Keysight x-series Instruction Manual

6 Input/Output
6.2 Input
Remote
Command
:INPut:IQ[:I]:DIFFerential OFF | ON | 0 | 1
:INPut:IQ[:I]:DIFFerential?
Example Put the I channel in Differential mode:
:INP:IQ:DIFF ON
Put the I channel in Single Ended mode:
:INP:IQ:DIFF OFF
Notes When I Differential Input = On, the instrument checks for attenuation mismatches between the I and I-
bar ports. If the difference in attenuation values exceeds 0.5 dB, a Settings Alert error condition, error
159 is set
When I Differential Input = On, and IQ Path is I+jQ, the Q Differential input must also be On. Similarly,
when I Differential Input = Off, and IQ Path is I+jQ, the Q Differential input must also be Off. If the states
of the two inputs do not match, an error condition message is generated, 159, Settings Alert; I/Q
mismatch: Differential
Couplings Some active probes include built-in differential capability. When one of these probes is sensed, this key
is disabled. Since the differential capability is handled in the probe, the Instrument will use only the
main port and the key will show that the Instrument's Differential Input mode is Off (indicating that the
complementary port is not in use)
When Q Same as I is On, the value set for I will also be copied to Q
Preset OFF (Single Ended)
Unaffected by Mode Preset, but set to the default value by Restore Input/Output Defaults or Restore
System Defaults->All
State Saved Yes
Annotation The LED on the I-bar port indicates the Differential Input setting
Backwards Compatibility Command
Notes For R&S FSQ-B71 compatibility, with no independent settings for the I and Q channels. Therefore, it is
tied only to the I channel and does not provide an equivalent for the Q channel. For proper operation of
the backwards compatibility command, Q Same as I should be ON
Preset
OFF
Backwards
Compatibility
SCPI
:INPut[1]:IQ:BALanced[:STATe] OFF | ON | 0 | 1
:INPut[1]:IQ:BALanced[:STATe]?
Input Z
Selects the input impedance for the I channel. The impedance applies to both the I
and I-bar ports.
The input impedance controls the hardware signal path impedance match. It is not
used for converting voltage to power. The voltage to power conversion always uses
the Reference Z parameter. The Reference Z parameter applies to both I and Q
channels.
Short Range Comms & IoT Mode User's &Programmer's Reference 2074

Keysight x-series Specifications

General

Analysis Bandwidth	Up to 1 GHz (depending on model)
Real-Time Bandwidth	Up to 1 GHz (depending on model)
Form Factor	Benchtop
Connectivity	LAN, USB, GPIB
Resolution Bandwidth	1 Hz to 10 MHz (depending on model)