External Interlocks; Forward Voltage Measurement; Figure 3.4 External Interlocks - ILX Lightwave LDX-36000 Series User Manual

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C H A P T E R

External Interlocks

In order to enable the laser current output, all interlocks on the instrument must be
satisfied. There are two separate interlocks accessible from a terminal block on
the rear panel (Figure 3.3). The terminals from both sets must be shorted to
enable the output.
The interlocks are labeled "Interlock 1" and "Interlock 2" to allow complete
flexibility in how they are used. If either circuit is opened, the laser current output
is disabled and the appropriate interlock LED on the front panel is illuminated. If
an attempt is made to enable the output with an interlock open, error E-501 will be
generated in the error queue and displayed on the front panel.
The interlock terminals must remain isolated from all other connections including earth
ground.

Forward Voltage Measurement

The LDX-36000 will measure and display forward voltage when the output current
is enabled. Voltage measurement is only possible when the voltage sense lines
from the rear panel measurement connector are attached directly to the laser
diode. If these lines are not used, measurements will always read zero. Voltage
measurement through the output cable is not possible. These lines are available
on the back panel connector labeled Sense. Refer to Figure 3.2 the pinout.
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 LDX-36000 Series
O P E R A T I O N
Connections for General Operation
Note: A cable separate from the output cable is required for voltage measurements.
External Interlocks

Figure 3.4 External Interlocks