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48
System Operation
TEC Mode
Constant Current
Constant
Resistance/Reference
Contant Temperature
Users can modify the setpoints for TEC only from this screen. A diamond
symbol (
parameter; selected parameters are those that can be modified through either
the Control Knob or Cursor Arrow Keys.
Some messages are displayed on this screen to draw users' attention to various
events that may require them to take corrective action(s). For instance, a
flashing "E" symbol is shown on the left-top corner of the display whenever
the instrument generates an error message.
4.4.8.4
LIV Params Measurement Screen
A sample LIV Params measurement screen is shown in Figure 16.
In this screen, the most important parameters related to LIV are shown. While
the main purpose of this screen is to view the state of various LIV related
parameters, this screen can be used to adjust LDD setpoint. The contents of
this screen can vary depending upon the mode of operation. See table below
for details.
Parameter 1
Output Current
Setpoint (Is)
Resistance/Reference
Setpoint (Rs)
Temperature Setpoint
(Ts)
) to the left of the setpoint variable indicates the "selected"
LIV:
Ild =
Im
Vf
Va
Figure 19
A Sample LIV Params Measurement Screen
Parameter 3
Actual Temperature (T)
Actual Output Current
(Ite)
Actual Output Current
(Ite)
0.00mA
=
0.0uA
=
0.000 V
=
0.000 V
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