DH Instruments FPG8601, Руководство по эксплуатации и обслуживанию

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FPG8601™/VLPC™ OPERATION AND MAINTENANCE MANUAL
© 2007 DH Instruments, a Fluke Company Page 100
6.8.2.6.3 <Command Terminator>
Defines how the instrument terminates command strings. The selections
available from the drop down list are carriage return,
<CR>
, and carriage
line feed,
<CR> + <LF>
. The majority of instruments that support an RS232 or
IEEE-488 interface use carriage line feed as the command terminator.
Refer to the instrument documentation for details.
6.8.2.6.4 Initialization Commands
Initialization commands are used to set a remote device to a known state.
This can include setting a specific unit of measure, range information, gas
selection, clearing error buffers, etc. All commands entered are sent just one
time when a DUT is activated. Responses to initialization commands are not
used in any way by FPG Tools. Therefore, there is no requirement to specify
read information.
Figure 54. <Initialization Commands Editor>
Panel
6.8.2.6.5 Read Commands
Read commands are used to obtain an output from a remote device. When FPG
Tools
is polling a DUT, the read commands are constantly sent in order to
provide real time updating. The faster the instrument responds, the faster the
refresh rate on the
<Run Display>
(see Section 6.3.2). For this reason, it is best
to use the smallest number of commands possible to obtain the desired
instrument response.
Although, up to ten commands can be issued as part of the read process, one
command must be specified as the actual read command. This command, when
formatted using the
<Leading characters to strip>
, should yield an output value
in the measurement unit specified for the instrument. Select this command by
“dragging” the arrow, “
Î
”, next to it. Each DUT or data acquisition device has
it’s own unique set of remote interface commands. Refer to the DUT manual for
details on remote commands.