Carry-on Baggage Screening: XDAS 1.60 pages

X-ray data acquisition single & dual
energy XDAS-V3 1.6 mm pitch
1

key features

The XDAS-V3 system is the latest version of Sens-Tech X-ray
data acquisition systems. New features include:
16 bit A/D conversion
SNR 36000:1
Programmable dynamic range in steps of 1.875 pC up
to 15 pC
Gain can be set for each board in the system
Gain for low energy and high energy channels can be
set independently
Programmable bandwidth limiting to reduce noise
In-system programmable Xilinx FPGA
Detectors use new back-lit silicon photodiode arrays
Read back of all status and configuration parameters
50 µs minimum scan time for continuous operation
10 µs scan time for non-continuous operation
USB 2.0 and GigE interfaces to host
X-ray energy range 5 keV to 250 keV

2

description

XDAS-V3 is a modular system of boards for data acquisition in
X-ray line-scan, multi-view and CT systems. It consists of detector head (DH) boards, signal processing (SP) boards and data
interface board.
A single energy DH board has 64 detector channels. A dual
energy DH board has 64 low energy channels and 64 high energy channels. Detector boards can be butted end-to-end to
form a continuous array over 10 metres in length.
An optional low energy filter is used for enhanced low and high
energy separation.
DH boards with 0.4 mm, 0.8 mm and 2.5 mm detector pitch are
also available. See separate data sheets.

3

applications
security inspection
CT Imaging
multi-view imaging
non-destructive testing
food inspection
thickness measurement
foreign particle detection

4
integration time (single sample)
10 µs to 50 ms
sub-samples
1, 2 or 4
integration time (multiple samples)
200 ms (max)
SNR (electronic)
1.875pC
11000:1
15pC
18000:1
60pC
36000:1
SNR (<30pF detector capacitance)
1.875pC
6000:1
15pC
17000:1
60pC
34000:1
cross-talk (board to board)
<0.01%
cross-talk (channel to channel)
<0.1%
maximum read out rate
40 MB/s
non-linearity
<0.1%
A/D conversion
16 bit
data output
16 bits per pixel
detector pitch
1.6 mm
maximum number of signal processing boards
7
maximum number of data head boards
168
maximum number of channels
21504
power supply
(to interface board)
current

bone densitometry
industrial process control
mineral sorting

9 V to 30 V, 100 mVp-p ripple
200 to 900 mA (typical per SP)
125 mA (typical per DH)
100 to 500 mA (per interface board)

Interface board steps down input supply to 6V for DH boards
and SP boards

waste sorting

5

environmental specification

operating temperature
storage temperature
humidity (non-condensing)
operating
non-operating

+ 5 to + 35 ºC
-40 to +70 ºC
30ºC 93%
40ºC 93%