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Presently running the Mark I pulsar timer but to be
replaced in the future by the Mark II pulsar timer.
The Mark I is interfaced via HPIB to the main computer.
The NCCS must be able to control the Mark I Pulsar Timer
i.e. it must be able to :
- SAMPLE - select number of samples and period,
- SETUP TIME - set the pulsar timer clock,
- PRINT TIME - output the time on every second,
- OUTPUT DATA - output the accumulated data,
- SETUP
- select the post-detection time constant,
- GRAPH DATA - output accumulated data sample to oscilloscope,
- LED TEST - turn on the front-panel LEDs for three seconds,
- RAM TEST - test memory chips used for data storage,
- D/A TEST - output a ramp signal to both analogue outputs,
- INPUT VIEW - sample input and write to analogue meter,
- BUS TEST - output A...Z on the HPIB.
The Mark II pulsar timer is presently under design and it has been
decided to interface the pulsar timer to a PC running Linux.
The PC will communicate with the NCCS via the network
using TCP/IP.
The exact communication protocol still has to be decided upon.
-
- interfacing the Mark II pulsar timer is considered desirable but not
mandatory for the first version of the NCCS.
Next: Frequency Synthesiser (HP8662)
Up: Hardware
Previous: Correlation Spectrometer
Mike Gaylard
1999-06-11