Parameters - ILX Lightwave LDT-5525 User Manual

The DISPLAY switch is used to select the measured current (I TE), temperature, resistance, or the set point value.
The set point type is determined by the MODE selection. Repeatedly pressing the DISPLAY switch will cycle the
display from ITE to temperature to resistance (with thermistor sensors only) to set point and back to ITE, and so on.
When in I TE mode, the set point will be TE current.
When in R mode, the set point will be thermistor resistance in KΩ. R mode is not available if the back panel SENSOR
SELECT switch is set to LM335 or AD590. R mode operation may offer improved set point resolution (over T mode),
depending on the desired temperature set point. See Section 2.6.3 for R mode operation.
NOTE: The resistance set point is NOT maintained if the control mode is changed (e. g. from R mode to T mode).
Also, if the SENSOR SELECT switch is moved from 10 µA to 100 µA while in R mode, the resistance set point will be
rounded to match the display resolution.
When in T mode the set point will be temperature in °C. See Section 2.6.2 for T mode operation.
When the output is off and a measurement is displayed, if the adjust knob is turned the control mode set point will be
displayed for three seconds. If the set point is adjusted (by turning the adjust knob) the set point timer will be
restarted. Therefore, three seconds after the set point is adjusted the display will return to the last measurement.

2.4.3 Parameters

The LDT-5525 Temperature Controller allows adjustment of the following parameters, I LIMIT (TE current limit), T
LIMIT (temperature limit) and GAIN (sensor feedback amplifier gain). In addition, the sensor calibration values may
be entered (see section 2.4.5, CAL).
The LDT-5525 will limit the I TE output to the I LIMIT value, regardless of the set point or control mode.
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