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Chapter 2 79

Test Descriptions

TEST_35 - TXD Closed Loop Power Control

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

power control bits at full data rate.

10.The Test Set’s input attenuator is set to its minimum value (0 dB).

11.A Channel Power measurement is made while the continuous

“always down” power control bits are being sent.

12.The Closed Loop Down Range value is calculated and displayed. The

Closed Loop Down Range value is calculated by taking the difference

between the Channel Power measurement taken while “down” power

control bits were being received by the MSUT, and the reference

measurement made on the MSUT’s open loop estimate from step 2.

13.The procedure, beginning with Step 2, is repeated for half, quarter,

and eighth rate data.

The following information is displayed as testing is performed:

• Closed Loop Power Control @ Full Rate <Up Range and Down

Range>

• Closed Loop Power Control @ Half Rate <Up Range and Down

Range>

• Closed Loop Power Control @ Quarter Rate <Up Range and Down

Range>

• Closed Loop Power Control @ Eighth Rate <Up Range and Down

Range>

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

• 40. TXD Closed Loop Power Control Range (dB)

Parameters Used

• 9. CPD BID Number

• 11. CPD NID Number

• 12. CPD SID Number

• 18. RT Prot Std [0=95 1=95A 2=TSB74 3=ARIB]

• 19. RT Rate Set Selection [0=9600 1=14400]

• 22. RX RF Level for Signaling (dBm)

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Carrier 38TXA Guide Guía de usuario Pagina 79