Ocean Optics S1024DW Install - Manual (Page 19)

16
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 S1024DW (JP3). The integration time is
controlled via the operating software. To achieve a constant number of flashes per integration cycle, the
integration time must be a multiple of those shown in the following table:
S1024DW JP3 setting
Integration time must be a
multiple of
2
16
(factory default) 128
2
14
32
2
12
8
2
10
N/A
The PX-2 repetition rate is controlled via the S1024DW (JP3), but is also dependent upon the frequency of
your A/D card. With the S1024DW, the SAD500 operates at 200 kHz, the fastest rate the S1024DW allows
the SAD500 to operate. The table below shows the rep rate for the various combinations of hardware and
jumper settings. (Note that the default setting from the factory is 2
16 .)
JP3 Post # Function Frequency (Hz)
1 Not enabled - for future software control
2 Divide by 2
10
195
3 Divide by 2
12
48.8
4 Divide by 2
14
12.2
5 Divide by 2
16
3.1
Specifications
Spectral range: 220-750 nm
Approximate dimensions:
•
14 cm x 10.5 cm x 4 cm (LWH)
•
5.5 ” x 4.1 ” x 1.5 ” (LWH)
Power input:
•
1.3 A @ 11V @ 220 Hz
•
100 mA @ 12V @ 10Hz
Trigger input: external TTL positive pulse via 15-pin connector
Output:
•
45 millijoules per pulse maximum
•
9.9 watts average power
•
220 Hz pulse rate maximum
Pulse duration: 5 microseconds (at 1/3 height of pulse)
Lifetime:
10 9 pulses (estimated 230 days continuous operation at 50 Hz
pulse rate)
Aperture: 3 mm
Connector: SMA 905
Timing signals available from
S1024DW spectrometers:
•
Multiple mode = up to 220 Hz (varies with A/D sampling
frequency)
•
Single mode = varies with scan rate