Agilent Technologies X Series Manual page 396

Input/Output
X-Series Model
N9010A
N9020A
N9030A
Some amplitude specifications apply only when coupling is set to DC. Refer to the appropriate
amplitude specifications and characteristics for your analyzer.
When operating in DC coupled mode, ensure protection of the analyzer input circuitry by limiting the
DC part of the input level to within 200 mV of 0 Vdc. In AC or DC coupling, limit the input RF power to
+30 dBm (1 Watt).
Key Path
Remote Command
Example
Dependencies
Preset
State Saved
Initial S/W Revision
Modified at S/W Revision
RF Input Port
Specifies the RF input port used. The RF Input Port key only appears on units with multiple inputs, and
lets you switch between the two inputs.
Switching from the RF input port to one of the RFIO ports, on units which have them, changes the
receiver performance of the instrument.
Key Path
396
Lowest Freq for meeting specs when AC coupled
10 MHz
10 MHz
10 MHz
Input/Output, RF Input
:INPut:COUPling AC|DC
:INPut:COUPling?
INP:COUP DC
This key does not appear in models that are always AC coupled. When the
SCPI command to set DC coupling is sent to these models, it results in the
error "Illegal parameter value. This model is always AC coupled" In these
models, the SCPI query INP:COUP? always returns AC.
This key does not appear in models that are always DC coupled.When the
SCPI command to set AC coupling is sent to these models, it results in the
error "Illegal parameter value. This instrument is always DC coupled" In
these models, the SCPI query INP:COUP? always returns DC.
AC on models that support AC coupling
On models that are always DC coupled, such as millimeter wave models
(frequency ranges 30 GHz and above), the preset is DC.
Saved in instrument state.
Prior to A.02.00
A.03.00
Input/Output, RF Input
Lowest Freq for meeting
specs when DC coupled
9 kHz
3 Hz
3 Hz