Geräte Informationen:

Keithley 485 Digital Multimeter
Hersteller:
Keithley
Modell: 485
Datum: 1984
Kategorie: Messgeräte
Gruppe: Digital Multimeter
Beschreibung: Autoranging Picoammeter
Informationen:
                                    The Model 485 Autoranging Picoammeter provides 100fA
sensitivity with 41⁄2-digit resolution in a
low-cost, highly sensitive, easy-to-use instrument. The 485
measures DC current on seven ranges
covering 10 decades from 100fA to 2mA. The input can
withstand overloads as high as 1000V (with
100kΩ limiting resistor) for flexibility in a wide range of
applications in test, research, and student
labs. An analog output linearly converts the incoming
current to voltage for hard copy output or
control loop applications.
In addition to 100fA sensitivity, the 485 has both excellent
accuracy and low voltage burden. One-year accuracy on
the most sensitive range is an impressive 0.4%. The 485’s
input voltage drop (burden) is actively constrained by
feedback techniques to less than 200μV. Thus the 485
makes high accuracy current measurements even in circuits
with very low source voltages.
The 485 has several features that facilitate measuring low
current. In the autorange mode, the 485 maximizes resolution.
The REL button makes readings relative to the baseline (the
reading prior to touching the
button). The LOG button converts the display to the
logarithm (base 10) of the absolute value of the
measured current. Digital calibration is performed from the
front panel or over the bus.
A 100-point data store buffer collects and stores
measurements at one of six automatic reading rates
from three per second to one per hour, or manually with the
STORE button. Minimum and maximum
readings are continuously updated at three per second in the
data store mode.
The addition of the Model 4853 IEEE-488 Interface to the 485
provides fully programmable computer
control. For isolation from the power line or for
portability, the 485 can be battery powered
with the Model 1758 Rechargeable Battery Pack

Folgende Anleitungen sind für obiges Gerät verfügbar:

Keithley -- 485 -- Service- und Bedienungsanleitung
Dateiname: Keithley-3952-Manual-Page-1-Picture
Dokumenttyp: Service- und Bedienungsanleitung
Seitenanzahl: 57
Dateigröße: 2.70 Mbytes (2826166 Bytes)
Sprache: Englisch
Revision:
Dokument-ID/Nummer:
Datum: Januar 1990
Qualität: Gescanntes Dokument, alles ist lesbar.
Upload Datum:
MD5: a0be971c50e0cf3bed3b614c26938a4c
ed2kID: 412f3bba4fd18d9a2bed923763a7395a
Downloads: 136 seit 13 Januar 2013
Informationen:
This instruction manual contains the necessary information
for operating and maintaining the Model 485 Autoranging
Picoammeter and the Model 1758 Rechargeable Battery
Pack. The information is divided into the following sections:

Section 1 contains general information and provides
guidelines for using this manual. Important safety information
is also presented here.

Section 2 contains detailed operation information for the
Model 485.

Section 3 contains the information needed to verify the
accuracy of the Model 485. Performance verification can
be done upon receipt of the unit or whenever the basic accuracy
is in question.

For the more technically oriented, information on theory
of operation, maintenance and servicing is contained in
Section 4 through 6.
Keithley-3952-Manual-Page-1-Picture
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Keithley -- 485 -- Datenblatt
Dateiname: Keithley-5593-Manual-Page-1-Picture
Dokumenttyp: Datenblatt
Seitenanzahl: 2
Dateigröße: 82.64 Kbytes (84625 Bytes)
Sprache: Englisch
Revision:
Dokument-ID/Nummer:
Datum:
Qualität: Elektronisches Dokument, kein Scan, sehr gut lesbar.
Upload Datum:
MD5: 7d87e2eea7ad66cbc8db7dc34094c6e6
ed2kID: 05aee4aed33e8b99c8d2c96f48c6949f
Downloads: 52 seit 07 März 2014
Informationen:
Keithley-5593-Manual-Page-1-Picture
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