Downstairs if/lo 260MHz Amplifiers

feb 20

links
Intro
compression levels


Intro

    The downstairs if/lo 260MHz amplifiers are located in racks 7-17 (left amp) and 8-16 (rightAmp). They are composed of a an 11 db variable attenuator (before the amps) followed by 5 10 db amplifiers.
    The front panel switch is labeled:

    They are wide band amplifiers  (not sure the bandwidth since i can't find the drawings :).


Compression levels:

 
    On 14feb20 the compression levels for the 260MHz amps were measured. The setup was:

The cabling was:

The measurement sequence was

The plots show the output versus input power for the tests (.ps) (.pdf)

Summary:

1db compression levels for 260MHz Amps

inputPwr dbm
outputPwr dbm
ampSetting
amp0
amp10
amp0
amp10
left Amp
-28 -17 24 23
rightAmp
-30 -20 17 16


processing: x101/100214/if2260amps.pro

home_~phil