108 Chadwick-Helmuth Company, Inc.
Chapter 5 - General Operation
5. Plug the dc connector from the Strobex cable into the appropriate dc
power required for the Strobex used.
6. Place the Strobex control in the Slave mode - “A”.
NOTE: This step is not necessary with the Model 135M-12 Strobex.
7. Operate the aircraft at the desired RPM.
8. Power up the Vibrex unit and press the
TRACK & BALANCE
context
key.
9. Press the
STROBEX TRACK
context key. The Strobex Track screen
displays (see the illustration on page 93).
10. Enter the number of tail rotor blades, using the alpha-numeric
keypad.
11. View the track from the root of the tail boom while looking at the
edge of the tail rotor disc (with the aircraft running). Deviations from
left to right indicate out-of-track in the obvious sense.
12. Synchronize the flash of the Strobex with the photocell timing pulse
so the blade tip targets become superimposed.
13. Judge the correct track by how far away from the tail boom the targets
appear or by how far from left to right the targets appear, relative to
each other.
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