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Procedure 10-9 (continued)
Adjusting dc distribution shelf low voltage disconnect
Action
Step
1
2
3
4
Table 10-13
LVD LED indications
If the event that happens while you are
adjusting the TST ADJ potentiometer is
The LVD LED illuminates before reaching
-43.0 ± 0.2 V dc
The LVD LED does NOT illuminate before
reaching -43.0 ± 0.2 V dc
The LVD LED illuminates at -43.0 ± 0.2 V dc
5
6
7
8
9
10
11
AccessNode Series 800A Outside Plant Cabinet Installation 323-3001-210 Issue 1.0
Adjusting the rectifier and the dc distribution shelf 10-29
Action
Ensure that the LVD BYP/NORMAL switch is set to the BYP position.
Connect the digital voltmeter to the BAT GRD and -48V test points on the front
of the dc distribution shelf.
Monitor the voltage at the test points to verify the LVD threshold.
Slowly adjust the TST ADJ potentiometer counterclockwise until one of the
three events shown in Table 10-13 occurs.
Continue to adjust the TST ADJ potentiometer clockwise until the voltage
reading reaches -43.0 ± 0.2 V dc.
Slowly turn the LVD potentiometer counterclockwise until the LVD LED
extinguishes.
Slowly turn the LVD potentiometer clockwise until the LVD LED illuminates.
Go to step 11.
Using the TST ADJ potentiometer, set the voltage reading to -43.0 ± 0.2 V dc.
Slowly turn the LVD potentiometer clockwise until the LVD LED illuminates.
Continue the dc distribution shelf adjustments using Procedure 10-10 on
page 10-30.
—end—
Then perform these steps
go to step 5.
go to step 9.
go to Procedure 10-10.
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