Controlling A Valve; From The Keyboard; From The Run Or Clock Time Tables; Simple Valve: Column Selection - Agilent Technologies 7890 Series Advanced Operation Manual

Controlling a Valve

From the keyboard

From the run or clock time tables

Simple valve: column selection

From inlet or
sampling valve
Back column
Advanced Operation Manual
Valves (except multiposition valves) have two positions
controlled by the [On] and [Off] keys. The keyboard
commands for two- position valves are:
[Valve #] <scroll to the valve> [On]
stop
and
[Valve #] <scroll to the valve> [Off]
other stop
The Valve On and Valve Off commands can be run time or clock
time programmed. See
and "Clock Time Programming"
If a valve is rotated by a run time program, it is not
automatically returned to its initial position at the end of
the run. You must program this reset operation yourself.
This is the plumbing for a single valve, configured as a
switching valve, that selects one of two columns for analysis.
It has no configuration parameters.
Front column
To detector
ON
The column is selected by pressing:
[Valve #] <scroll to valve #> [On] (for the front column) or
[Off] (for the back column).
Rotates valve to one
Rotates valve to the
"Run Time Programming"
on page 15.
OFF
6
Valves
on page 12
221