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ProDAQ 3450 2-Channel Transient Recorder Function Card
The Transient Recorder Function Card features simultaneous sampling with 14-bit resolution and 3 MSamples/sec. maximum sampling rate. The Transient Recorder Function Card has 512 kSamples of memory per channel with optional battery back-up. The memory can be configured into smaller blocks called segments. Each segment is then treated as an independent waveform memory and needs its own trigger to start post-trigger recording. Segments can be freely divided into pre- and post-trigger sections. A trigger can be received from the VXIbus or from the front-panel trigger input or can be derived from the input signal. There are two trigger modes related to the input signal: positive/ negative slope or positive/negative slope with hysteresis. The ProDAQ 3450 Transient Recorder Func-tion Card has an online channel monitoring possibility. During recording, access to the mem ory is reserved for the ADC data (single-ported memory). A monitoring register gives a possibility of reading the current values of the sampled signal without interrupting the recording. The ProDAQ 3450 Transient Recorder Function Card can work either in stand-alone mode or controlled by a ProDAQ 3451 Trigger/Clock Function Card. In the later case the Trigger/ Clock Function Card generates the sampling clock and distributes the trigger signals to/from the Transient Recorder Function Cards. The sampling clock and trigger signals are routed through either the VXIbus trigger lines or externally via front-panel cable connections. The Trigger/Clock Function Card stores the information about segment-to-segment timing. This information can be used to reconstruct the timing of a waveform stored in several segments. The sampling clock generated by the Trigger/Clock Function Card is derived either from an on-board oscillator or from an external source. In the case of the on-board oscillator the user can use a powerful dual time base mode which defines different sampling frequency for pre-trigger, near post-trigger and far post-trigger recording. The dual timebase option allows the memory to be used more efficently by changing the sampling clock frequency. The input signal can be sampled at different speeds. Low-speed sampling and high-speed sampling can be used for parts of the input signal of low and high interest, respectively. Dual timebase option requires the post-trigger section to be divided into a near post-trigger section and a far post-trigger section. The sampling frequency is changed when going from pre-trigger to post-trigger and/or from near post-trigger to far post-trigger. The dual time base mode is only available in Trigger/ Clock Function Card controlled mode. ProDAQ modules provide compability with all current popular software environments and allow users to safely and simply expand their existing hardware and software systems. The supplied driver automatically detects and initializes all function cards installed into a ProDAQ Motherboard Module, removing any possibility of configuration errors. The ProDAQ 3450 Transient Recorder Function Card is supplied with VXIplug&play drivers for the WIN95 and WINNT frameworks. Download the datasheet for the ProDAQ 3450 Function Card ... |