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1079
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 trade off is that there is a modest loss of noise floor performance, up to about a decibel.
Medium (Log Accy)
The Medium setting of ADC Dither (known as “On” in earlier versions of the test set software) improves
the linearity of low-level signals at the expense of some noise degradation.
Off (Best Noise)
When ADC Dither is Off, the test set noise floor is improved, because without the need to make room for
the dither, you get a lower noise floor and better sensitivity.
Swept IF Gain
To take full advantage of the RF dynamic range of the test set, there is an added switched IF amplifier
with approximately 10 dB of gain. When you can turn it on without overloading the test set, the dynamic
range is always better with it on than off. The
Swept IF Gain key can be used to set the IF Gain function
to Auto, or to High Gain (the extra 10 dB), or to Low Gain. These settings affect sensitivity and IF
overloads.
Readback The “Auto” is underlined, and the readback value is whatever setting is
auto-selected
Initial S/W Revision Prior to A.02.00
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
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
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