Keithley 6485 User Manual

Model 6485 Picoammeter Instruction Manual Remote Operation 9-5
Figure 9-1
IEEE-488 connector
To allow many parallel connections to one instrument, stack the connector. Two screws are
located on each connector to ensure that connections remain secure. Current standards call
for metric threads, which are identified with dark-colored screws. Earlier versions had dif-
ferent screws, which were silver-colored. Do not use these types of connectors on Model
6485 because it is designed for metric threads.
Figure 9-2 shows a typical connecting scheme for a multiunit test system.
Figure 9-2
Multi-unit connections
To avoid possible mechanical damage, stack no more than three connectors on any one
unit.
Instrument
Controller
InstrumentInstrument

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)