Oritron Dionex Ion Chromatography System ICS-2100 - Manual (Page 255)

C • TTL and Relay Control
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To select TTL input functions and the control type from the touch screen,
go to the
INPUT/OUTPUT touch screen page (see Figure C-4 ).
TTL Input Control Types
The ICS-2100 TTL inputs respond to four types of
signals to accommodate different controlling devices.
The default control type,
Normal Edge , is compatible
with the output signals provided by Dionex modules.
If the device connected to the ICS-2100 does not send a normal edge
signal, select the appropriate control type. Refer to the documentation
provided with the controlling device and the information below to select
the correct type.
•
Normal Edge: In normal edge
operation, the negative (falling)
edge of a signal turns on the
function. For example, for the
Load/Inject function, the
negative edge switches the
injection valve position to Load.
Figure C-4. Input/Output Page: Selecting TTL Functions
Select a
Function
Select a
Control
Type