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This Gem
ini 200 console was replaced on 10 November 2008 with a Varian Mercury console and a Blade Sun computer under Solaris 9 (Unix) with Varian's software VNRM 6.1C.
It is equipped with a Narorac probe and is used primarily
for carbon analysis; however, it is also useful for most 2D experiments as well as proton analysis.
See the reservation protocol and the reset procedure after a power
failure.
The Sun Blade has FTP capability. The browser Opera has been installed because Netscape can not be used. Netscape remains in the menu.
The MERCURY spectrometer provide superior control, stability, and performance for high-productivity. Surface-mount electronics enable a small footprint without compromising data quality. Modular design allows flexible configuration. Direct digital synthesis, linear amplifiers, and other innovative RF and digital technologies enable push-button operation. Optimized for walk-up operation. MERCURY delivers superlative performance for direct and indirect detection analysis of liquid. Advances in component technology pack more power in less space making MERCURY a compact high-resolution NMR spectrometer.
A cutaway view of the Gemini magnet shown at the right was provided by Triangle Analytical.
The software for obtaining spectra uses the same protocols as the Unity 400. The window set up appears slightly different. When each users opens there account with a unique login name and password the VNMR software will be open along with a box on the right side of the screen which shows other software also minimized or open: terminal, file, and vnrm. Unlike the 400 MHz NMR the shim screen begin with fine Z1 and Z2 shim adjustments. Normally only the Z1C and Z2C coarse shims need to be modified for each sample.
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| * Shimming values for the Gemini are also kept in the Magnet Logbooks. |
Listed below are [Commands (C), Macro Commands (M), Display (D), and Parameters (P)] which are the same as for the other Varian system:
Command |
Type |
Meaning |
| ai | D | absolute intensity peaks are different heights (opposite of nm) |
| aph | D | autophase |
| aph0 | D | autophase on the zero phase |
| array | M | macro for setting a array |
| axis= | C | axis='p' display in ppm or axis='h' display in Hertz |
| best | M | Returns original best shims |
| calibrate | M | bring up calibrate menu |
| config | M | system configuration file (for vnmr1 only) |
| df | D | display fid |
| dg | D | display group parameters |
| dg2 | D | display group 2 parameters |
| dgs | D | display group shims |
| dpf | D | display peak frequency |
| dpir | D | display peak integral region |
| ds | D | display spectra |
| ds(#) | D | display spectrum (#) of an array |
| dss | D | display stacked spectra with manual settings |
| dssa | D | display stacked spectra with automatic spacing (up wards) |
| dssh | D | display stacked spectra horizontally (across) |
| f | D | display full spectrum |
| findpw(#) | M | macro for finding pulse width |
| ft | C | Fourier transform |
| full | D | display full screen |
| ga | C | get acquisition |
| go | C | get acquisition with wft |
| h2cal | M | calculates the GammaH2 |
| lp | D | left phase |
| lres2 | M | prints the "res" macros |
| lsn | M | list signal to noise prints S/N; or dsn |
| mtune | M | open sweep tuning menu |
| nl | D | nearest line |
| nm | D | normal mode all peaks same amplitude (opposite of ai) |
| page | P | sends plot data to printer/plotter |
| pap | P | plot all parameters |
| pl | P | plot spectrum |
| pdgs | M | Macro to print the current shim values |
| pl('all') | P | plot all spectra in array data |
| ppf | D | plot peak frequency |
| printoff | P | ends print run |
| printon | P | start print run (all text is printed until a printoff command is sent) |
| pscale | P | plot scale |
| ra | C | resume acquisition |
| res | M | gives 50%, 0.55% and 0.11% line widths in hertz |
| rl | D | reference line |
| rp | D | right phase |
| sa | C | stop acquisition -- halts acq for modifications (e.g. more nt's) |
| setgcal | M | calculates the gauss per dac (grad cal) value |
| svf | S | save fid (to /home/username/vnmrsys/data) |
| svs | S | save shims (to /home/username/vnmrsys/shims) |
| vo | D | vertical offset of stacked spectra |
| vp | D | vertical position of display |
| vsadj | D | largest peak to 80% |
| wft | C | weighed Fourier transform |
| wysiwyg | D | what you see is what you get (full screen spectrum display) |
When the system was not connected to the Internet nor was there RW CD but a 3 1/2 floppy drive then a USB (it must be FAT32) port could be used to save data. To save on a USB use the following commands, as root ( macro is available called usb which will type every thing but the stop and start commands).
Type: #/etc/init.d/volmgt stop INSERT the USB drive and wait, Type: #/etc/init.d/volmgt start wait and wait When open drag and drop the FID to the USB drive and type Type: #/etc/init.d/volmgt stop Type EJECT or select menu eject The USB drive can be removed and the data processed elsewhere. |
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