Rigol DSG3000 Series Instrukcja Użytkownika Pobierz pdf (Strona 9)

I/Q Modulation (Option IQ-DSG3000)

Modulation source External, internal

Bandwidth.(RF)

External modulation

Baseband (I or Q) Up to 60MHz (nom.)

RF (I + Q) Up to 120MHz (nom.)

Internal modulation

Baseband (I or Q) Up to 30MHz (nom.)

RF (I + Q) Up to 60MHz (nom.)

Carrier suppression

[1]

Carrier frequency range:50MHz ≤ f ≤ 6GHz ≥40dBc (typ.)

Suppression of image sideband

[2]

Modulation bandwidth up to ±10MHz ≥40dBc (typ.)

External I/Q inputs

VSWR <1.5

Full scale input

Internal modulation

EVM

16QAM , root cosine lter (α=0.22), 4MSps

50MHz ≤ f ≤ 3GHz (level≤4dBm) ≤0.7%rms (typ.)

3GHz < f ≤ 6GHz (level≤0dBm) ≤1.2%rms (typ.)

QPSK , root cosine lter (α=0.22), 4MSps

50MHz ≤ f ≤ 3GHz (level≤4dBm)

≤0.7%rms (typ.)

3GHz < f ≤ 6GHz (level≤0dBm) ≤1.2%rms (typ.)

External modulation

EVM CDMA2000/1xEV-D0,1.2288 Mcps, frequency 800 to

900MHz, 1800 to 1900MHz, level≤4dBm

≤ 1.2%, ≤ 0.8% (typ.)

ACPR ≥ 70dB

VrmsQI 5.0

NOTE: [1] [2]The parameter is measured at room temperature. When the temperature is difference from room temperature, the specication will deteriorate.

Frequency offset from carrier (MHz)

Carrier frequency (MHz)

Carrier suppression (dBc)

Suppression of image sideband (dBc)

Measured external IQ bandwidth

Measured suppression of image sideband

Measured carrier suppression

Measured internal IQ bandwidth

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