SYNTAX DIAGRAM
PARAMETERS
None.
POINTS OF
INTEREST
The decremental default amount is one step. The step size
can
be
edited via the LAS:STEP
command. LDC-3712 default values are 0.001/0.002
mA
(50/100
mA
range), 0.01 mW, or
1
uA
(if
CALMD
=
0), depending on the mode of operation. LDC-3722B default
values
are
0.01
mA,
0.01
mW,
or 1
uA.
LDC-3742B default values
are
0.1
mA,
0.1 mW, or I
uA.
If
the
first
optional parameter is
used,
but not the second, the LASER set point
is
incremented
by a multiple of the LAS:STEP
size,
without changing
the
LAS:STEP
size.
The second
optional parameter is the time,
in
mSec., between steps.
If
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:INC
O",
the command
will
do nothing.
The minimum time to complete one increment is about 10 to 20 mSec. Therefore, values for
the second optional parameter (time between increments) have a practical minimum
of
20.
EXAMPLES
"LAS:MODE:I; LAS:STEP 3; LAS:INCU -action: The laser source current set point is
incremented
by
0.3
mA
(ZDC-3742B), or 0.03
mA
(LDC-3722B), or 0.003
mA
(LDC-3712
on 50
mA
range), or 0.006
mA
(LDC-3712 on 100
mA
range).
"LAS:MODE:I; LAS:STEP 3; LAS:INC 3" -action: The laser source current set point is
incremented by
three
times the amount described in the first example.
"LAS:MODE:I; LAS:STEP 3; LAS:INC 3,5000" -action: The laser source current set point
is incremented
by
the amount described in the
first
example,
three
times, with
5
seconds
between
decremental steps.
"LAS:STEP
1;
LAS:Mode:P;
Las:INCU
-action: The power set point is incremented by
0.1
mW
(LDC-3742B) or 0.01
mW
(LDC-3722B or LDC-3712).
Front Panel
The
LASer:LDI command sets the laser control current.
4-39
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