LBXXXA Series USB Powe
™
Product Manual PMA (Power Meter Application)
Revision: 08/02/11
- 28 -
Duty Cycle Correction:
The toolbar button is toggle on/off and determines the pulse on/off time at a specified rate and
duration when in average power or CW mode only. The button is inactive when in pulse power mode as the duty cycle
is determined automatically. The duty cycle setup is accessible from the
Offsets & Response
menu and allows entry
of pulse duty cycle from 1 to 100%.
Trigger In:
(Standard and Optional) TTL compatible. Provision is made for various trigger sources from the drop
down. The trigger menu and toolbar button will not appear for the LB478A/479A or LB5XXA if option 003 is not
installed. See data sheet for parameters.
Trigger Out:
(Standard and Optional) TTL compatible. The trigger menu and toolbar button will not appear for the
LB478A/479A or LB5XXA if option 003 is not installed. See data sheet for parameters.
Recorder Output:
(Optional) Shared with trigger input. Data output to Excel and other formats. Recorder is a 0 to 1
VDC output that is proportional to the measured power.
Limit Checking:
Provision is made for setting measurement limit specifications with pass or fail (High/Low)
annunciators shown on the display. The
Limits
setup is accessible from the
Display
menu.
Rel:
The REL annunciator will show in the display when activated
and the power units will change to “dB relative”.
This tool works in conjuction with the
Set Ref
button on the front panel to set the reference value so that a subsequent
power level can be measured relative to this reference level.
(See Making a Relative Power Measurement).
