The Quantum series‘ digital transceiver integrates transmitter, receiver, frequency synthesizer, and DDS. This architecture enables each channel independent capability of transmitting and receiving , inherently supporting parallel acquisition NMR experiments. Leveraging advanced high-IF technology, the Quantum series effectively enhances spectral purity and achieves excellent RF power linearity. Compared with the Quantum IPlus console, the Quantum II console delivers faster control speed, improved dynamic range, and higher scalability.
High-Precision Pulse Sequence Control: The Quantum series console provides nanosecond-level minimum event time resolution to control dynamic changes in pulse frequency, phase, and amplitude. The pulse sequence programmer precisely controls the synchronization and asynchronization of multi-channel pulse sequence. Combined with gating control of pulsed-field gradients, it allows for the implementation of complex experiments such as broadband adiabatic decoupling, multi-solvent suppression, and pure shift measurements.
Broadband RF Power Amplifiers and Preamplifiers: The Quantum series console is equipped with RF power amplifiers for the H channel and broadband channel. The broadband channel of 400 MHz console supports a wide frequency range from low-frequency nuclei to high-frequency 19F, covering most of NMR-active nuclei. With low-frequency output power exceeding 300W and high-frequency output power exceeding 100W, the excellent power linearity meets the requirements of experimental designs such as broadband decoupling and selective excitation. The broadband preamplifier employs a low-noise design to achieve maximum sensitivity. The fast transmit-receive switching function ensures the stability of signal transmission and channel isolation.
Advanced Digital Lock: The Quantum series lock module provides field-frequency locking on ²H signals. Its fully digital PID loop control enables rapid, high-precision responses to lock frequency and phase, effectively suppressing the impact of magnetic field fluctuations. Additionally, the Quantum II lock module features a high-precision "transceiver" function, allowing peak-selective locking for deuterated solvents with multiple peaks. Equipped with an independent ²H lock RF power amplifier, it also enables ²H acquisition and decoupling. |  |
| High-Resolution Shimming: The Quantum series is equipped with a high-precision digital shimming system. It offers 16 bit, 32 sets of shimming channels for 400 MHz spectrometer, and 20 bit, 39 sets of matrix shimming channels for 500MHz and 600MHz spectrometers (higher digital resolution). Gradient shimming represents the most efficient automatic shimming technology, and the Quantum series supports both ²H and ¹H 1D/3D gradient shimming. Additionally, it enables non-deuterium gradient shimming for samples without deuterated reagents in specific scenarios. |
Remote Control and Automation Functions: The Quantum series console features a built-in acquisition computer, allowing the spectrometer to operate independently of the main workstation. Remote access from any network terminal enables data acquisition, processing, and real-time instrument status monitoring. Its distributed, modular design enables independent or collaborative functioning bwtween auto-samplers, tuning controllers, temperature and pneumatic controllers, and RF transceivers —enhancing the system’s intelligent interactivity and ensuring stability for long-term (24/7) automated experiments.
