Operating & Service Manual Version 002
BRUKER BIOSPIN
25 (51)
Theory of Operation
BLA Control Board
5.2.2
The BLA Control Board has 3 main functions:
1. Conditions the input blanking (BLNK) signal and delivers it to the above
mentioned RF Paths.
2. Allows Ethernet communication with the workstation.
3. Monitor the output characteristics of the amplifier thanks to the DC peak
detection of the bi-directional coupler.
Electronic circuitry processes the detection information and protect the
amplifier from overstress like :
•
Forward and reflected peak power
Figure 5.4. Peak Power Limitation
The peak power limitation is the maximum RF forward shape amplitude
allowed at the amplifier output.
Limitation range : from 1% to 200% of nominal power.
The peak power limitation is checked for each sample (10 million samples
per second), and the maximum peak value is latched then cleared by a
read operation (for monitoring purpose).
•
Forward pulse width
Figure 5.5. Forward Pulse Width Limitation
MAX. RF SHAPE AMPLITUDE
FORW. OR REFL.
RF SHAPE
FORW. RF SHAPE
PW LIMIT
IF POWER > 100% NOMINAL POWER THEN FAULT DETECTION
Summary of Contents for BLAH500 E
Page 6: ...6 51 BRUKER BIOSPIN Operating Service Manual Version 002 General Information ...
Page 10: ...10 51 BRUKER BIOSPIN Operating Service Manual Version 002 Safety ...
Page 14: ...14 51 BRUKER BIOSPIN Operating Service Manual Version 002 Installation ...
Page 28: ...28 51 BRUKER BIOSPIN Operating Service Manual Version 002 Technical Description ...
Page 44: ...44 51 BRUKER BIOSPIN Operating Service Manual Version 002 Specifications ...
Page 48: ...48 51 BRUKER BIOSPIN Operating Service Manual Version 002 Figures ...
Page 50: ...50 51 BRUKER BIOSPIN Operating Service Manual Version 002 Tables ...
Page 51: ...Operating Service Manual Version 002 BRUKER BIOSPIN 51 51 End of Document ...