Output Modules

Quad Digital to Analog Converter (QDAC)

Output signals with ultra-low distortion and noise are ensured by the use of 24-bit digital to analog bit stream converters, analog and digital reconstruction filters, and up-sampling digital filters with noise shaping. The four channel QDAC module includes firmware to support sine, random, burst sine or random, chirp and arbitrary signal generation. This output module is also available in a two channel variant (DDAC).

The VDAC is a versatile dual channel output module for applications such as vibration control testing and time waveform replication, but also for Multiple Input Multiple Output (MIMO) modal testing. It can be used as an advanced signal generator or to replay signals that are generated on the host computer. To assure a true replay of the original signals, ultra-low distortion digital interpolation filters are used. Dedicated hardware circuits guarantee smooth shutdown of the output signals, even in case of power failure, to protect the structure under test.

The QMO is a four-channel output module for SCADAS III. As an output amplifier, it provides an analog output of one of the stacked signal conditioners. The output amplifier is AC coupled. The QMO modules support recording in parallel to the normal acquisition via the SCADAS III on e.g. a tape recorder in data reduction systems.