User Manual

AS4000 Access Concentrator

Installation and Commissioning

DLP 006

605-0000-453

Issue 1.2dr Date 7/02/00

Page 2 of 2

Using the DMM check that the DC voltage supply across the input terminals (TB1(-);

TB2+;.for Supply 1 and TB4(-); TB5(+) for supply 2). Ensure that the voltage

measured complies with the site nominal voltage and is within the limits specified on

the test results sheet.

3. 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 PSUs on the Access Concentrator Shelf.

Card Fail

PSU OK

I/P A Fail

I/P B Fail

O/P Overload

O/P Underload

2.1V

3.3V

Figure 17. Access Concentrator Shelf PSU

Ensure that the voltages measured are within the limit shown in Table 7. 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 7. Access Concentrator Shelf PSU Voltages.

STOP. THIS PROCEDURE HAS BEEN COMPLETED.