User Manual

AS4000 Central Terminal Installation and
Commissioning
DLP 011
605-0000-432
Issue 1.3a Date 18th October 1999
Page 1 of 2 Copyright Airspan Communications Corporation 1999
RACK TURN-UP
1. Rack Turn-Up and Measuring Input Voltage(Test 1a)
This section describes the procedure for measuring and connecting DC to the rack,
checking that the cards have the correct alarm indications on power-up and measuring
the PSU output voltages.
Using the DMM measure and record the Exchange DC voltage supply across the input
terminals (1& 2 for Supply 1 and 3 & 4 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.
Record the measured voltage on the test results sheet.
2. Switching on the rack. (Test 1b)
Switch the CT rack ON by placing both breakers up and wait for the system to
complete the power-up self test sequence. The two breakers duplicate power to each
shelf and the shelves will still function if one power supply fails though the LED
indicators on the power supplies will not be on.
Using the DMM check that DC voltage supply across the input (1& 2 for Supply 1 and
3 & 4 for supply 2) is still within the specified limits and record on the test results
sheet.
3. PSU Voltage: (Test 2)
Using the DMM, measure and record the DC voltage at the front panel test points on
each of the PSU’s on the RF Combiner Shelf. (Figure 30).
Ensure that the voltage measured is +13.5V DC +/- 500mV.
+
-
TEST
Amber Indicates
Power OK
Monitor of
PSU Output
Voltage
POWER
FAIL
Figure 30. PSU Voltage Test.