I/Q software interface (Option R&S RTP-K11)
R&S
®
RTP
1005User Manual 1337.9952.02 ─ 12
As usual, the signal icons of the enabled channels show the current settings. In I/Q
mode, the I/Q settings are shown, see Figure 17-3. The left signal icon shows a com-
plex input signal in IF range with carrier frequency 1 MHz and normal/upper sideband.
C1 is the in-phase component, C2 the quadrature component. The right signal icon
shows a real input signal with carrier frequency 1 MHz. C1 has inverse sideband, C2
has normal sideband.
Figure 17-3: Signal icons in I/Q mode
1 = Signal component
2 = Input type/Input mode
3 = Sideband
4 = Carrier frequency
Enable
Enables the I/Q mode to record I/Q data.
The analyzing tools on the toolbar are deactivated, and the magnitude of the I/Q vector
is displayed.
Remote command:
IQ:STATe on page 2250
Input sample rate
Shows the sample rate of capturing the input data in I/Q mode: 20 Gsample/s.
If you use R&S RTP134 or R&S RTP164 instruments, you can change the sample rate
to 40 Gsample/s. In this case, only 2 channels are available for real RF signals, or one
complex channel. For input, Ch 1 and Ch 3 are used, Ch 2 and Ch 4 are not available.
The higher sample rate also reduces the acquisition range.
Remote command:
IQ:INSRate on page 2250
Input type, Input mode
"Input type" sets the format of the input signal. "Input mode" selects the frequency
band of a complex input signal.
The R&S RTP I/Q software interface supports three formats of input signals.
●
Real RF signals
I/Q sampling setup
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