Dionex Reagent-Free Controller
32
Doc. 031880-04 1/12
2. Verify that the
RFC ENABLED
and the
EGC
LEDs are on.
3. Turn on (activate) the
Gradient
TTL. This signals the Dionex RFC to
start the gradient. See “Controlling the Gradient TTL” on page 32 for
how to turn on and off the TTL.
4. Keep the
Gradient
TTL on for the time defined for the gradient, plus
any additional time that you want to continue running at the final
concentration.
The
GRADIENT ON
LED is on while the gradient is running. During
this time, the EGC concentration values cannot be edited.
5. To end the gradient, turn off the
Gradient
TTL. The eluent
concentration returns to the starting value.
Controlling the Gradient TTL
For DX-320, DX-500, and DX-600 systems, the
Gradient
TTL can be
controlled from the front panel of the controlling module or from a
software command, if the module is controlled with software.
For DX-120 systems, the
Gradient
TTL can only be controlled with
software.
Below are examples for controlling the TTL using PeakNet
®
5.2
software, PeakNet 6 software, and the front panel of the pump.
PeakNet 5.2 Gradient Method Example
This example shows how to set up a Method in PeakNet 5.2 for
controlling the Dionex RFC
Gradient
TTL. This example is for a DX-120
system. Method setup is similar for DX-320, DX-500, and DX-600
systems.
1. Open the Method to which you will be adding the gradient TTL
commands, or create a new Method.
2. Click
to open the DX-120 Timed Events Editor.