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Instrument Landing System |
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Benefits | Specifications | Download a pdf of this product 
 The Interscan ILS900 Instrument Landing System is a ground based precision
approach aid to assist aircraft approach to runways. The system enables the
aircraft to be maneouvered along a precise, predetermined, final approach path.
The ILS is configured for either Category-I or -II as per requirements
of ICAO Annex 10.
The ILS system comprises a Glide Slope (GS) system and a Localiser
(LOC) system for vertical and horizontal course information on approach, and
transmits coded signals to determine the amount of deviation from the optimum
approach path.
Benefits of the ILS900 includes:High reliability
- Hardware based design, with microprocessor monitoring
- Contains no moving parts
- Fully solid state, including power amplifier
- Meets or exceeds all ICAO requirements
- Can withstand major power supply fluctuations and spikes
- Requires no cooling fans
Low maintenance costs
- Remote Maintenance Monitoring (RMM) available
- Synthesiser controlled signal generation
- Computer assisted alignment
- Low power consumption
Meets A Range of Requirements
- 1-Frequency or 2-Frequency operation
- Available for CAT-I or CAT-II
- Different antenna configurations available
- Includes AC power supply/battery charger, allowing use
of float battery for “no break” power source
- DME or marker beacon for distance information
Specification Summary
The following characteristics apply over the range of environmental conditions
specified.
| LOC |
Operating frequency
Frequency accuracy
Channel Spacing
Output power
Spurious
Reliability |
108 to 112
MHz
±0.001%
50 kHz
Course CSB signal
Course SBO signal
Clearance CSB signal
Clearance SBO signal
<-60dB
>22,000 hrs |
12W
1W
5W
1W |
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| GS |
Operating frequency
Frequency accuracy
Channel Spacing
Output power
Spurious
Reliability
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328 to 336MHz
±0.001%
150 kHz
Course CSB signal
Course SBO signal
Clearance CSB signal
<-60dB
>23,000 hrs
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5W
0.15W
3W
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| Input Power |
Primary supply
Standby Power
Current (LOC or GS)
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98~264 V AC,
50/60Hz 1,000VA
48V DC (nominal)
9A typ |
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| LOC Antenna system (2F) |
Type
Frequency range
3dB Beamwidth
VSWR
Polarisation
Front:back
Impedance |
2F wide aperture LPD, 14 Element
108-112MHz
±2.4°
<1:1.2
Horizontal
>26dB
50 ohms
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| GS Antenna system |
Type
Mode
Frequency range
3dB beam width
VSWR
Polarisation
Front:back
Impedance
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Half wave length dipole, 3 Element
M-type
328.6-335.4MHz
25° horizontal, 80° vertical
<1:1.2
Horizontal
>16dB
50 ohms
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| RCMS System |
PC based |
Monitoring, control and alignment/test functions
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| Environmental |
Indoor equipment:
Outdoor equipment: |
Temperature
Humidity
Temperature
Humidity
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-10°C to +50°C
95% (to 45°C); 50% (45°C to 50°C)
-40°C to +70°C
100% |
Specifications subject to change without notice.
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