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The AS161 is a modularly designed electronics board with a 16-bit microprocessor, 2 channel 14-bit AD converter and USB/RS232-interface. The AS-161 electronics board is a part of the AvaSpec spectrometers and can control 2 Avabench spectrometer channels. 
Sony CCD detectors (ILX511, ILX554B) are connected to the electronics board interface connectors.
The board is equipped with an additional sub D15 digital IO connector with 14 programmable I/O ports (2 Dl, 12 DO). One digital out port is reserved for controlling the flash rate of an external Xenon strobe (single or multiple flashes per scan), one digital out port can be used to control external TTL-shutter devices, for the AS-161-FT-ILX one digital output is reserved for external control for flashing a laser source in LIBS applications. One digital in is reserved for external hardware trigger.
The on-board firmware controls the simultaneous data-sampling of the 2 channels, the sampled data is processed through a F(irst) l(n) F(irst) O(ut) interface with possibility of speeding up data transmission time by data reduction, defining a start and stop pixel per channel. The gain and offset parameters can be adapted per channel as well. The Firmware controls the USB and/or RS-232 interface.
Technical Data
| Microprocessor |
Infineon, C161RI, 16 bit, 24 MHz |
| Memory |
128 K EEPROM, 128K RAM, 8 bit |
| A/D converter |
14 bit, 2 channels |
| Integration time |
2ms - 60 seconds |
| Sony ILX511/554 2048 pixels |
2 MHz, 14-31 msec /scan (10-2048 pixels) for 1 channel |
| Hamamatsu 8378-256Q, 200kHz, 7-9 msec /scan for 1 channel |
| TAOS 1301, 2MHz, 6-7 ms / scan for 1 channel |
| USB interface |
Version 1.1,12 Mbit |
| RS-232 interface |
Baud rate 115200 bps, DB-9 female connector |
| Power supply |
12 VDC, reverse polarity protection, 160 mA (+ 20 mA per detector) |
| Temperature range |
0 - 55 °C |
| Dimensions, weight |
162.5x100 mm, 97 gr. |
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