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7 Trigger Functions
Trigger
Absolute Trigger Level
Sets the absolute trigger level for the RF burst envelope.
When using the External Mixing path, the Absolute Trigger Level is uncalibrated because the factory
default was set to accommodate the expected IF levels for the RF path.
Key Path
Trigger, RF Burst
Scope
Meas Global
Remote Command
:TRIGger[:SEQuence]:RFBurst:LEVel:ABSolute <ampl>
:TRIGger[:SEQuence]:RFBurst:LEVel:ABSolute?
Example
TRIG:RFB:LEV:ABS 10 dBm
sets the trigger level of the RF burst envelope signal to the absolute level of 10 dBm
Notes
Sending this command does not switch the setting from relative to absolute; to switch it you need to
send the :TRIGger[:SEQuence]:RFBurst:LEVel:TYPE command, below.
Amplitude Corrections are not taken into account by the Absolute Trigger Level. For example, if you
have given yourself effective gain with an amplitude correction factor, the Absolute Trigger will not
fire until you have set the trigger level that far below the displayed signal level, rather than simply to
the displayed signal level. This is only true for Amplitude Corrections, not External Gain or Ref Level
Offset functions.
If mode is Bluetooth, the default value is –50 dBm.
Couplings
This same level is used for the RF Burst trigger source in the Trigger menu, for the RF Burst selection
in the Periodic Timer sync source (in the Trigger menu and in the Gate Source menu), and also for the
RF Burst selection in the Gate Source menu
Preset
–20 dBm
State Saved
Saved in instrument state
Min
–200 dBm
Max
100 dBm
Default Unit
depends on the current selected Y-Axis unit
Backwards
Compatibility SCPI
:TRIGger[:SEQuence]:FRAMe:RFBurst:LEVel:ABSolute
Initial S/W Revision
Prior to A.02.00
Modified at S/W Revision
A.04.00
Key Path
Trigger, RF Burst
Remote Command
:TRIGger[:SEQuence]:RFBurst:LEVel:TYPE ABSolute|RELative
:TRIGger[:SEQuence]:RFBurst:LEVel:TYPE?
Example
TRIG:RFB:LEV:TYPE REL
sets the trigger level type of the RF burst trigger to Relative.
Preset
ABSolute
State Saved
Saved in instrument state
Initial S/W Revision
Prior to A.02.00
Modified at S/W Revision
A.04.00
344
W-CDMA & HSPA Measurement Applications Reference
Summary of Contents for E6640A
Page 80: ...Table of Contents lxxx W CDMA HSPA Measurement Applications Reference ...
Page 188: ...3 Programming the Test Set Common Commands 188 W CDMA HSPA Measurement Applications Reference ...
Page 256: ...5 Mode Functions Mode Setup 256 W CDMA HSPA Measurement Applications Reference ...
Page 324: ...6 System Functions System 324 W CDMA HSPA Measurement Applications Reference ...
Page 369: ...8 Channel Power Measurement Auto Couple W CDMA HSPA Measurement Applications Reference 369 ...
Page 389: ...8 Channel Power Measurement Marker W CDMA HSPA Measurement Applications Reference 389 ...
Page 664: ...9 ACP Measurement Auto Couple 664 W CDMA HSPA Measurement Applications Reference ...
Page 669: ...9 ACP Measurement BW W CDMA HSPA Measurement Applications Reference 669 ...
Page 984: ...9 ACP Measurement View Display 984 W CDMA HSPA Measurement Applications Reference ...
Page 1001: ...10 Spectrum Emission Mask Measurement W CDMA HSPA Measurement Applications Reference 1001 ...
Page 1668: ...12 Code Domain Measurement Auto Couple 1668 W CDMA HSPA Measurement Applications Reference ...
Page 2354: ...14 QPSK EVM Measurement 2354 W CDMA HSPA Measurement Applications Reference ...
Page 2364: ...14 QPSK EVM Measurement Auto Couple 2364 W CDMA HSPA Measurement Applications Reference ...