ILX Lightwave LDC-3926339 User Manual page 72

LASER:MODE
Parameters
Notes
Examples
LASER:MODE
Parameters
Notes
Examples
LASER:MODE
Parameters
Notes
Examples
LASER:MODulation
Parameters
Notes
Examples
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:
ILBW
The LASER:MODE:ILBW command selects low-bandwidth constant current mode for the laser
current source.
None.
Constant ILBW mode (low bandwidth) enables the output low bandpass filter.
Laser:mode:ilbw-action: enables the low bandwidth constant current mode for the laser current
source.
:
MDI
The LASER:MODE:MDI command selects constant monitor diode current ("MDI") mode for the
laser current source.
None.
On the front panel, constant monitor diode current mode is referred to as IPD mode.
In this mode, the control set point is entered with the LAS:MDI command.
Laser:Mode:MDI-action: sets the laser operating mode to constant monitor diode current mode.
:
MDP
The LASER:MODE:MDP command selects constant optical power mode ("MDP") for the laser
current source.
None.
On the front panel, photodetector power mode is referred to as P mode.
This mode of operation uses the monitor photodiode feedback to maintain constant laser optical
power. The actual set point will be a monitor photodiode current value calculated with the CALPD
conversion factor. Therefore, in this mode the set point is only as accurate as the user's CALPD
value.
LASER:MODE:MDP-action: sets the laser operating mode to constant optical power mode.
The LASER:MODulation command turns the laser modulation switch on or off.
An <nrf value>; 1 = on (enabled), 0 = off (disabled).
When the modulation switch is enabled for a channel, the laser current may be modulated by con-
necting a modulation signal onto the back panel "MODULATION" connector (BNC).
The modulation bandwidth depends on the operating mode and the module used. Refer to Chapter
1, Specifications, for more information on bandwidth specifications.
LASER:LDI 20; LASER:MOD ON-action: sets the laser output current to 20 mA and then turns the
laser modulation switch on.
Laser:Mod 0-action: disables modulation of the laser current source.
C O M M A N D R E F E R E N C E
GPIB Command Reference
4
C H A P T E R
55
LDC-3926339