High Voltage Linear Amplifier A400X
This unit is a version of A400 amplifier equipped with two inputs, DC-offset and output atenuation.
Please see A400 page for technical details of the high voltage amplifier part.
Input A is a normal non-inverting one. Using this input alone makes A400X functionally identical with A400 amplifier.
Input B can act as a inverting or non-inverting depending on the position of the corresponding switch.
Applying different signals to both input results in their amplified sum or difference:
A DC level, adjustable within 0...+10V range, is provided on the front panel from two BNC contacts marked “OFFSET OUT”. Both contacts are internally connected to simplify monitoring of the output. For bipolar operation the DC level should be supplied to ±B input. Please note that the maximum total amplitude of superposed A and B signals should stay within ±10V range, otherwise clipping will occur.
By means of dedicated switch the output can be attenuated 100 times (-40dB) for safe handling.