Looking for a HP 5343A Service Manual for S/N 2440A prefix. All kinds a manuals for the 2014A prefix. I am working on issues with the 10Hz to 500Hz section of my counter and the A3 Direct Counter PCBA P/N 05342-60040 is different than the information in older SM. Anyone have any information on this Counter Board. Tnx Rich KQ6EF
