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HP 70427A/HP 70428A User’s Guide
10-85
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
Adjust Bias
message will be displayed.
This softkey is disabled when the
BIAS ON|OFF
has
OFF
underlined.
The bias current will be present at the downconverter’s
SIGNAL
input when
it is in millimeter-wave (mm) mode and when the
BIAS ON|OFF
has
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
Summary of Contents for 70427A
Page 11: ...x HP 70427A HP 70428A User s Guide Declaration of Conformity ...
Page 13: ... xii HP 70427A HP 70428A User s Guide Typeface Conventions ...
Page 243: ...9 42 HP 70427A HP 70428A User s Guide Technical Data HP 70428A Option 002 Specifications ...
Page 299: ...10 56 HP 70427A HP 70428A User s Guide Softkeys and Displays IF Figure 10 42 μW Mode HP70472A ...
Page 385: ...10 142 HP 70427A HP 70428A User s Guide Softkeys and Displays YTF Cal ...
Page 435: ...12 14 HP 70427A HP 70428A User s Guide Remote Programming Commands ...
Page 607: ...15 10 HP 70427A HP 70428A User s Guide Adjustments 10 MHz Oscillator Adjustment ...
Page 611: ...16 4 HP 70427A HP 70428A User s Guide Customer Support ...