User Manual

AS4000 Central Terminal Installation and

Commissioning

DLP 013

605-0000-432

Issue 1.3a Date 18th October 1999

Page 1 of 2 Copyright Airspan Communications Corporation 1999

TEST TX OUTPUT POWER 2.0-2.3GHZ AND 2.3-2.5GHZ

BANDS

1. Test TX Output Power (Test 5)

Note: If adding a shelf and rack is in service omit this test

This section describes the measurement of TX output power. It involves powering

down and disconnecting the antenna. In existing installations this involves loss of

service to all users. Steps should be taken to minimise disruption if the rack has

existing users by completing the rest of the commissioning quickly.

1. Switch rack off by placing both breakers in the off position.

2. In existing installations disconnect antennas or in new installations remove the

load from the port to be tested. Connect Power Meter to the N-Type connector on

the coupler attached to the DIP/LNA at the top of the rack ready to measure the

power output from shelves 1 and 2, or to the N-type connector on the coupler

attached to the TX filter for shelves 3 and 4. The port not under test should be

terminated with a 15W termination.

POWER

METER

15W termination if

the TX Filter is fitted

RF Power meter

connection when

measuring Modem

Shelves 1 & 2

TX Output Power

DIP/LNA1 TX Filter

15W

Termination

RF Power meter

connection when

measuring Modem

Shelves 3 & 4

TX Output Power

DIP/LNA1 TX Filter

Coupler

POWER

METER

Figure 35. Power Level measurement Test Set-up

3. Ensure that modems are not inserted in any shelf. Disconnect any modems that are

inserted by using the board extractor lever to unseat the board from the backplane

and sliding forward in the card guides. There is no need to completely remove the

modem from the shelf.