BTC Z22 Instrukcja Użytkownika Pobierz pdf (Strona 15)

Version 02.00, November 2014

Rohde & Schwarz R&S

BTC Broadcast Test Center 15

Differential analog I/Q outputs (R&S

BTC-K2500 option)

With the R&S

BTC-B11 option, differential analog I/Q outputs can be used on signal path A. If the instrument is equipped with the

R&S

BTC-B12 option, differential analog I/Q outputs can be used on signal paths A and B simultaneously.

Output impedance

Single-ended

50 Ω

Differential

100 Ω

Output voltage

output voltage depends on set modulation signal

Single-ended

EMF

0.02 V to 2 V (V

)

Resolution

1 mV

Differential

EMF

0.04 V to 4 V (V

)

Resolution

2 mV

Bias voltage (single-ended and differential)

EMF

–3.6 V to +3.6 V

Resolution

2 mV

Uncertainty

1 % + 4 mV

Offset voltage

Differential

EMF

–300 mV to +300 mV

Resolution

0.1 mV

Uncertainty

1 % + 0.1 % × bias voltage + 1 mV

Differential signal balance

at R

= 50 Ω, output voltage > 0.5 V (V

)

Magnitude

up to 10 MHz

< 0.2 dB, 0.05 dB (meas.)

up to 80 MHz

0.2 dB (meas.)

Frequency response

at R

= 50 Ω, output voltage > 0.5 V

)

Magnitude

up to 10 MHz

0.02 dB (meas.)

up to 80 MHz

0.03 dB (meas.)

Digital baseband inputs/outputs (R&S

BTC-K2500 option)

Depending on the installed software and hardware options, the R&S

BTC is able to receive digital baseband signals and to output

digital baseband signals. The digital I/Q input/output can be used for the lossless connection of the R&S

BTC to the digital I/Q

input/output of other Rohde & Schwarz instruments.

The following table gives an overview of which software and hardware options are required for which digital I/Q connectivity:

Digital I/Q inputs

Digital I/Q outputs

Minimum required R&S

BTC options

–

R&S

BTC-B11 + R&S

BTC-K2500

–

R&S

BTC-B12 + R&S

BTC-K2500

R&S

BTC-B1 + R&S

BTC-B11 +

R&S

BTC-K2500

R&S

BTC-B1 + R&S

BTC-B12 +

R&S

BTC-K2500

R&S

BTC-B1 + R&S

BTC-B2 +

R&S

BTC-B12 + R&S

BTC-K2500

The magnitude of the sum of output voltage and bias voltage must not exceed 4 V.

“Optimize internal I/Q impairments for RF output” switched off.

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