Setting Frequencies

The commands 'o1', 'o2' and 'o3' set the frequency of the transmitter, the decoupler, or the second decoupler from the list 'F1LIST', 'F2LIST' or 'F3LIST', respectively.
As soon as the next 'o1, o2', or 'o3' command is encountered, the next value of the corresponding list is taken.

The following example shows the format of frequency lists:

0 500.13    # absolute frequency in MHz, preceding capital O 
3000        # offset to absolute frequency in Hertz
4000

Frequency lists contain one 'offset' frequency (in Hz) per line. The first line contains the absolute frequency in MHz for the corresponding nucleus. The transmitter frequency results as the sum of the absolute frequency and 'offset'.

NMR Interface:

The commands 'o1,o2,o3', all need 3 msec for execution, but may also be executed during a specified delay.

MCI Interface

The time needed to switch by, e.g., 20 MHz, should be ca 5 usec.

Example:

'd1 o1 ; set transmitter frequency during d1'

Questions, comments to: Rudi Nunlist rnunlist@bloch.cchem.berkeley.edu

Last Update: 1/20/95. RN