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8. FADE TO ACM Trigger point <br />a. Set the variable attenuator to "OdB" and connect a Power Meter to the "output" of the RF cable <br />that connects to the Receiver under test. <br />b. In the EM2 software Go back to the "Test" then "RFU Mute" screen and set the terminal to <br />"ONLINE". <br />c. Verify working ACM profile is the higher number set for the test, i.e. profile7: 64QAM. <br />d. Slowly set the Variable attenuator to the value needed to achieve ACM profile to change. <br />e. Verify shifting RSL and new data rate. Write down the result. <br />f. Repeat point (d) until minimum profile is the working profile and further until BER 1 E-6 is <br />reached. <br />g. Repeat for secondary TRCV in HSBY configuration. <br />Results <br />This test is deemed passing if the ACM function is changing working profile until 1 OE -6 threshold is <br />achieved within 1 dB or better of the Guaranteed MNI specification for the radio under test. See Table 5 <br />above for each links guaranteed RSL specification. <br />A TRUE COPY <br />CERTIFICATION ON LAST PAGE <br />RYAN L. BUTLER, CLERK <br />Page 28 <br />