R Mode; Ite Mode - Newport 6000 Operation And Maintenance Manual

32 Chapter 3
When an LM335 sensor is used, a two-point conversion equation is used to determine
the temperature. Its voltage is measured as well as the I
When an AD590 sensor is used, another two-point conversion equation is used to
determine the temperature. Its reference current is sensed across a resister, and this
voltage is measured. The I
3.3.9.2

R Mode

In constant R mode, the TEC is driven to the set point resistance, voltage, or current.
This resistance, voltage, or current is measured and converted to a temperature. The
I
TE
3.3.9.3 I
TE
In constant I
value. The I
current.
current is also measured.
Mode
mode, the TEC is driven with a constant current, at the I
TE
current is sensed across a resistor and the voltage is converted to I
TE
Principles of Operation
current is also measured.
TE
current.
TE
set point
TE
TE