ILX Lightwave LDC-3916338 User Manual page 76

n Front Panel
n Remote
The LASer:MODE:MDP command selects constant optical power mode for the present channel.
SYNTAX DIAGRAM
PARAMETERS None.
POINTS OF
INTEREST On the front panel, photodetector power mode is referred to as P mode.
This mode of laser operation uses the monitor photodiode feedback current to maintain
constant optical power. The actual set point will be a monitor current value calculated via the
CALPD conversion factor. Therefore, in this mode the set point is only as accurate as the
user's CALPD value.
EXAMPLES "LAS:MODE:MDP" -action: sets the selected channel's laser output mode of operation to
constant optical power mode.
n Front Panel
n Remote
The LASer:MODulation command turns the selected channel's laser modulation switch on or off.
SYNTAX DIAGRAM
:
PARAMETERS An <nrf value>; 1 = on, 0 = off.
POINTS OF
INTEREST When the modulation switch is enabled for a channel, the laser current may be modulated by
connecting a modulation signal onto the 3916's or 3908's back panel "MODULATION"
connector.
The modulation bandwidth depends on the LAS operating mode and module used. Refer to
Chapter 1, Laser Specifications, for more information on bandwidth specifications.
EXAMPLES "LAS:LDI 20; LAS:MODULA ON" -action: sets the selected channel's laser output current to
20 mA and then turns the selected channel's modulation switch on.
"Las:Mod 0" -action: turns the selected channel's modulation switch off.
COMMAND REFERENCE
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:
LAS
:
LAS
PAGE 31
LASer:MODE:MDP
:
MODE
MDP
LASer:MODulation
<white
MOD
space>
value>
<nrf
CHPT 4