Keithley 428 Wzmacniacz
Producent:
Model:
428
Data:
1990
Kategoria:
Grupa:
Opis:
Current Amplifier

Informacja

FEATURES The model 428 Current Amplifier provides current-to-voltage conversion on eight ranges between 10³V/A and 10¹⁰V/A (10¹¹V/A with X1O gain enabled). Very fast response time allows the unit to be used in difficult applications such as in measuring very small, transient currents. Key model 428 features include: • Enhanced current suppression: multiple current suppression ranges between ±5nA and ±5mA allow a wide range of steady-state currents to be suppressed. An automatic suppression feature simplifies the current suppression process. • Programmable bias voltage: allows a fixed DC bias voltage from ±2.5mV to ±5V to be applied to the device connected to the input of the model 428. • Fast response time: 2µsec rise time (10-90%) at 10³ and 10⁴ V/A gain (and 10⁵V/A with xlO gain enabled) for fast current to voltage conversion. • Programmable rise time Filter The rise time of the Filter can be programmed for values between 10µsec and 300msec. • Zero check: opens the input thus zeroing the output for easy checking of instrument offsets. Zero correct will automatically zero the input amplifier's voltage offset, to typically <50µV of offset • Ease of use: simplified front panel design and versatile firmware for easy front panel setup and use. • IEEE-488 Interface (Model428-PROG only): allows the unit to be programmed and controlled from a computer for automated instrument operation. • Adjustable display intensity: normal/dim/off display modes for low-light or photosensitive applications.

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Instrukcja serwisowa
Typ ręczny:
Instrukcja serwisowa
Strony:
23
Rozmiar:
707.53 Kbytes (724514 Bytes)
Język:
english
Rewizja:
A
Ręczny ID:
428-903-01
Data:
1990 01 01
Jakość:
Skanowany dokument, wszystko czytelne.
Data przesłania:
2018 08 23
MD5:
529622f716f7a31bb9cc53155b7b361d
Pobrane:
478

Informacja

Quick Reference Guide This Quick Reference Guide includes information on front panel operation for both the Model 428-MAN and the Model 428-PROG, as well as IEEE-488 operation information for the Model 428-PROG.

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Instrukcja obsługi
Typ ręczny:
Instrukcja obsługi
Strony:
211
Rozmiar:
7.12 Mbytes (7464385 Bytes)
Język:
english
Rewizja:
D
Ręczny ID:
428-901-01
Data:
1999 02 01
Jakość:
Skanowany dokument, wszystko czytelne.
Data przesłania:
2018 08 23
MD5:
b334e4e229d4a70b942e7a95cbd5f5d3
Pobrane:
603

Informacja

Contains information on model 428 features, specifications, and Accessories. SECTION 1 General Information Covers introductory information on using the model 428 from the front panel and over the IEEE-488 bus (Model 428-PROG only). SECTION 2 Getting Started Supplies in-depth information about using the Model428 from the front panel SECTION 3 Front Panel Operation Details IEEE-488 information, including general commands and device-dependent commands. Section 4 applies only to the Model 428-PROG. SECTION 4 IEEE-488 Reference Outlines the verification procedures for checking current-to-voltage conversion accuracy and the functionality of the suppress and voltage bias circuits. SECTION 5 Performance Verification Gives a detailed discussion of the various circuits within the instrument SECTION 6 Theory of Operation Covers such important service information as fuse replacement, adjustments, and troubleshooting. SECTION 7 Service Information Lists replacement parts and covers how to obtain parts. SECTION 8 Replaceable Parts

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