6 Input/Output
6.2 Input
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
Set the I channel input impedance to 50 Ω:
:INP:IQ:IMP LOW
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
Unaffected by Mode Preset, but set to the default value by Restore Input/Output Defaults or Restore
System Defaults->All
State Saved Yes
Annotation "I:<I Input Z>" (examples, "I:50Ω" or "I:1MΩ") in the Measurement Bar. The annotation shows both the I
and Q Input Z values
Skew
Sets the skew factor for the I channel. The skew will shift the channel's data in time.
Use this to compensate for differences in the electrical lengths of the input paths
due to cabling.
Remote
Command
[:SENSe]:CORRection:IQ[:I]:SKEW <seconds>
[:SENSe]:CORRection:IQ[:I]:SKEW?
Example Delay the data for the I channel by 10 ns:
:CORR:IQ:SKEW 10 ns
Preset 0
State Saved Yes
Unaffected by Mode Preset, but set to the default value by Restore Input/Output Defaults or Restore
System Defaults->All
Range 0 s to 100 ns
Min 0 s
Max +100 ns
2380 Spectrum Analyzer Mode User's &Programmer's Reference
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