package require CFD812
::CFD812::Map base name crate=0
::CFD812::Unmap name
::CFD812::SetThreshold name channel value
::CFD812::SetWidth name bank value
::CFD812::SetDeadtime name bank value
::CFD812::SetMask name mval
::CFD812::SetMultiplicityThreshold name value
::CFD812::GetSerialNumber name
::CFD812::GetBase name
This Tcl package provides support for the CAEN V812 VME 16 channel constant fraction discriminator to Tcl scripts. The package is built on top of and depends on the Vme package. Usually you will use this package in conjunction with the CFDState package in order to retain information about the state of the device as the CAEN V812 is a write only device.
The CFD812::Map command allows you to establish a connection between a physical module and a unique name. The unique name is then used to identify the module when invoking all other commands in the pack- age. If you are done with a module, you can invoke ::CFD812::Unmap to remove the association between the name and the module.
The package commands become available as soon as your script issues the package require CFD812 command. In the description below we will be using several parameter names that have a common meaning from command to command:
Parameter: name
Usage: Name of a map to the device associated with a module in the CFD812::Map
Parameter: channel
Usage: Number of a channel within the module (0-15).
Parameter: bank
Usage: Number of a bank of channels. The module is divided into two banks. Bank 0 which has channels 0-7 and bank 1 which has channels 8-15.
Parameter: value
Usage: In settings commands this is the value set
Creates a connection between a module at the specified
base address
and VME crate number (defaults to zero).
The name parameter is associated with
that connection and should be used to refer to the module in future
calls to the library.
Breaks the connection with the module name
and releases all resources associated with that connection.
Once this command is executed, you should not use
name in subsequent calls to the package.
Sets the threshold for a
channel of the CFD specified by
name to
value. The value must be in the
range of
-1 through -255.
The channel must be in the range
0 through 15.
Sets the width of a
bank of channels o the module
name to
value. See the documentation of the
CAENV812 for information about how the width correlates to
physical units (the correlation is
nonlinear). The bank parameter selects the set of 8 channels
whose width is set. The CAEN V812
width controls 8 channel banks. Bank 0 controls channels
0 through 7, while bank 1 controls
channels 8 through 15.
Sets the deadtime
of a bank
of channels for the module named name to
value. Banks of channels
for deadtime are defined in the same way as for widths
see ::CFD812::SetWidth above). The value
is related to physical units in some not well documented
non-linear way, for more information
about that see the CAEN V812 manual.
Sets the enable mask of the module
name to
mval.
mval is a 16 bit mask of bits, one per channel.
The least significant bit represents the enable for channel 0,
the next channel 1 and so on until
the most significant bit of the mask, which represents channel
15. If a bit is set, the corresponding channel is enabled,
otherwise, disabled.
Sets the majority logic threshold of
name to value
Returns the serial number of the module
name.
Returns the base address of the module
name