Baseboard for Signal Condition Unit (SCU) for connection to ADQ-344.
AI part
32 analogue inputs
AC/DC coupling
Digital filter stage
Adjustable attenuation/amplification
Monitoring output for headphone connection
4 digital trigger inputs
AO part
4/8 analogue outputs
Single-ended/differential switching
Mute switching (mute)
4 digital triggering levels
Other features
Temperature monitoring of the baseboard with threshold value setting and opto-decoupled alarm output
3 slots for customised plug-in modules
PWM output (opto-decoupled)
Input for ignition signal "terminal 15" (opto-decoupled)
8 isolated digital inputs
8 isolated digital outputs
Overall control via I2C bus
Supplies can be switched via relay (4 x +5V/4A; 4 x +12V/4A)
Supply via PC power supply unit (+5V, +12V)
The ALLDAQ SCU (SCU = Signal Conditioning Unit)
We have worked with some customers to design a module that offers a variety of options for adapting signals between the DUT and the actual measurement mimic.
Analogue inputs:
The intended measurement card, the ALLDAQ ADQ-348, has 32 differential channels, each of which can be individually conditioned using the SCU.
When a raw signal is connected to the SCU, it goes through the following steps:
Input coupling: You can set either DC or AC coupling here.
Attenuator: In order to reduce a high voltage to the level of the actual input, a gain between 0 and -47.95dB can be set here.
Adaption: To increase a low voltage to the level of the actual input, the respective gain is set here between +12.04 and +33.85dB.
Amplifier and Digital Filter: To refine the signal even further, a low-pass filter and further amplification can be added.
Analogue outputs
The analogue outputs are also individually customisable. Each of the 4 channels is divided into two paths, which in turn can be individually amplified, defined as a single-ended or differential output or switched as a 50 ohm termination. This results in 8 analogue channels.
Digital channels
All the functions that the ADQ-348 also offers are also provided by the ADQ-SCU. These include, for example:
Triggers for the analogue inputs
Triggers for the analogue outputs
1x 8 bit port digital inputs up to 35V
1x 8 bit port digital outputs up to 35V
2 x 8 bit port bidirectional digital I/Os, TTL
Zähler
PWM
Power relay
For simple switching of loads, there are 8x 6A/30VDC relays, which are each switched in pairs. Here, the inputs and outputs are not connected to the measuring card.
Expansion boards
Since all SCU functions are controlled using I²C, it is possible to design additional functions and expansion modules. For example, 2 mezanine boards are currently available.
The power board:
Two high-current relays up to 50A/100VAC per relay
4x additional power supply relays up to 5A/35VDC with a sense line at the input as a read/write 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 additional supply relays up to 5A/35VDC
Customised
Due to the flexibility offered by the control via I²C, it is possible to quickly realise customer-specific plug-on boards. Please also contact us if you would like to realise an adaptation to another board. Our team of hardware and software specialists will help you to realise your project quickly.
Justageadapter für Signal Conditioning Unit (SCU) zum Aufstecken auf ADQ-SCU-ADJ.
5 schaltbare Kalibrierspannungen
1 schaltbare Stromsenke 100/200uA
Version 1.2
Powerboard für Signal Condition Unit (SCU) zum Aufstecken auf ADQ-SCU-BB.
Power-Aufsteckboard (I2C-gesteuert)
2 x Hochstrom-Relais bis max. 12V/100A je Relais (Senseleitung am Relaiseingang)
4 x Versorgung (U3..6) schaltbar via Relais max. 80V/5A je Relais (Senseleitung am Relaiseingang)
4-Kanal Leistungsmessung für U3..6
Maximale Spannung der Power-Messkanäle: 20,48V
Powerboard für Signal Condition Unit (SCU) zum Aufstecken auf ADQ-SCU-BB.
Power-Aufsteckboard (I2C-gesteuert)
2 x Hochstrom-Relais bis max. 12V/100A je Relais (Senseleitung am Relaiseingang)
4 x Versorgung (U3..6) schaltbar via Relais max. 80V/5A je Relais (Senseleitung am Relaiseingang)
4-Kanal Leistungsmessung für U3..6
Maximale Spannung der Power-Messkanäle: 20,48V
Relaisboard für Signal Conditioning Unit (SCU) zum Aufstecken auf ADQ-SCU-BB.
Relais-Aufsteckboard (I2C-gesteuert)
16 Wechsler-Relais (SPDT, Finder Serie 34), max. 30VDC/6A
8 Wechsler-Relais (DPDT, Typ FTR), max. 30VDC/1A, 125VAC/0,3A
