A-4 Chadwick-Helmuth A Business Unit of Honeywell International, Inc.
Appendix A - 8520C-36 Signal Selector
A.4.3.2 Power-Up Self-Test
a. Hold down START key on 8500C/C+ and turn on power supply.
NOTE: This erases all memory in 8500C/C+.
b. Wait until Power-Up Self-Test display appears and release START key.
A.4.3.3 Test Procedure (C-130 Setup)
a. Ensure that only one No. 6 screw is installed above “h” on logo on Calibrator 11A rotor
disk.
b. Set CAM RATE (RPM) switch to 900.
c. Set MOTOR switch to ON.
d. Adjust pot next to 900 CAM RATE switch position until 2nd ring from outside on rotor
disk appears frozen in place under 60 Hz light
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.
e. Press BALANCE key on 8500C/C+.
f. Press SETUP key.
g. Key in 450 with numeric keys in BALANCE FREQUENCY field.
h. On same line, select last number (called “times factor”) with arrow keys.
i. Key in x2 as new times factor.
j. Select <AUTO STOP> field with arrow keys.
k. Press CHANGE soft key to select <MAN STOP>.
l. Select PHASE UNITS field with arrow keys.
m. Press CHANGE soft key to select <DEGREES>.
n. Select PICKUP field with arrow keys.
o. Press CHANGE soft key to select CHANNEL <A>.
p. Select INPUT field with arrow keys.
q. Key in 10 with numeric key (for #6 AFT COMP cable).
r. Press ENTER soft key.
s. Wait 10 seconds.
t. Press START key.
u. Verify that display indicates:
900±1 RPM
0.4±0.04 IPS
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Attention, users outside U.S.: The 11A Calibrator can also be calibrated under 50Hz light. For
1714 rpm and 923 rpm cam rates, inner two rings on rotor disk are used. Remember to enter half
these rates in 8500C/C+ setup screen, when called for in the following steps.
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