Atec RohdeSchwarz-SMW200A - Manual (Page 17)

Version 01.02, September 2013
Rohde & Schwarz R&S ® SMW200A Vector Signal Generator 17
Modulation sources for analog modulation
Internal modulation generator
Shape sine
Frequency range 0.1 Hz to 1 MHz
Resolution of setting 0.1 Hz
Frequency uncertainty < 7 × 10 –7 Hz + relative deviation of
reference frequency × LF generator
frequency (nom.)
Frequency response up to 1 MHz 0.02 dB (meas.)
Distortion f < 100 kHz,
at R
L
> 50 Ω, level (V
EMF
) < 1 V
< 0.1 %
Multifunction generator (R&S ® SMW-K24 option)
If two RF paths are installed (signal paths A and B), the multifunction generator can be used either on signal path A or B with one
R&S
® SMW-K24 option. For the multifunction generator to be used on signal paths A and B simultaneously, two R&S ® SMW-K24 must
be installed.
The multifunction generator option (R&S ® SMW-K24) consists of three function generators that can be set independently. Two of the
three signal sources can be added with different weighting. The total voltage is limited by the maximum output voltage.
Sources LF generator 1/2 sine, pulse, triangle, trapezoid
noise generator noise amplitude distribution :
Gaussian, equal
Frequency range sine 0.1 Hz to 10 MHz
pulse, triangle, trapezoid 0.1 Hz to 1 MHz (displayed value)
noise bandwidth 100 kHz to 10 MHz
Resolution of setting sine 0.1 Hz
pulse, triangle, trapezoid 10 ns
noise bandwidth 100 kHz
Frequency uncertainty < 7 × 10 –7 Hz + relative deviation of
reference frequency × LF generator
frequency (nom.)
Frequency response sine, up to 1 MHz 0.02 dB (meas.)
sine, up to 10 MHz 0.02 dB (meas.)
Distortion f < 100 kHz, at R
L
> 50 Ω, level (V
EMF
) 1 V < 0.1 %
LF output
Monitoring of resulting modulation signal
for AM, FM, φM
Source LF generator 1, LF generator 2, external 1,
external 2, noise generator
Output voltage V
p
at LF connector, open circuit voltage EMF
Setting range 2 mV to 2 V
Setting resolution 1 mV
Setting accuracy at 1 kHz < (1 % of reading + 1 mV)
Output impedance 50 Ω
DC offset –3.6 V to +3.6 V