Lightwave Communications LDX-3232 - Manual (Page 35)

O P E R A T I O N
Error Indicators
04_06 LDX-3232 19
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
Power Limit Output off; POWER LIMIT light flashes at 1 Hz