Boonton 4540 Peak Power Meter User Manual - Manual (Page 92)

Boonton 4540 Series RF Power Meter
Operation 4-44
Main > Trigger > Trig Slope
Description: Set the trigger slope or polarity. When set to +, trigger events will be generated when a
signal’s rising edge crosses the trigger level threshold. When – is selected, trigger events
are generated on the falling edge of the pulse.
Menu Type: Toggle.
Choices: +, -
SCPI Command:
TRIGger:SOURce <character data>
Main > Trigger > Holdoff
Description: Set the trigger holdoff time in microseconds. Trigger holdoff is used to disable the
trigger for a specified amount of time after each trigger event. The holdoff time starts
immediately after each valid trigger edge, and will not permit any new triggers until the
time has expired. When the holdoff time is up, the trigger re-arms, and the next valid
trigger event (edge) will cause a new sweep. This feature is used to help synchronize the
power meter with burst waveforms such as a TDMA or GSM frame. The trigger holdoff
resolution is 0.01 microseconds, and it should be set to a time that is just slightly shorter
than the frame repetition interval.
Menu Type:
Numeric Value.
Range: 0.00 µs to 1000000 µs
SCPI Command: TRIGger:HOLDoff <numeric_value>