Lightwave Communications LDX-3232 manual Feature can be defeated via the Lasenableoutoff, Command

C H A P T E R 6

CALIBRATION AND TR OU BLESHOOTING

Troubleshooting Guide

Symptom	Corrective Actions
Unable to adjust output	Check the I LIMIT parameter for the output range in use, see
	that it is set above 0 mA.
Power mode operation has high	Check back panel PD BIAS; if set too low, may act as an open
output current, but little or no	feedback loop; if in doubt, set the PD BIAS to mid range (2.5 V)
power measured
Output exceeds power limit	The “power limit” is not a hardware limit. It only serves as a
	warning that the power measurement has exceeded the limit
	setpoint. Normally this limit will cause the output to shut off. This
	feature can be defeated via the LAS:ENABLE:OUTOFF
	command.
Open circuit error occurs during	Check load connections; check that measuring meter does not
calibration	auto-range (use non-auto-ranging modes).
Calibration is aborted	Calibration modes will be aborted if an open circuit is detected.
unintentionally
VOLTAGE LIMIT indicator blinks	This indicates a voltage limit error; check laser connections. A
	high impedance may cause this condition.
Open circuit error E503 or voltage	The LDX-3232 instruments have an adjustable laser
limit error E505 prevents output	compliance voltage. Check to see if the LASER voltage limit
from reaching desired value	setting is too low (Chapter 2); check laser connections.

100LDX-3232