Keithley 6487 Reference Manual

B-6 Status and Error Messages Model 6487 Reference Manual
klqb SCPI-confirmed messages are described in Volume 2: Command Reference of
the Standard Commands for Programmable Instruments. Refer to the
:SYSTem:ERRor? command.
+950
+951
+952
+953
+954
+955
+956
+957
+958
+960
+961
+962
+963
+965
+966
DDC Status Model:
Rdg overflow
Rdg ready
Buffer full
IDDC error
IDDCO error
Trig overrun
No remote
Number error
DDC ready
DDC Mode IDDC Error
DDC Mode IDDCO Error
Keithley 6487 Serial Poll Byte Events:
DDC Ready
DDC Reading Done
DDC Buffer Full
DDC Reading overflow
SE
SE
SE
EE
EE
EE
EE
EE
SE
EE
EE
SE
SE
SE
SE
EE = error event
SE = status event
SYS = system error event
NOTE: Errors and status messages with a positive number are instrument-
dependent. Negative errors are reserved by SCPI.
* Measurement events are flagged in Measurement Event Register, standard
events are flagged in Standard Event Register, operation events are flagged in
Operation Event Register, and questionable events are flagged in Questionable
Event Register. See Section 10 for details.
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%