Filter
Top Products
5-24
Programming Commands
Measurement Instructions
<resolution>
Constants
MAXimum 0.01 resolution (fast update)
MINimum 0.001 resolution (normal)
DEFault Current resolution
Examples
:CONF:ARR:POW:WNUM DEF MAX
:FETC:ARR:POW:WNUM? DEF MIN
:READ:ARR:POW:WNUM?
:MEAS:ARR:POW:WNUM?
:CONF:SCAL:POW:WNUM 6451, MAX
:FETC:SCAL:POW:WNUM? 6451, MIN
:READ:SCAL:POW:WNUM? 6451
:MEAS:SCAL:POW:WNUM? 6451
Query Response
If the :MEAS:SCAL:POW:WNUM? 6451 command is sent, and a 1550 nm laser
line is present, the following response would be returned to the computer:
+6.45286262E+005
Notice that the returned units are m
–1
. If six laser lines are measured and
:MEAS:ARR:POW:WNUM? is sent, the following response is returned. Notice
that the first returned number indicates the number of laser-line values
returned in the query.
6,+6.47298400E+005,+6.46627900E+005,+6.45957000E+005,+6.45286300E+005,+6.44615600E+005,+6.
43945300E+005
MEASure[:SCALar]:LENGth:COHerence:ALPHa?
Queries the alpha constant.
Syntax
:LENGth:COHerence:ALPHa?
Attribute
Summary
Query Only
Description
The alpha constant is a unitless ratio.