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7 Trigger Functions
Trigger
the EXTernal2 parameter will generate a “Hardware missing; Not available for this model number”
message.
Preset
See table below
Status Bits/OPC
dependencies
The Status Operation Register bit 5 "Waiting for Trigger" is set at the same time as the Sweeping or
Measuring bit is set. It is cleared when the trigger actually occurs (that is, after the trigger event
occurs and all the applicable trigger criteria have been met). A corresponding pop-up message
("Waiting for trigger") is generated if no trigger signal appears after approximately 2 sec. This
message goes away when a trigger signal appears.
Backwards
Compatibility SCPI
:TRIGger[:SEQuence]:SOURCe EXTernal
For backward compatibility, the parameter EXTernal is mapped to EXTernal1
Backwards
Compatibility SCPI
[:SENSe]:<measurement>:TRIGger:SOURce
This backwards compatibility alias command is provided for ESA/PSA compatibility
This backwards compatibility command does not apply to the Swept SA measurement, for that just
use :TRIGger:SOURCe
This backwards compatibility command does not apply to the monitor spectrum, log plot and spot
frequency measurements
Backwards
Compatibility SCPI
[:SENSe]:<measurement>:TRIGger:SOURce IF
In earlier instruments, the parameter IF was used by apps for the video trigger, so using the IF
parameter selects VIDeo triggering. Sending IF in the command causes VID to be returned to a
query.
Backwards
Compatibility SCPI
[:SENSe]:ACPR:TRIGger:SOURce
This backwards Compatibility SCPI command is provided to support the same functionality as
[:SENSe]:ACPr:TRIGger:SOURce (PSA W-CDMA, PSA cdma2000 and PSA 1xEVDO) due to the fact
that the ACPr node conflicts with the ACPower node.
Initial S/W Revision
Prior to A.02.00
Modified at S/W Revision
A.03.00
Trigger Source Presets
Here are the Trigger Source Presets for the various measurements:
Meas
Mode
Preset for RF
Preset for IQ
Notes
Swept SA
SA
IMM
IQ not
supported
CHP
SA, WCDMA, C2K,
WIMAX OFDMA,
1xEVDO, DVB-
T/H, DTMB, LTE,
LTETDD, CMMB,
ISDB-T, Digital
Cable TV, MSR
IMM
IQ not
supported
OBW
SA, WCDMA, C2K,
WIMAX OFDMA,
1xEVDO: EXT1
others: IMM
IQ not
supported
For 1xEVDO mode, the trigger source is
coupled with the gate state, as well as the gate
W-CDMA & HSPA Measurement Applications Reference
327
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 ...