Informations de l’équipement

Keithley 485 Multimètre numérique
Modèle: 485
Date: 1984
Catégorie: Mètres
Groupe: Multimètre numérique
Description: Autoranging Picoammeter
                                    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

Ces manuels sont disponibles pour les équipements ci-dessus :

Type manuel: Service et Manuel de l'utilisateur Keithley-3952-Manual-Page-1-Picture
Pages: 57
Taille: 2.70 Mbytes (2826166 Bytes)
Langue: Anglais
Numéro d’identification:
Date: janvier 1990
Qualité: Document scanné, tous les lisible.
Télécharger date:
MD5: a0be971c50e0cf3bed3b614c26938a4c
Téléchargements: 302 depuis 13 janvier 2013
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.

Type manuel: Fiche technique Keithley-5593-Manual-Page-1-Picture
Pages: 2
Taille: 82.64 Kbytes (84625 Bytes)
Langue: Anglais
Numéro d’identification:
Qualité: Électronique de documents, numérisation sans, bien lisible.
Télécharger date:
MD5: 7d87e2eea7ad66cbc8db7dc34094c6e6
Téléchargements: 184 depuis 07 mars 2014

Type manuel: Manuel de l'utilisateur Keithley-11277-Manual-Page-1-Picture
Pages: 32
Taille: 924.04 Kbytes (946212 Bytes)
Langue: Anglais
Numéro d’identification: 485-903-01 A
Date: 01 janvier 1984
Qualité: Document scanné, tous les lisible.
Télécharger date:
MD5: 35110aa68af83dd5a5d1923862620c60
Téléchargements: 4 depuis 23 août 2018
This reference and programming guide contains condensed
specifications and information which describes the various
features of the Model 485. Each feature is described in
three segments of information. The first segment describes
the features. The second segment gives an exact procedure on
how to use the feature. The third segment gives application
examples. These segments are brief, but the
information presented in this format is designed for a quick
reference of the Model 485 features and functions. Refer to
the Model 485 Instruction Manual for complete information
and essential safety information.

Comments (0)

No comments yet. Be the first!

Add Comment

* Required information
Captcha Image
Powered by Commentics