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BTC Z22 Manual do Utilizador Página 15

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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
p
)
Resolution
1 mV
Differential
EMF
0.04 V to 4 V (V
pp
)
Resolution
2 mV
Bias voltage (single-ended and differential)
EMF
–3.6 V to +3.6 V
7
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
L
= 50 Ω, output voltage > 0.5 V (V
p
)
Magnitude
up to 10 MHz
< 0.2 dB, 0.05 dB (meas.)
up to 80 MHz
0.2 dB (meas.)
Frequency response
8
at R
L
= 50 Ω, output voltage > 0.5 V
(V
p
)
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
–
1
R&S
®
BTC-B11 + R&S
®
BTC-K2500
–
2
R&S
®
BTC-B12 + R&S
®
BTC-K2500
1
1
R&S
®
BTC-B1 + R&S
®
BTC-B11 +
R&S
®
BTC-K2500
1
2
R&S
®
BTC-B1 + R&S
®
BTC-B12 +
R&S
®
BTC-K2500
2
2
R&S
®
BTC-B1 + R&S
®
BTC-B2 +
R&S
®
BTC-B12 + R&S
®
BTC-K2500
7
The magnitude of the sum of output voltage and bias voltage must not exceed 4 V.
8
“Optimize internal I/Q impairments for RF output” switched off.
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