Wavelength; Save And Recall - ILX Lightwave FPM-8200 User Manual

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C H A P T E R

Wavelength

Because the detector responds differently depending on wavelength, it is
important to set the correct wavelength.
To set the wavelength:
1
2
For more information concerning wavelength, see Photodetector Responsivity on
page 19.

Save and Recall

Use SAVE and RECALL to store and reuse FPM-8200 setup parameters for future
use. These parameters include the gain range, wavelength, display mode, filter
mode, and user calibration offset value. Stored setups save time and reduce the
chance of setup error for tests that are repeated periodically.
Setup parameters are stored in non-volatile memory, so they are always available
when you turn-on the instrument. You can save your own setup parameters in any
of ten memory locations numbered from 1-10. When you RECALL that number,
the FPM-8200 reconfigures to the stored setup parameters.
In addition, the FPM-8200 automatically stores two other configurations. When
you turn off the FPM-8200, the electrical current settings are stored and
automatically recalled the next time you turn-on the FPM-8200. This happens
whether or not you save the setup. Additionally, there is a consistent default
configuration, stored as "0" (zero). Setup 0 sets the following configuration:
Function
Display mode
Wavelength
Filter mode
Range mode
User cal value
If you recall setup zero by the front panel, GPIB mode is set to LOCAL. If you use
GPIB to recall setup 0 (*RCL 0), GPIB mode is set to REMOTE.
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 FPM-8200
FR O N T PA N E L O P E R A T I O N
The FPM-8200 Front Panel
Press  to enable the wavelength settin, illuminating the SET indicator below the
wavelength display.
While the SET indicator is on, press UP or DOWN to change the wavelength setting.
Note: Note that the reference value is stored in volatile memory. Therefore, the reference
is returned to 0.000 dBm upon any recall operation or a power down/up sequence.
Setting
Linear (nW, μW, mW)
1550 nm
Medium (average 10 measurements) FILTER MED
AUTO
1.000 (indicator off)
GPIB Equivalent
MODE: W
WAVE 1550
RANGE:AUTO
CAL:USER 1