Front Panel Operation
Manual 31470, Rev. E, April 2001
2-19
4.
Press [
Trig Level
] to configure the trigger level in either the Internal or External Trigger mode.
a. Internal Trigger:
Peak power will be sampled at a point defined by a Trigger Level, a Delay, and a Delay Off-
set. The delay-offset feature is a convenience in some applications (for example, when
measuring pulse width from a point other than the trigger level, or when comparing the
levels of various pulses within a pulse train).
1.)
Press [
Int/Ext Trig
] to select Internal Triggering.
2.)
Set the Trigger Level value with the cursor keys.
3.)
Press [
Delay
] and use the cursor keys to adjust the Trigger Delay (0 to 100 ms). Units
will change automatically.
4.)
Press [
Delay Offset
] and use the cursor keys to adjust the Trigger Delay Offset (0 to
100 ms). Units will change automatically.
5.)
Press [
OK
] to store the changes, or [
Cancel
] to exit without saving changes.
b. External Trigger:
The External Trigger mode is configured the same as the Internal Trigger mode described
above, except that the Trigger Level is specified in volts rather than dBm.
1.)
Press [
Int/Ext
] Trig to toggle to the External Trigger mode and set the Trigger Level
value in volts with the cursor keys.
2.)
Press [
OK
] to store the changes, or [
Cancel
] to exit without saving changes.
Modulation Sensors:
Modulation sensors can be used in CW, Modulated Average Power (MAP), Peak Average Power
(PAP) and Burst Average Power (BAP) modes.
1.
From the Sensor Setup menu select the Modulation sensor with the cursor keys.
2.
Press [
Config
] to select and configure a modulation sensor. The options for this configuration
are CW, MAP, PAP, and BAP.
a.
Press [CW] to select the CW mode. There is no configuration for modulation sensors
operating in the CW mode and the screen will return to the Setup Menu to configure
other sensors.
b.
Press [MAP] to select the MAP mode. There is no configuration required and the screen
will return to the Setup Menu to configure other sensors.
c.
Press PAP to select the PAP mode. You will be prompted to enter a duty cycle for pulse
average inputs. Use the cursor keys to adjust the Duty Cycle. The range is 0.001% to
99.999%.
d.
Press [BAP] to select the BAP mode. The options are Auto Config and User Config.
1.)
Press [
Auto Config
] for the meter to automatically configure itself and return to the
Setup Menu.
Summary of Contents for 8650A Series
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Page 240: ...Series 8650A Universal Power Meters Index 6 Manual 31470 Rev E April 2001 ...
