GFS2102™ OPERATION AND MAINTENANCE MANUAL
© 2007 DH Instruments, a Fluke Company
Page 124
FRAME LABEL
DESCRIPTION
Manipulate
Response
(text entry/drop
down list. Read
Command Sets
only)
Applies only to commands with
<Process Response>
checked. Text entered is used to
allow
GFS Tools
to properly interpret the output when the response does not start with the
output value. This field can include any combination of delimiters and numerical space
values.
For example, a device might return the string, “Pressure:4.343 psi”. The actual output
value for this example appears at position 10. Therefore, 9 leading characters need to be
stripped prior to processing the string. Alternatively, if the colon following “Pressure” will
always appear prior to the pressure value, “:” could be entered as the leading character to
strip. In some cases both a delimiter and a number of characters to strip may be required.
For example, if a remote device returns “Range 1, 4.34 volts, NR 4.431 psi”, the number of
characters in the volts output can change making it impossible to use a fixed length value
for the number of spaces to remove to access the pressure value. To avoid this problem
enter the text
<,,4>
. This tells
GFS Tools
to move to the second comma, then increment
four spaces to read the pressure output value.
Only non-numeric text can be used as a delimiter in the leading characters to
strip field. All numerical entries are assumed to represent the corresponding
numerical value.
.
Apply Set
(drop down list
selection Set
Command Sets
only)
Determines how a set command with the
<Process Set>
option checked will be combined
with the current target output to yield the final set command. There are 2 choices:
Automatic
GFS Tools
takes no special action on the command. The exact value
specified in the
<Command>
field is sent to the remote device regardless of the set point.
Use this choice with controlling devices that have a pre-programmed sequence of targets
that correspond to Test Definition targets. No regulation option is valide when this
selection.
The
<Command>
should move to the next step in the pre-programmed sequence of
steps.
Replace[x]
GFS Tools
replaces the text [x] with the numeric target output in the
<Final
Set Unit>
of the device.
Options on the [Global Settings] tab apply to the entire command set and not
just the selected command.
Table 49.
Remote Command Editor, [Global Settings] Tab Options
FRAME LABEL
DESCRIPTION
Use Multiplexer
(dropdown list)
Determines the association of a remote command set to the state of a multiplexer.
This feature is commonly used for DMMs that will be multiplexed to read several DUTs at
the same time. The choices are:
Always
During test initialization, the device must specify a multiplexer to use and
corresponding multiplexer channel
Sometimes
An option to use a multiplexer is provided during test initialization.
The selection is not necessary.
Never
There is no choice to use a multiplexer during test initialization.
If a multiplexer is used,
GFS Tools
sends the remote commands to activate the desired
channel on the multiplexer, then issues the appropriate read command on all devices that
use that channel. This process is repeated for all channels specified for use during test
initialization.
Poll Frequency
(ms)
(numeric entry)
Specifies the delay interval between sending consecutive command sets. Typically this
value is 0. This allows
GFS Tools
to send commands in a loop to the remote device as
fast as possible. In some cases this is not desired. Particularly, when an interface is
shared. Shared interfaces use the same remote resources. If a faster refresh rate on one
output is more desirable relative to another one, increase the delay interval to slow down
the less desirable command.