SMW200A_specs_en_3606-8037-22_v2700.pdf - 第28页
Version 27.00, October 2024 28 Rohde & Schwar z R&S ® SMW200A Vec tor Signal Generator Measured relative phase bet ween two LO coupled R&S ® SMW200A RF pa ths versus time, carrier frequen cy = 2 GHz, level = …
Version 27.00, October 2024
Rohde & Schwarz R&S
®
SMW200A Vector Signal Generator 27
Phase coherence (R&S
®
SMW-B90 option)
The R&S
®
SMW-B90 option can be installed once, but can be used with all installed RF paths. It provides phase-coherent RF outputs
for the two RF paths or two or more instruments.
The option cannot be installed if an R&S
®
SMW-B1044O, R&S
®
SMW-B2044O, R&S
®
SMW-B1056O or R&S
®
SMW-B1067O option
is installed.
LO coupling modes
This mode corresponds to internal
LO operation in path A and path B.
A, B internal
This mode corresponds to internal
LO operation in path A, and LO of path B
is coupled to path A.
A internal,
A → B coupled
This mode corresponds to external
LO operation at the LO IN connector in
path A and internal LO operation in
path B.
A external,
B internal
This mode corresponds to external
LO operation at the REF/LO IN connector
in path A and path B.
A external,
A → B coupled
REF/LO OUT states
The active LO signal of path B can be
routed to the LO OUT connector (in order
to couple two or more instruments).
on/off
Input of phase coherence signal
Connector type
LO IN on rear panel
SMA female
Input impedance
50 Ω (nom.)
Input level range of external LO signal
7 dBm to 13 dBm
Frequency range of external LO signal
for RF setting 200 MHz < f ≤ 6.5 GHz
1.0 · f
for RF setting 6.5 GHz < f ≤ 13 GHz
0.5 · f
for RF setting 13 GHz < f ≤ 26 GHz
0.25 · f
for RF setting 26 GHz < f ≤ 44 GHz
0.125 · f
R&S
®
SMW-B1056, R&S
®
SMW-B1056N, R&S
®
SMW-B1067, R&S
®
SMW-B1067N
frequency options
for RF setting 43 GHz < f ≤ 65 GHz
0.1 · f
for RF setting 65 GHz < f ≤ 72 GHz
0.05 · f
Output of phase coherence signal
Connector type
LO OUT on rear panel
SMA female
Output impedance
50 Ω (nom.)
Output level range of internal LO signal
7 dBm to 13 dBm
Frequency range of internal LO signal
for RF setting 200 MHz < f ≤ 6.5 GHz
1.0 · f
for RF setting 6.5 GHz < f ≤ 13 GHz
0.5 · f
for RF setting 13 GHz < f ≤ 26 GHz
0.25 · f
for RF setting 26 GHz < f ≤ 44 GHz
0.125 · f
R&S
®
SMW-B1056, R&S
®
SMW-B1056N, R&S
®
SMW-B1067, R&S
®
SMW-B1067N
frequency options
for RF setting 43 GHz < f ≤ 65 GHz
0.1 · f
for RF setting 65 GHz < f ≤ 72 GHz
0.05 · f
Version 27.00, October 2024
28 Rohde & Schwarz R&S
®
SMW200A Vector Signal Generator
Measured relative phase between two LO coupled R&S
®
SMW200A RF paths versus time, carrier frequency = 2 GHz, level = –10 dBm
(the lower curve/right vertical axis indicates the temperature variation)
Measured relative phase between two LO coupled R&S
®
SMW200A RF paths versus time, carrier frequency = 40 GHz, level = –10 dBm
(the lower curve/right vertical axis indicates the temperature variation)
-0.20
-0.10
0.00
0.10
0.20
0.30
0.40
0.50
0.60
0.70
0.80
-1.00
-0.80
-0.60
-0.40
-0.20
0.00
0.20
0.40
0.60
0.80
1.00
0 500 1000 1500 2000 2500 3000 3500
Relative temperature /
°C
Relative phase /
°
Time / s
-0.20
-0.10
0.00
0.10
0.20
0.30
0.40
0.50
0.60
0.70
0.80
-1.00
-0.80
-0.60
-0.40
-0.20
0.00
0.20
0.40
0.60
0.80
1.00
0 500 1000 1500 2000 2500 3000 3500
Relative temperature /
°C
Relative phase /
°
Time / s
Version 27.00, October 2024
Rohde & Schwarz R&S
®
SMW200A Vector Signal Generator 29
Simultaneous modulation
In the same RF path.
● = compatible, – = incompatible
○ = compatible with limitations (ALC mode = off)
Amplitude
modulation
Frequency
modulation
Phase modulation
Pulse modulation
I/Q modulation
Amplitude
modulation
●
●
○
–
Frequency
modulation
●
–
●
●
Phase modulation
●
–
●
●
Pulse modulation
○
●
●
○
I/Q modulation
–
●
●
○
Two-path instruments: Frequency modulation and phase modulation are not compatible with I/Q modulation in the other RF path.
For simultaneous I/Q and frequency modulation, or simultaneous I/Q and phase modulation, the instrument must be equipped with a
two-path signal routing and baseband main module (R&S
®
SMW-B13T or R&S
®
SMW-B13XT option).
Instruments equipped with R&S
®
SMW-B2031, R&S
®
SMW-B2044, R&S
®
SMW-B2044N or R&S
®
SMW-B2044O in RF path B:
Amplitude modulation, frequency modulation and phase modulation are only possible in RF path A. When activating frequency or
phase modulation in RF path A, RF path B is switched off.