Abstract: The invention is a solution that is architected to simulate POS with transactions that allows businesses to test the POS transactions in a defined and repeatable manner. This invention provides a software solution and method to test point of sale test transactions and validate that the correct point of sale transactions and discounts have passed quality assurance policy and standards and ready to be deployed to the production environment. The solution captures, for re-use, the systemic responses to a point of sale transaction and procedure for the purposes of automated testing of the transaction and procedure. This invention records the details of the transaction and procedure by examining and saving to a database or file with the details of the procedural steps and transactional values as well as null values. The solutions provides pass or fail values after measuring the actual result to the expected result.

Abstract: An oscillator apparatus and method for use in determining the linearity of output of a single sideband radio transmitter in which first and second oscillators are provided for generating respective audio tone signals having first and second frequencies. Each oscillator has a tone amplitude control for adjusting the amplitude of the signal produced. The signals are added, combined, and delivered to a transmitter in such a manner as to permit adjustment of oscillator and transmitter performance to a selected fraction of rated output power on each signal alone. Such adjustment makes possible a determination of linearity as described in the specification.