Keithley 6487 User Manual

3-8 Measurements and Sourcing Voltage Model 6485 and 6487 User’s Manual
Figure 3-2
Connections for Model 6487
current measurements
Black (LO)
Red (HI)
237-ALG-2
Cable
Metal Noise Shield
Metal Safety Shield
Safety
Earth
Ground
Green
(Chassis)
Model 6487
120
LINE RATING
50, 60Hz
50 VA MAX
INPUT
(CHANGE IEEE ADDRESS
WITH FRONT PANEL MENU)
IEEE-488
CAT I
TRIGGER LINK
RS-232
MADE IN
U.S. A.
ANALOG OUT
DIGITAL I/O
INTERLOCK
505V
MAX
V-SOURCE OUTPUT
505V PK TO CHASSIS
LO HI
!
!
FUSE LINE
630mAT
(SB)
100 VAC
120 VAC
315mAT
(SB)
220 VAC
240 VAC
505V PK
505V PK
505V PK
SCPI programming
Table 3-4
SCPI commands — basic current measurements
Commands* Description
FUNC ‘CURR’
RANG <Range>
RANG:AUTO <b>
INIT
READ?
Select current function (Model 6487 only).
Select manual range (-0.021 to 0.021A).
Enable (ON) or disable (OFF) auto range.
Trigger reading.
Trigger and return reading(s).
* Zero correct and zero check commands not included. See Table 3-3.
— current measurements

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%