3 Spectrum Analyzer Mode
3.6 Power Stat CCDF Measurement
This is an alternate form of the command to allow entry as a power.
Remote
Command
[:SENSe]:POWer:IQ[:I]:RANGe[:UPPer]
<ampl>
[:SENSe]:POWer:IQ[:I]:RANGe[:UPPer]?
Example Set the I Range to 0.5V Peak when Reference Z is 50Ω, and to 1.0V Peak when Reference Z is 75Ω
:POW:IQ:RANG 4 dBm
:POW:IQ:RANG?
Notes The POWer form of the command is provided for convenience. It maps to the same underlying gain
range parameter as the VOLTage form
The Reference Z (not the I channel Input Z) is used to convert the power to peak voltage, which is then
used to set the I Range as with the VOLTage form of the command. The power values of the 4 range
states (1V Peak, 0.5V Peak, 0.25V Peak, and 0.125V Peak) will vary with Reference Z. Here are some
examples:
50 Ω: 10, 4, -2, -8
75 Ω: 8.2, 2.2, -3.8, -9.8
600 Ω: -0.8, -6.8, -12.8, -18.9
Preset 10.0 dBm
Range -20 dBm to 10 dBm
Min -20 dBm
Max 10 dBm
Q Range
The internal gain range for the Q channel. Q Range only applies to Input Path Q Only
and Ind I/Q. For input I+jQ "I Range" on page 1972 determines both I and Q channel
range settings.
Remote
Command
[:SENSe]:VOLTage:IQ:Q:RANGe[:UPPer] <voltage>
[:SENSe]:VOLTage:IQ:Q:RANGe[:UPPer]?
Example Set the Q Range to 0.5 V Peak:
:VOLT:IQ:Q:RANG 0.5 V
:VOLT:IQ:Q:RANG?
Notes The numeric entries are mapped to the smallest gain range whose break point is greater than or equal
to the value, or 1V Peak if the value is greater than 1V
Q Range is only used for Input Path Q Only and Ind I/Q. For input I+jQ, "I Range" on page 1972
determines both I and Q channel range settings
Couplings When "Q Same as I" on page 1974 is On, the "I Range" on page 1972 value is copied to Q Range and
the range value keys are disabled
Changing the value also sets Range = Man
Preset 1 V Peak
State Saved Saved in instrument state
1158 Spectrum Analyzer Mode User's &Programmer's Reference
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