HP 70427A/HP 70428A User’s Guide
10-107
Softkeys and Displays
Power Control
Power Control
This softkey displays a menu of softkeys for selecting the noise performance
of the local oscillator or source.
The choices are
Low Noise
and
Linear
.
In the low-noise mode the amplifiers at the output of the YIG-Tuned-Filter
(YTF) are biased into hard compression for low noise. But, because of the
hard compression the waveform tends to have high order harmonics.
In the linear mode the amplifiers are biased linearly, which makes the higher
order harmonics lower. Also, the output level will tend to be more accurate
with the HP 70428A Option 002, AM on the external RF source’s signal will
be passed through.
The choice is stored in non-volatile memory.
Path
Service Misc Power Control
HP-IB command
None.
Figure 10-75
Reference Chain
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 ...