Name: Array 3311 RS-232C-zu-TTL-Adapter
Brand: Array Electronic Co Ltd
SKU: 3311
Price: 57.62 GBP
Availability: InStock

Array Electronic Co. Ltd

More about Array Electronic Co. Ltd

Array Electronic Co., Ltd. mit Sitz in Nanjing, China, ist auf die Herstellung elektronischer Produkte spezialisiert, darunter programmierbare elektronische Gleichstromlasten, Gleichstromversorgungen und industrielle Funkfernsteuerungen. Ihre Produktpalette umfasst verschiedene Serien elektronischer Lasten (375X, 372X, 3715A, 371X), Gleichstromversorgungen (366X, 367X, 364X) und Mehrfachausgangsnetzteile. Sie sind besonders für ihre industriellen Funkfernsteuerungssysteme bekannt.

Array Electronic: programmable DC loads and power supplies

Array Electronic makes programmable DC electronic loads and programmable DC power supplies for bench, production and ATE use. An electronic load sinks current from a source under test in a controlled way, so you can characterise power supplies, batteries and converters without a bank of resistors; a programmable supply provides the stable, settable DC for the other side of the test. Both are controlled from the front panel or from a PC, and the larger models accept SCPI commands.

How an electronic load tests a power source

An electronic load replaces a real load with a programmable one: it absorbs power from the source under test, measures voltage and current, and holds whichever quantity you choose. The Array 372XA adds remote sense, so the load measures the voltage at the source's own terminals rather than at the end of the power leads, and the 372XA and 375X accept SCPI commands from a PC over RS-232, USB or GPIB.

Power leads carry the load current; thin sense leads measure the source voltage at its terminals.

CC, CV, CR and CP: the four load modes

The Array 372XA and 375X electronic loads offer four basic modes: constant current (CC), constant voltage (CV), constant resistance (CR) and constant power (CP). In CC the load draws a set current whatever the input voltage; in CV it draws whatever current is needed to hold the source at a set voltage; in CR it behaves as a programmable resistor with current following Ohm's law; in CP it holds the product of voltage and current constant. The 3710A and 3711A offer CC, CR and CP, and the 3715A offers all four.

Each mode holds one quantity fixed: current, voltage, resistance or power.

Transient, list and sequence tests

Transient (dynamic) mode switches the load between two levels to see how a source copes with a changing load. On the 372XA and 375X the transient modes are continuous, pulsed and toggled, with time settings from 10 microseconds and a maximum frequency of 50 kHz. On the 375X, list mode runs up to 50 steps with loop counts, and the maximum current slew rate is 10 to 22 A/us depending on model. On the 375XA the SCPI function command selects static, transient or list operation (FUNC STAT, FUNC TRAN, FUNC LIST).

Array electronic loads and power supplies at a glance

Model	Type	Ratings	Modes or outputs	Interfaces
Array 375X Series	DC electronic load	100 to 260 A, 0 to 240 V, 1,500 to 5,000 W (five models)	CC, CV, CR, CP; transient to 50 kHz	RS-232, USB, GPIB (GPIB optional); SCPI
Array 372XA Series	DC electronic load	See product page	CC, CV, CR, CP; transient to 50 kHz; remote sense	RS-232, USB, GPIB (options); SCPI
Array 3715A	DC electronic load	0 to 30 A, 0 to 360 V, 200 W	CC, CV, CR, CP; up to 50 sequence steps	RS-232; SCPI
Array 3711A	DC electronic load	0 to 30 A, 0 to 360 V, 300 W	CC, CR, CP; 10-step program	PC control (RS-232, RS-485, USB via adaptors)
Array 3710A	DC electronic load	0 to 30 A, 0 to 360 V, 150 W	CC, CR, CP; 10-step program	PC control (RS-232, RS-485, USB via adaptors)
Array 364XA Series	Programmable DC supply	3644A 18 V/5 A; 3645A 36 V/3 A; 3646A 72 V/1.5 A	1 output, CV and CC; 10 stored settings	PC control (RS-232, RS-485, USB via adaptors)
Array 366XA Series	Programmable DC supply	See product page	See product page	See product page
Array 367XA Series	Switch-mode DC supply, 800 W	3672A 35 V/22.5 A to 3675A 200 V/4 A	1 output, adjustable from 0 V	RS-232; USB and GPIB per product page; SCPI
Array 3631A	Triple-output linear supply, 80 W	6 V/5 A plus tracking +/-25 V/1 A	3 outputs; 10 stored states	USB, RS-232, optional GPIB; SCPI

