User`s guide

80 Chapter 2

S:\agilent\83217\OPT001\BOOK\CHAPTERS\tdscrip.fm

Test Descriptions

TEST_36 - TXD Maximum RF Output Power

Description

This test measures the maximum RF output power that the mobile

station transmits.

1. The Cell Site Configuration screen is set up to send the parameters

in the Access Parameters Message that are specified in EIA/TIA

IS-98 for this test.

2. A Service Option 2 (or 9 if parameter 19. RT Rate Set Selection

[0=9600 1=14400] is set to 1) call is attempted, unless a Service

Option 2 call is already connected. If the MSUT has not registered,

the call attempt may be unsuccessful and the error message “Failed

to establish a call in test <>” will be displayed. To correct this

problem, perform the CPD Registration test.

3. The forward channel power is adjusted to -104 dBm.

4. The Test Set is programmed to send continuous “always up” power

control bits at full data rate. This series of power control bits will

increase the MSUT’s power level from its open loop estimate to its

maximum transmitted RF power.

5. An Average Power measurement is made while the “always up”

power control bits are being sent.

6. The TXD Antenna Gain parameter is retrieved and used to

determine the upper and lower test limits.

7. The following information is printed to the TESTS (IBASIC

Controller) screen:

• TXD Max RF Output Power <Average Power measurement>

Refer to the Agilent 8924C Reference Guide for information about the

Open Loop power control mode, see the Closed Loop Pwr Cntl field

description.

Refer to the Agilent 8924C Reference Guide for information about the

Input Atten field and Hold mode.

Output power can be expressed in dBm or watts by appropriately

setting parameter 36. TX Units for Pwr Meas [0=dBm 1=Watts].