Agilent Technologies 35670A Manual page 642

TRIGger
TRIGger:STARt[1|2|3|4]
Specifies a pre-trigger or a post-trigger delay for the specified channel.
Command Syntax:
<number> ::= a real number (NRf data)
<unit> ::= [S]
<step> ::= UP|DOWN
<bound> ::= MAX|MIN
Example Statements:
Query Syntax:
Return Format:
Attribute Summary:
Description:
This command is valid in FFT, octave, correlation, and histogram instrument modes only. It is not valid
in order analysis or swept sine instrument mode.
In FFT, correlation, and histogram instrument modes:
This command specifies the amount of time between two points: the point at which the analyzer is
triggered and the point at which the specified channel starts collecting data.
Pre-trigger values are entered as a negative (–) quantity. The channel starts collecting data before
the trigger point.
Post-trigger values are entered as a positive (+) quantity. The channel starts collecting data after the
trigger point.
Pre-trigger and post-trigger values are specified in seconds, with resolution equal to 1 sample.
24-10
TRIGger:STARt[1|2|3|4] {<number>[<unit>]}|<step>|<bound>
limits: -9.9e37:9.9e37
OUTPUT 711;"TRIG:STAR2 -0.1"
OUTPUT 711;"trigger:start 1.5"
TRIGger:STARt[1|2|3|4]?
Real
Option: not applicable
Synchronization Required:
Preset State: +0
SCPI Compliance:
maximum pre trigger value −
sample time =
FFT
sample time
correlation
maximum post trigger delay −
no
instrument-specific
= 8192 × sample time
1
frequencyspan × 256 .
= record length 1024
31
= 2 × sample time
command/query