Vitrek Xitron 2553, Руководство по управлению

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Reading Measurement Results from the 2553/ 2553E 49
Reading Measurement Results from the 2553/ 2553E
This section describes the methods by which the user may obtain measurement results
from the 2553/ 2553E.
General
The 2553/ 2553E uses Transmit Buffer Banks to transfer measurement results to the
controller. Each of these, there are five in the 2553/ 2553E, contains the following
functionality.
•
Each can contain up to 6000 characters of formatted measurement results.
•
Each is individually programmed by the user regarding the measurement results to
be formatted in the bank.
•
Each bank is individually programmed by the user, regarding how often the
formatted measurement results are to be updated.
•
Each bank may be non-destructively read any number of times between updates.
•
The bank selected to be read can cause the assertion of the IEEE488.1 interface SRQ
line at the time the bank is updated with formatted measurement results. This
assertion can be used for controller data read purposes, or for controller timing
duties, or both.
After defining which measurement results are to placed into each bank, and how often
each bank is to be updated, the user has simply to set which bank is to be read prior to
reading the data contained within it. In this manner, the user can rapidly, on an “as
required” basis, switch between several (up to five) different sets of measurement results
without having to send long and complex commands each time.
Each bank is controlled by a pair of commands. One to set the time interval between
updates, the other, to set the content of the bank. A further command is provided to
select which bank will be read by the controller.