Agilent Technologies E8285A manual Data Type, Selects Prbs

Chapter 4, Description of Fields

Fields

Syntax

:DSPecifier <’><STD/BITS><’>

:DSPecifier?

Example

OUTPUT 714;"CALLP:DSP?"

OUTPUT 714;"CALLP:DSP ’STD’"

ENTER 714;Build_method$

Screens Where Field is Present

CALL BIT

Data Type

This field selects the data type. This field appears only when Traffic Data

Mode is set to Svc Opt 1, Svc Opt 3, or 32768.

•PRBS - a pseudorandom bit sequence.

•Echo - a reformatted and returned traffic packet (originated by the MSUT, received and reformatted by the Test Set, then returned to the MSUT).

•1 kHz Tone - a mathematically generated 1 kHz sine wave fed through a voice coder by simulation software.

•400Hz - a vocoded 400 Hz tone sent as the forward traffic data.

•Chirp - a vocoded chirp, with a duration of approximately 3 seconds, sent on the forward traffic channel. The Chirp repeats after about 0.5 seconds delay.

GPIB Example

“CDMA:CALL:TRAFfic:DATA:TYPE ‘PRBS’“

selects PRBS.

Operating Considerations

The 1 kHz Tone, 400 Hz, and audio Chirp require the mobile station to have an IS- 96-A vocoder. Some mobile stations will distort the 1 kHz tone after a few seconds.

Screens Where Field is Present

CDMA CALL CONTROL

CDMA TRANSMITTER POWER RANGE TEST

CDMA CELLULAR MOBILE RECEIVER TEST

CDMA CELLULAR MOBILE TRANSMITTER TEST

CDMA AUTHENTICATION

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