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National Instruments 778538-01 PXI Digital Waveform Instrument

National Instruments 778538-01 is the part number for the PXI-6551 Digital Waveform Instrument that has 1 MBit of memory per channel. By using a memory architecture that utilizes synchronization and memory core technology, this version of the waveform instrument has an onboard memory size of 4 MBytes for both acquisition and generation. Combining the power of an analyzer and a digital waveform instruments, the 778538-01 is an excellent choice for a variety of applications, including memory chip functional testing. Boasting 20 channels that offer multiple direction control options, the device offers unparalleled communication abilities. 

The programmable function interface of the 778538-01 includes 4 channels that have per-channel direction control. The acquisition channels of the instrument have 2 voltage comparators per channel, and include data, STROBE, and PFI <0..3>. In addition, the acquisition capabilities of the 778538-01 boasts programmable thresholds with a voltage range of -2.0 V to 5.5 V.  With an error FIFO depth of 4,094, the waveform instrument can support up to 255 repeated errors at a maximum speed of 50 MHz. 

The compact design of the 778538-01 results in a single 3U CompactPCI slot that is compatible with the PXI series. It measures 18.6 cm × 13.1 cm (7.32 in × 5.16 in) and weighs 375 g (13.2 oz), with an operating temperature range from 0 °C to 55 °C. The instrument can be safely stored in a temperature range of -20 °C to 70 °C. The recommended calibration interval of the 778538-01 is 2 years, and it has a calibration warm-up time of only 15 minutes.