measComp: EPICS Drivers for Measurement Computing Devices

November 9, 2020

Mark Rivers

University of Chicago


This package provides EPICS drivers for the some of the USB and Ethernet I/O modules from Measurement Computing. Currently the USB-CTR04/08 and USB-4303 counter/timer, and multi-function modules (E-1608, USB-1208LS, USB-1208FS, USB-1608G, USB-1608GX-2A0, USB-231, USB-2408-2A0, E-TC, TC-32, E-DIO24) are supported. The multi-function modules support analog input and/or output, temperature input (USB-2408-2AO, E-TC, and TC-32), digital input/output, pulse counters (all but TC-32), and pulse generators (USB-1608G and USB-1608GX-2A0) These drivers are documented separately.

This module is supported on both Windows and Linux, 64-bit and 32-bit. On Windows it uses the Measurement Computing "Universal Library" (UL), which is only available on Windows. On Linux it uses the [low-level drivers from Warren Jasper]( On top of these drivers the module provides a layer that emulates the Windows UL library from Measurement Computing. The EPICS drivers thus always use the UL API and are identical on Linux and Windows. Currently only the E-1608, USB-CTR04/08, E-TC, E-TC32, and E-DIO24 models are supported on Linux. Support for other modules is straightforward to add and can be done as the demand arises.

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