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Softkeys and Displays
MIXER BIAS
MIXER BIAS
This softkey allows entry of a bias current for an external harmonic mixer.
The range is –10.000 mA to +10.000 mA DC, with a resolution of
0.0005 mA.
The default is either 0 or 5 mA. The downconverter determines the default
value from the external mixer's LO frequency. If it is an odd harmonic the
default is 5 mA, and an
message will be displayed.
Adjust Bias
This softkey is disabled when the
has
underlined.
BIAS ON|OFF
OFF
The bias current will be present at the downconverter's SIGNAL input when
it is in millimeter-wave (mm) mode and when the
has
BIAS ON|OFF
ON
underlined.
Path
Freqs
MIXER BIAS
HP-IB command
DC:FREQ:MIX:BIAS current
Where current is a real number.
Figure 10-64
HP 70427A
HP 70427A/HP 70428A User's Guide 10-85
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