Keithley 6487 Reference Manual

1-12 Getting Started Model 6487 Reference Manual
Menus
Main menus
Many aspects of operation are configured through the main menus summarized in
Table 1-3. Refer to the section listed in the table for in-depth information. To access the
main menus, press the MENU key. Use the and
RANGE keys to scroll through the menu
items and the and
 cursor keys to change options. Press ENTER to save any changes
made and leave the menu. Press EXIT to leave the menu without saving changes.
klqb The MENU key is used to access the menu structure. However, if in remote for
IEEE-488 bus operation (REM annunciator is lit), pressing the menu key has no
effect. Press the LOCAL key to place the unit in local operation, then press the
MENU key to access the menu items.
Table 1-3
Main MENU structure
Menu item Description Reference
CAL Provides path to the following calibration submenu items:
VOFFSET, COUNT, RUN, VSRC-RUN, DATES, UNLOCK,
LOCK, and SAVE. See reference section for verification and
calibration information.
Section 15,
Section 16
TSTAMP Timestamp format can be ABSolute or DELTa. Section 6
UNITS Readings can be displayed in ENGineering units or
SCIentific notation.
Section 6
TEST Run display or key tests. Section 17
SNUM Displays the units serial number. Section 11
LFREQ Line frequency can be manually set to 50 or 60 Hz, or
AUTOmatically set. The number after AUTO indicates present
detected frequency value.
“Line frequency,”
page 1-6

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%