Agilent Technologies 8614 B Series User Manual page 87

Optical spectrum analyzer
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Averaging
When averaging is on, you can select the number of measurement sweeps to be averaged, using
the 10, 20, 50, 100 softkeys. You can also enter averaging values other than those displayed by
using the numeric keypad or the knob.
When the number of sweeps taken is less than the count, the following formula is used to calcu-
late the data:
AVG = sum of current sweeps/ number of averages selected
If the number of sweeps is greater than or equal to the count, the following formula is used to
calculate the data:
New average = [(count-1)/count] x last average + new measurement/count
Key Path
Remote Commands
Backup Internal Memory
Allows you to make a complete backup of user memory onto a floppy disk. All user files (mea-
surement, trace, and specification sets) are saved. You can recall the backup contents into the
instrument with the Restore Internal Memory function.
Internal Memory" on page 2-19
A screen appears asking you to insert a formatted floppy disk into the floppy drive. The disk will
not be viewable on a PC and no trace or measurement files can be saved onto the disk until it is
reformatted. The backup internal memory function overwrites the floppy disk with a new image,
so only the latest backup information can be recovered through the Restore Internal Memory
operation. Any existing files or catalogs on the floppy disk will be destroyed.
Key Path
Traces > Averaging
CALCulate[1|2|3|4|5|6]:AVERage:COUNt
CALCulate[1|2|3|4|5|6]:AVERage:STATe
Save/Recall > Backup/Restore Menu > Backup Internal Memory
Function Reference
Refer to "Backing Up or Restoring the
Averaging
3-13

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