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Keithley 2002 User Manual

Keithley 2002
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IEEE-488 Reference
3-139
:STATe <b>
:SYSTem:AZERo:STATe <b> Control autozero
<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" ' Place 2002 in idle
PRINT #1, "output 16; :syst:azer:stat off; stat?" ' Disable autozero
PRINT #1, "enter 16" ' Get response from 2002
LINE INPUT #2, a$ ' Read response
PRINT a$ ' Display response
PRINT #1, "output 16; :init:cont on" ' Take 2002 out of idle
NOTE: When finished, be sure to re-enable autozero.
:AMEThod <name>
:SYSTem:AMEThod <name> Specify acquisition method
<name> = NORMal Normal acquisition method for buffer
BURSt Burst acquisition method for buffer
ASTReam ASCII stream mode
SSTReam Single integer stream mode
: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.
Parameters
Query
Description
Program fragment
3.21.
7
Parameters
Query
Description

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Keithley 2002 Specifications

General IconGeneral
Resolution8.5 digits
DC Voltage Accuracy±0.0006%
Maximum DC Voltage1000 V
Maximum AC Voltage750 V
Maximum DC Current3 A
Maximum AC Current3 A
ConnectivityGPIB, RS-232
DC Voltage Range100 mV to 1000 V
AC Voltage Range100 mV to 750 V
Resistance Range10 Ω to 1 GΩ
Model2002
CategoryMultimeter
InterfaceGPIB, RS-232
AC Current Accuracy±0.1%
Frequency Range0.1Hz to 300kHz
DisplayVFD
TypeDigital
Power Supply100-240V AC, 50/60Hz
Current Range (DC)100 μA to 3 A
Current Accuracy (DC)±0.01%
Current Range (AC)100 μA to 3 A
Current Accuracy (AC)±0.1%
DC Current Range100 μA to 3 A
AC Current Range100 μA to 3 A

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