/// <summary>
        /// Test an expected value against a copy of the coupling of Frequency controls between channel 1 and channel 2 of a two channel AWG.
        /// </summary>
        /// <param name="awg"></param>
        /// <param name="expectedState"></param>
        public void AWGFgenCouplingFrequencyStateValueShouldBe(IAWG awg, FGenCoupleFrequency expectedState)
        {
            string       queriedSyntax       = expectedState == FGenCoupleFrequency.Off ? FGenCoupleFrequencyOffQuerySyntax : FGenCoupleFrequencyOnQuerySyntax;
            const string possibleErrorString = "Checking the FGen coupling Frequency";

            Assert.AreEqual(queriedSyntax, awg.FGenCoupleFrequency(), possibleErrorString);
        }
        /// <summary>
        /// Sets the coupling of Frequency controls between channel 1 and channel 2 of a two channel AWG.
        /// </summary>
        /// <param name="awg"></param>
        /// <param name="setValue"></param>
        public void SetTheAWGFgenCouplingFrequencyStateValueTo(IAWG awg, FGenCoupleFrequency setValue)
        {
            string commandSyntax = setValue == FGenCoupleFrequency.Off ? FGenCoupleFrequencyOffCommandSyntax : FGenCoupleFrequencyOnCommandSyntax;

            awg.SetFGenCoupleAmpl(commandSyntax);
        }