ILX Lightwave LDC-3916338, User Manual

Page: 72 / 107

COMMAND REFERENCE CHPT 4
PAGE 27
n
Front Panel
LASer:MDI?
n
Remote
The LASer:MDI? query returns the value of the selected channel's laser photodetector current measurement,
in
µ
A.
SYNTAX DIAGRAM
:
LAS
:
MDI
?
PARAMETERS None. The response is an <nrf value>.
POINTS OF
INTEREST The response is in
µ
A. The response is valid, even when the unit is not in MDI mode.
This measurement is updated approximately once every 600 msec.
EXAMPLES "Las:MDi?" -response: 100.0, means 100
µ
A of photodetector current (from the selected
channel) was measured.
n
Front Panel
LASer:MDP
n
Remote
The LASer:MDP command sets the value of the optical power set point, in mW.
SYNTAX DIAGRAM
<white
space>
<nrf
value>
:
:
LAS MDP
PARAMETERS An <nrf value> which represents the selected channel's photodiode feedback power, in mW.
POINTS OF
INTEREST If the selected channel's mode is not MDP, the LAS:MDP value will not be used.
If CALPD is 0, the measured MDP will be invalid, and the actual MDP set point would be (near)
0.
On the front panel, the monitor diode photodetector power is referred to as P.
EXAMPLES "Las:Mdp 40" -action: The selected channel's Laser output is controlled so that the
photodiode feedback power remains constant at 40 mW.
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