Lightwave Communications LDX-3232 Manuel d'utilisateur télécharger pdf (Page 91)

COMMAND REFERENCE

LDX-3232 Device-Dependent Command Reference

04_06 LDX-3232 75

CHAPTER 4

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The LASer:SET:LDI? query returns the constant I value that is used for both output

ranges and both bandwidths.

- where the response is the constant I setpoint value, in mA.

Notes In local operation, the constant I setpoint is read by selecting I or I

HBW

mode, then

pressing and holding down the SELECT switch in the DISPLAY area of the front panel.

When the mA indicator is blinking, the display will show the LDI setpoint.

Examples "LAS:SET:LDI?" -response: 50.0, means the laser output current setpoint value is

50.0 mA.

"Laser:set:ldi?" -response: 120.0 means the laser output current setpoint value is

120.0 mA.

The LASer:SET:MDI? query returns the laser monitor photodiode current setpoint value

(when CALPD=0), in µA.

- where the response is the constand I

setpoint value, in µA.

Notes In local operation, the MDI setpoint is read by selecting P mode, then pressing and

holding down the SELECT switch in the DISPLAY area of the front panel. When the µA

indicator is blinking, the display will show the MDI setpoint.

The monitor photodiode current is directly proportional to the laser optical output power.

Therefore, the MDI (I

) setpoint may be used to control optical output of the laser.

Examples "las:set:mdi?" -response: 30.0, means the laser monitor photodiode current is setpoint is

30 µA, for use in constant P mode with CALPD = 0.

LASer:SET:LDI?

FRONT PANEL

REMOTE

LASer:SET:MDI?

FRONT PANEL

REMOTE

LAS

SET

LDI

LAS

SET

IPD

MDI

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Lightwave Communications LDX-3232 Manuel d'utilisateur Page 91