Keithley 6485 User Manual

7 Remote Operation and Commands
Selecting and configuring an interface ....................................................... 7-2
Interfaces ............................................................................................. 7-2
Connections ......................................................................................... 7-2
Front panel GPIB operation ................................................................. 7-4
Remote commands .................................................................................... 7-4
General bus commands ...................................................................... 7-4
Common commands ........................................................................... 7-5
Signal oriented commands. ................................................................. 7-5
SCPI command subsystems ............................................................... 7-6
Programming syntax ............................................................................ 7-6
A Specifications
B General Measurement Considerations
Measurement considerations .................................................................... B-2
Ground loops ...................................................................................... B-2
Triboelectric effects ............................................................................. B-3
Piezoelectric and stored charge effect
s .............................................. B-3
Electrochemical effects ....................................................................... B-4
Humidity .............................................................................................. B-4
Light .................................................................................................... B-4
Electrostatic interference .................................................................... B-4
Magnetic fields .................................................................................... B-5
Electromagnetic Interference (EMI) .................................................... B-5
C Example Programs
Programming examples ............................................................................ C-2
1000 readings/second into internal
buffer ........................................... C-2
900 readings/second to IEEE-488
bus ............................................... C-3
3000 readings into internal buffer ....................................................... C-4

Keithley 6485 Specifications

General

Model	Keithley 6485
Category	Picoammeter
Input Impedance	>10^14 Ohms
Voltage Burden	<200µV
Accuracy	0.4% of reading
Voltage Source Range	Not Applicable
Voltage Source Resolution	Not Applicable
Voltage Source Accuracy	Not Applicable
Interface	IEEE-488
Power Requirements	100V to 240V AC, 50/60Hz
Dimensions	89 mm high x 214 mm wide x 369 mm deep (3.5 in x 8.4 in x 14.5 in)