Language Reference

ALIGN

 

71451A's MONOCHROMATOR INPUT) before issuing the

 

ALIGN command.

AUTOPT

Speci￿es that an external broad-band light source is used.

 

You must set the stop and start wavelengths prior to

 

the alignment. These wavelengths are included in the

 

alignment. The alignment takes about 2 or 3 minutes to

 

complete. To run this alignment, you must observe the

 

following points:

 

￿

Connect your own broadband light source to the

 

 

front-panel input connector.

 

￿

Set the start and stop wavelengths within the input range

 

 

of 600 nm to 1700 nm.

 

￿

Ensure that the span of the alignment is greater than 10

 

 

nm.

 

￿ The signal amplitude must be greater than 078 dBm in a

 

 

10 nm resolution bandwidth at all X's to be aligned.

 

If the above conditions are not met, a \Bad Wavelength

 

Range" error message is displayed. The alignment occurs

 

at equally spaced points between the start and stop

 

wavelengths. No points are separated by more than 50 nm.

MANUAL

Runs an 4

 

5 at a wavelength apeci￿ed by the

AUTO ALIGN

 

marker and transfers the results to the ￿ber positioner's

 

tracking table. (A maximum of 32 alignments can be

performed.) Before initiating the alignment, connect your

own light source to the front-panel input connector. After the alignment, the NAUTONNNNNNNNNNNNNNALIGNNNNNNNNNNNNNNN data is zeroed. The data

being added to the tracking table is tested to see if it results in a tracking curve which is too steep. If the curve is too

steep, an error is reported, and the data is not added to the table (neither is the NNNNNNNNNNNNNNNNNNNNNNNNNNNAUTO ALIGNNNN data zeroed). If

the current NAUTONNNNNNNNNNNNNNNALIGNNNNNNNNNNNNNN motor position is close enough

to a motor position already listed in the correction table, the NAUTONNNNNNNNNNNNNNALIGNNNNNN data will replace that entry instead

of generating a new one. This \replacement" limit is wavelength and order dependent, but amounts to about 10 nm at 1300 nm in ￿rst order.

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