Control Mode; Error Indicators; Analog Output - ILX Lightwave LDT-5525 User Manual

2.4.7 Control Mode

The MODE switch is used to select the control mode. Repeatedly pressing the MODE switch cycles through the
current (I TE), sensor reference (R), or temperature (T) control modes. The LED indicators show the selected mode.
Changing the control mode forces the output off.

2.4.8 Error Indicators

The ERROR indicators become lit when the corresponding conditions occur. The SENSOR OPEN light comes on
whenever the sensor connections are open. The TE OPEN indicator becomes lit whenever an open circuit (or a high
impedance condition) occurs on the TE module output when the output is on. When a TE OPEN condition occurs,
the output will be shut off and the indicator will remain on until the problem is resolved and the output is turned on
again.
The T LIMIT light will blink at 1 Hz whenever the temperature limit is reached. The I LIMIT light will blink at 1 Hz
whenever the I TE current limit is reached.

2.4.9 Analog Output

An analog output signal is available at the ANALOG OUTPUT connector (BNC) on the front panel. This signal is a
voltage between 0 - 5.0 volts which is proportional to the measurement signal. For example, an analog output signal
of 2.5 volts (±0.5 volts) would represent a measurement of 50% of full scale.
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