Keithley 2520, User Manual, Page: 246 / 329

Model 2520 User’s Manual SCPI Command Reference 14-57
Configure sample buffer
POINts <n>
:TRACe:POINts <n> Specify number of samples
Parameters
<n> = 1 to 3000 Specify number of samples
MINimum 1
MAXimum 32000
DEFault 100
Query
:POINts? Query number of samples
:POINts? MINimum Query smallest allowable sample number
:POINts? MAXimum Query largest allowable sample number
:POINts? DEFault Query *RST default sample number
Description
This command sets the number of samples to return for the
TRAC:DATA? query. Every time the pulse width
(SOUR:PULS:WIDTh) is changed, the TRAC:POINts value defaults to
either the (Pulse Width
×
10e6) in DC mode, or (Pulse Width
×
10e6 +
5) in pulse mode, or 3000, whichever is less. For example, if the pulse
width is 10
µ
s, the number of points will default to 100 in DC mode, or
105 in the pulse mode.
Trigger subsystem
The Trigger subsystem is made up of a series of commands and subsystems to configure
the Trigger Model. These commands and subsystems are summarized in
Table 14-10 .
NOTE See Section 8 for more details on triggering and the trigger model.
Initiate source/measure cycle
INITiate
:INITiate[:IMMediate] Take Model 2520 out of idle state
Description
This command is used to initiate source and measure operation by tak-
ing the Model 2520 out of idle. The :READ? and :MEASure? com-
mands also perform an initiation.
Command processing will halt until the trigger model returns to the idle
state, with the following exceptions:
• ABORt
• SDC
• DCL
• IFC
• SYSTem:PRESet, *RST, or *RCL
• *TRG or GET with TRIG:SOUR BUS
If any other command is sent after an INIT, only SDC, IFC, and DCL
will work.