Amplifier Test

Abstract

For this test, we used the existing back end configuration. For the burst type signal we used the excitation system, and for the continuous type signal we used an arbitrary function generator. The frequencies of the signal are 100, 200, 300, 400 MHz. The signals were adjusted to be approximately the same level when input into the back end chain. At the MUX out load we measure the signal with a Tektronix oscilloscope, triggering on the load signal itself, recording 1K turns (fiducial triggers). The negative (${V{_{load}^{-p}}}$) and positive (${V{_{load}^{p}}}$) peak voltages generated were recorded, from which peak to peak voltages (${V{_{load}^{pp}}}$) were computed. The input signal was attenuated by 10 dB compared to the normal operating signal used for beam excitation as a cautionary measure. One measurement was made at normal operating power. We measure the loads of two amplifiers, amp 2 and amp 4.