BTC Z22 Manual do Utilizador descarregar pdf (Página 42)

Version 02.00, November 2014

42 Rohde & Schwarz R&S

BTC Broadcast Test Center

Total insertion loss

automatic or user-definable, with clipping

indicator

–3 dB to 30 dB

Correlation

fading paths in signal path A pairwise with fading paths in signal path B

correlation coefficient

setting range

0 % to 100 %

resolution

1 %

correlation phase

setting range

0° to 360°

resolution

1°

Lognormal

standard deviation

0 dB to 12 dB

resolution

1 dB

local constant at f = 1 GHz

20 m to 2000 m

Dynamic fading (R&S

BTC-K1031 option; in preparation)

At least one fading simulator must be installed. If two or more fading simulators are installed (signal paths A and B), dynamic fading

can be used either on signal path A or B with one R&S

BTC-K1031 option. For dynamic fading to be used on signal paths A and B

simultaneously, two R&S

BTC-K1031 must be installed.

Moving delay mode

Number of fading paths

2 per signal path

Fading profiles

none

Basic delay

in steps of 5 ns

0 s to 0.5 s

Delay variation

peak to peak

0.3 µs to 40 µs

variation period

10 s to 500 s

variation speed

0 µs/s to 5 µs/s

Delay step size

5 ps

Birth-death mode

System bandwidth

160 MHz

Number of fading paths

2 per signal path

Fading profiles

pure Doppler

Delay range

0 s to 40 µs

Delay grid

0 s to 20 µs

Positions

3 to 50

Hopping dwell

100 ms to 5 s

Start offset

separately settable for each signal path

1 ms to 200 ms

Delay resolution

10 ns

Two-channel interferer

Number of fading paths

2 per signal path

Fading profiles

static path, pure Doppler, Rayleigh

Fading profile parameter

Rayleigh

pseudo-noise interval

> 1 year

phase resolution

1°

Pure Doppler

maximum resulting Doppler shift

frequency ratio × current Doppler

frequency

frequency ratio

–1 to +1

resolution

0.01

Fading path loss

setting range

0 dB to 50 dB

resolution

0.01 dB

accuracy

< 0.01 dB

Speed range

at f = 1 GHz

0 km/h to 4320 km/h

accuracy

< 0.1 %

Min. delay

path 1

0 µs to 1638 µs

path 2

0 µs to 999.9 µs

Max. delay

path 1

–

path 2

0.1 µs to 1000 µs

Moving mode

path 1

–

path 2

sliding, hopping

Period/dwell

0.1 s to 10 s

The maximum delay range of 40 µs cannot be exceeded.

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BTC Z22 Manual do Utilizador Página 42

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