Spectral Sensor Multiplexer MUX-8A0 pages

Electronic 8 Channel
Spectral Sensor Multiplexer
In der Au 27
61440 Oberursel / Germany

MUX-8A for FEE-HS

Phone: +49 (0) 6171 / 9758 – 0
Fax: +49 (0) 6171 / 9758 – 50
E-Mail: sales@tec5.com
Internet: www.tec5.com

Product-ID: 06303.10
Document: ds_mux-8a_102e.doc

Operating Modes
In mode of operation ‘sequential’, the multiplexer acts
like a static input switch for up to 8 sensor modules
attached. The size of a spectral data array is equal to
the number of pixels of the active sensor.

Short Description
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Active input multiplexer
for Front End Electronics FEE-HS
8 sensor input channels
Mode ‘sequential’: 1 of 8 cannels
Mode ‘simultaneous’: Fixed channel combinations Ch1&Ch2, Ch1&Ch2&Ch3, up to
Ch1&Ch2&Ch3&Ch4&Ch5&Ch6&Ch7&Ch8
Input from device: Spectral Sensor or Preamp.
Output to device: Front End Electronics
Typically mounted as sandwich board on
Front End Electronics
PCB dimensions 87 mm x 67 mm
(FEE form factor)

In the operation mode ‘simultaneous‘, a predefined
combination of two to eight sensors can be read out
almost concurrently with the MUX-8A. To achieve this,
the multiplexer interleaves the spectral data of the single sensors pixel by pixel. So, the scans are overlapping with a time shift of only one pixel readout clock
(approx. 5 µs with FEE-HS). The selectable combinations are Ch1&Ch2, Ch1&Ch2&Ch3, Ch1&Ch2&Ch3&CH4 until Ch1&Ch2&Ch3&CH4&Ch5&Ch6&Ch7&CH8.
The size of a spectral data array is equal to the sum of
the number of pixels of all the active sensors.
The multiplexer operating mode (the active sensor or
the combination) is selected by software and transferred to the MUX-8A via the Front End Electronics of
the Operating Electronics.

Supported Sensors
The following compatible sensor modules are currently
available:
• MMS - Spectral Sensors (not MMS NIR)
• MCS - Spectral Sensors (equipped with Preamplifier
Electronics type DZA-S3901-4)
• the Preamplifier Electronics DZA-S3901-4

General

Additional Features

In conjunction with the Front End Electronics FEE-HS
the Electronic Spectral Sensor Multiplexer MUX-8A
allows to operate up to 8 identical sensor units (PDAs
with Preamplifier Electronics or Spectral Sensors based
on these arrays).

• Local non-volatile memory
256 Bytes capacity
• MUX-8A can not be used together with the Spectral
Sensor Controller Unit MOE-C161

In the signal chain following the multiplexer, signals
from all sensors pass identical circuitry for video data
processing and analog-to-digital conversion, so that all
measurement channels are influenced in an identical
manner by potential inaccuracies of electronics.

Power consumption:
• +5V_analog / -5V_analog:
• VCC(+5V_digital):
• +12V_analog:
• -12V_analog:

The sensor interface corresponds to specification ‘Sensor_1A’. The interconnection to each sensor module is
done by a miniaturized coax line and a 10-pin flat ribbon
cable.

Environmental conditions:
• Temperature range, operating:
0 °C ... 60 °C
• Temperature range, storage:
-40 °C ...+70 °C
• Humidity (@25°C, non condensing): 10 % ... 90 %

current of sensors only
typical < 110 mA
typical < 5mA
typical < 5mA