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Verifying Performance
Agilent Technologies 8922M/S Specifications
Spectral Purity
0.3 GMSK Modulation
After one timeslot, 577µs, from an isolated RF Generator Trigger in the GSM
Frequency bands.
Pulse Modulation
Spurious Signals (for ≤+1 dBm output level at Aux RF Out or ≤−19 dBm output level at RF In/Out.
Harmonics: <
−25 dBc
Non-harmonics: <
−50 dBc, >5 kHz offset from carrier
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 (Agilent 8922M only)
Frequency 270.833 kHz
± 2 Hz (relative to reference).
Level
TTL
Data Input (Agilent 8922M only)
Format
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
±[0.01ppm (9 Hz) + reference accuracy] for normal bursts.
±[0.02ppm (18 Hz) + reference accuracy] for RACH bursts.
Input Levels (Agilent 8922M only) TTL
Rise/Fall Time (10% to 90%)
≤5 µs
Supplemental Characteristics:
On/Off Ratio
>80 dB