4 Input/Output Functions
Input/Output
Range Off | On
Initial S/W Revision Prior to A.02.00
Remote Command
:INPut[1]:IQ:BALanced[:STATe] OFF|ON|0|1
:INPut[1]:IQ:BALanced[:STATe]?
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 set to On.
Preset OFF
Initial S/W Revision Prior to A.02.00
I 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.
Key Path
Input/Output, I/Q, I Setup
Remote Command
:INPut[1]:IQ[:I]:IMPedance LOW|HIGH
:INPut[1]:IQ[:I]:IMPedance?
Example Set the I channel input impedance to 1 MΩ
INP:IQ:IMP HIGH
Notes LOW = 50 Ω, HIGH = 1 MΩ
When IQ Path is I+jQ, the I Input Z setting must be the same as the Q Input Z setting. If the settings
of the two inputs do not match, an error condition message is generated, 159;Settings Alert;I/Q
mismatch:Input Z.
Couplings Input impedance is a built-in characteristic of a probe. Therefore, whenever a probe is sensed, this
key is disabled and the value is set to match the probe.
When no probe is sensed on Q and Q Same as I is On, the value set for I will also be copied to Q.
Preset LOW
State Saved Yes
This is unaffected by a Preset but is set to the default value on a "Restore Input/Output Defaults" or
"Restore System Defaults->All"
Range 50 Ω | 1 MΩ
Initial S/W Revision Prior to A.02.00
EMI Receiver Mode Reference 163
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