NSCL DAQ Software Documentation
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vhqconfig

Name

vhqconfig --  Config file for

Synopsis

Example 1. Sample configuration file


# vhq configuration file saved Tue Nov 15  13:28:47 EST 2005
       set  name  ppac_hv
       set  crate 0
       set base 0xdd00
       set maxv 2000
       set maxi 100
       set ILimit(a) 50
       set RampSpeed(a) 100
       set SetPoint(a) 1000
       set ILimit(b) 50
       set RampSpeed(b) 250
       set SetPoint(b) 1000

DESCRIPTION

The vhqControl(1) application uses configuration files both to form a connection to vhq 2xx modules it is controlling and to load previously saved settings. These configuration files are Tcl scripts that set agreed upon variables to the needed configuration values. Configuration scripts have two sorts of variables Identification and Settings variables. Identification variables identify the module both to humans and to computers, providing the necessary information to connect to and control the module. Settings variables provide saved settings information that can be restored into a module once a connection to it has been established.

Identification Variables

name

Provides a human readable name for the module.

crate

Provides the number of the VME crate in which the module is stuffed. If not provided, this defaults to zero.

base

Provides the base address (A16) at which the module has been configured. See the VHQ manuals for more information on setting the module base address. It is important not to configure two modules at the same base address in the same VME crate. This variable is mandatory.

maxv

Defines the maximum voltage the module can output in volts. This variable is mandatory.

maxi

Defines the maxiumum current the module can output in micro-Amps. This variable is mandatory.

Settings Variables

Ilimit(channel)

Sets the current limit for channel. The channel index can be either a or b. Recall that array indices in Tcl are strings. The units of measure are micro-Amps

RampSpeed(channel)

Sets the ramp speed for channel. The channel index can be either a or b. The units of measure are Volts/Sec.

SetPoint(channel)

Sets the target voltage for the channel. The channel index can be either a or b. Note that setting this variable does not cause the module to perform a ramp. The units of measure are Volts.

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