BTC Z22 Instrukcja Użytkownika Pobierz pdf (Strona 16)

Version 02.00, November 2014

16 Rohde & Schwarz R&S

BTC Broadcast Test Center

Output parameters

Interface

Standard

in line with R&S

Digital I/Q Interface

I/Q data and control signals, data and

interface clock

Level

LVDS

Connector

26-pin MDR

I/Q sample rate

With source “user-defined”, the sample rate must be entered via the parameter “sample

rate”, no I/Q data clock being necessary.

Source

user-defined

Sample rate

max. sample rate depending on connected

receiving device

400 Hz to 100 MHz

Resolution (user-defined)

0.001 Hz

Frequency uncertainty (user-

defined)

< (5 × 10

14

+ relative deviation of

reference frequency) × sample rate (nom.)

I/Q data

Resolution

up to 18 bit

Logic format

two’s complement

Physical signal level

Setting range

0 dBFS to –60 dBFS

Resolution

0.01 dBFS

Bandwidth (RF)

sample rate < 200 MHz (interpolation)

0.625 × sample rate

Input parameters

Input level

peak level

Peak level

Setting range

–60 dB to +3 dB, referenced to full scale

Resolution

0.01 dB

Crest factor

Setting range

0 dB to +30 dB

Resolution

0.01 dB

Adjust level function

automatically determines peak level and crest factor of input signal

I/Q swap

I and Q signals swapped

on/off

Interface

Standard

in line with R&S

Digital I/Q Interface

I/Q data and control signals, data and

interface clock

Level

LVDS

Connector

26-pin MDR

I/Q sample rate

With source “user-defined”, the sample rate must be entered via the parameter “sample

rate”, no I/Q data clock being necessary. With source “digital I/Q in”, the sample rate

will be estimated based on the applied I/Q data clock.

Source

user-defined, digital I/Q in

Sample rate

max. sample rate depending on connected

transmitting device

400 Hz to 160 MHz

Resolution (user-defined)

0.001 Hz

Frequency uncertainty

(user-defined)

< (5 × 10

14

+ relative deviation of

reference frequency) × sample rate (nom.)

I/Q data

Resolution

18 bit

Logic format

two’s complement

Bandwidth

sample rate = 160 MHz (no interpolation,

user-defined)

160 MHz

sample rate < 160 MHz (interpolation)

0.625 × sample rate

R&S

Digital I/Q Interface is a Rohde & Schwarz internal company standard for the transmission of digital I/Q data. It is supported by a wide range of

signal generators, signal analyzers and radiocommunications testers.

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