NMR instrumentation- a primer

This primer covers de-bugging NMR hardware, at the level of major components (not the circuit board level). It is intended for users of NMR who are unlikely to build their own spectrometer, but will need to localize the malfunction to individual small sub-systems. Brand names and some part numbers of appropriate test equipment and lab-gadgets are given. But many users will find themselves in need of special purpose NMR probes, so construction of a dedicated probe is not beyond consideration. Thus, simple single-resonance probe circuits are discussed at greater length. The need for tuning and coupling of the probe tuned circuit is treated as an exercise in impedance matching.