Atec Tektronix-RSA3000B Bedienungsanleitung PDF herunterladen (Seite 7)

Spectrum Analyzers — RSA3000B Series

Analysis-re la ted

Optional Meas

urement Functions, Standards-based and Ofﬂine Analysis

Description Measurements and Displays

General Purpose Digital

Modulation Analysis

(Option 21)

Mod. Formats: BPSK,

QPSK, π/4 DQPSK,

OQPSK, SOQPSK, 8PSK,

D8PSK,16/32/64/128/256-QAM,

GMSK, GFSK, C4FM,

2ASK, 2FSK, 4FSK, 8FSK,

16FSK, CPM (per MIL STD

188-181C)

Standard support:

Bluetooth, TETRA, P25,

IEEE 802.15.4 OQPSK

(Zigbee)

EVM (RMS, Peak, EVM vs. Time), Magnitude Error (RMS, Peak, Mag Error vs. Time), Phase Error (RMS, Peak, Phase Error vs. Time),

Origin Offset, Frequency Error, Gain Imbalance, Quadrature Error, R ho, Constellation, Symbol Table, Symbol Timing Error, FSK Deviations

and Error, Eye Diagram

PDF: Probability of Occurrence vs. Power Level

AM-AM, AM-PM, 1 dB Compression, Crest Factor

Demodulation Accu racy

Characte

ristic

RSA3300B

Models

RSA3400B

Models

16/64QAMEVMCF=2GHz(typical) 0.9%(at 100kS/s)

0.5% (at 1 MS/s)

1.2% (at 4 MS/s)

2.2% (at 10 MS/s)

0.5% (at 1 kS/s)

0.5% (at 1 MS/s)

0.5% (at 4 MS/s)

0.7% (at 10 MS/s)

QPSK EVM CF = 2 GHz (typical) 0.5% (at 100 kS/s)

0.5% (at 1 MS/s)

1.2% (at 4 MS/s)

2.7% (at 10 MS/s)

0.5% (at 100 kS/s)

0.5% (at 1 MS/s)

0.6% (at 4 MS/s)

0.9% (at 10 MS/s)

Modul

ation Accuracy (typical)

π/4DQPSK Total EVM: 0.65% (95 percentile)

Test Condition: Symbol Rate = 24.3 kHz

Measurement Filter: Root Raised Cosine, alpha = 0.3

Reference Filter: Raised Cosine, alpha = 0.3

Signal Power = –25 dBm

GMSK EVM: 0.94% (95 percentile)

Test Conditions:

Symbol Rate = 270.833 kHz

Gaussian BT = 0.3

Signal Power = –25 dBm

GFSK FSK Error (RMS): 1.01% (95 percentile)

Test Conditions:

Symbol Rate = 1.152 MHz

Gaussian BT = 0.5

Deviation = 288 kHz

Signal Power = –25 dBm

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