User Manual

AS4000 Operations and Maintenance

Section

605-0000-431

. Issue 1.6. Date3/2/99

DLP-013

Page 3 of 60 © Copyright Airspan Communications Corporation 1999

CT TX AND RX POWER SET-UP (2.0-2.3GHz AND

2.3-2.5GHz BAND) USING TEST CRU

6. Tools and equipment needed.

Note: This method of setting up the CT should be used if a Level Control Unit is not available.

Item Description Recommended Model Quantity

1 Digital Multimeter Fluke 77 1

2 Test CRU ACC(“Battleship CRU”)

Part No.: 503-0300-001

3 30dB Attenuators; 1W Suhner 6830-19-A 4

6 11dB Variable Attenuator HP8499B 1

7 2 Way Power Divider Narda 4313-2 3

8 50 ohm Termination 1W Suhner 65 SMA-50-0-1 1

9 50 ohm Termination 15W Suhner 6515.17.A 1

10 Adaptor; N-SMA Suhner 33N-SMA-50-1 2

11 Adaptor; N-SMA Suhner 31N-SMA-50-1 1

12 Adaptor; Female-Female Suhner 32 SMA-50-0-1 1

13 Co-ax Cables Suhner Sucoflex 104; 0.5m 5

Suhner Sucoflex 104; 4.0m 2

14 RF Power Meter Marconi 6970 1

15 Power Sensor Marconi 6932 1

7. Set-up Procedure

STEP PROCEDURE

Observe full ESD precautions.

1. System Soak The system must be switched on for at least 2 hours to ensure that it is fully

warmed up before proceeding any further. To minimise the down time the test equipment can

be prepared during this time ready for testing.

2. Preparation

a) Disconnect the Sitespan cables from the 25 way EM/Sitespan port on the modem

backplane