Carrier 38TXA Guide Betriebsanweisung PDF herunterladen (Seite 98)

98 Chapter 2

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

Test Descriptions

TEST_46 - CPD Talk Time

Description

This test measures the mobile station battery life/talk time by

simulating the battery load conditions experienced in a typical system.

1. Before a call is started, two questions are asked:

“Test urban topography or suburban topography?”

& “Loopback data mode or echo data mode?”

Where both questions are answered by pressing the appropriated

USER key K1 or K2. The first question determines which mobile

station transmit power statistics will be used during the test as

defined by CDG Stage 4 Optional System performance Tests

Revision 2.0. The second question determines which service option

and data type or data rate in the CDMA CALL CONTROL screen

will be used. Selecting loopback data mode sets Service Option 2 if

parameter 19. RT Rate Set Selection [0=9600 1=14400] is set to 0

(rate set = 9600) or Service Option 9 if parameter 19. RT Rate Set

Selection [0=9600 1=14400] is set to 1(rate set =14400). It also sets

the data rate to ‘random’ which statistically spends an equal amount

of time at each of the four data rates (about 47% on 53% off).

Selecting echo data mode sets Service Option 1 if parameter 19. RT

Rate Set Selection [0=9600 1=14400] is set to 0 (rate set = 9600) or

Service Option 32768 if parameter 19. RT Rate Set Selection

[0=9600 1=14400] is set to 1 (rate set = 14400)). It also sets the data

type to ‘echo’ where parameter 10. CPD Echo Delay [0, 2 or 5]

(Seconds) sets the echo delay. This allows the user to couple custom

voice data into the mobile for voice echo.

NOTE

Parameter 10. CPD Echo Delay [0, 2 or 5] (Seconds) is used if you have

a Agilent 8924C or Agilent 8924E with firmware A.02.03 or later.

2. The correct type of service option call as defined in step 1 above is

attempted, unless that type of 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 link power is then cycled through a statistical profile to

simulate actual system use.The Sector A power level is displayed at

each new power level.

4. This is continued until the mobile station ends the call and the test

software detects an GPIB interrupt to determine when the connected

state is false.

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