Lightwave Communications manual LDX-3232 Error Indicators

O P E R A T I O N

Error Indicators

C H A P T E R 2

Now the instrument is configured to operate in Constant Power Mode. In the MODE section, enable the output of the laser current source by depressing the OUTPUT push button once. The accompanying LED labeled ON will illuminate indicating that the laser output is on and current is being driven to the laser. The LDX-3232 current source will drive the laser to the Constant Power setpoint and maintain closed loop control with the photodiode current measurement.

Error Indicators

The LDX-3232 High Compliance Current Sources indicate general operational error conditions. Each error condition results in an action as shown in the table below.

Table 2.2 LDX-3232 Error Indicators

Error Condition	Action
Interlock	Output off; INTERLOCK light flashes at 1 Hz
Open Circuit	Output off; OPEN CIRCUIT light flashes at 1 Hz; if this condition was caused by
	an excessively high compliance voltage, the VOLTAGE LIMIT light will also be
	turned on.
Current Limit	CURRENT LIMIT light flashes at 1 Hz
Voltage Limit	VOLTAGE LIMIT light flashes at 1 Hz; this indicator warns that the output is within
	0.25 V of LIM V setting; if the voltage limit (LIM V) is reached, the LASER output
	will shut off.
Optical Output	Output off; POWER LIMIT light flashes at 1 Hz
Power Limit

04_06 LDX-3232 19