Level sweep, Spectral purity – Atec Rohde-Schwarz-SMJ100A User Manual
Page 9
Version 05.00, December 2007
R&S
®
SMJ100A Vector Signal Generator
9
Level sweep
Operating modes
digital sweep in discrete steps
automatic, single, step,
external single, external step,
manual, or external trigger
Sweep range
full level range
Step width
logarithmic
0.1 dB to 20 dB per step
range
10 ms to 10 s
Dwell time
resolution 0.1
ms
Spectral purity
unmodulated
level <8 dBm
<–30 dBc
Harmonics
level <13 dBm
typ. <–30 dBc
level >–50 dBm, CW,
vector modulation (full-scale DC input),
>10 kHz offset from carrier and
outside the modulation spectrum
0.3 MHz
≤ f ≤ 200 MHz
<–77 dBc
200 MHz < f
≤ 1500 MHz
<–80 dBc
1500 MHz < f
≤ 3000 MHz
<–74 dBc
f > 3000 MHz
<–68 dBc
850 kHz offset from carrier and
outside the modulation spectrum
0.3 MHz
≤ f ≤ 200 MHz
<–77 dBc
200 MHz < f
≤ 1500 MHz
<–86 dBc
1500 MHz < f
≤ 3000 MHz
<–80 dBc
Nonharmonics
f > 3000 MHz
<–74 dBc
Power supply and mechanically related
nonharmonics
at RF = 1 GHz,
50 Hz to 10 kHz from carrier
<–70 dBc
1500 MHz < f
≤ 3000 MHz
<–74 dBc
Subharmonics
3000 MHz < f
≤ 6000 MHz
<–50 dBc
carrier offset >10 MHz,
measurement bandwidth 1 Hz, CW
20 MHz
≤ f ≤ 200 MHz
<–146 dBc (typ. –149 dBc)
200 MHz < f
≤ 1500 MHz
<–150 dBc (typ. –153 dBc)
1.5 GHz < f
≤ 3 GHz
<–148 dBc (typ. –151 dBc)
f > 3 GHz
<–146 dBc (typ. –149 dBc)
vector modulation with full-scale DC input
20 MHz
≤ f ≤ 200 MHz
<–140 dBc (typ. –143 dBc)
200 MHz < f
≤ 1500 MHz
<–143 dBc (typ. –146 dBc)
1.5 GHz < f
≤ 3 GHz
<–142 dBc (typ. –145 dBc)
Wideband noise
f > 3 GHz
<–140 dBc (typ. –143 dBc)
carrier offset 20 kHz, measurement
bandwidth 1 Hz, unmodulated
20 MHz
≤ f ≤ 200 MHz
<–126 dBc (typ. –130 dBc)
f = 1 GHz
<–129 dBc (typ. –133 dBc)
f = 2 GHz
<–123 dBc (typ. –127 dBc)
f = 3 GHz
<–119 dBc (typ. –123 dBc)
f = 4 GHz
<–117 dBc (typ. –121 dBc)
SSB phase noise
f = 6 GHz
<–113 dBc (typ. –117 dBc)
rms value at f = 1 GHz
300 Hz to 3 kHz
<1 Hz
Residual FM
20 Hz to 23 kHz
<4 Hz
Residual AM
rms value 20 Hz to 23 kHz
<0.02 %