Marker out of FOM; Thermal instability; Temperature out of range; Shadow over target
Operating system
MS-Windows 2000/XP, Linux
Minimal computer hardware
800 MHz CPU, 128 MB RAM, 20MB disk space
1. H40, single target (Xpoint), over 20,000 averaged positions at depths of 40-100cm
2. H40, single target at a depth of 75cm, 150 Lux, 20ms shutter
3. The range can be extended to 20:1 with black/gray targets under bright illumination