PSC 2000781J MkII MLB Operating Procedure page 23

Step
Set the power supply voltage according to Lightband size:
8.2.5
Diameter 31.0 inch and greater: 30 to 31 V
Diameter less than 31.0 inch: 27 to 28 V
Set the current limit on the power supply to 6.5 ± 0.1 A.
8.2.6
Set the timer relay to apply power for 1.50 ± 0.05 s.
8.2.7
If using the recommended Timer set it to 'D: One shot'.
Adjust Oscilloscope to properly capture all channels. Verify
1. Voltage scale (V/div) on Ch. 1 & 3
2. Current scale (A/div) on Ch. 2 & 4
3. Current probe scale matches oscilloscope (V/A) on Ch. 2 & 4
8.2.8
4. Current probes are zeroed
5. Vertical trigger level and channel (Ch. 1 recommended)
6. Horizontal trigger position
7. Horizontal time scale (s/div) will capture entire duration
Turn on the power supply output then activate the timer relay. Verify the
following occurred:
1. Voltage and current recorded per step 8.2.1
2. Measured voltage meets requirement in step 8.2.5
3. Measured current values are approximately 1/10
4. Timer relay applies power per step 8.2.7
8.2.9
5. Data saves and is readable on a computer
If any parameters are not met, make the required changes and re-run the test
circuit. Upon completion of this step, the 'Power and Measurement Circuit'
shall not be changed.
Remove the 'Test Circuit' from Figure 8-6 and connect the Lightband to the
'Power and Measurement Circuit' per Figure 8-7. Do not apply power to the
8.2.10
Lightband.
PSC Proprietary
Procedure
DC
DC
th
2000781J MkII MLB Operating Procedure
of applied voltage
Date & Initials
Tech. QA
Page 23 of 50