It is variation on the theme digital scale. Device was designed for older construction (T)Rx using VXO with frequency multiplication concept.
Schematics is identical to schmatics of counter. Switching +/- IF is not implemented, it is assumed, that IF will be substracted (or added) from measured value. Program works the following way:
Details can be found in the source code. To calculate T1, T2, T3 and Z it should be used the same program as for digital scale with the same IF. |