Agilent Technologies 8922S Betriebsanweisung PDF herunterladen (Seite 66)

System Speciﬁcations

0.3 GMSK Modulation Speciﬁcations

0.3 GMSK Modulation Specifications

After one timeslot, 577 µs, from an isolated RF generator trigger in the GSM

frequency bands.

Error

Phase error: ≤ 1˚ rms

Peak phase error: ≤ 4˚ peak

Frequency error (880 to 960 MHz): ± [0.02 ppm (18 Hz) + reference

accuracy], for normal bursts

Typically ± [0.03 ppm (27 Hz) +

reference accuracy], for RACHs

Frequency error (1880 to 1990 MHz): ± [0.01 ppm (22 Hz) + reference

accuracy], for normal bursts

Typically ± [0.02 ppm (32 Hz) +

reference accuracy], for RACHs

Amplitude ﬂatness: ± 0.25 dB peak

Clock input Frequency

(Agilent 8922M only):

270.833 kHz ± 2 Hz (relative to

reference)

Level: TTL

Data Input Format (Agilent 8922M

only):

Non differentially encoded input

Level: TTL

Supplemental characteristics

After three timeslots, 1.73 ms, from an isolated RF generator trigger in the GSM

frequency bands

Phase error:

≤ 0.5˚ rms

Peak phase error: ≤ 2.0˚ peak

Frequency error (880 to 960 MHz): ± [0.01 ppm (9 Hz) + reference accuracy]

for normal bursts

Typically ± [0.02 ppm (18 Hz) +

reference accuracy] for RACH bursts

Frequency error (1880 to 1990 MHz): ± [0.005 ppm (9 Hz) + reference

accuracy] for normal bursts

Typically ± [0.01 ppm (18 Hz) +

reference accuracy] for RACH bursts

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

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Agilent Technologies 8922S Betriebsanweisung Seite 66