Agilent Technologies 8922M, S GSM manual Spectral Purity, Pulse Modulation

Verifying Performance

Agilent Technologies 8922M/S Specifications

Spectral Purity

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

0.3 GMSK Modulation

After one timeslot, 577μs, 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 (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.

Pulse Modulation

Input Levels (Agilent 8922M only)

Rise/Fall Time (10% to 90%)

Supplemental Characteristics:

On/Off Ratio

TTL ≤5 μs

>80 dB

3-16