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The ALLDAQ SCU (SCU = Signal Conditioning Unit)
Together with some customers, we have designed a board that offers a variety of possibilities to adjust signals between the DUT and the actual measurement mimic.
The intended measurement board, the ALLDAQ ADQ-348, has 32 differential channels, each of which can be individually conditioned by the SCU.
When an input signal is connected to the SCU, it goes through the following steps:
Input Coupling: Here you can set either DC or AC coupling.
Attenuator: To reduce a high input voltage to the level of the actual input of the DAQ board, an attenuation between 0 and -47.95dB can be set here.
Amplifier: To increase a low input voltage to the level of the actual input of the DAQ board, the required gain can be set between +12.04 and +33.85dB.
Amplifier and Digital Filter: To further refine the output signal, filter poles (low pass filter) and other amplification can be added.
The analog outputs are also individually adjustable. Each of the 4 channels is divided into two paths, which in turn can be individually amplified, defined as single-ended or differential output or switched as 50Ohm termination. This results in 8 analog channels.
All digital functions that the ADQ-348 offers are also provided by the ADQ-SCU. These include e.g:
Trigger for the analog inputs
Trigger for the analog outputs
1x 8 bit port digital inputs up to 35V
1x 8 bit port digital outputs up to 35V
There are 4 freely switchable 6A/30VDC relay connections.
Since all functions of the SCU are controlled by I²C, it is possible to design additional functions and expansion modules. Currently 2 mezanine boards are available.
The power board:
Two high current relays up to 50A/100VAC per relay
4x further supply relays up to 5A/35VDC with a sense line at the input as read-back option, e.g. to a laboratory power supply.
4-channel power measurement for the channels of the supply relays
Up to 8x I²C addresses can be set via a rotary switch.
The relay board:
32 further supply relays up to 5A/35VDC
Due to the flexibility provided by the control via I²C, it is possible to quickly design customer-specific plug-in boards. Please also contact us, if you want to realize an adaptation to another measurement board. Our team of hardware and software specialists will support you to quickly realize your project .
Expansion of ADQ-LINK interfaces for the ALLDAQ ADQ-SCU
Relaisboard for Signal Condition Unit, ADQ-151, etc.
Powerboard for Signal Condition Unit (SCU)
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