Programmable power supply concepts

A programmable DC power supply holds a set voltage (constant voltage, CV) until the load asks for more than the set current limit, then switches to constant current (CC) and lets the voltage fall. The 364XA series stores 10 settings and can be connected in series or parallel to extend voltage or current. The 367XA is a switch-mode design that adjusts continuously from 0 V, and the 3631A combines an isolated 6 V channel with a tracking pair of +/-25 V outputs for op-amp and balanced circuits. Pair a supply with an electronic load to check regulation, current limit and transient response of a design.

Interfaces and adaptors

SCPI: the 375X, 372XA, 3715A, 367XA and 3631A accept SCPI commands, so they can sit in an ATE system alongside other programmable instruments.
GPIB: the Array 3315 GPIB Interface adds GPIB to supported instruments; on the 372XA and 375X the GPIB address is set from the front panel in the range 0 to 30.
USB: the Array 3316 USB Interface and the Array 3312 USB to TTL Adapter connect a PC over USB.
RS-232: the Array 3311 RS-232C to TTL Adapter connects a PC serial port to the TTL-level port on the 364X and 371X instruments. On the 375XA the RS-232 baud rate is selectable from 2400 to 115200 (default 9600).
RS-485: the Array 3313 RS-232C to RS-485 Converter supports multidrop networks, and the Array 3314 RS-485 to TTL Converter converts the instrument's TTL signals to RS-485.

Remote sense and protection

Remote sense on the 372x loads uses two terminals, SENSE+ and SENSE-, and compensates for the voltage drop in the power supply output and the input wiring. Use it when you test a low-voltage, high-current source, where lead resistance would otherwise make the measured voltage too low. The loads also protect themselves with over-current, over-voltage, over-power, over-temperature and reverse-polarity protection.

Typical applications

Testing the load regulation, current limit and transient response of DC power supplies and converters with a 372XA or 375X
Battery discharge testing in CC or CP mode with a 3711A
Fuel cell and solar cell testing, where a low minimum operating voltage matters
Powering circuits under development from a 364XA or 3631A bench supply
Automated production test, controlling the instruments from a PC over SCPI

Frequently asked questions

What are CC, CV, CR and CP on an electronic load?

They are the four load modes: constant current, constant voltage, constant resistance and constant power. The Array 375X, 372XA and 3715A offer all four.

What does remote sense do?

Remote sense measures the voltage at the source's terminals through separate SENSE+ and SENSE- leads, so the voltage drop in the power leads does not affect the reading. The 372XA provides it.

Which Array electronic load should I choose?

The 3710A (150 W) and 3711A (300 W) suit 360 V, 30 A bench work, the 3715A adds CV mode and SCPI, and the 375X covers 1,500 to 5,000 W at up to 240 V.

How do I control an Array instrument from a PC?

The 375X and 372XA support SCPI over RS-232, USB and GPIB. For the 364X and 371X instruments, use an adaptor such as the 3311, 3312 or 3315.

Can I connect several instruments on one serial line?

Yes. The 3313 RS-232C to RS-485 Converter supports multidrop RS-485 networks, with a unique address on each instrument.

Source: Array Electronic Co., Ltd product documentation and user manuals. Need help choosing a model? Ask our engineers.

Array 3311 RS-232C-zu-TTL-Adapter

Array 3311 RS-232C-zu-TTL-Adapter

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Array Electronic Co Ltd

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