Prepared by Dong (Hudson) An, Mixed-Signal Collaboratory Engineer, CMC Microsystems.
The Digital Signal Source and Capture (DSSC) instrument is a test instrument embedded in the Teradyne FLEX tester at the Advanced Mixed-Signal Systems Laboratory (AMSSL). The DSSC's main functionality is to source and capture digital signals in the format of a digital code word. The DSSC is a virtual instrument which is implemented by grouping a number of channels on the High-Speed Digital 200 MHz (HSD200) test instrument in the FLEX tester. As a result, it inherits most of the functionalities of the HSD200 instrument. Its use is an integral part of any digital or mixed-signal test performed on the FLEX tester, and is usually preferred to the HSD200 instrument when the I/O data string has a large dimension.
The DSSC functionality is explained in this document with reference to an example test program developed for a loopback test. The example test program is available to users as a template upon which they can base the development of their own custom test plans that require use of the DSSC instrument.
This user guide provides an introduction to the DSSC instrument, including its test capability, performance specifications, and programming flow. It also compares the DSSC and HSD200 instruments, and suggests a rule of thumb on which instrument is preferred under what circumstance.
The items available for download include:
- user guide, and
- sample test program.
All CMC account holders with a Prototyping or Designer Subscription are authorized to access this product. For more information contact Linda Dougherty at firstname.lastname@example.org or 613-530-4787.