Avionics test instrument ILS-3M

aeronauticalportablecompact

Product Overview
The ILS-3M Instrument Landing Simulator is a compact, highly integrated portable instrument for in-situ qualitative testing of onboard Instrument Landing Systems (ILS). It provides status confirmation of aircraft-installed ILS receivers while the aircraft is parked on the tarmac. The unit generates RF signals across the full LOC and GS frequency bands with adjustable modulation depth and differential modulation (DDM) to emulate ground-based localizer and glide slope signals. A dedicated antenna transmits marker beacon (MB) signals — far, middle and near — to validate marker beacon reception and overall ILS receiver performance.

Technical Specifications

• Power supply: Two 3.7V 2600mAh 18650 lithium batteries
• Operating modes: LOC (localizer), GS (glide slope), MB (marker beacon)
• LOC: 108.10–111.95 MHz (40 channels); accuracy ±0.0025%; audio tones 90Hz/150Hz/1020Hz (controllable); AM modulation depth 12–28%; DDM range -0.15 to +0.15 (step 0.01); transmit power 0±1.5 dBm
• GS: 329.15–335.00 MHz (40 channels); accuracy ±0.0025%; audio tones 90Hz/150Hz (controllable); AM modulation depth 30–50%; DDM range -0.15 to +0.15 (step 0.01); transmit power 0±1.5 dBm
• MB: 75.0 MHz; accuracy ±0.005%; audio tones 400Hz/1300Hz/3000Hz (controllable); AM modulation depth ≥65%; transmit power ≥-5 dBm
• Operating distance: LOC/GS 4–6 m; MB 2–3 m
• Weight: ≤ 1.5 kg; Dimensions: 215 × 108 × 65 mm
• Environmental: Operating temperature -10 to +45 °C; Storage temperature -25 to +60 °C