Amethod <Name - Keithley 2002 User Manual

Parameters
Query
Description
Program fragment
3.21.7
Parameters
Query
Description
:STATe <b>
:SYSTem:AZERo:STATe <b>
<b> = 1 or ON Enable autozero
0 or OFF Disable autozero
:STATe? Query state of autozero
This command is used to disable or enable autozero.
Important Note: Before you can enable or disable auto-zero, the Model 2002 must first be in the
idle state. The Model 2002 can be placed in the idle state by first disabling continuous initiation
(:INITiate:CONTinuous OFF), and then sending the :ABORt command. After sending the
:STATe command, readings can be re-started by sending :INITiate:CONTinuous ON or
:INITiate.
PRINT #1, "output 16; :init:cont off; :abor"
PRINT #1, "output 16; :syst:azer:stat off; stat?"
PRINT #1, "enter 16"
LINE INPUT #2, a$
PRINT a$
PRINT #1, "output 16; :init:cont on"
NOTE: When finished, be sure to re-enable autozero.
:AMEThod <name>
:SYSTem:AMEThod <name>
<name> = NORMal
BURSt
ASTReam
SSTReam
:AMEThod? Query acquisition method
BURST and NORMal
These parameters are used to specify the acquisition method for storing readings in the buffer.
With the NORMAL method, readings are stored at a rate that is determined by how the instru-
ment is configured (i.e. integration period, resolution and filter).
When BURSt acquisition is selected, the Model 2002 is automatically configured for optimum
speed (The instrument's previous configuration is restored when normal acquisition is again
selected). The burst mode configures the buffer for compact grouping (see :TRACe:EGRoup).
Thus, the time-stamp is not available for burst acquisition. See paragraph 2.8 for complete infor-
mation on burst mode.
Before selecting the burst acquisition mode, configure the Model 2002 for the desired measure-
ments (such as a valid function, a manual measurement range, and a math calculation
(:CALCulate1) if desired). Also, configure the buffer for the number of readings to be stored
(see Trace subsystem).
After burst acquisition is selected, the instrument goes into the idle state (ARM indicator off).
After taking the instrument out of idle (:INITiate or :INITiate:CONTinuous ON), the pro-
grammed scan event (:see :ARM:LAYer2 SOURce) will start the storage process.
Control autozero
Specify acquisition method
Normal acquisition method for buffer
Burst acquisition method for buffer
ASCII stream mode
Single integer stream mode
IEEE-488 Reference
' Place 2002 in idle
' Disable autozero
' Get response from 2002
' Read response
' Display response
' Take 2002 out of idle
3-139