Litron Laser Timing Control (Stanford DG645)
Litron Laser Timing Control is an extension of the DG645 IOC made for HIFI to use. It replaces the LabView functionality as described here.
By setting a delay and offset the following calculation is done.
dC_0 = Delay + Offset in us
Under the following constraints:
If mode is 1:
if dC_0 + Delay + Offset > 39900 us
or Delay + Offset < 0 us
then:
Error State
If mode is 2:
if Delay + Offset > 39900 us
or dC_0 + Delay + Offset <= 0 us
then:
Error State
When the user tries to set the mode then the following is applied:
If IOC mode is 1 or 2 then:
Set device mode to be 1 or 2 respectively
else: # IOC mode is auto
if Delay > Offset then:
Set device mode to 1
else:
Set device mode to 2
Note that IOC mode is not the same as device mode. IOC mode refers to a value of auto or 1 or 2, the device mode refers to which configuration/setting slot the DG645 is in (0-9). IOC mode 1 and 2 refers to device setting slots 1 and 2.