Keysight E6680A - IF Gain Offset

3 IQ Analyzer (Basic) Mode
3.1 Complex Spectrum Measurement
Example
:SPEC:IF:GAIN AUTOrange
Low Gain (Best for Large Signals)
Forces IF Gain to LOW.
Example
:SPEC:IF:GAIN LOW
High Gain (Best Noise Level)
Forces IF Gain to HIGH.
Example
:SPEC:IF:GAIN HIGH
IF Gain Offset
Sets the IF Gain Offset for the 40 MHz, 140 MHz, 160 MHz IF Paths in 1 dB step
from the minimum gain available to the maximum. Increasing the gain can increase
the amplitude of small signals, as long as you do not overdrive the hardware.
Wideband gain should usually be adjusted after setting the input attenuation.
Internally, the value of "IF Gain" on page 260 changes based on the current
configuration of the hardware. If you want to offset this value, you may do so with
this parameter. Hence the value specified is not an absolute value, but relative to
the current internal IF Gain setting.
For example:
–
IF Gain Low + IF Gain Offset +4 dB = Total IF Gain of +4 dB (0 + 4 = 4)
–
IF Gain High + IF Gain Offset +4 dB = Total IF Gain of +14 dB (10 + 4 = 14)
–
IF Gain Low + IF Gain Offset -6 dB = Total IF Gain of -6 dB (0 – 6 = -6)
–
IF Gain High + IF Gain Offset -6 dB = Total IF Gain of +6 dB (10 – 6 = 4)
The available IF Gain depends on "IF Path" on page 376 and Center Frequency. The
maximum IF Gain may not be achievable at all times, depending on the
configuration.
Remote Command Complex Spectrum:
[:SENSe]:SPECtrum:IF:GAIN:OFFSet <rel_ampl>
[:SENSe]:SPECtrum:IF:GAIN:OFFSet?
Streaming:
[:SENSe]:STReaming:IF:GAIN:OFFSet <rel_ampl>
[:SENSe]:STReaming:IF:GAIN:OFFSet?
IQ Analyzer Mode User's &Programmer's Reference 262