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N:\mkt\MANUALS\HP8924C\APPMOD\BOOK\chapters\amcproc.fb
Chapter 9, 264 Using the Analog Call Processing Subsystem
Using the CALL CONTROL Screen to Test Call Processing Functions
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Using the CALL CONTROL Screen to Test Call Processing Functions
The CALL CONTROL screen provides multiple functions for testing a mobile
station. The following sections describe how to:
Conditioning the Test Set for Call Processing
Perform the following steps when first entering the Call Processing Subsystem
(that is, the first time the CALL CONTROL screen is selected during a
measurement session).
c
Zero the RF Power Meter.
d
Select the
RF GEN
from the
To Screen
menu.
e
Set the
Amplitude
field to off (use the ON/OFF key). This prevent cross-
coupling into the power detector while zeroing the power meter.
f
Select
CALL CNTL
from the
To Screen
menu.
g
Select
CALL CNFG
from the
To Screen
menu.
h
Disconnect any cables from the RF IN/OUT port on the front panel of the Test Set.
i
Select the
TX Pwr Zero
field.
j
Select the
RF Gen
from the To Screen menu.
k
Set the
Amplitude
field to On.
There are two reasons for zeroing the RF power meter:
•
When any Call Processing Subsystem screen is displayed (except the ANALOG
MEAS screen) and the Call Processing Subsystem is in the connected state
(
Connect
annunciator is lit), the Test Set constantly monitors the mobile station’s
transmitted carrier power. If the power falls below 0.0005 Watts, the error message
RF Power Loss indicates loss of Voice Channel
will be displayed
and the Test Set will terminate the call and return to the active state. Zeroing the
power meter cancels any inherent dc offsets that may be present within the power
meter under zero-power conditions. This ensures that the Test Set makes the correct
decisions regarding the presence of the mobile stations’s RF carrier.
•
Zeroing the power meter establishes a 0.0000 W reference for measuring the mobile
station’s RF power at the RF IN/OUT port. This ensures the most accurate RF
power measurements of the mobile station’s RF carrier at different power levels.
Содержание HP 8924C
Страница 21: ...Contents 21 N mkt MANUALS HP8924C APPMOD BOOK APPMOD TOC Table of Contents Index 351 ...
Страница 22: ...Contents 22 N mkt MANUALS HP8924C APPMOD BOOK APPMOD TOC ...
Страница 51: ...51 N mkt MANUALS HP8924C APPMOD BOOK chapters amcall fb Chapter 2 Setting Up a Call 2 Setting Up a Call ...
Страница 71: ...71 N mkt MANUALS HP8924C APPMOD BOOK chapters amrcvrt fb Chapter 3 CDMA Receiver Tests 3 CDMA Receiver Tests ...
Страница 139: ...139 N mkt MANUALS HP8924C APPMOD BOOK chapters amtxtst fb Chapter 4 CDMA Transmitter Tests 4 CDMA Transmitter Tests ...
Страница 199: ...199 N mkt MANUALS HP8924C APPMOD BOOK chapters amhoff fb Chapter 5 CDMA to Analog Handoff 5 CDMA to Analog Handoff ...
Страница 317: ...317 N mkt MANUALS HP8924C APPMOD BOOK chapters amsrq fb Chapter 10 Controlling Program Flow 10 Controlling Program Flow ...