Bruker BioSpin GRASI-1.0, User Manual

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User Manual Version 001 BRUKER BIOSPIN 5 (41)
1
Introduction 1
The GRASI Unit ( GR radient A nd S him I nterface) is an interface device designed
to drive several gradient amplifiers. Its main function is to lead the gradient pulse
sequence signals coming from the Gradient Control Unit to the different amplifiers
(X, Y, Z and B0 channels). The integrated power control function protects the
gradient set connected to the amplifiers from over_voltage, over_current and the
duty cycle is controlled to avoid any power excess on the loads.
Figure 1.1. GRASI Unit diagram
Figure 1.2. GRASI Gradient and Shim Unit
Gradient
Controller
GRASI Unit
Channel X
Gradient Amplifier
Channel Z
Gradient Amplifier
Channel Y
Gradient Amplifier
Channel B0
Gradient Amplifier
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