Automatic Shutoff Conditions For Current Output; Additional Functions And Features; Adjusting Current Setpoint In Terms Of Optical Power - ILX Lightwave LDX-36000 Series User Manual

Automatic Shutoff Conditions for Current Output

The following conditions will automatically cause the instrument to disable the
current source output:
• The opening of any interlock
• Laser Open Circuit
• Laser Voltage Limit
• Laser Current Limit
• Changing instrument operating modes
• High impedance error
• High load inductance
• Failed power supply

Additional Functions and Features

This section describes special functions and features of the LDX-36000 Series
High Power Current Source.

Adjusting Current Setpoint in Terms of Optical Power

Pressing the P/P
drive current to be set in terms of optical power. In this mode, the setpoint is
entered in terms of optical power and the instrument back-calculates the required
drive current from the laser's threshold and slope efficiency values.
The instrument is still operating in constant current mode; the setpoint is simply
being shown in a different form. When the power setpoint is adjusted, the "A"
annunciator flashes to indicate that the laser current setpoint is being changed.
Refer to Figure 3.12 to see graphically how current setpoint is determined.
03_10
button until the annunciator W is illuminated allows the laser
PD
Note: This mode is NOT a constant power mode.
O P E R A T I O N
Front Panel Operation
LDX-36000 Series
3
C H A P T E R
41
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