User Manual

AS4000 Access Concentrator
Installation and Commissioning
DLP 005
605-0000-453
Issue 1.2dr Date 7/02/00
Page 2 of 4
2.1. PSU Voltage AC Shelves: (Test 2a)
Using the DMM, measure and record the DC voltage at the front panel test points on
each of the PSU’s on the AC Shelf.
Card Fail
PSU OK
I/P A Fail
I/P B Fail
O/P Overload
O/P Underload
0V
2.1V
3.3V
5V
Figure 15. AC Shelf PSU
Ensure that the voltages measured are within the limit shown in Table 6. Record the
results in test form.
Voltage Upper Limit Lower Limit
5V DC 5.25V 4.75V
3.3V DC 3.0V 3.3V
2.1V DC 2.1V 2V
Table 6. . PSU Voltage Test
3. Commissioning rack
The chart below shows the commissioning and testing process. The reference in
brackets is the corresponding paragraph in the text. Tests are shown with a rounded
corner box and procedures are shown in a square box. In addition each test has a
number indicating the order of testing and reference for the test record sheets.