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Page Title:
Check for stepper switch homing circuit |
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| MIL-R-85323(AS)
input acceleration level shall be 2g's 10 percent at a frequency of 50
10 Hz.
Vibration parameter tolerances shall be in accordance with
MIL-T-7743. Acceleration levels shall be measured at locations adjacent
to the bomb rack mounting points on the test fixture. Care shall be
exercised to minimize resonances produced by basic bomb rack structural
components. Resonances produced by secondary structural items (brackets,
clips, etc.) are acceptable.
The total time of vibration shall not
During vibration, the following electrical tests
exceed 5 minutes.
shall be completed.
Interruption of the vibration is acceptable, if
required, to allow time for operation of switches, etc. The nomencla-
ture used to describe the electrical components are in accordance with
the applicable schematic diagrams (see 6.2.11). Unless otherwise stated
the test voltage shall be 21 -0 VDC.
Check for stepper switch homing circuit. The for-
a.
ward hooks shall be closed on all ejector units.
1.
Apply the test voltage to pin 4 (positive) and
pin 7 (ground) of connector J1.
2.
Hold the step home switch in the "step" posi-
tion to move the stepper switch out of the home
position.
Release the step home switch (off position).
3.
Depress the homing light and the bulb shall
illuminate.
Hold the step home switch in the homing posi-
4.
After the stepper switch reaches the
tion.
home position, the homing light shall illumi-
nate.
Release the step home switch (off position).
5.
The homing light shall not illuminate.
Remove the voltage from connector J1.
6.
The forward
Check for automatic homing circuit.
b.
hooks shall be closed on all ejector units.
Apply the test voltage to pin 4 and pin 7 of
1.
connector J1. The stepper switch shall auto-
matically home (a momentary pulse is applied to
the homing light).
2.
Apply the test voltage to pin 8 (positive) of
connector J1. Voltage shall exist between the
center contact and ground of the J7 connector
11
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