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Test Descriptions

TEST_37 - TXD Minimum Controlled Output Power

TEST_37 - TXD Minimum Controlled Output

Power

Description

This test measures the minimum controlled RF output power of the

mobile station. The minimum controlled output power is the output

power, measured at the mobile station antenna connector, when both

closed loop and open loop power control indicate minimum output.

1. 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.

2. The forward channel power is set to -25 dBm.

3. The Test Set’s “call drop” timer is disabled so that when “all down”

power control bits are sent to the MSUT, the call is not dropped by

the Test Set

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

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

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

the minimum transmitted output power.

5. A Channel Power measurement is made while the “always down”

power control bits are being sent.

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

determine the upper test limit.

7. The following measurement result is printed to the TESTS (IBASIC

Controller) screen:

• TXD Min RF Output Power <Channel 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.

Pass/Fail Limits Used

• 42. TXD Maximum RF Output Power (dBm)

1 2 ... 77 78 79 80 81 82 83 84 85 86 87 ... 213 214

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Carrier 38TXA Guide Guía de usuario Pagina 82