ISSN:
1089-7623
Source:
AIP Digital Archive
Topics:
Physics
,
Electrical Engineering, Measurement and Control Technology
Notes:
An enhanced state-machine pulse programmer has been developed for use in microcomputer-controlled instrumentation; the device uses TTL logic, and is capable of operation with a 100-MHz clock. A hybrid counter is utilized which restricts the high-frequency clock to a small portion of the whole device, thereby limiting overall demands on circuit performance. For the device, timing resolution is determined by the speed of the delay counter circuitry utilized, while minimum event duration is limited by access times of the static RAM used for program storage. The device reported here, which utilizes a 32-bit delay counter, and which has 32 kwords of 150-ns program memory, is capable of generating events with a duration between 150 ns and 42.9 s at a constant resolution of 10 ns; the maximum duration can be extended indefinitely if looping is utilized. The hardware cost of the device, which has 16 output lines, is under $400.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1063/1.1139949
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