L-TRX/L-19F
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11.2.6 2H Lock with L-TRX Internal Power Amplifier
Minimal system for 2H lock using internal power amplifier for gradient shimming only (no 2H
Observe or Decoupling capability). Set 2H-TX Control Router Address according to your
configuration (see 2H-TX Control (Router Address) [}110]).
Figure11.4: 2H Lock System with L-TRX Internal Power Amplifier for Gradient Shimming
11.2.7 2H Lock with Additional, External 2H Power Amplifier
A more powerful external amplifier can be used for 2H gradient shimming, 2H Observe and
2H Decoupling.
In order to mute the lock stimulus in real-time during 2H-Observer and 2H-Decoupling
experiments, the signal SEL_2H/DEC must be connected to the 2H-Amplifier and the L- TRX
unit.
Figure11.5: 2H Lock System with Additional, External 2H Power Amplifier
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