8250A Optical Power Meter Operation Manual
3.4 Backing Up and Initializing Parameters
3-6
3.4
Backing Up and Initializing Parameters
3.4.1
Backing Up Parameters
Because the parameters of this instrument are backed up (saved) in the built-in flash memory when the power
turns off, the parameters are retained even if the power is off.
The parameters can be saved in or loaded from 4 independent memory areas (USER-0 to USER-3).
The parameters can be saved or loaded by key operation or through remote commands.
When the power turns on, parameters that are saved either when the power turns off or in USER-0, can be
loaded.
Parameters that are loaded when the power turns on, can be selected by key operation in the menu item.
For more information on key operation, refer to 3.1, “Menu Map.”
For more information on remote commands, refer to 4, “REMOTE CONTROL.”
The initial values of the parameters and backup items are shown in Table 3-1.
The outline of the parameter backup is shown in Figure 3-4.
Table 3-1 Initial Values of the Parameters and Backup (1 of 2)
Parameter
Value when shipping
(Initial value)
Backup
Saving or
loading
parameters
User parameter dBm/W
dBm
Range
R4 (Minimum range)
Range AUTO/MANUAL
AUTO
Trigger AUTO/HOLD
AUTO
Sampling rate
FAST
Number of display digits
5 1/2
Wavelength
Depends on the sensor.
Preset wavelength
780
CF calculation
OFF
CF
1.00
Smoothing calculation
OFF
Smoothing count
10
MAX calculation
OFF
Calibration wavelength point
1
