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WCDMA Multi Evaluation Measurement
R&S
®
CMW-KG4xx/-KM4xx/-KS4xx
600
User Manual 1173.9657.02 ─ 11
External trigger signal fed in via TRIG A or TRIG B on the rear panel of the instru-
ment.
Remote command:
Trigger Slope
Qualifies whether the trigger event is generated at the rising or at the falling edge of
the trigger pulse. This setting has no influence on "Free Run" measurements and for
evaluation of trigger pulses provided by other firmware applications.
Remote command:
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 Delay
Defines a time delaying the start of the measurement relative to the trigger event. This
is useful if the trigger event and the uplink DPCH slot border are not synchronous. A
measurement starts always at an uplink DPCH slot border. Triggering a measurement
at another time may yield a synchronization error.
For internal trigger sources aligned to the downlink DPCH an additional delay of 1024
chips is automatically applied. It corresponds to the assumed delay between downlink
and uplink slot.
This setting has no influence on "Free Run" measurements.
Remote command:
Trigger Time Out
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:
GUI Reference
深圳德标仪器
135-1095-0799