How to Achieve <1um Accuracy When Measuring Roller Gap Roller Gap Measurement with MTI Digital Accumeasure Capacitive Probes Many roll-to-roll finishing processes typically use a calender, or series of hard pressure rollers, to deliver smooth, high-quality products of plastic, textile, or paper (Fig 1). Ensuring a consistent material thickness, however, depends on the ability to monitor, and maintain, a precise gap between rollers. This application note describes a quick and easy means for roller gap measurement. Problem How to measure the small gap between rollers to keep track of product thickness. Typically, it’s not possible to [...]

By Gerald Allgaier, Systems Specialist and Bob Fitzgerald, Application Specialist - Vitrek For many measurements that require the capture and processing of analog data, data throughput speed and conversion resolution are the two most important considerations. Typical examples include Radar, Signals Intelligence (SIGINT), Ultrasound Imaging, Non- Destructive Testing (NDT), Mass Spectroscopy / Time-of-Flight (TOF), and Production Test. These test applications usually demand high speed data transfer rates. So typically, Digitizers (A/D) or Arbitrary Waveform Generators (D/A) residing on a high-speed backplane are required. These applications many times require 2, 4 or more conversion channels, [...]

   Introduction Figure 1. GaGe High-Speed Digitizers including PC Oscilloscope Software, powerful SDKs for custom application development and turnkey integrated PC-based measurement systems.   While the nominal vertical resolution of a high-speed waveform digitizer (specified in bits) is often promoted, its true performance is provided by its measured Dynamic Parameters and in particular by its Effective Number of Bits (ENOB). This article describes  measurement of the Dynamic Parameters and presents measurements for a leading-edge GaGe 12-bit Digitizer. A widely used digitizer-like device, the Digital Storage Oscilloscope (DSO), is optimized for the visualization of unknown signals. The relatively [...]

   Introduction Operational performance and safety are paramount concerns when determining the acceptability of a range of interconnection products in military and aerospace applications. Connectors and relays, wires, wire bundled into cables and harnesses, all must be tested against stringent standards. The number and range of these standards is mind-numbing — and this paper makes no attempt to catalog them all. Rather, notable and salient MIL standards and similar aerospace standards will be used to site the key role that high-performance electrical safety testers, ancillary equipment and software play in effecting reliable and cost-effective compliance testing of components as [...]