A close cousin to the AvaSpec-ULS2048 but with larger pixels is the AvaSpec-ULS2048L.
It provides enhanced sensitivity at an affordable price. The AvaSpec-ULS2048L has pixels that are almost four times higher than those in the AvaSpec-ULS2048. It gives you twice the signal to noise ratio and 40% less dark noise.
Options include a deep-UV detector coating, for better performance in the deep-UV-range, a detector collection lens to enhance sensitivity in the 200-1100 nm range and order-sorting filter to reduce 2nd order effects. Furthermore, the AvaSpec-ULS2048L is available with a wide range of slit sizes, gratings and fiber-optic entrance connectors.
The AvaSpec-ULS2048L is also available in dual or multi-channel versions (up to 10 spectrometers), where all spectra are taken simultaneously.
Connection to your PC is handled via USB2-connection, delivering a scan every 1.8 millisecond. Integration time can be as short as 1.11 millisecond up to a maximum of 10 minutes. It comes complete with AvaSoft-Basic software, USB cable and an extensive manual , including a quick start guide in four languages.
| Optical Bench | ULS Symmetrical Czerny-Turner, 75 mm focal length |
| Wavelength range | 200-1100 nm |
| Resolution | 0.06-20 nm, depending on configuration (see table) |
| Stray-light | 0.04-0.1%, depending on the grating |
| Sensitivity in counts/µW per ms integration time | 470,000 |
| Detector | CCD linear array, 2048 pixels |
| Signal/Noise | 300:1 |
| AD converter | 16 bit, 2 MHz |
| Integration time | 1.11 ms – 10 minutes |
| Interface | USB 2.0 high speed, 480 Mbps RS-232, 115.200 bps |
| Sample speed with on-board averaging | 1.1 ms / scan |
| Data transfer speed | 1.8 ms / scan (USB2) 430 ms / scan (RS-232) |
| Digital IO | HD-26 connector, 2 Analog in, 2 Analog out, 3 Digital in, 12 Digital out, trigger, sync. |
| Power supply | Default USB power, 350 mA or with SPU2 external 12VDC, 150 mA |
| Dimensions, weight | 175 x 110 x 44 mm (1 channel), 716 grams |
| AvaSpec-ULS2048L-USB2 | Fiber Optic Spectrometer, 75 mm Avabench, 2048 pixel 14×200µm CCD detector, USB powered high speed USB2 interface, incl. AvaSoft-Basic, USB interface cable, specify grating, wavelength range and options |
