Thermo Scientific Dionex Easion Operator's Manual page 104

Dionex Easion Operator's Manual
•
Normal Edge: In normal edge
operation, the negative (falling) edge of
a signal turns on the function. For
example, for the
the negative edge switches the injection
valve position to Load. For the
function, the negative edge turns on the pump. For the
On/Off
function, the negative edge performs an autozero command.
The action of the positive (rising) edge depends on the function. For example,
for the
Load/Inject
the Inject position. For the
the pump. For the
•
Inverted Edge: The inverted edge mode
works identically to the normal edge
mode except that the positive and
negative edges are reversed in function.
•
Normal Pulse: In normal pulse
operation, the negative edge of the TTL
signal is the active edge and the positive
edge is ignored.
A pulse width of 50 ms or more is
guaranteed to be detected. A pulse
width of 4 ms or less is guaranteed to be ignored. The action for pulse widths
that are greater than 4 ms and less than 50 ms is undefined.
•
Inverted Pulse: The inverted pulse
mode operates identically to the normal
pulse mode except that the positive and
negative edges are reversed in function.
96
Load/Inject function,
Pump
function, the positive edge switches the injection valve to
Pump On/Off
function, the positive edge has no effect.
Autozero
Action Off or No Effect
+5 V
TTL
NORMAL
EDGE
+0 V
Action On
function, the positive edge turns off
Action On
+5 V
TTL
INVERTED
EDGE
+0 V
Action Off or No Effect
+5 V
TTL
NORMAL
PULSE
+0 V
Action On
Action On
+5 V
TTL
INVERTED
PULSE
+0 V
Doc. 155028-01 08/20
Autozero
Action Off
Action Off