Agilent Technologies Signal Analyzer N9030a - Manual (Page 592)

6 RLC Swept SA Measurement Front-Panel & SCPI Reference
Input/Output
On models that are always DC coupled, such as millimeter wave models (frequency ranges 30
GHz and above), the preset is DC.
State Saved Saved in instrument state.
Initial S/W Revision Prior to A.02.00
Modified at S/W
Revision A.03.00
I/Q
This feature is not available unless the "Baseband I/Q (Option BBA)" on page 592 is installed.
Selects the front-panel I/Q input ports to be the analyzer signal input. If I/Q is already selected,
pressing this key accesses the I/Q setup menu.
Key Path Input/Output
Mode BASIC, CDMA2K, EDGEGSM, TDSCMDA, VSA89601, WIMAXOFDMA
Example FEED AIQ
Notes Not all measurements support the use of the I/Q signal input. When I/Q is selected in a
measurement that does not support it, the “No Result; Meas invalid with I/Q inputs” error
condition message appears. This is error 135
Initial S/W Revision Prior to A.02.00
Baseband I/Q (Option BBA)
The Baseband I/Q functionality is a hardware option. It is option BBA. If the option is not
installed, none of the I/Q functionality is enabled.
The Baseband I/Q has four input ports and one output port. The input ports are I, I-bar, Q, and
Q-bar. The I and I-bar together compose the I channel and the Q and Q-bar together compose the Q
channel. Each channel has two modes of operation, Single-Ended (also called "unbalanced") and
Differential Input (also called "balanced"). When in Single-Ended operation, only the main port (I
or Q) is used and the complementary port (I-bar or Q-bar) is ignored. When in Differential Input
mode, both main and complementary ports are used.
The input settings (range, attenuation, skew, impedance, external gain) apply to the channels, not
the individual ports.
The system supports a variety of 1 MΩ input passive probes as well as the Agilent 113x Series
active differential probes using the Infinimax probe interface.
592 Remote Language Compatibility Measurement Application Reference