Ocean Optics LS-450 - Manual (Page 19)

3: R-LS-450 Rack-mount Setup and Operation
009-00000-450-02-201105 5
S2000 JP3 Pin Row ADC2000-PCI Frequency (Hz) ADC1000 Frequency (Hz)
/16 30.4 15.2
/14 120 60.8
/12 488 244.0
/10 1952 976.0
2 Controlled by flash delay in software
You can control the pulses per second of the R-LS0450 through the Flash Delay function in the software
if the following conditions are met:
 The switch is turned to Pulse mode
 The pins in JP1 on the R-LS-450 are jumpered
 The CS pins in JP2 on the R-LS-450 are jumpered
 The Remote pins in JP3 on the R-LS-450 are jumpered
 The pins labeled “2” in JP3 on the S2000 spectrometer are jumpered
Setting the Integration Time with the R-LS-450 and the
S2000
When using any of the pulsed modes and the R-LS-450, you must ensure that a constant number of
flashes occur for every integration cycle to ensure a continuous and stable signal. Set the integration time
in the spectrometer operating software.
To achieve a constant number of flashes per integration cycle, the integration time you select must be a
multiple of the times shown in the table below (depending on the A/D converter you are using).
S2000 JP3 Pin Row ADC2000-PCI Acceptable
Integration Times
ADC1000 Acceptable
Integration Times
/16 32 64
/14 8 16
/12 2 4
/10 2 4
2 Integration time must be a multiple of flash delay