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System Operation
4.4.9.2
Set TEC Params Menu
The Set TEC Params Menu is used to change parameters related to TEC
operation. These parameters, as shown in the menu structure above, are:
safety limits, mode of operation, feedback sensor type, PID control loop gains,
and feedback sensor constants.
To modify TEC parameters, press the SETUP/ENTER key when the
instrument is displaying the Measurement Screen. Press the UP and DOWN
arrow keys to select this menu item. Press the SETUP/ENTER key again to
enter a sub-menu for this item. A sample sub-menu for setting the TEC
Params is shown in figure below.
Set Limits Menu
The Set Limits menu item is used to change the limit settings—current limit,
voltage limit, temperature limits (in Constant Temperature mode) and
resistance limits (in Constant Resistance mode).
To set the desired limits, use the UP and DOWN arrow keys to select this
menu item. Press the SETUP/ENTER key to enter a sub-menu for this item.
A sample sub-menu for setting the limits is shown in figure below. Use the
UP and DOWN arrow keys to select a desired sub-menu item. By default, this
item will be in idle state and the present limit value will be displayed. Press
the SETUP/ENTER key to change this item's state from idle to active. Once
the item is in active state, the leading indicator begins flashing. Use the cursor
arrow keys to select the desired digit and to increment/decrement the value.
Once the desired value has been entered, press SETUP/ENTER key to accept
the new limit value. The new limit value will take effect immediately, and the
menu item will be returned to idle state. Press Esc key to cancel any changes
or to return to Set Limits main menu.
Set Limits
Mode
= Const Temp
Sensor= 10k
Set PID Gains
Figure 22
A Sample Set TEC Params Sub-menu
Lim Ite=
Lim Vte=
Lim Tlo=
Lim Thi=
Ω
Therm
5.000 A
10.000 V
15.00°C
35.00°C
55
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