RIGOL Chapter 3 Functions of the Front Panel of RTSA
3-34 RSA3000E User Guide
Input/Output
Sets the input/output interface of the instrument.
Input Impedance
Sets the input impedance for voltage-to-power conversions (refer to equation (2-4).
The default input impedance is 50 Ω. If the output impedance of the system under
measurement is 75 Ω, you should use a 75 Ω to 50 Ω adapter (option) supplied by
RIGOL to connect the analyzer with the system under test, and then set the input
impedance to 75 Ω.
Ext Gain
Compensates for gain or loss in the measurement system outside the instrument.
Remarks:
The value does not affect the trace position, but will modify the parameters such
as reference level readout and the marker amplitude readout.
You can use the numeric keys, the knob, or arrow keys to modify this parameter;
you can also use the touch screen to modify the parameter. For details, refer to
descriptions in "Parameter Setting".
Table 3-20 External Gain
Left/Right Arrow Key Step
Ext Trigger2
Sets the external trigger 2 [TRIGGER IN/OUT] to be the "input" or "output"
interface.
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