SMU_dat-sw-en.pdf - 第29页

Version 08.00, Januar y 2012 Rohde & Schwarz R&S ® SMU200A Vector Signal Generator 29 modulation, filter, symbol rate and coding in line with standard Predefined settings standards Bluetooth ® 7 , DECT, ETC, GSM,…

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Version 08.00, January 2012
28 Rohde & Schwarz
R&S
®
SMU200A Vector Signal Generator
number 4
level LVTTL
operating modes control list, restart, pulse, pattern, ratio
marker delay (in sample)
setting range 0 to 2
24
– 1
setting range without recalculation 0 to 2000
resolution of setting 0.001
Marker outputs
setting uncertainty < 10 ns
Internal or external via LEVATT input. The signal switches between nominal and
reduced level (without edge shaping). If an internal LEVATT signal is used, the
connector is used as an output.
setting range 0 dB to 60 dB
additional level error in case of reduction
up to 30 dB < 1 dB
Level reduction
up to 50 dB < 3 dB
Internal or external via BURST input. The signal triggers the beginning of a power
ramp. The positive edge starts power ramping from blank to full level, the negative edge
ramping in the opposite direction from full level to blanking. If an internal BURST GATE
signal is applied, the connector is used as an output.
operating range max. 5 MHz
rise/fall time
setting range 0.5 symbol to 16 symbol
resolution 0.1 symbol
Burst
ramp shape cosine, linear
The input impedance and trigger threshold can be set separately for the trigger and the
clock/data inputs.
input impedance 1 k, 50
trigger threshold
setting range 0.00 V to 2.50 V
Trigger/clock/data inputs
resolution 0.01 V
Clock/data outputs level LVTTL
Version 08.00, January 2012
Rohde & Schwarz R&S
®
SMU200A Vector Signal Generator 29
modulation, filter, symbol rate and coding in line with standard
Predefined settings
standards Bluetooth
®
7
, DECT, ETC, GSM,
GSM EDGE, NADC, PDC, PHS, TETRA,
WCDMA 3GPP, TD-SCDMA,
CDMA2000
®
Forward,
CDMA2000
®
Reverse, Worldspace
Modulation errors
deviation 0.2 to 0.7 × symbol rate
Gaussian filter with B × T = 0.2 to 0.7
symbol rate up to 2 MHz < 1.2 %, 0.25 % (typ.)
Deviation error with 2FSK, 4FSK
symbol rate up to 10 MHz 0.75 % (typ.)
Gaussian filter with B × T = 0.2 to 0.7
bit rate up to 2 MHz < 0.4°, 0.15° (typ.)
Phase error with MSK
bit rate up to 10 MHz 0.3° (typ.)
cosine, root cosine filter with α = 0.2 to 0.7
symbol rate up to 5 MHz < 0.8 %, 0.2 % (typ.)
EVM with QPSK, OQPSK, π/4-DQPSK,
8PSK, 16QAM, 32QAM, 64QAM
symbol rate up to 20 MHz 0.7 % (typ.)
Measured EVM versus symbol rate.
7
The Bluetooth
®
word mark and logos are registered trademarks owned by Bluetooth SIG, Inc. and any use of such marks by Rohde & Schwarz is
under license.
Version 08.00, January 2012
30 Rohde & Schwarz
R&S
®
SMU200A Vector Signal Generator
Modulation uncertainty for main standards
Typical values
Standard GSM EDGE WCDMA
3GPP
(1DPCH)
cdmaOne
Reverse
DECT TETRA NADC PDC IEEE
802.11a
800 to 900 824 to 894 810 to 956 2400 to
2485
Frequency
in MHz
400 to
2000
400 to
2000
1800 to
2200
1850 to 2000
1880 to
1990
380 to
480
1850 to
2000
1429 to
1501
5150 to
5825
EVM in % – 0.2 0.3 0.2 – 0.2 0.2 0.2 0.4
Phase error
in °
0.15 – – – – – – – –
Deviation error
in kHz
– – – – 0.5 – – – –
Channel
spacing
200 kHz 200 kHz 5 MHz 1.25 MHz 1.728 MHz 25 kHz 30 kHz 25 kHz –
Adjacent channel power ratio (ACPR) in dB
8
In adjacent
channel
−37 −38 −72
9
−85
10
– −74
11
−34 −74 −42
at 11 MHz
In alternate
channel
−71 −71 −78
12
−89
13
– −77
11
−80 −82 −64
at 20 MHz
In 2nd alternate
channel
−85 −85 – −95
14
– – – – −66
at 30 MHz
Signal performance for digital standards
GSM/EDGE with R&S
®
SMU-K40 option
Burst on/off ratio > 100 dB
MSK, Gaussian filter B × T = 0.3
RMS < 0.4°, 0.15° (typ.)
Phase error
peak < 1.2°, 0.4° (typ.)
Error vector magnitude 8PSK EDGE, Gaussian linearized filter,
RMS
< 0.5 %, 0.2 % (typ.)
values measured with 30 kHz resolution bandwidth, referenced to level in band center
without power ramping
level 10.5 dBm, 16.5 dBm with R&S
®
SMU-B31, R&S
®
SMU-B36 options
200 kHz offset < –34 dB, –37 dB (typ.)
400 kHz offset < –68 dB, –71 dB (typ.)
Power density spectrum
600 kHz offset < –80 dB, –85 dB (typ.)
8
Level restricted, see specifications.
9
0 dB baseband gain (standard).
10
885 kHz offset and 30 kHz bandwidth.
11
Measured with root cosine filter.
12
6 dB baseband gain (low noise).
13
1.25 MHz offset and 30 kHz bandwidth.
14
1.98 MHz offset and 30 kHz bandwidth.