GAB/2
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On top of the GAB/2 menu there is the link to the Gradient Amplifier Control sub-page. This
page provides an overview over
• The overall state.
• The connected boards.
• Operating state (e. g. “operate“). If the GAB/2 is in state “off, protection” or “error” then the
current source is disconnected by a relay.
• Channel assignment: which board should listen to which LVDS commands.
Figure 10.7: GAB/2 Subsystem Control Page
The GAB/2 service functions provide detailed information for diagnostics and a push button
offset calibration (see also
Offset Re-Calibration in the Field [
There are further links for pre-emphasis parameter setting and logging of the real time
gradient signals on the LVDS interface.
10.6.2
Offset Re-Calibration in the Field
During production, the GAB/2 is calibrated for minimum residual offset. This calibration is
normally sufficient for a long time period and a wide temperature range. However, it may
happen in rare circumstances that the dynamic offset compensator reaches its limitations.
This is reported by an error message sent to the TopSpin application.
It is then necessary to go to the page
Main
|
GAB
|
GAB/2 Service Functions
and invoke
the offset calibration again by depressing the button
Calibrate Offset
.
The other parameters on the GAB/2 Service Page are intended for diagnostic purpose.
Service engineer access rights are necessary for modification - it is however not
recommended to change these parameters under normal circumstances.
Summary of Contents for NMR AV4 BSMS System
Page 1: ...BSMS System for AVANCE NEO User Manual Version 001 Innovation with Integrity NMR...
Page 10: ...Contents x H172203_1_001...
Page 22: ...Safety 22 234 H172203_1_001...
Page 26: ...Transport Packaging and Storage 26 234 H172203_1_001...
Page 42: ...Chassis Mainframe 42 234 H172203_1_001...
Page 46: ...Fan Tray 46 234 H172203_1_001...
Page 55: ...ELCB H172203_1_001 55 234 Figure 8 1 ELCB Front Panel with LED s and Connectors...
Page 69: ...ELCB H172203_1_001 69 234 Figure 8 13 Lock RF Boards Diagnostics...
Page 70: ...ELCB 70 234 H172203_1_001...
Page 120: ...L TRX L 19F 120 234 H172203_1_001...
Page 148: ...BSVT Concept 148 234 H172203_1_001...
Page 166: ...SPB 166 234 H172203_1_001...
Page 172: ...VPSB DC and VPSB DC E 172 234 H172203_1_001 Figure 15 3 Block Diagram of the VPSB DC E...
Page 180: ...VPSB DC and VPSB DC E 180 234 H172203_1_001...
Page 187: ...VTA H172203_1_001 187 234 Figure 16 1 VTA Cable Connectors...
Page 193: ...VTA H172203_1_001 193 234 16 7 Ordering Information See Basic BSVT Configuration 124...
Page 194: ...VTA 194 234 H172203_1_001...
Page 200: ...Nitrogen Level Sensor 200 234 H172203_1_001...
Page 204: ...Radiation Shield Temperature Monitoring MAG RS 204 234 H172203_1_001...
Page 208: ...Installation and Initial Commissioning 208 234 H172203_1_001...
Page 210: ...Operation 210 234 H172203_1_001...
Page 216: ...Replacement of Parts 216 234 H172203_1_001...
Page 222: ...Contact 222 234 H172203_1_001...
Page 226: ...List of Figures 226 234 H172203_1_001...
Page 229: ...Glossary H172203_1_001 229 234 Glossary...
Page 230: ...Glossary 230 234 H172203_1_001...
Page 232: ...Index 232 234 H172203_1_001...
Page 233: ...H172203_1_001 233 234...
Page 234: ...Bruker Corporation info bruker com www bruker com Order No H172203...