Agilent Technologies 8922S Manual de usuario descargar pdf (Pagina 3)

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Switch on one of Agilent Technologies’ GSM test sets

and you’ll find that your mobile finds service

immediately. Now make a call and you’re up and

running; ready to perform all the key transmitter

and receiver measurements.

Built into every test set you’ll find:

Transmitter Tester

Transmitter measurements such

as power versus time, modula-

tion phase and frequency error,

and burst timing are made using

a fast DSP analyzer. There’s also

an accurate peak power meter

to perform the GSM average Tx

power measurement, taking sam-

ples only during the active part

of the burst.

Receiver Tester

Receiver testing is done using

an accurate 0.3 GMSK source.

The wide dynamic range allows

for low-level sensitivity measure-

ments and high power tests

to check for receiver saturation.

Mobile receiver sensitivity is

measured by making bit-error-

rate measurements on Class Ia,

Ib, and II bits in either raw or

residual form.

Spectrum Analyzer

The optional spectrum analyzer

completes the array of GSM

measurements which can be

made. It provides high dynamic

range pulse on/off ratio measure-

ments and output RF spectrum

tests. The spectrum analyzer

also makes an excellent diagnos-

tic tool for tracing signals and

finding problems.

Tool Kit

The full-featured tool kit includes

a power meter, CW RF synthesizer,

audio synthesizer, frequency

counter, DVM, audio analyzer,

oscilloscope, and DSP analyzer.

These tools can be configured to

measure just about any signal a

GSM phone can produce, whether

on a call or in test-mode.

Base Station Emulator

The GSM base station emulator

creates a test network to which

the mobile can camp and make

calls. The emulator is capable of

causing a “simple camp” so that

receiver and transmitter func-

tions can be verified separately.

A speech coder is present to

allow functional voice testing.

A variety of basic call processing

features test the mobile as if it

were in a real network. These

features include hopped traffic

channels, call origination and

termination (both mobile and

base station), hand-overs, chan-

nel assignments, Tx power con-

trol commands, and a choice of

control channel configurations.

Automatic Software

The optional automatic test soft-

ware is easy to use, fast and sim-

ple to configure. With the flexi-

bility to allow test sequences to

be created and saved in minutes,

automatic test software person-

alizes the test set for each part

of the incoming inspection or

repair process.

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