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Keithley 6487 User Manual

Keithley 6487
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Table 1-4
Model 6487 MENU structure
Menu item Description Reference
CAL Provides path to the following calibration submenu items:
VOFFSET, COUNT, RUN, VSRC-RUN, DATES,
UNL
OCK, LOCK, and SAVE.
Reference 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. Reference 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
Model 6485 and 6487 User’s Manual Getting Started 1-27
SCPI programming
SCPI programming information is integrated with front panel operation throughout this
manual. SCPI commands are listed in tables and additional information that pertains
exclusively to remote operation is provided after each table. The SCPI tables may refer-
ence you to other sections of this manual.
NOTE SCPI
tables in this manual are abridged. That is, they do NOT include most
optional command words and query commands. See Section 14 of the
Model 6485 Instruction Manual or Model 6487 Reference Manual for a com-
plete listing of SCPI commands.
Optional command words
In order to be in conformance with the IEEE-488.2 standard, the Model 6485/6487
accepts optional command words. Any command word that is enclosed in brackets ([]) is
optional and does not have to be included in the program message. Programming exam-
ples in this manual use the short form and do not include optional command words for
si
mplicity.
Query commands
Most command words have a query form. A query command is identified by the question
mark (?) that follows the command word. A query command requests (queries) the pro-
grammed status of that command. When a query command is sent and Model 6485/6487
is addressed to
talk, the response message is sent to the computer.

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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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