PSC 2000781J MkII MLB Operating Procedure page 36

Step
Prepare to deploy the Lightband. See Figure 10-3 and Table 10-1 for the
10.1.13
anticipated current draw and power duration. The Lightband should separate
in ≤ 0.1 s and the deploy limit switches on the Motor Bracket Assembly will
automatically cut power to the motors.
If a force was applied per step 10.1.10 the Upper Ring will not move. This
force will be removed at a later step, allowing the Separation Springs to
extend.
Verify the oscilloscope trigger is active and ready to acquire data.
When ready activate the timer relay to deploy the Lightband.
Manually cut power if the current limit is reached or the timer relay runs
longer than specified and contact PSC immediately. A visual inspection of
the Lightband may be performed, but do not change configuration.
De-activate the power supply output.
10.1.14
Save the voltage and current profiles for both motors and verify the data is
10.1.15
readable.
Figure 10-3 shows sample deploy voltage and current profiles. Complete
10.1.16
Table 10-1 to verify all parameters are within tolerance. Single data point
exceedances are acceptable. Also, a slow sample rate may alias data. Do
not filter data. Contact PSC immediately if a discrepancy is found.
Remember to account for non-zero offsets in the voltage or current
measurements.
Figure 14-1 shows the post-deploy state of the Motor Bracket Assembly
10.1.17
switches. Measure resistance directly at the Lightband's DB-9 connector by
completing Table 14-1. See Figure 16-2. Contact PSC if a discrepancy is
found.
Slowly remove the weight/force on the Upper Ring, allowing the Separation
10.1.18
Springs to elongate. Verify that the Upper and Lower Rings can physically
separate.
If using a crane, continuously monitor an in-line load cell to ensure the Upper
Ring releases properly.
PSC Proprietary
Procedure
2000781J MkII MLB Operating Procedure
Date & Initials
Tech. QA
Page 36 of 50