Chapter 5 Functions And Features; Introduction; Saving And Recalling From The Front Panel - ILX Lightwave LDX-3200 Series User Manual

CHAPTER 5
FUNCTIONS AND FEATURES

INTRODUCTION

This chapter introduces you to the LDX-3200 Series Precision Current Source functions and operating features such
as event triggering, analog modulation of laser injection current, and Save and Recall.

SAVING AND RECALLING FROM THE FRONT PANEL

For applications where you might need to alternate between particular instrument configurations, the LDX-3200
Current Sources offer a unique SAVE and RECALL feature. The SAVE feature allows you to easily store all front
panel settings for any given instrument configuration. These settings, which are stored in one of ten memory bins,
can be retrieved at any time with the RECALL function. This saves setup time, and it reduces the chance of setup
error for tests which are periodically repeated. For example, using the configuration described in Chapter 2 where the
Current Source is operating in Constant Current mode, the instrument parameters saved by using the SAVE function
would be Constant Current Mode, 200 mA range, a limit set point of 175 mA, a laser current set point of 150 mA, and
Display Mode I. Once this set up is saved, the LDX-3200 Current Source may be configured for another unique set
up. You can recall the original set up for the first experiment any time using the RECALL function.
To enter the SAVE/RECALL mode, press the SELECT switch in the PARAMETER section until the SAVE indicator
LED becomes lit and the unit displays the SAVE "bin" on the display. If another bin number is desired, press the SET
switch and rotate the adjust knob until the desired bin number is displayed. Releasing the SET switch completes the
SAVE operation and all of the instrument parameters are saved to the indicated bin number as they appear on the
front panel.
To recall a previously saved instrument set up, press the SELECT switch until the RECALL indicator led becomes lit.
The instrument will display a RECALL "bin" number on the display. If you desire to change the RECALL bin, press
the SET switch and rotate the adjust knob until the desired bin number is displayed. Releasing the SET switch
completes the RECALL operation. The instrument is restarted and the front panel parameters are reconfigured to the
new parameters saved under that bin number.
The factory default values for front panel parameters may be restored by recalling "bin" zero (0). See Table 2.1 for the
default settings.
SAVING AND RECALLING UNDER REMOTE OPERATION
For saving under remote operation, use the command "*SAV x", where x is the desired "bin" number (1-10). For a
recall under remote operation, use the command "*RCL x", where x is the desired "bin" number (0 – 10).
FUNCTIONS AND FEATURES CHPT 5
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