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Updated user documentation. MK

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doc/user/counter.htm
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@ -6,13 +6,14 @@
<h1>SICS counter handling</h1>
<hr size=4 width="66%">
<p>
This section deals with the SICS interface to single counters.
Where the SICS counter concept may include several monitors per
counter. A counter is, again, a named object which takes commands.
A word or two has to be lost about the SICS handling of preset values for counters.
Two modes of operation have to be distinguished: counting until a timer has passed,
for example: count for 20 seconds. This mode is called timer mode. In the other
mode, counting is continued until a control monitor has reached a certain
A counter in SICS is a controller which operates single neutron
counting tubes and monitors.
A counter can operate in one out of two modes: counting until a timer has
passed,
for example: count for 20 seconds. Counting in this context means that the noutrons coming in during these 20 seconds are summed together. This mode is called timer mode. In the other
mode, counting is continued until a specified neutron monitor has
reached a certain
preset value. This mode is called Monitor mode. The preset values in Monitor
mode are usually very large. Therefore the counter has an exponent data variable.
Values given as preset are effectively 10 to the power of this exponent. For
@ -20,7 +21,9 @@ instance if the preset is 25 and the exponent is 6, then counting will be
continued until the monitor has reached 25 million. Note, that this scheme with
the exponent is only in operation in Monitor mode.
The commands understood are:<ul>
Again, in SICS the counter is an object which understands a set of
commands:
<ul>
<li> <b> countername SetPreset val </b> sets the counting preset to val.
<li> <b> countername GetPreset </b> prints the current preset value.
<li> <b> countername preset val</b> With a parameter sets the preset, without inquires the preset value. This is a duplicate of getpreset and setpreset which has been provided for consistency with other commands.
@ -53,6 +56,12 @@ paused.
monitor to use as control monitor in monitor mode, it allows to choose
the monitor used for pausing the count when the count rate is below the
threshold (Who on earth designed this?)
<li><b>countername send arg1 arg2 arg3 ...</b> sends everything behind
send to the counter controller and returns the reply of the counter
box. The command set to use after send is the command set documented
for the counter box elsewhere. Through this feature it is possible to
diretclly configure certain variables of the counter controller from
within SICS.
</ul>
</p>
</body>