Specifications of base unit, Specifications dvb/8vsb/isdb-t/j.83-b – Atec Rohde-Schwarz-SFQ Series User Manual
Page 14
14
TV Test Transmitter R&S
®
SFQ
Specifications of base unit
Frequency (main carrier)
Range
0.3 MHz to 3.3 GHz
Resolution
1 Hz
Accuracy
see reference frequency
Reference frequency
Inaccuracy
<
±1·10
–6
Aging (after 30 days of operation)
1·10
–6
/year
Temperature effect (0°C to 55°C)
2·10
–6
Output for internal ref. frequency
10 MHz
Level (V
rms
EMF, sinewave)
1 V
Input for external reference
Frequency
5 MHz or 10 MHz
Permissible frequency drift
3·10
–6
Input level (V
rms
)
0.1 V to 2 V
Input impedance
200
Ω
Spectral purity
Spurious signals
Harmonics (up to 5 GHz)
<–30 dBc
Nonharmonics
CW
<–70 dBc
I/Q modulation
<–56 dBc (ref. to CW)
SSB phase noise
measured at 750 MHz, CW,
1 Hz bandwidth
Offset from carrier 1.1 kHz
–85 dB
2.2 kHz
–89 dB
3.4 kHz
–94 dB
4.5 kHz
–98 dB
8.9 kHz
–104 dB
13.4 kHz
–103 dB
20 kHz
<–108 dB
Spurious FM rms (f = 1 GHz),
0.3 kHz to 3 kHz (ITU-T)
<8 Hz
Level
Range
CW
–99.9 dBm to
+13 dBm
DVB-T
−99.9 dBm to +6 dBm
ATSC/8VSB
−99.9 dBm to +3 dBm
ISDB-T
−99.9 dBm to +4 dBm
DVB-C/DVB-S
−99.9 dBm to +7 dBm
J.83B
−99.9 dBm to +2 dBm
With fading
see R&S SFQ-B11
Resolution
0.1 dB
Total level inaccuracy
<
±1.5 dB
Frequency response at 0 dBm
<1 dB, typ. <0.5 dB
Output impedance
50
Ω
VSWR
RF level
13 dBm to 0 dBm
<2
<0 dBm to
−99 dBm
<1.4
RF output
with DC block (max. 50 V DC)
Non-interrupting level setting
15 dB in selectable level range
Overvoltage protection
protection against externally fed
RF power
External I/Q input
(for optional I/Q output/input see page 16)
Modulation inputs for external feed of
I and Q
Input impedance
50
Ω
VSWR (DC to 30 MHz)
<1.4
Input voltage for
full-scale level
(I
2
+ Q
2
)
1/2
= 0.5 V (1 V EMF, 50
Ω)
Level correction for nominal
RF output level
0 dB to 40 dB
Connector
BNC female
I/Q modulation
1
)
Modulation frequency response
DC to 3.5 MHz
RF = 0.3 MHz to 1000 MHz
<±0.2 dB
RF = 0.3 MHz to 3300 MHz
<±0.3 dB
DC to 17.5 MHz,
RF = 0.3 MHz to 3300 MHz
<±0.8 dB
DC to 22.5 MHz
RF = 0.3 MHz to 3300 MHz
<±1 dB
Carrier leakage at 0 V input voltage
referred to full-scale level
with fading
<
−50 dBc (after I/Q calibration in setup
menu)
see option R&S SFQ-B11
Carrier leakage
Setting range
0% to 50%
Resolution
0.1%
I/Q amplitude imbalance
Setting range
−25% to +25%
Resolution
0.1%
Quadrature offset (phase error)
Setting range
−10° to +10°
Resolution
0.1°
Data input for MPEG2 data stream
TS PARALLEL input
synchronous parallel (without stuffing),
LVDS
Characteristics
meet EN50083-9
Input impedance
100
Ω
Input level (V
pp
)
100 mV to 2 V
Connector
25-contact female, shielded
Symbol rate (DVB-C, DVB-S)
Accuracy
with external MPEG signal
synchronized to external MPEG signal
without external MPEG signal
see optional input interface (R&S SFQ-B6)
ASI (asynchronous serial input, with
stuffing)
see optional input interface
SPI (synchronous parallel input, with
stuffing)
see optional input interface
SMPTE (synchronous input)
see optional serial input interface
1
) Valid for a warm-up period of 1 hour, recalibration for an operating time
of 4 hours and temperature variations less than 5 degrees.
Specifications DVB/8VSB/ISDB-T/J.83-B
Input Interface
option R&S SFQ-B6
SPI input
synchronous parallel (with stuffing), LVDS
Characteristics
meet EN50083-9
Input impedance
100
Ω
Input level (V
PP
)
100 mV to 2 V
Connector
25-contact female, shielded
ASI input
asynchronous serial, with stuffing
Characteristics
meet EN50083-9
Input impedance
75
Ω
Input level (V
PP
)
200 mV to 880 mV
Connector
BNC female
Input signal
270 Mbit
Stuffing bytes
single-byte and block mode
Input SMPTE 310
synchronous serial (only in conjunction
with ATSC/8VSB coder)
Characteristics
meet SMPTE310M
Input impedance
75
Ω
Input voltage (V
PP
)
400 mV to 880 mV
Connector
BNC female
Data rate
19.392658 Mbit/s
Symbol rate (SPI, ASI)
selectable by inserting null PRBS
packets (stuffing)
Inaccuracy of internal data clock
<±1·10
−5
External clock
switchable between bit and byte clock
Signal, level
TTL
Input impedance
high-impedance
Connector
BNC female
Internal transport stream
null transport stream packets with
PRBS as payload (PRBS:
2
23
−1/2
15
−1 to ITU-T Rec. O.151)