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Our offer is directed exclusively at commercial customers in the sense of §14 BGB.
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
ALLDAQ ADQ-SCU-RB
Relaisboard for Signal Condition Unit, ADQ-151, etc.
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