Agilent Technologies 8922S Manual do Utilizador descarregar pdf (Página 4)

Troubleshoot in Test Mode

What if the mobile is unable to find service

and make a call and you can’t find the source of

the problem? With a single key press, the test

set can be put into a special test mode, allowing

unsynchronized mobile operation. The transmit

and receive portion of the mobile can then be

measured separately.

Simplify Mobile Test

SIM (Subscriber Identity Module) cards are avail-

able to simplify mobile test by matching the infor-

mation on the card (IMSI, MCC, MNC) with that

on the test set. They also enable the mobile to be

put into a special loop-back mode to perform the

receiver bit-error-rate test.

Compatibility

If you already own an Agilent 8922S/M or 83220A/E

test set, these can be upgraded to 8922 multiband

test systems. Contact your Agilent representative

for details. You can take advantage of the addi-

tional features without rewriting your production

test code. Code written for the 8922S/M test set is

compatible with the 8922 multiband test systems.

To facilitate traceable testing, the 8922 multiband

test system generally follows the procedures as

outlined in the associated GSM recommendations,

but do not necessarily meet the exact requirements

or cover all ranges, limits, or conditions required

for type testing.

Associated GSM

Specifications

Agilent 8922 Multiband Test System 11.10 Tests

Transceiver spurious emissions

12.1

Tx peak transmitted power 13.3

Tx RF spectrum due to switching

13.4

Tx RF spectrum due to modulation

13.4

Tx amplitude envelope 13.3

(top 30 dB, and -70 dBc point)

Tx phase error and frequency error 13.1

Rx sensitivity 14.2

Rx usable input level range 14.3

Rx co-channel rejection

14.4

Rx adjacent channel rejection 14.5

(same frequency/different timeslot)

(different frequency/same timeslot)

Rx intermodulation rejection

14.6

Rx blocking and spurious response

14.7

1. The 8922 multiband test systems have limited capability for this measurement

(<2 GHz, and limited resolution, bandwidth and spans).

2. The 8922 multiband test systems use a three pole resolution bandwidth filter

to make these measurements.

3. An additional RF source, such as the ESG-D series of signal generators,

is required to make this measurement.

4. An additional CW RF source (frequency range of 100 kHz to 12.75 GHz,

no modulation needed) is required to make this measurement.

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