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Audio- and Vibration Measurement (SCU)

 

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.


Analog inputs:

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.


Analogue outputs

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.


Digital 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
    Counter
    PWM


Free relays

There are 4 freely switchable 6A/30VDC relay connections.


Expansion Boards

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


Customer-Specific Expansions

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 .


The price of the SCU is available on request.


ALLDAQ ADQ-62: ADQ-I2-STAR

Expansion of ADQ-LINK interfaces for the ALLDAQ ADQ-SCU

159,00 EUR

16 % VAT plus. excl. Shipping costs

Art-Nr.: 185077

ALLDAQ ADQ-SCU-RB

Relaisboard for Signal Condition Unit, ADQ-151, etc.

315,00 EUR

16 % VAT plus. excl. Shipping costs

Art-Nr.: 150554

ALLDAQ ADQ-SCU-PB

Powerboard for Signal Condition Unit (SCU)

685,00 EUR

16 % VAT plus. excl. Shipping costs

Art-Nr.: 150555
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