Using Alternative Gas Cells; Gas Cell; Notes - JDS Uniphase SWS15100 User Manual

7. Do not perform the calibration. Click the Restore Calibration button. Select Yes to restore the
last calibration values. The calibration data is copied from the .INI file to the control module of
the receiver.
8. Repeat the procedure for each receiver station. When the procedures are complete, all
receivers connected to the same transmitter have identical wavelength calibration.
9. Repeat the procedure on all receivers if the source optics module or the tunable laser source
is changed.
As an alternative to the gas cell built into the SOM other gas cells can be used. The table below
shows recommended alternative gas cells for calibration of C and L Band receivers
Wavelength

Gas Cell

Range
C-Band Carbon 13
13
C H
2 2
L-Band Hydrogen Cyanide
13 14
H C N
C-Band Hydrogen Cyanide
13 14
H C N
In order to set up the system for calibration with alternative gas cells, the SWS15100.ini file must
be modified. The .ini file view below shows how the calibration parameters are grouped as C –
Band and L- Band. The C – Band Calibration Parameters, for example are shown for Carbon 12,
Carbon 13 and HCN, all but the Carbon 12 are "commented" out by the use of (;) at the
110 – Operating and Maintenance Instructions
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Using Alternative Gas Cells

.
Refer to this
Table and Graph
Table 15:
Wavelengths of
Absorption Lines
13C2H2
for
Acetylene Cell
Figure 86. C Band
12C2H2
Trace using
Acetylene Cell
Table 16:
Wavelengths of
Absorption Lines
for H13C14N Cell
Figure 93:
Absorption Lines of
H13C14N Cell
Table 16:
Wavelengths of
Absorption Lines
for H13C14N Cell
Figure 93:
Absorption Lines of
H13C14N Cell

Notes

This is the cell fitted within the
L-Band SOM.
This gas cell is available in an
external configuration. Due to
shipping restrictions, may not
be available in all areas.
This gas cell is available in an
external configuration. Due to
shipping restrictions, may not
be available in all areas.