Lightwave Communications LDX-3232 - Manual (Page 63)

C O M M A N D R E F E R E N C E
LDX-3232 Device-Dependent Command Reference
04_06 LDX-3232 47
C H A P T E R
4
Circuit condition is fleeting and may be missed via the LAS:COND? query. Therefore, the
user should test for the Open Circuit Event via the LAS:EVEnt? query.
The LASER condition status is constantly changing, while the event status is only
cleared when the event status is read or the *CLS command is issued.
Examples "LAS:COND?" -response: 513, means that the LASER limit current and out of tolerance
LASER conditions currently exist.
"Radix Hex; Laser:Cond?" -response: #H108, means that the LASER Output shorted
and Power limit conditions currently exist.
The LASer:DEC command decrements the selected laser control mode setpoint by one
or more steps. Optional parameters allow multiple steps to be decremented and the time
(in milliseconds) between decrements to be set, respectively. This is an overlapped
command. Other commands may be executed while this function is in progress.
Syntax Diagram
Parameters 0, 1, or 2. The first optional parameter is the number of steps, and the second optional
parameter is the number of milliseconds between steps.
Notes The decremental default amount is one step. The step size can be edited via the
LAS:STEP command. LDX-3232 default values are 0.1 mA, 0.1 mW, or 1 µA
(if CALMD = 0).
If the first optional parameter is used, but not the second, the user may decrement the
LASER setpoint by a multiple of the LAS:STEP size, without changing the LAS:STEP
size.
If the both optional parameters are used, the user may create an automated stepping
ramp function for the LASER output.
If the first optional parameter is entered as zero, "LAS:DEC 0", the command will do
nothing.
The minimum time to complete one decrement is about 20 ms. Therefore, values for the
second optional parameter (time between decrements) have a practical minimum of 20.
Examples "LAS:MODE:I; LAS:STEP 3; LAS:DEC" -action: The laser source current setpoint is
decremented by 0.3 mA.
"LAS:MODE:I; LAS:STEP 3; LAS:DEC 3" -action: The laser source current setpoint is
decremented by three times the amount described in the first example.
"LAS:MODE:I; LAS:STEP 3; LAS:DEC 3,5000" -action: The laser source current
setpoint is decremented by the amount described in the first example, three times, with
five seconds between decremental steps.
LASer:DEC F RONT P ANEL
R EMOTE
: LAS :
DEC
<nrf
value>
<nrf
value>
<white
space>
,