Atec RohdeSchwarz-SMW200A - Manual (Page 22)

Version 01.02, September 2013
22 Rohde & Schwarz R&S ® SMW200A Vector Signal Generator
Bias voltage (single-ended and differential) EMF –3.6 V to +3.6 V 7
Resolution 2 mV
Uncertainty 1 % + 4 mV
Offset voltage
Differential EMF –300 mV to +300 mV
Resolution 0.1 mV
Uncertainty 1 % + 0.1 % × bias voltage + 1 mV
Differential signal balance at R
L
= 50 Ω, output voltage > 0.5 V (V
p
)
Magnitude up to 10 MHz < 0.2 dB, 0.05 dB (meas.)
up to 80 MHz 0.2 dB (meas.)
Frequency response 8 at R
L
= 50 Ω, output voltage > 0.5 V (V
p
)
Magnitude up to 10 MHz 0.02 dB (meas.)
up to 80 MHz 0.03 dB (meas.)
Envelope tracking (R&S
®
SMW-K540 option)
With this option, the analog I/Q outputs can be used to generate an analog signal corresponding to the envelope of the I/Q signal to
test envelope tracking modulators..
This option can be installed once if the instrument is equipped with the R&S ® SMW-B13 option. If the instrument is equipped with the
R&S ® SMW-B13T option, envelope tracking can be used either on signal path A or B with one R&S ® SMW-K540 option. For envelope
tracking to be used on signal paths A and B simultaneously, two R&S ® SMW-K540 must be installed.
For each R&S ® SMW-K540 option to be installed, a R&S ® SMW-K16 option must be installed, and the instrument must be equipped
with at least one baseband generator (R&S ® SMW-B10 option)
General
Envelope voltage adaption
auto, manual
Output type single-ended, differential
Bias voltage see section “Differential analog I/Q outputs”
Offset voltage see section “Differential analog I/Q outputs”
Envelope to RF delay
Setting range –500 ns to +500 ns
Setting resolution 1 ps
Shaping off, linear, from table, polynomial,
dethroughing
Envelope voltage adaption mode auto
Power Amplifier Input Power P
in
Setting range –145.00 dB to +30.00 dB
Setting resolution 0.01 dB
Power Amplifier Supply Voltage V
cc
see “Output voltage “ in section “Differential analog I/Q outputs”
DC Modulator gain 0.00 dB to +10.00 dB
Envelope voltage adaption mode manual
Pre-gain
Setting range –20.00 dB to 0.00 dB
Setting resolution 0.01 dB
Post-gain
Setting range –3.00 dB to +20.00 dB
Setting resolution 0.01 dB
Clipping level upper and lower limit can be set
separately 0 % to 100 %
Maximum output voltage see “Output voltage “ in section “Differential analog I/Q outputs”
7 The magnitude of the sum of output voltage and bias voltage must not exceed 4 V.
8 “Optimize internal I/Q impairments for RF output” switched off.