The PQA is a basic four-channel voltage/ICP® conditioning module. Each channel has an individually programmable input range, with AC/DC/ICP® coupling, and an analog A-weighting filter. The PQA has grounded BNC inputs.- Input range ±62.5mV to ±10V
- 4mA ICP® supply
- Analog A-weight filter
Programmable Quad Floating Amplifier (PQFA)
The PQFA adds a number of features to the basic PQA concept. Floating inputs eliminate the risk of ground loops, and an analog programmable high pass filter removes unwanted low frequency components. Smart transducers (TEDS) can be connected directly to the PQFA module. It helps users to drastically reduce the setup time and even more important, to avoid cabling errors, which can possibly call for a rerun of the measurement.- Input range ±100mV to ±10V
- Floating / single ended inputs
- 4mA ICP® supply
- 5 to 75Hz programmable high pass filter
- TEDS support
Programmable Quad Microphone Amplifier (PQMA)
The PQMA is ideal for vibro-acoustic measurements. It can connect four conventional, prepolarized or ICP® microphones, as well as force transducers, or voltage inputs. The analog high-pass filter optimizes the use of the ADCs dynamic range.- Input range ±62.5mV to ±25V
- Semi differential inputs
- 4mA ICP® supply
- 1 to 255Hz programmable high pass filter
- 200V polarization voltage
- 30 or 60V preamplifier supply
Programmable Quad Charge Amplifier (PQCA)
The PQCA can connect four conventional piezoelectric accelerometers to the system using microdot connectors and the built-in charge amplifier. The PQCA has an exceptionally high dynamic range for the most demanding structural measurements.- Input range ± 25pC to ± 51200pC
- Single ended inputs
- 0.5 or 5Hz high pass filter
Programmable Quad Bridge Amplifier (PQBA)
The PQBA supports four channels of strain transducers - and those based on the same principle, such as piezoresistive or variable capacitor sensors. Full, half, and quarter bridge configurations are supported, with bridge completion resistors fully software switched. Automatic bridge nulling uses current injection techniques.- Input range ±5mV to ±1V
- Fully differential inputs
- Maximum ±5V bridge supply with sense mechanism
- Bridge nulling and calibration using accurate current injection techniques
Quad Digital Audio Module (QDA)
Supporting AES/EBU and SPDIF data formats, the QDA is a dedicated module specifically designed for artificial heads. The QDA accepts 16 or 24-bits data and all standard audio sample rates. HMS data is retrieved from the audio stream and separately sent to the host. Because the QDA resamples the input data to the standard internal sample rates, the output data of QDA is fully compatible with data from other modules. Therefore, digital audio measurements can be done in parallel (synchronous) with other measurements.- Support of AES/EBU and SPDIF Input data at all standard rates
- Support of HMS data
- Synchronization of digital audio streams with other inputs
- All processing functions, including filtering, order tracking and 1/3rd octave are available
Programmable Dual Tacho Module (PDT)
The tacho module allows order tracking as well as spectral/octave acquisitions against rpm. Tacho signals up to 15kHz and 1024 pulses per rev are supported, while auto ranging inputs and programmable signal conditioning ensure that even ‘industrial quality’ analog tacho signals with noise and changing amplitudes will result in stable readings.- Auto ranging differential input
- Bias voltage compensation from –5V to +5V
- 40ns tacho counter resolution
- Tacho preview with 16-bit ADC
- Double and missing pulse compensation
- rpm smoothing filter
Quad Torsional Vibration Module (QTV)
The QTV is a four-channel tacho input module, designed for the acquisition and analysis of torsional vibration phenomena. Through the use of high bandwidth ADCs and dedicated embedded processing, the QTV is able to detect and represent high frequency tacho variations with a precision that exceeds that of conventional (counter based) solutions. QTV dynamic rpm data is acquired with 24-bit precision and is perfectly synchronous with all other LMS input channels. The LMS SCADAS III QTV module offers a dedicated solution for highly accurate torsion analysis of rotating objects. - Input range ±62.5mV to ±25V
- Maximum tacho frequency 50kHz
- Acquisition synchronous with all other LMS input channels
- Frequency independent resolution
