Adjust Section - ILX Lightwave LDT-5900 Series User Manual

The error indicators (LEDs) in the display section are described as follows:
• TEMP LIMIT - The Temperature Limit LED will be RED when either the Low Temperature or
• VOLTAGE LIMIT - The Voltage Limit LED will be RED when either high or low TEC voltage
• CURRENT LIMIT - The Current Limit LED will be GREEN when either the high or low current
• SENSOR ERROR - The Sensor Error LED will be RED if the temperature sensor (either a
• TEC ERROR - The TEC Error LED will be RED if the TEC is either shorted, open or not
For more information on which errors will cause the output to turn off, see "Output
Off Registers" in Chapter 3.

Adjust Section

The Adjust section of the front panel contains the Adjust Knob and the ENTER /
LOCK Key. (See Figure 2.5) The adjust knob (digital encoder) allows the user to
change the value of a selected menu parameter. The parameter selected is
indicated by brackets [123.456]. The ENTER / LOCK key is used in menus to
enter and store a parameter that has been modified by the knob. When not in a
menu, this key is used to lock (disable) or unlock the adjust knob.
• LOCK - The Lock LED will be GREEN when the adjust knob has been locked and is
01_10
the High Temperature Limit is met or exceeded and the output will be shut off.
limit is reached.
limit is reached and the temperature error signal is decreasing, (e.g. when driving the load to
a given setpoint). The Current Limit LED will be RED when either the high or low current limit
is reached and the temperature error signal is increasing, (e.g. system is in a thermal run-
away condition.)
thermistor, IC or RTD) is open, shorted or outside of the nominal measurement range.
connected.
disabled.
O P E R A T I O N S
Front Pa nel Opera t ion
LDT-5980/ 5948
2
C H A P T E R
15