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Specifications of base unit, Specifications dvb/8vsb/isdb-t/j.83-b – Atec Rohde-Schwarz-SFQ Series User Manual

Page 14

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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

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

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

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

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

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

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

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)