40 DECADE user manual, edition 9
3.
In this example the integrator is connected to the REC output at the rear
panel of the DECADE.
4.
Prepare the LC-EC system for analysis.
Programming the AUTO mode:
5.
From the DECADE ‘Main’ screen, choose DC, and in the ‘Range select’
choose NEXT. In the ‘DC SET’ screen, set the temperature at the
desired value (or choose ‘off’) and choose AUTO. You are now in the
‘AUTO SET’ screen in the AUTO mode.
6.
In the ‘AUTO SET’ screen select the time file that you want to edit with
‘File’. When it is your first file, select nr. 1. There are 5 time files available
in the DC mode (and 4 in the Pulse mode). The number of times you
want to repeat this time file is set with ‘Cycles’. Because the DECADE
will give the integrator and switching valve the starting signals, it is set at
‘Master’. The duration of one run is set with ‘CycleTime’. A step
programmed at a time similar to or larger than the cycle time (i.e. t
≥
3:05), will not be executed!
Before the drift monitor can be set (if required), the first line in the time
file has to be programmed. The drift monitor is linked to the range setting
of the first line in the time file (at t = 0:00).
7.
Press ‘PRGR’ to go into the edit mode of the time file. The ‘PRGR’
screen appears:
When all settings are correct, this line in the time file can be saved by
choosing ‘ADD’. When the time already exists, the question ‘Do you want to
overwrite time?’ appears. As each new time file contains a t = 0:00, this
question will always appear after editing this line.
In our example, after editing t=0:00 an additional screen will appear, asking
you in which range you want to operate at the 50 nA/V setting. You may
choose between the nA and the µA range. See ‘Chpt. CHAPTER 4
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