Carrier 38TXA Guide Guía de usuario descargar pdf (Pagina 66)

66 Chapter 2

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

Test Descriptions

TEST_29 - RXA MRI

Description

This test sweeps the level of the RF carrier generated by the test

system on a forward voice channel. The RF level is stepped from a

higher level to a lower level where the step size is set by the user via the

parameter table. The start and stop RF levels are hardcoded to -50 dBm

and -110 dBm. At each level step, the MRI Parameter Message is sent

to the MSUT with the RSSI and BER threshold fields set to zero. This

induces the MSUT to report the current status of its RSSI and BER

measurements via the reverse voice channel. These RSSI and BER

values are then displayed.

Background

MRI stands for Mobile Reported Interference, RSSI stands for Received

Signal Strength Indicator, and BER stands for Bit Error Rate. NAMPS

phones are able to report RSSI and BER values to the base station on

command. The BER pertains to the signaling used on narrow voice

channels. This test can only be run on a narrow voice channel on an

NAMPS mobile unit.

Pass/Fail Limits Used

• None

Parameters Used

• 1. CPA Control Channel [1-799 or 991 -1023]

• 2. CPA DSAT Vector

• 3. CPA Enter Ph# [0=If Needed,1=Always,Here]

• 4. CPA MIN From? [0=RECC,1=All 0’s,2=Phone #]

• 5. CPA Prt RECC RVC Data [0=no 1=yes 2=fail]

• 22. RX RF Level for Signaling (dBm)

• 26. RXA MRI Step Level (dBm)

• 49. TXA TS Atten for Signaling [0, 20, 40] (dB)

1 2 ... 61 62 63 64 65 66 67 68 69 70 71 ... 213 214

Sin comentarios

Carrier 38TXA Guide Guía de usuario Pagina 66