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IDR150
Double Monochromator
 
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Optical Layout
Configuration Pair symmetrical Czerny Turner monochromators, additive dispersion
Focal length - Total focal length: 300mm
- Individual units: 150mm
Grating mount Kinematic
Number of gratings 1 pair
Grating size 33 x 33mm
Aperture ratio f/4
Number of entrance/exit ports 1 entrance, 1-2 exits
Spectral range Within range 200nm-2400nm
Opto-Mechanical
Wavelength scanning By integrated stepping motor and micro-stepping drive electronics
Slit type Fixed, micrometer or motorised variable
Slit width & height 10µm-10mm (W) x 20mm (H)
Filter size - 6 position filter wheel : 25mm diameter
- 8 position filter wheel : 22mm diameter
Optical Performance (quoted for typical 2400 g/mm gratings)
Spectral range 200-600nm
Linear dispersion 5.4nm/mm
Wavelength accuracy ¡¾ 0.15nm, ¡¾ 0.05nm with software correction
Wavelength reproducibility ¡¾ 0.05nm
Resolution full/reduced slit height 0.25/0.1nm
Stray light rejection at 2.5 FWHM 10-8
Wavelength sweep speed 30nm/s
487 Dual-Channel Picoammeter Module - Electrical
Channel 1 input Current input to picoammeter
Channel 2 input Current input to picoammeter
Gain ranges 1010-105 V/A
Maximum current input 100µA
Frequency response DC to 30Hz
Gain accuracy +1%
Gain stability 200ppm/¡ÆC
Output stability 5ppm/¡ÆC to 500ppm/¡ÆC depending on sensitivity
Linearity < 0.025% departure from linearity from zero to full scale
ADC resolution 4¨ö digit BCD (0 to 19999) i.e. > 14 bit resolution
ADC integration time 100ms
Auxiliary input range 0- 9.8V
Picoammeter input impedance Virtual earth
Auxiliary input impedance 1 M§Ù
 
 
 
 
 
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