Table # 3 Troubleshooting matrix

Amplifier performance anomaly

Symptom

Excessive gain non-linearity

Slice profile distortion

Excessive phase non-linearity

Slice profile distortion

Excessive pulse tilt

Slice profile distortion

Excessive pulse overshoot

Slice profile distortion

Excessive rising/falling transition duration

Slice profile distortion

Excessive blanked noise output

Low signal to noise ratio, noisy image

Gain instability

Image ghosting/shading

Phase instability

Image ghosting

Spurious oscillation

Image artifacts/streaking

Low power output

Inability to achieve desired flip angles, increased spatial distortion