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176 Chapter 4
Making Measurements
Using Baseband I/Q Inputs (Option B7C)
INPut Subsystem
The INPut subsystem controls the characteristics of all the instrument
input ports.
Baseband I/Q - Select Input Impedance
:INPut:IMPedance:IQ U50|B600|U1M|B1M
:INPut:IMPedance:IQ?
Selects the characteristic input impedance when input port is set to I or
Q. This is the impedance value as well as the unbalanced (U) or
balanced (B) impedance mode.
Baseband I/Q - Select Input Impedance Reference
:INPut:IMPedance:REFerence <integer>
:INPut:IMPedance:REFerence?
Sets the value of the input impedance reference when input port is set
to I or Q.
Baseband I/Q - Activate IQ Alignment
:INPut:IQ:ALIGn OFF|ON|0|1
:INPut:IQ:ALIGn?
Activates or deactivates IQ alignment.
Baseband I/Q - I Input DC Offset
:INPut:OFFSet:I <level>
:INPut:OFFSet:I?
Sets adjustment to compensate for I voltage bias on signals when the I
input port is selected.
Baseband I/Q - Q Input DC Offset
:INPut:OFFSet:Q <level>
:INPut:OFFSet:Q?
Sets adjustment to compensate Q voltage bias on signals when the Q
input port is selected.