14-16 SCPI Reference Tables
Model 6220/6221 Reference Manual
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Section 14 topics
Table 14-9
Trace command summary
Command
Description
Default
Sec
SCPI
TRACe
Commands to control buffer:
Note 1
√
:CLEar
Clear readings from buffer.
:FREE?
Query memory bytes available in buffer.
:POINts <n>
Specify buffer size (number of readings to store):
1 to 65536.
Note 2
√
:ACTual?
Query number readings stored in the buffer.
:POINts?
Query buffer size.
√
:NOTify <NRf>
Specify number of stored readings that will set the
Trace Notify bit (B6) of the measurement event
register. Must be less than the TRACe:POINts
value: 1 to (TRAC:POIN -1).
Note 3
:NOTify?
Query trace notify value.
:FEED <name>
Select source (feed) for buffer readings: SENS1,
CALC1, or NONE,
CALC1
√
:CONTrol <name>
Set buffer control: NEXT or NEVer
NEV
√
:CONTrol?
Query buffer control.
√
:FEED?
Query buffer feed.
√
:TSTamp
Timestamp for buffer readings:
:FORMat <name>
Select timestamp format: ABSolute or DELTa
ABS
:FORMat?
Query timestamp format.
:DATA?
Request all readings in buffer.
√
:TYPE?
Query type of readings stored in buffer: Returns
NONE, DELT, DCON, or PULS.
:SELected? <start>,
<count>
Request list of stored readings: Requires a
starting value and the number of readings (count).
Notes:
1. SYSTem:PRESet and *RST have no effect on the TRACe commands. The listed defaults are power-on defaults.
2. Buffer size is set to the number of delta readings to be performed.
3. The default parameter is one-half the set buffer size (TRACe:POINts / 2).
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