Honeywell VXP, System Maintenance Manual, Page: 25 / 105

Introduction
VXP System Maintenance Manual 1-15
1.2.7 FasTrak Day/Night Optical Tracker
The FasTrak (Day/Night Model 13945) is a camera-like instrument that tracks moving blades. It
can gather these measurements during the day or night. The FasTrak gathers the following
information:
• Relative blade height (track)
• Blade lead-lag measurements
• Diagnostics related to these measurements
Leading particulars are shown in Table 1-7.
1.2.8 Strobex
The Strobex is a hand-held strobelight used primarily for tail rotor blade tracking on the VXP. Its
flash rate is controlled by the Acquisition Unit and is a multiple of the incoming Photocell pulse
rate. The Strobex flash rate can also be controlled from within the VXP DP. The Strobex has
rounded corners and an attached cable assembly that plugs directly into the AU. Leading
particulars are shown in Table 1-8.
Table 1-9. FasTrak Leading Particulars
Particular Characteristic
Weight 1.1 lb (0.50 kg.)
Dimensions Height: 5.1 in. (129.5 mm)
Diameter: 3.6 in. (91.4 mm)
Environments Day and night
Resolution +/-1.0 mm (typical)
Track Accuracy +/-5% of r/-1.0 mm
Operating Temperature -55° to +85° C
Table 1-10. Strobex Leading Particulars
Parameter Characteristic
Input Voltage 22-30 Vdc (reverse voltage protected)
Input Current 2.25 amps maximum
Energy Per Flash 1.75 watts-second (below 25 flashes/sec)
Flash Synchronization To leading edge of trigger pulse
Maximum Flash Rate 250 flashes per second
Input Sync Voltage +0.5v min to +15v max IMS pulse to square
wave