GUI Reference
R&S
®
CMW-KM750/-KM751
45
User Manual 1173.9670.02 ─ 05
Trigger Threshold
Defines the input signal power where the trigger condition is satisfied and a trigger event
is generated. The trigger threshold is valid for power trigger sources. It is a dB value,
relative to the reference level minus the external attenuation (<Ref. Level>
–
<External
Attenuation (Input)>
–
<Frequency Dependent External Attenuation>). If the reference
level is set to the actual maximum output power of the DUT, and the external attenuation
settings are in accordance with the test setup, then the trigger threshold is referenced to
the actual maximum RF input power at the R&S
CMW.
A low threshold may be required to ensure that the R&S
CMW can always detect the
input signal. A higher threshold can prevent unintended trigger events.
Remote command:
Trigger Slot / Chip Delay
Defines a time delaying the start of the measurement relative to the trigger event. This
setting has no influence on "Free Run" measurements.
Remote command:
Trigger Timeout
Sets a time after which an initiated measurement must have received a trigger event. If
no trigger event is received, a trigger timeout is indicated in manual operation mode. In
remote control mode the measurement is automatically stopped. The parameter can be
disabled so that no timeout occurs.
This setting has no influence on "Free Run" measurements.
Remote command:
Trigger IF Min Gap
Defines a minimum duration of the power-down periods (gaps) between two triggered
power pulses. This setting is valid for an "(IF) Power" trigger source.
The trigger system is controlled by means of a timer which is reset to zero in the following
instances:
●
At the IF power-down ramp of each triggered or untriggered pulse, even though the
previous counter may not have elapsed yet. A power-down ramp is detected when
the signal power falls below the trigger threshold.
●
At the beginning of each measurement: The minimum gap defines the minimum time
between the start of the measurement and the first trigger event.
The trigger system is re-armed as soon as the timer has reached the specified minimum
gap.
Parameters and Settings
