User Manual

AS4000 Operations and Maintenance
Section
605-0000-431
6
. Issue 1.6. Date3/2/99
DLP-013
Page 9 of 60 © Copyright Airspan Communications Corporation 1999
h) From the test menu, point and click ST Loopback button.
i) Select the loopback direction as Towards Network and check TU through path on
timeslot 1 and 2.
j) Once the above is configured point and click OK button. This will set the radio
traffic mode: high rate and high power.
k) Once the test menu is available again leave the menu open, do not close or free
line if the traffic mode is to be maintained.
12. Adjust the gain control voltage on Sitespan to achieve a RF Power level of nominally +8dBm
for 2.0 - 2.3GHz Band or +7dBm for 2.3 - 2.5GHz BAND-Band on the RF Power meter.
The exact reading should be 11dBm for 2.0 - 2.3GHz Band or 10dBm for 2.3 - 2.5GHZ
BAND Band- the measured loss from point C to point B in Figure 7-3. Record the voltage
and power level on the Test Result Sheet.
13. Remove the loopback by selecting Loopback Off and OK to deactivate the loopback. Close
test menu and return to the Subscriber View.
14. Putting the rack back in service
a) Switch the Test CRU and CT Rack OFF.
b) Remove the Test CRU and all interconnecting cables and accessories from the RF
Output connectors on the CT.
c) Re-connect the Antenna /Feeder tails to the CT.
d) Connect the Element Manager cables to the 25 way EM/Sitespan port on the
modem backplane
e) Re- connect the 2Mbit/s ports to the 2Mbit/s IN (SK16 - BNC or PL7 - Type 43)
and 2Mbit/s OUT (SK15 - BNC or PL8 - Type 43) connectors on the shelf
interface connections located at the right hand side of each Modem Shelf.
f) Switch the CT Rack ON and wait for the system to complete the power-up self
test sequence successfully.
This concludes the CT set-up tests.