Agilent Technologies Signal Analyzer N9030a - Manual (Page 840)

6 RLC Swept SA Measurement Front-Panel & SCPI Reference
Meas Setup
High (Best Log Accy)
When ADC dither is set to High, the scale fidelity is especially good, most notably the relative
scale fidelity. The tradeoff is that there is a modest loss of noise floor performance, up to about a
decibel.
Key Path Meas setup, ADC Dither
Example ADC:DITH:HIGH
Readback If manually selected, the readback is High, with the “Man” underlined
Initial S/W Revision A.02.00
Medium (Log Accy)
The Medium setting of ADC Dither (known as “On” in earlier versions of the instrument software)
improves the linearity of low-level signals at the expense of some noise degradation.
Key Path Meas setup, ADC Dither
Example ADC:DITH:ON
Readback If manually selected, the readback is Medium, with the “Man” underlined
Initial S/W Revision Prior to A.02.00
Modified at S/W
Revision A.02.00
Off (Best Noise)
When ADC Dither is Off, the instrument noise floor is improved, because without the need to
make room for the dither, you get a lower noise floor and better sensitivity.
Key Path Meas setup, ADC Dither
Example ADC:DITH:OFF
Readback If manually selected, the readback is Off, with the “Man” underlined.
Initial S/W Revision Prior to A.02.00
Swept IF Gain
To take full advantage of the RF dynamic range of the analyzer, there is an added switched IF
amplifier with approximately 10 dB of gain. When you can turn it on without overloading the
840 Remote Language Compatibility Measurement Application Reference