Agilent Technologies 8922S Manual do Utilizador descarregar pdf (Página 6)

0.3 GMSK modulation

After one timeslot, 577 ms, from an isolated RF generator trigger

in the GSM frequency bands.

Phase error: ≤ 1° rms.

Peak phase error: ≤ 4° peak.

Frequency error: ± [0.02 ppm (18 Hz) + reference

accuracy], for normal bursts.

Typically ± [0.03 ppm (27 Hz) +

reference accuracy], for RACHs.

Amplitude flatness: ± 0.25 dB peak.

Clock input (8922M test set only)

Frequency: 270.833 kHz ± 2 Hz (relative to

reference).

Level: TTL.

Data input (8922M test set only)

Format: Non differentially encoded input.

Level: TTL.

Supplemental characteristics

After three timeslots, 1.73 ms, from an isolated RF generator trig-

ger in the GSM frequency bands.

Phase error: ≤ 0.5° rms.

Peak phase error: ≤ 2.0° peak.

Frequency error: ± [0.01 ppm (9 Hz) + reference

accuracy] for normal bursts.

Typically ± [0.02 ppm (18 Hz) +

reference accuracy] for RACH

bursts.

Pulse modulation

Input levels (8922M test set only): TTL.

Rise/fall time (10% to 90%): ≤ 5 µs.

Supplemental characteristics

On/off ratio: > 80 dB.

30 dB pulse modulation (8922M test set only)

All timeslots 30 dB higher than desired/active timeslot, to test

adjacent timeslot rejection.

Input levels: TTL.

Rise/fall time (10 to 90%): ≤ 5 µs.

AM for level control (8922M test set only)

For output levels ≤ +1 dBm at aux RF out or ≤ -19 dBm at RF in/out.

Supplemental characteristics

Input

Range: -1.0V to +0.6V.

Impedance: 600 ohm nominal, dc coupled.

Sensitivity: 100% AM per volt, nominal.

Calibration: 0 Vdc input produces calibrated

output from the RF generator.

Rise/fall time (10 to 90%): ≤ 10 µs.

RF analyzer specifications

Frequency

Range: 10 MHz to 1 GHz.

Resolution: 1 Hz.

Hop mode

Resolution: 100 kHz.

Offset frequency: ≤ 50 kHz.

Offset resolution: 1 Hz.

RF in/out SWR: < 1.5:1.

Supplemental characteristics

Frequency overrange: To 1015 MHz.

Offset resolution: 500 Hz for FM demodulation out.

CW RF frequency measurement

Range: 10 MHz to 1 GHz.

Level range

RF in/out: -6 to +41 dBm.

Aux RF in: -36 to +20 dBm.

Input frequency setting range: ± 500 kHz.

Accuracy: ± (1 Hz + reference accuracy).

Supplemental characteristics

Minimum resolution: 1 Hz.

CW RF power measurements (RF in/out only)

Range: 90 MHz to 1 GHz.

Level range: -5 to +41 dBm.

Input frequency setting range: ± 500 kHz.

Accuracy: (+4 to +41 dBm) ± 0.5 dB ±

noise effects (0.2 mW).

Supplemental characteristics

Minimum resolution: 0.01 dB.

Accuracy: (-5 to +4 dBm) ± 0.5 dB ± noise

effects (0.2 mW).

Peak transmitter carrier power measurement

RF in/out only. After one timeslot, 577 µs, from an isolated receiv-

er hop trigger in the GSM bands.

Range: 90 MHz to 1 GHz.

Level range: -5 to +41 dBm.

Input frequency setting range: ± 10 kHz.

Input level setting range: ± 3 dB.

Accuracy: (+4 to +41 dBm) ± 0.6 dB ±

noise effects (0.2 mW).

Supplemental characteristics

Minimum resolution: 0.2 dB.

Accuracy: (-5 to +4 dBm) ± 0.6 dB ± noise

effects (0.2 mW).

1. GSM frequency bands are 880 to 915 MHz and 925 to 960 MHz.

1 2 3 4 5 6 7 8 9 10 11 ... 17 18

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