An example of a high power machine for solids

This is an example of a general purpose high power spectrometer for solids. As sketched, it was set up for proton T measurements at 63 MHz but it has been used at various frequencies between 2 and 85 MHz by changing the transmitter and the receiver preamps as well as by using different probes. We do not heterodyne as in the previous example because the receiver is broadbanded. This does mean that the phase shift must be adjusted for each frequency. 

The phase detected signal from the receiver goes to two 

In this spectrometer, the timing and the digitizing functions already mentioned, as well as several other functions are performed by modules located in a CAMAC crate. A discussion of CAMAC will follow in the next section (V.C.3.). Simply described, it is a commercially standardized hardware system interfaced to the minicomputer with a few hundred modules of all kinds available commercially. 

The Bi Ra 1303 crate controller acts as the translator between the minicomputer and all the remaining CAMAC modules. In this example, it interfaces the Nova 1200 with the two digitizers, the timer, the X-Y driver, and the GPIB interface. 

We have two output modules in the CAMAC crate. One is a Joerger x-y driver (module XY) which drives a low frequency x-y oscilloscope (Tektronix 503) for displaying com- 

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