VP-ITC MicroCalorimeter User’s Manual
Init. Setup File:
Specifies the initial setup file, which will be loaded into the experimental control
window, the first time it is opened. Specifying the initial setup file as LastRun1.inj will
result in the last run parameters that were executed to be loaded at startup.
Cells Boot Temperature:
Upon launching VPViewer, the ITC will scan to, and then thermostat
at, the temperature entered into this text box.
Default Shield DT:
The default temperature difference between the ITC adiabatic jacket and the
outer shield of the VP-ITC. The default setting of a 1 degree difference has been found
to be ideal for all ITC applications and should not be changed without consultation with a
MicroCal engineer.
Analog Input Range:
Determines the maximum range of measurable DC voltages for all VP-
ITC data channels. The default range of +/- 1.25 volts is adequate for almost all ITC
applications and provides for the greatest sensitivity. In instances where heats are too
large to be measured using the default setting, the range of DP measurement can be
increased by increasing the Analog Input Range. Please consult a MicroCal engineer
prior to making this change.
Save/Add/Erase User
:
These buttons provide a convenient way of maintaining unique startup
parameters and placing data files in different folders for multiple users. (See section
, starting on page 82, for more information)
Y-Axis Scale
The Y-axis group allows for changing of the current y-axis (DP) units. Available y-axis units are
mCal/min., µCal/sec. and µWatts. By default, y-axis units will be displayed in µCal/sec.
Changing y-axis units will only change the power units for ‘local’ data displayed in real-time,
within VPViewer and Origin. All data files will be saved with the default units of µCal/sec
Diagnostics
This group is used for diagnostics and troubleshooting and
would normally not be utilized unless instructed by a MicroCal
engineer.
Export Current Data:
Users may be instructed by a MicroCal
engineer to click the
Export Current Data button.
This provides service personnel with a
convenient means of capturing ITC data, which otherwise is not saved to disk.
Plot Idle Data:
Users may be instructed by a MicroCal engineer to checkmark the
Plot Idle
Data
, for use in troubleshooting. This provides service personnel with a convenient
means of capturing ITC data, which otherwise is not saved to disk.
Extended Data Mode:
This mode of operation will save all data the VP
instrument produces to the data file. This provides MicroCal
engineers with extra data for troubleshooting.
Show Noise:
When this box is checked the Real-Time Noise group box
will be displayed. From this group you may elect to numerically
display the RMS (Root-Mean-Squared) or PTP (Peak-To-Peak)
noise.
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