Series 8650A Universal Power Meters
2-18
Manual 31470, Rev. E, April 2001
Avg
Use this option to set the averaging period of power measurements, including modulated, CW and peak
sensors. Press [
Avg
] from the Sensor Setup menu to display the
Sensor Setup - Averaging
menu
. This menu offers three options:
Auto, Averages,
and
Time
.
Auto
:
1.
Select this setup option if you want the time to be ‘adaptive’ averaged. That is, the time
window changes dynamically to reduce the effects of transient changes in power levels.
2.
Press [
OK
] to store the changes, or [
Cancel
] to exit without saving changes.
Averages:
1.
Select this setup option to set the number of periods for averaging measurement signals over a
fixed period of time. Each unit is approximately 20 ms in duration. You have a choice of
‘powers of two’ multiples of units from 1 to 512. Set the number of periods with the up/down
cursor keys.
2.
Press [
OK
] to store the changes, or [
Cancel
] to exit without saving changes.
Time:
1.
Select this option to average measurement signals over a fixed period. A menu will display for
you to set the time in seconds between 20 ms and 10 seconds. The meter will automatically
change the selection to the nearest of 20 ms times powers of 2 multiples of 1 to 512 (e.g.,
entering 1.000 seconds will be changed to 1.280 seconds). Set the time digits with the cursor
keys.
2.
Press [
OK
] to store the changes, or [
Cancel
] to exit without saving changes.
Offset
Select this option to enter an offset value in dB when an attenuator or amplifier is installed before the
sensor input. From the Sensor Setup menu.
1.
Press [
Offset
] and enter the value of the offset with the cursor keys.
2.
Press [
OK
] to store the changes, or [
Cancel
] to exit without saving changes.
Config
This option is available with Peak and Modulation sensors only.
Peak Sensors:
1.
From the Sensor Setup menu select the Peak sensor with the cursor keys.
2.
Press [
Config
] to display the Setup Mode menu. This menu offers two options:
CW
and
Peak
.
3.
Press [
CW
] to select the CW mode for the peak sensor. There is no configuration for peak
sensors operating in the CW mode and the screen will return to the Setup Menu to configure
other sensors.
Summary of Contents for 8650A Series
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Page 228: ...Series 8650A Universal Power Meters B 12 Manual 31470 Rev E April 2001 ...
Page 240: ...Series 8650A Universal Power Meters Index 6 Manual 31470 Rev E April 2001 ...
