Language Reference

ALIGN

Example

Description

Adjusts the ￿ber positioner's tracking table.

100 OUTPUT 723;"ALIGN WHITE;"

The ALIGN command adjusts the ￿ber positioner's tracking table at multiple wavelengths. (The ￿ber positioner aligns the monochromator's output beam with an internal optical-￿ber cable.) The alignment uses either the Option 002 built-in white light source or a user-supplied source.

The command replaces pre-existing tracking data with new data and zeroes the 4AUTO ALIGN5 data. The resulting tracking data may be viewed via

the extended state display: press NNStateNNNNNNNNNNNNNNN, NNMORENNNNNNNNNNNNNN1NNNNNNofNNNNNNNNN3NNNN, NNMORENNNNNNNNNNNNNN2NNNNNNofNNNNNNNNN3NNNN, NshowNNNNNNNNNNNNNNNstatesNNNNNNNNNNNNNNNNNNN, and then NEXTENDNNNNNNNNNNNNNNNNNNNSTATENNNNNNNNNNNNNNN.

If an NAUTONNNNNNNNNNNNNNNALIGNNNNNNNNNNNNNN is executed after this alignment, all of the alignment tracking data will be shifted. In this sense, NAUTONNNNNNNNNNNNNNALIGNNNNNNNNNNNNNNN is done on top of this alignment.

The following command arguments are available:

Argument

De￿nition

WHITE

Speci￿es the Option 002 built-in white light source. The

 

alignment determines tracking corrections at 17 equally

 

spaced wavelengths between 900 nm and 1700 nm.

 

Current tracking data is replaced with new data, and the

 

NNNNNNNNNNNNNNNNAUTO ALIGNNNNNNNNNNNN NNN data is zeroed. The alignment usually requires

 

2 to 3 minutes to execute. Be sure to connect the white light

 

source output to the HP 71450A's OPTICAL INPUT (or HP

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