Atec Rohde-Schwarz-SMIQ Series - Manual (Page 9)

Vector Signal Generator R&S SMIQ – Specifications 9
Baseband filter
Each filter can be used with any type
of modulation.
Exception: GMSK/GFSK only with
Gaussian baseband filter
√cos (α = 0.1 to 0.99),
cos (
α = 0.1 to 0.99), resolution 0.01
Gauss, B x T = 0.15 to 2.5, resolution 0.01
GaussLin, B x T = 0.3
Bessel, B x T = 1.25 and 2.5/ IS-95 with or without equalizer /
special filter for WCDMA, APCO C4FM / special filter for TETRA /
split phase, B x T = 0.15 to 2.5 / rectangular
Filter modes low EVM: for minimum error vector
low ACP: for minimum adjacent-channel power
ASK
Symbol rate
Modulation depth
100 Hz to 18 MHz 11 ) , max. 5 MHz
0% to 100%
FSK
Modulation modes
2FSK, 4FSK, 4FSK APCO, GFSK
Symbol rate 100 Hz to 7.5 MHz 11 )
Shift
Resolution (0.1 to 100) x f
symb
, max. 5 MHz
<0.5%
Deviation error, rms value for shift 200 Hz to 650 kHz,
symbol rate
<1.3 Msymbol/s, filter √cos or cos with
α = 0.25 to 0.7 or Gauss with B x T = 0.2 to 0.7 <1.3%
GMSK
Bit rate
100 Hz to 7.5 MHz 11 )
Modulation phase error with PRBS data,
up to 1 Mbit/s, rms value
Peak value <1°
<3°
PSK
Modulation modes
BPSK, QPSK, OQPSK, QPSK (IS-95), OQPSK (IS-95), QPSK (ICO),
QPSK (INMARSAT),
π/4DQPSK, π/4QPSK, 8PSK, 8PSK EDGE
Symbol rate 100 Hz to 18 MHz 11 )
Error vector magnitude, rms for filter √cos, cos, IS-95,
WCDMA
up to 200 ksymbol/s, α ≥0.25
up to 1.5 Msymbol/s, α ≥0.25
up to 3 Msymbol/s, α ≥0.25
>3 Msymbol/s, α ≥0.25
<1.2%
<2%
<3%
typ.
<3%
TETRA ACP
f = (380 to 470) MHz, (915 to 988) MHz, level
≤8 dBm PEP, low distortion output mode
Offset 25 kHz
Offset 50 kHz ≤–71 dB, –74 dB typ.
≤–76 dB, –80 dB typ.
QAM
Modulation modes
16QAM, 32QAM, 64QAM, 256QAM
Symbol rate 100 Hz to 18 MHz 11 )
Error vector magnitude, rms with 16QAM for filter
√cos, cos, IS-95, WCDMA
up to 1 Msymbol/s, α ≥0.25
up to 3 Msymbol/s, α ≥0.25
>3 Msymbol/s, α ≥0.25
<2%
<3%
<3% typ.