Ocean Optics S2000 - Manual (Page 43)

PX-2 Pulsed Xenon Lamp
The PX-2 P ULSED X ENON L AMP is a high flash rate, short-arc xenon lamp for applications involving absorbance,
reflection, fluorescence and phosphorescence measurements. The PX-2 operates at speeds up to 220 Hz and offers
critical pulse-to-pulse stability.
Parts Included
" PX-2 Pulsed Xenon Lamp
" 15-pin cable for connecting the PX-2 to the spectrometer
" 12V DC wall transformer for supplying power to the PX-2
Caution!
The beam emerging from the PX-2 produces ultraviolet radiation. Direct contact with the beam could cause eye
injury. Never look directly into the light source.
Dangerous voltages present. Never operate the PX-2 without its housing intact.
! !
The SMA connector may get HOT during operation.
! !
This instrument should not be used for any clinical or diagnostic purposes.
! !
Handle with care. Dropping the instrument may cause permanent damage.
Operation
The lamp is triggered with TTL pulses delivered through the 15-pin connector located at the rear of the unit. Our
S2000-series spectrometers and software, or any source of TTL signals, supplies these pulses. The lamp is powered
by a 12V DC transformer, or from a 12V battery if field use is desired.
1.
Plug the wall transformer into a 110V outlet. Plug the other end of the cord into the jack at the rear of the PX-2.
2. Install the 15-pin cable into the rear of the PX-2. Connect the other end to the 15-pin connector on an S2000.
3. Connect an optical fiber to the SMA-terminated fiber optic port on the front panel.
4. Turn the power switch located at the rear of the source to the “ON” position.
5. Select either “MULTIPLE” or “SINGLE” flash mode by moving the toggle on the rear of the source.
6. Configure OOIBase32 operating software to operate the PX-2. In the Acquisition Parameters dialog bar,
check the S2000 Strobe Enable box. You can also enable this function by selecting Spectrum | Configure
Data Acquisition from the menu and then choosing the Strobe page of the dialog box.
7. The flash should fire with a clearly audible “ping.”
Application Tips
Single Flash Mode
Using the Single flash mode results in one flash per integration cycle. Since the PX-2 has a maximum repetition rate
of 220 Hz, the minimum integration allowed in this mode is 5 milliseconds.
Multiple Flash Mode
When using the Multiple flash mode the user needs to ensure that a constant number of flashes occurs for every
integration cycle by setting the pulse rate and integration time. This achieves a continuous and stable signal. The
pulse rate is determined by a jumper setting inside the S2000 (JP3). The integration time is controlled via the
Light Sources: PX-2
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