Keithley 6487 Reference Manual

Model 6487 Reference Manual DISPlay, FORMat, and SYSTem 13-9
SYSTem subsystem
Table 13-3
SCPI commands — system
Command Description Default Ref
:SYSTem
:ZCHeck
[:STATe] <b>
[:STATe?
:ZCORrect
[:STATe] <b>
[:STATe?]
:ACQuire
:PRESet
:LFRequency <freq>
:LFRequency?
:AUTO
[:STATe] <b>
[:STATe]?
:AZERo
[:STATe] <b>
[:STATe]?
:TIME
:RESet
:POSetup <name>
:POSetup?
:VERSion?
:ERRor
[:NEXT]?
:ALL?
:COUNt?
:CODE
[:NEXT]?
:ALL?
Zero check:
Enable or disable zero check.
Query zero check state.
Zero correct:
Enable or disable zero correct.
Query zero correct state.
Acquire a new zero correct value.
1
Return to SYSTem:PRESet defaults.
Select power line frequency: 50 or 60 (Hz).
Query power line frequency
Path to control auto line frequency selection.
Turn automatic line frequency ON or OFF.
Query automatic line frequency state.
Path to control autozero:
Enable or disable autozero.
Query autozero state.
Timestamp:
Reset timestamp to 0 seconds.
Select power-on setup; RST, PRESet, or SAV0-2
Query power-on setup.
Query SCPI revision level.
Read messages in error queue:
Return and clear oldest error (code and message).
Return and clear all errors (code and message).
Return the number of errors.
Error code numbers only:
Return and clear oldest error (code only).
Return and clear all errors (codes only).
ON
OFF
ON
Note
2
Section 3
Section 3
A
Section 1
Section 3
B
C
D
Section 10

Keithley 6487 Specifications

General

Type	Picoammeter/Voltage Source
Current Measurement Range	20 fA to 20 mA
Interfaces	GPIB, RS-232
Voltage Burden	< 200 µV
Input Impedance	>10^14 Ω
Power	100 V / 120 V / 220 V / 240 V
Basic Current Measurement Accuracy	0.4%