 0.004 DDM, bench

Glideslope deviation accuracy

Centering

± 0.0093 DDM, 95% probability
± 0.0093 DDM, bench

2.1 GLU-2100 Design Characteristics

This section provides lists of weights, dimensions, and power usage, and applicable
drawings and documents for the GLU-2100. This information is presented in Table 1.

Table 1 – GLU-2100 Design Characteristics

Localizer audio output level

Adjustable 5 to 40 mW, -87 dBm to -33 dBm, for standard
localizer signal, modulated 30 percent at 1000 Hz into 600­ohm load

CHARACTERISTIC

SPECIFICATION

VDB receiver characteristics

Frequency range

108.000 - 117.975 MHz

Channel spacing

25 KHz

Receiver sensitivity

Message failure rate ≤ 0.15%, with an input power

level of −87 dBm

VOR receiver characteristics

Frequency range

108.00 - 117.95 MHz

Channel spacing

50 kHz

Antenna input

50 Ohms (nominal)

Receiver sensitivity

Aural sensitivity 6 dB (S+N)/N minimum, over the
range –109.5 to –27 dBm

Valid data threshold −110 dBm minimum (+0.5 / -2.0
dBm)

Identification tone threshold −109.5 dBm at percent

modulation, 1020 Hz

VOR audio output level

Adjustable 5 to 40 mW, -98 dBm to -33 dBm, for
standard VOR signal, modulated 30 percent at 1000
Hz into 600-ohm load

MB receiver characteristics

Frequency range

75 MHz

Antenna input

50 Ohms (nominal)

Receiver sensitivity

Aural sensitivity 6 dB (S+N)/N minimum, 15 dBm
range of threshold (-67 dBm for high, -53 dBm for low)
to -13 dBm

Valid data threshold –67 dBm (High), –53 dBm (Low)

GNSS receiver characteristics

Frequency

1575.42 MHz

Channels

14 GPS channels, 4 SBAS channels
(Primary/Monitor)

Time to first fix

Worst Case 300 seconds (5 minutes) with or without
initialization (95%)

Accuracy (Non SBAS/GBAS)

Horizontal 15 meters 95% (HDOP 1.5) SA OFF
Vertical 21 meters 95% (VDOP 3) SA OFF

CHARACTERISTIC

SPECIFICATION

Receiver sensitivity

GPS MOPS Testing performed to a signal level of -

120.5 dBm at the input to the receiver

3 Installation

The picture below details the GLU-2100 unit mounted in the ARINC 600 3MCU mount. These
type mounts have mechanical mechanisms to allow capture and restraint of the front feet of the
unit. This restraint ensures the unit will not come loose from the mount and also that the ARINC
defined connector does remains in contact with the rear pins.

The harness that connects the RMP to the GLU-2100 is defined by the aircraft manufacturer.
The pinout can be found below.

The equipment setup comes with a complete setup station and wiring going to a standard EMI
bulkhead and from the EMI Bulkhead to the test equipment as shown in the pictures below.

Figure 1 -GLU-2100 Module Interfaces