Side-by-side
Precision Approach Path Indicator (PAPI / APAPI) (Signalight-made) vs Advanced Visual Docking Guidance System / A-VDGS (RLG Docking Systems, distributed by Vardhman Airport Solutions)
Spec comparison for two products on Aviation Souk. Both compete in Runway Lighting & Airfield Electrical.
Runway Lighting & Airfield Electrical
Precision Approach Path Indicator (PAPI / APAPI) (Signalight-made)
by Signalight (Electromax SRL)
ICAO Annex 14-compliant PAPI and APAPI visual glideslope indicators with integrated electronic clinometer, factory-calibrated for precise half-degree angular precision.
Runway Lighting & Airfield Electrical
Advanced Visual Docking Guidance System / A-VDGS (RLG Docking Systems, distributed by Vardhman Airport Solutions)
by Vardhman Airport Solutions
A 3D laser-scanning docking guidance system from RLG Docking Systems (Taiwan) that tracks incoming aircraft nose position in real time and displays stopping and azimuth guidance to the flight deck — eliminating the weight and height variables that defeat simpler optical systems.
| Cost of ownership | Precision Approach Path Indicator (PAPI / APAPI) (Signalight-made) | Advanced Visual Docking Guidance System / A-VDGS (RLG Docking Systems, distributed by Vardhman Airport Solutions) |
|---|---|---|
| Price tier | — | — |
| Lead time (weeks) | ?–? | ?–? |
| Delivery | — | — |
| Install | — | — |
| GCC airports deployed | 0 | 0 |
| Certifications | 0 | 0 |
Specs
Technical specifications.
| Spec | Precision Approach Path Indicator (PAPI / APAPI) (Signalight-made) | Advanced Visual Docking Guidance System / A-VDGS (RLG Docking Systems, distributed by Vardhman Airport Solutions) |
|---|---|---|
| Configuration | PAPI (4-unit) and APAPI (2-unit) | — |
| Power consumption | 50 W max per unit | <700 W |
| Power supply — PAPI | 2.8–6.6 A CCR input | — |
| Power supply — APAPI | 110/230 V AC mains | — |
| Angular fault detection | 0.5 ° deviation threshold | — |
| Housing | Powder-coated aluminium RAL 1004, hardened glass diffuser | — |
| LED source | OSRAM red + white with custom optics | — |
| Standard | ICAO Annex 14 Vol. 1, 7th Edition 2016, Fig. A2-23 + §5.3.5.30 | — |
| Sensing technology | — | 2-axis laser scanning (3D) |
| Range accuracy (>50 m) | — | ±0.2 m at 150 m |
| Range accuracy (<50 m) | — | ±0.05 m |
| Power input | — | AC 85–240 V, 50/60 Hz auto-select |
| Pilot display — azimuth bar | — | 12-inch, high-visibility |
| Pilot display — distance readout | — | 8-inch alphanumeric |
| Aircraft type coverage | — | All ICAO aircraft types |
| Optional interfaces | — | PBB, GPU, PCA, CCTV, FIS/FOS, SITA AMS |
| Compliance | — | ICAO Annex 14 |
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