The AS-161 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.
Different detector types can be connected to the electronics board interface connectors, such as TAOS Photo Diode Arrays TSL1301/TSL1401, Hamamatsu C-MOS detectors (for example S8378-256Q, S8378-1024Q) and Sony CCD detectors (ILX511, ILX554B).
The board is equipped with an additional sub D15 digital IO connector with 14 programmable IO ports (2 DI, 12 DO). One digital out port is used for controlling the flash rate of an external Xenon strobe (single or multiple flashes per scan), one digital out port is 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 used 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) I(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.
The board can be operated by the extensive AS-161-DLL with many functions to control the electronics board and data sampling parameters (see software section).
Multichannel (3 up to 8 channels) capability can be achieved connecting the master board (AS161M) with backplane connector to 1-3 slave boards (AS161S) with each 2 AD converter channels.
Technical specifications AS161
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
|
Data Transfer speed |
Sony ILX511/554 2048 pixels, 2 MHz
14-31 msec /scan (10-2048 pixels) for 1 channel
|
|
Hamamatsu 8378-256Q, 200 kHz
7-9 msec /scan (1 channel)
|
|
TAOS 1301/1401 2MHz, 6-7 ms/scan
|
USB interface |
Version 1.1, 12 Mbit
|
RS-232 interface |
Baudrate 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 |
162,5 x 100 mm, 97 gram
|
Ordering Information
| AS161 |
Microprocessor board with 2 channel 14-bit AD and RS-232/USB interface, specify detector type, see below |
| AS161M |
Microprocessor master board with 2 channel 14-bit AD and RS-232/USB interface and backplane connector, specify detector type, see below |
| AS161S |
Slave board with 2 channel 14-bit AD and backplane connector, specify detector type, see below |
| For All boards, specify detector type |
| -ILX |
for Sony ILX511 / 554B detectors (AvaSpec-2048) |
| -FT-ILX |
Fast trigger FPGA for LIBS and fluorescence for Sony ILX511 / 554B detectors (AvaSpec-2048FT) |
| -H8378-256 |
for Hamamatsu S8378-256 detectors (AvaSpec-256) |
| -H8378-1024 |
for Hamamatsu S8378-1024 detectors (AvaSpec-1024) |
| -TAOS |
for TAOS 1301/1401 detectors (AvaSpec-102/128) |
|
