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Keithley 6487 User Manual

Keithley 6487
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1-26 Getting Started Model 6485 and 6487 User’s Manual
Menu
Many aspects of operation are configured through the menus summarized in Table 1-3 and
Table 1-4. Refer to the section listed in the table
for in-depth information. To access the
menu, press the MENU key. Use the
¹ and ƒ RANGE keys to scroll through the menu items
and the
ß and © cursor keys to change options. Press ENTER to save any changes made
and then leave the menu. Press EXIT to leave the menu without saving changes.
NOTE 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
Model 6485 MENU structure
Menu item Description Reference
CAL Provides path to the following calibration submenu items:
VOFFSET, COUNT, RUN, DATES, UNLOCK, LOCK, and
SA
VE.
Instruction Manual
Section 16
TSTAMP Timestamp format can be ABSolute or DELTa. Section 6
UNITS Readings can be displayed in ENGineering units or
SCIentific notation.
TEST Run display or key tests. Instruction Manual
Section 17
SNUM Displays the unit’s serial number.
LFREQ Line frequency can be manually set to 50 or 60 Hz or
AUTOmatically set. The number after AUTO indicates
pre
sent detected frequency value.
“Line frequency,”
page 1-19

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Keithley 6487 Specifications

General IconGeneral
TypePicoammeter/Voltage Source
Current Measurement Range20 fA to 20 mA
InterfacesGPIB, RS-232
Voltage Burden< 200 µV
Input Impedance>10^14 Ω
Power100 V / 120 V / 220 V / 240 V
Basic Current Measurement Accuracy0.4%

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