Keithley 2002 User Manual

IEEE-488 Reference
3-29
3.10 Common commands
Common commands (summarized in Table 3-2) are device commands that are common to all devices on the bus. These com-
mands are designated and defined by the IEEE-488.2 standard.
Table 3-2
IEEE-488.2 common commands and queries
Mnemonic Name Description
*CLS
*ESE <NRf>
*ESE?
*ESR?
*IDN?
*OPC
*OPC?
*OPT?
*RCL <NRf>
*RST
*SAV <NRf>
*SRE <NRf>
*SRE?
*STB?
*TRG
*TST?
*WAI
Clear status
Event Enable command
Event Enable query
Event status register query
Identification query
Operation complete command
Operation complete query
Option identification query
Recall command
Reset command
Save command
Service request enable command
Service request enable query
Read status byte query
Trigger command
Self-test query
Wait-to-continue command
Clears all event registers, and Error Queue.
Program the Standard Event Enable Register.
Read the Standard Event Enable Register.
Read the Standard Event Status Register and clear it.
Returns the manufacturer, model number, serial number, and firm-
ware revision levels of the unit.
Sets the Operation Complete bit in the Standard Event Status Reg-
ister after all pending commands have been executed.
Places an ASCII “1” into the output queue when all pending
selected device operations have been completed.
Returns an ID code that indicates which memory option is
installed and whether or not the optional scanner card is installed.
Returns the Model 2002 to the setup configuration stored in the
specified memory location.
Returns the Model 2002 to the *RST default conditions.
Saves the current setup to the specified memory location.
Programs the Service Request Enable Register.
Reads the Service Request Enable Register.
Reads the Status Byte Register.
Sends a bus trigger to the 2002.
Performs a checksum test on ROM and returns the result.
Wait until all previous commands are executed.
*CLS — clear status
Clear status registers and error queue.
The *CLS command is used to clear (reset to 0) the bits of the following registers in the Model
2002:
Standard Event Status Register
Operation Event Register
Error Queue
Trigger Event Register
Sequence Event Register
Arm Event Status Register
Measurement Event Register
Questionable Event Register
This command also forces the instrument into the operation complete command idle state and
operation complete query idle state.
PRINT #1, "output 16; *CLS" ' Clear registers and Error Queue
3.
1
0.
1
Description
Program fragment

Keithley 2002 Specifications

General

Resolution	8.5 digits
DC Voltage Accuracy	±0.0006%
Maximum DC Voltage	1000 V
Maximum AC Voltage	750 V
Maximum DC Current	3 A
Maximum AC Current	3 A
Connectivity	GPIB, RS-232
DC Voltage Range	100 mV to 1000 V
AC Voltage Range	100 mV to 750 V
Resistance Range	10 Ω to 1 GΩ
Model	2002
Category	Multimeter
Interface	GPIB, RS-232
AC Current Accuracy	±0.1%
Frequency Range	0.1Hz to 300kHz
Display	VFD
Type	Digital
Power Supply	100-240V 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 Range	100 μA to 3 A
AC Current Range	100 μA to 3 A