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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 .


Different Models are available

In this table you can see the functionality of each model of SCU.

  ALLDAQ SCU Series
Options SCU Full SCU Full LT SCU Light SCU Light LT
Analog AC/DC voltage measurement inputs 32
(max. 78 Vp)
32
(max. 78 Vp)
32
(max. 28 Vp)
32
(max. 28 Vp)
Analog AC/DC voltage generator outputs 8
(max. 14 Vp)
8
(max. 14 Vp)
4
(max. 10 Vp)
4
(max. 10 Vp)
Analog input ranges (in/out) 4/2 4/2 fix/fix fix/fix
Programmable AC/DC coupling X X Jumpers Jumpers
Programmable LF filters X X - -
AUX relays X X - -
Monitor outputs X X - -
Headphone outputs X X - -
Power DIO X X X X
Standard I2C ports for external expansions X X X X
Buffered I2C ports for external expansions X X X X
ADQ-LINK ports for external extensions X X X X
Dedicated current measurement channels X (X) X (X)
Power Board X - X -
GPIO Relay Board X - X -

 

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

19 % VAT plus. excl. Shipping costs

Art-Nr.: 185077

ALLDAQ ADQ-SCU-RB

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

315,00 EUR

19 % VAT plus. excl. Shipping costs

Art-Nr.: 150554

ALLDAQ ADQ-SCU-PB

Powerboard for Signal Condition Unit (SCU)

912,00 EUR

19 % VAT plus. excl. Shipping costs

Art-Nr.: 187912
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