Keithley 228A Źródło prądu
Producent:
Model:
228A
Data:
1984
Kategoria:
Grupa:
Opis:
Voltage / Current Source

Informacja

INTRODUCTION The model 228 Voltage/Current Source is both a constant voltage and constant Current source with front panel and IEEE operation. The model 228 can be used as a constant Voltage Source or a constant Current source. It has four quadrant operation. This means that the voltage or current sources can operate as a source or a sink in either positive or negative polarities. Full power capability of 1OOW may be obtained in any quadrant. Parameter entry is done in one of two ways. Either using the data keypad to enter the desired value into the display or using the display modify function. The display modify function allows the user to modify either display by selecting a digit of the display and incrementing or decrementing that digit with the appropriate keys. With the carry, borrow and autorepeat capability, front panel operation is flexible and easy to program. The user selects the range with the decimal point. The model 228 has a 100 point data memory that allows the user to store up to 100 unique values of current, voltage and dwell time for future use. Once a particular level is stored in the data memory, the user need not reprogram that level. The output terminals are located on a quick disconnect board that inserts into the rear panel of the mainframe. The output is disconnected from the quick disconnect board when it is removed from the mainframe. FEATURES The model 228 includes the following features: Six ranges that allow a wide variety of voltage/current values. Seven front panel programs. The programs include: Program 1 Copy for duplicating memory location information. Program 2 Sink for sink only operation. Program 3 IEEE for changing IEEE primary address. Program 4 MOD V for modulating output voltage. Program 5 MOD 1 for modulating output current. Program 6 Test for model 228 self test. Program 9 Reset for resetting the model 228 to factory set values. See paragraph 3.13.7 Dual displays for easy reference of the instrument’s status. The left display has two display modes (voltage and memory step). The right display also has two display modes amps and seconds). Two methods of modifying the source or sink value: Data entry from the data keypad, and increment or decrement of displayed valued using the decade keys. 100 point data memory to store up to 100 unique values of voltage, current and dwell time. Each location also includes: sink mode status and voltage current modulation status. All information stored in a memory location is battery backed up. This means that if the instrument is powered down, the stored information (voltage, current and dwell time parameters) remains in a particular location until changed by the user. OPERATE/STANDBY switch that places the output in either the operate mode (displayed value is present at output) or in the standby mode (output is programmed to approximately zero). Compliance status is easy to read on the front panel compliance graph. The graph shows the user at a glance how the model 228 is operating (source or sink polarity and voltage or current compliance). IEEE-488 bus operation is standard. This enables the Model 228 to be incorporated into a system that uses programmed control over the IEEE-488 bus. Single step, single cycle and continuous memory modes control the sequence between data points in the 100 point data memory. The program mode may be controlled in one of three ways; using the front panel START/STOP key, the external trigger pulse or by commands over the IEEE-488 bus. Output terminals are located on the quick disconnect board for optimum safety. The output terminals, the sense terminals, current monitor terminals and the external modulation terminals are also located on the quick disconnect board. Several quick disconnect boards may be wired with their own unique wiring ‘configuration. When one configuration is required, simply insert into the mainframe. In this way, cumbersome rewiring of one board is avoided. Remote and Local Sensing. This allows the user to sense at the output terminals or at the load or source. Remote sensing compensates for the effects of the l*R lead drop by maintaining regulation at the load instead of at the output terminals of the model 228. Four Quadrant Operation. This means that the voltage or current outputs can operate as a source or a load in either positive or negative polarities. The front panel compliance graph shows the user where the model 228 is operating (source or sink).

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Instrukcja obsługi
Typ ręczny:
Instrukcja obsługi
Strony:
38
Rozmiar:
1.04 Mbytes (1085336 Bytes)
Język:
english
Rewizja:
Ręczny ID:
228A-904-01
Data:
Jakość:
Skanowany dokument, wszystko czytelne.
Data przesłania:
07 marzec 2014
MD5:
35c6e5299d50814b00f60a266c3dd2e1
Pobrane:
512

Informacja

Application and Reference Guide This booklet has been written to help the user understand the operation and specifications of the Model 228 Voltage/Current Source. The chapters in this booklet have been written to aid the user in some applications. Terms relating to the V/I source such as: stability, line regulation, load regulation and sensing are defined in the glossary. For a complete explanation of the instrument including front panel controls and IEEE-488 bus operation refer to the model 228 Instruction Manual (Document Number 228-901-01).

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Instrukcja obsługi
Typ ręczny:
Instrukcja obsługi
Strony:
56
Rozmiar:
632.38 Kbytes (647554 Bytes)
Język:
english
Rewizja:
A
Ręczny ID:
228-903-01
Data:
Jakość:
Skanowany dokument, czytając częściowo źle, nie częściowo czytelny.
Data przesłania:
07 marzec 2014
MD5:
69072755034a5def5bdd8f023a48e6ac
Pobrane:
579

Informacja

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Dane techniczne
Typ ręczny:
Dane techniczne
Strony:
2
Rozmiar:
798.05 Kbytes (817201 Bytes)
Język:
english
Rewizja:
Ręczny ID:
Data:
Jakość:
Skanowany dokument, wszystko czytelne.
Data przesłania:
07 marzec 2014
MD5:
81f553d1105ed533ec4fe949eff8b0cf
Pobrane:
485
Serwis i User Manual
Typ ręczny:
Serwis i User Manual
Strony:
163
Rozmiar:
10.76 Mbytes (11285009 Bytes)
Język:
english
Rewizja:
E
Ręczny ID:
228A-901-01
Data:
01 grudzień 2000
Jakość:
Dokument elektroniczny, bez skanowania, bardzo dobrze czytelne.
Data przesłania:
22 sierpień 2018
MD5:
8eafcd91d8feab1d9d4f26ab62451a50
Pobrane:
271

Informacja

This manual contains information necessary for operating, programming and servicing the model 228 Voltage/Current Source and is divided into the following sections: 1. Section 2 contains safety instructions and a general operating procedure. 2. Section 3 contains front and rear panel descriptions, a general operating procedure and specific operating examples showing how to use the model 228. 3. Section 4 contains information pertaining to the IEEE-488 bus, including primary address selection, device- dependent command programming, bus connection and several sample programs. 4. Section s includes a procedure to verify the performance of the model 228. 5. Section 6 contains theory of operation with detailed schematics and block diagrams. This section facilitates understanding of the individual circuits of the model 228. 6. Section 7 contains servicing information for the Model 228. Calibration, troubleshooting, line voltage selection, fuse replacement and static sensitive device information is contained in this section. 7. Section 8 gives replaceable parts information.

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Serwis i User Manual
Typ ręczny:
Serwis i User Manual
Strony:
130
Rozmiar:
12.36 Mbytes (12963869 Bytes)
Język:
english
Rewizja:
D
Ręczny ID:
228A-901-01
Data:
Jakość:
Skanowany dokument, wszystko czytelne.
Data przesłania:
02 marzec 2014
MD5:
dc4d99251839c0608de17d1dec56d0e8
Pobrane:
823

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