Keithley 6487 Reference Manual

Model 6487 Reference Manual DDC Emulation Commands C-11
Sweeps or A-V ohms in DDC mode
Sweeps or A-V ohms are not allowed in the DDC mode. A “SCPI ONLY” message will be
displayed if you attempt to use sweeps or A-V ohms from the front panel.
Status words
The U0, U2, and U9 status words are shown in Figure C-1, Figure C-2, and Figure C-3.

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%