Keithley 6485 User Manual

G-2 IEEE-488 and SCPI Conformance Information Model 6485 Picoammeter Instruction Manual
Introduction
The IEEE-488.2 standard requires specific information about how the Model 6485 imple-
ments the standard. Paragraph 4.9 of the IEEE-488.2 standard (Std 488.2-1987) lists the
documentation requirements. Table G-1 provides a summary of the requirements and pro-
vides the information or references the manual for that information. Table G-2 lists the cou-
pled commands used by the Model 6485.
The Model 6485 complies with SCPI version 1991.0. Table 14-1 through Table 14-8 list the
SCPI confirmed commands and the non-SCPI commands implemented by the Model 6485.
Table G-1
IEEE-488 documentation requirements
Requirements Description or reference
(1)
(2)
(3)
(4)
(5)
(a)
(b)
(c)
(d)
(e)
(6)
(7)
(8)
(9)
(10)
(11)
(12)
(13)
(14)
IEEE-488 Interface Function Codes.
Behavior of 6485 when the address is set outside
the range 0-30.
Behavior of 6485 when valid address is entered.
Power-On Setup Conditions.
Message Exchange Options:
Input buffer size.
Queries that return more than one response
message unit.
Queries that generate a response when parsed.
Queries that generate a response when read.
Coupled commands.
Functional elements required for SCPI commands.
Buffer size limitations for block data.
Syntax restrictions.
Response syntax for every query command.
Device-to-device message transfer that does not
follow rules of the standard.
Block data response size.
Common Commands implemented by 6485.
Calibration query information.
Trigger macro for *DDT.
See Appendix F.
Cannot enter an invalid address.
Address changes and bus resets.
Determine by :SYSTem:POSetup
(Section 14).
2048 bytes.
None.
All queries (Common Commands
and SCPI).
None.
See Table G-2.
Contained in SCPI command sub-
systems tables (see Table 14-1
through Table 14-8).
Block display messages: 12 char-
acters max.
See Programming Syntax in
Section 10.
See Programming Syntax in
Section 10.
None.
See Display Subsystem in
Section 14.
See Common Commands in
Section 12.
Section 14.
Not applicable.

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)