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In the state
Off
the gradient amplifier is switched off but the LVDS daisy chain is operational.
During state changes, the LVDS link output may temporarily be switched off e.g. due to
FPGA re-initialization.
There is a set of non severe errors (e. g. parity bit errors on 48 bit LVDS link, temporary
interruption of the selected LVDS link). If such an error occurs then the GAB/2 steps into a
Protection
state - any existing Gradient current is reset (the relay is switched off). After a
time-out the GAB/2 tries to re-initialize and reach the
Operate
state again.
In case of a severe error (e. g. break down of the supply voltage) the GAB/2 steps into the
Error state. It remains in this state until the client (e. g. TopSpin application) re-initializes the
GAB/2. Both, the severe and non-severe errors, are reported to the client (TopSpin
application).
10.5.5
Front Panel - Connectors
The gradient current connector is shown in detail in the block diagram (
).
Current flowing in the indicated direction induces a positive Z-Gradient. The monitor output is
a simple coaxial connector, e. g. for directly connecting a scope.
Usage of all front panel connectors is described in
10.6
Web Interface
Both, the specific low level drivers and the overall control logic for the GAB/2 are
implemented in the ELCB software. It provides setup and configuration for the operational
functions for the NMR application by a CORBA interface. In addition there is a Web access
available for service purpose (setup, calibration and diagnostic). Some of these Web
functions are open for all users (e. g. clients), other functions are reserved for service
engineers - it is necessary to log in and enter the required password before these functions
can be accessed (description in the BSMS Service Web chapter).
10.6.1
GAB/2 Service Web
The Submenu
Main
|
GAB
provides access to all service functions for a connected GAB/2
board. Depending on the number of connected boards there is a different set of commands
available.
Figure 10.6: Main Menu for the GAB/2 Subsystem
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...