Keithley 6487 Reference Manual

Model 6487 Reference Manual Status and Error Messages B-5
+700
+701
+800
+801
+802
+804
+805
+806
+807
+808
+811
+812
+813
+814
+815
+816
+817
+818
+819
+820
+821
+830
+831
+840
+841
+842
+850
+851
+852
+853
+900
Communication errors:
Invalid system communication
ASCII only with RS-232
Additional (more informative) command
execution errors:
Illegal with storage active
Insufficient vector data
OUTPUT blocked by interlock
Expression list full
Undefined expression exists
Expression not found
Definition not allowed
Expression cannot be deleted
Not an operator or number
Mismatched parentheses
Not a number of data handle
Mismatched brackets
Too many parentheses
Entire expression not parsed
Unknown token
Error parsing mantissa
Error parsing exponent
Error parsing value
Invalid data handle index
Invalid with INFinite ARM:COUNT
Invalid with INFinite TRIG:COUNT
Not allowed with sweep on
Sweep step size too small
Sweep step size too large
Not Allowed with A-V Ohms
Not Allowed with A-V Ohm Buffer
No A-V ohms with Autorange
Too Many A-V Ohms Readings
Internal system error
EE
EE
EE
EE
EE
EE
EE
EE
EE
EE
EE
EE
EE
EE
EE
EE
EE
EE
EE
EE
EE
EE
EE
EE
EE
EE
EE
EE
EE
EE
EE
Table B-1 (c o nt.)
Status and error messages
Number Description Event

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%