AVANCE OneBay General Description

AQX/P

The acquisition control system AQX/P generates all digital control signals as specified by the user’s pulse program. The CCU runs as a "diskless UNIX" client and controls the TCU, 2 FCU’s, RCU and GCU. The TCU controls all timing and pulses. The FCU’s generate RF phases, frequencies, and control the RF amplitudes. Amplified, demodulated and digitized NMR signals are fed to the RCU which performs real time digital filtering and accumulation. The optional GCU generates the gradient shapes for GRASP experiments.

AQR/P

The acquisition rack AQR/P contains all the RF/ AF components for signal routing, transmitting and receiving purposes. The NMR signal is mixed down to audio frequency by the RX22 receiver system and then converted to digital data by the ADC. The local oscillator frequency is derived from the ASU/LOT module.

Synthesizer

The excitation signal for each channel is generated by combination of the appropriate FCU and synthesizer.

RF Transmitter

The linear RF transmitters generate both pulsed and CW frequencies for each channel with appropriate amplitudes.

BSMS

The BSMS unit provides NMR sample control (SLCB), shim (SCB) and H0 current (LCB) control, houses the digital lock (LTX, LRX) and the optional gradient amplifier (GAB).

HPPR preamplifier module

The HPPR amplifies, filters and routes the NMR response signals from the probe to the RX22 receiver. It switches the RF transmitter output to the probe.

Probes

General information common to most probes can be found here. See the appropriate NMR probe documentation for details.

Magnet

General handling and maintenance information for all magnets can be found here. Specific documents are supplied with each magnet.

Sample Changer (optional)

Bruker Automated Sample Changer's (BACS) allow the user to easily and effectively perform automatic experiments.