Keithley 6487 Reference Manual

Model 6487 Reference Manual IEEE-488 Bus Overview D-15
E (Bus Driver Type) — The instrument has open-collector bus drivers (E1).
TE (Extended Talker Function) — The instrument does not have extended talker capa-
bilities (TE0).
LE (Extended Listener Function) — The instrument does not have extended listener
capabilities (LE0).

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%