Agilent Technologies 86120C, Руководство пользователя

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4-27
Programming Commands
CALCulate1 Subsystem
When NORMAL measurement mode is selected, the uncorrected fre-
quency domain data consists of 64K values. Only the frequency domain
data corresp onding to 1270–1650 wavelength (in vacuum) is returned
(15,047 values). In
FAST measurement mode, the data consists of 32K
values of which 7,525 values are returned.
In NORMAL measurement mode, the frequency sp acing between values
is uniform and is equal to 3.613378 GHz. Note that the sp acing
between values is not uniform in wavelength units. The values
returned are in ascending optical frequency.
The first value of the uncorrected frequency data corresp onds to an
optical frequency of 181.6915 THz (1650.008 nm). The last value of the
uncorrected frequency data corresp onds to an op tical frequency of
236.0584 THz (1269.993 nm). For examp le, a laser line p eak located
at the 3,000th returned value has an op tical frequency of:
or, 1557.137 nm (in vacuum).
When FAST measurement mode is selected, the frequency spacing
between elements is uniform and is equal to 7.226756 GHz. Note the
spacing between values is not uniform in wavelength units. The values
returned are in ascending optical frequency. Only the frequency
domain data corresponding to 1270–1650 wavelength (in vacuum) is
returned (7,525 values). The first value of the uncorrected frequency
data corresponds to an optical frequency of 181.6879 THz (1650.041
nm). The last value of the uncorrected frequency data corresp onds to
an optical frequency of 236.0620 THz (1269.974 nm). For example, a
laser line p eak located at the 1500th returned value has an op tical fre-
quency of:
or, 1557.195 nm (in vacuum).
If your program is aborted or interrupted after sending this query, the
Agilent 86120C continues to p rocess the data but does not p lace it in
the outp ut buffer. Because of the amount of data p rocessed, the
instrument
will not respond to any new commands in its inp ut buffer
for up to 20 seconds .
frequency 181,6915 THz 2 999 3,613378 GHz
( ) ,
+ =
192,5280 THz =
frequency 181,6879 THz 1 499 7,226756 GHz
( ) ,
+ =
192,5208 THz =