TB 9-4920-463-24
Figure 5. TI display 1800 RPM example.
(8) Use or keys to move cursor (dotted line) to 1800 RPM trace.
(9) TI readout, at top of display, will indicate peak signal is 0.80 0.08 IPS at 1800 5 RPM.
b. Adjustments. None
20. Track Test
a. Performance Check
(1) Press TI keys as listed in (a) through (c) below:
(a) TRACK.
(b) [MORE] to select 4 blades.
(c) START.
(2) Aim Strobex at rotor disk on Vibrex tester 11A and pull trigger.
(3) Stem of "h" at center of rotor disk will indicate the pattern as shown in figure 6 below.
Figure 6. Strobex pattern.
(4) Release Strobex trigger.
(5) Press TI STOP key.
b. Adjustments.