ASR-2050R Series Programmable AC/DC Power Source

Key Features

500 VA output power for versatile AC/DC testing
Compact 3U half-rack mountable design
Wide output voltage range: 0–310 Vrms / 0–425 VDC
Programmable frequency range 45 Hz to 500 Hz
Arbitrary waveform and transient simulation capabilities
Real-time measurement of voltage, current, and power
Multiple interfaces: USB, LAN, RS-232, optional GPIB
Built-in protections OVP, OCP, OTP
SCPI support for seamless system integration
Ideal for R&D, production, and compliance testing

The ASR-2050R Series Programmable AC/DC Power Source is a compact yet powerful 500 VA unit designed for high-precision testing in both AC and DC modes, housed in a 3U half-rack enclosure ideal for integration into space-constrained test benches and rack systems. It supports single-phase output with a wide voltage range of 0–310 Vrms (AC) or 0–425 VDC, and a frequency range of 45 Hz to 500 Hz, making it suitable for simulating global power conditions. The unit features advanced arbitrary waveform generation, allowing users to replicate custom or distorted waveforms for rigorous stress testing of devices under non-ideal power conditions. It supports transient and sequence simulations, inrush current, and power line disturbance testing, crucial for compliance verification and power quality evaluation. The ASR-2050R offers precise measurements of voltage, current, power, crest factor, and power factor in real time, enhancing its value in design validation and production testing. With multiple remote control interfaces including USB, LAN, RS-232, and optional GPIB, along with SCPI command support and bundled PC software, it provides seamless automation and integration into test systems. The front panel features a TFT LCD display and intuitive keypad for local control, while built-in protection mechanisms such as OVP, OCP, and OTP ensure safe operation across diverse applications including consumer electronics, industrial equipment, renewable energy devices, and automotive power modules.

ASR-2000 Specifications

The specifications apply when the ASR-2000 is powered on for at least 30 minutes under +20°C~+30°C.

Input Ratings (AC rms)

Model		ASR-2050/ASR-2050R	ASR-2100/ASR-2100R
Nominal input voltage		100 Vac to 240 Vac
Input voltage range		90 Vac to 264 Vac
Phase		Single phase, Two-wire
Input frequency range		47 Hz to 63 Hz
Max. power consumption		800 VA or less	1500 VA or less
Power factor^*1	100Vac	0.95 (typ.)
	200Vac	0.90 (typ.)
Max. input current	100Vac	8 A	15 A
	200Vac	4 A	7.5 A

*1. For an output voltage of 100 V/200 V (100V / 200V range), maximum current, and a load power factor of 1.

AC Mode Output Ratings (AC rms)

Model		ASR-2050/ASR-2050R	ASR-2100/ASR-2100R
Voltage	Setting Range^*1	0.0 V to 175.0 V / 0.0 V to 350.0 V
	Setting Resolution	0.1 V
	Accuracy^*2	±(0.5 % of set + 0.6 V / 1.2 V)
Output phase		Single phase, Two-wire
Maximum current^*3	100 V	5 A	10 A
	200 V	2.5 A	5 A
Maximum peak current^*4	100 V	20 A	40 A
	200 V	10 A	20 A
Power capacity		500 VA	1000 VA
Frequency	Setting range	AC Mode: 40.00 Hz to 999.9 Hz, AC+DC Mode: 1.00 Hz to 999.9 Hz
	Setting resolution	0.01 Hz (1.00 to 99.99 Hz), 0.1 Hz (100.0 to 999.9 Hz)
	Accuracy	For 45 Hz to 65 Hz: 0.01% of set For 40 Hz to 999.9 Hz: 0.02% of set
	Stability^*5	± 0.005%
Output on/off phase		0.0° to 359.9° variable (setting resolution 0.1°)
DC offset^*6		Within ± 20 mV (TYP)

*1. 100 V / 200 V range

*2. For an output voltage of 17.5 V to 175 V / 35 V to 350 V, sine wave, an output frequency of 45 Hz to 65 Hz, no load, DC voltage setting 0V (AC+DC mode) and 23°C ± 5°C

*3. For an output voltage of 1 V to 100 V / 2 V to 200 V. Limited by the power capacity when the output voltage is 100 V to 175 V / 200 V to 350 V. If there is the DC superimposition, the current of AC+DC mode satisfies the maximum current. In the case of lower than 40 Hz, and the ambient temperature is 40°C or higher, the maximum current will be decrease.

*4. With respect to the capacitor-input rectifying load. Limited by the maximum current.

*5. For 45 Hz to 65 Hz, the rated output voltage, no load and the resistance load for the maximum current, and the operating temperature.

*6. In the case of the AC mode and output voltage setting to 0 V.

Output Rating for DC Mode

Model		ASR-2050/ASR-2050R	ASR-2100/ASR-2100R
Voltage	Setting Range^*1	-250 V to +250 V / -500 V to +500 V
	Setting Resolution	0.1 V
	Accuracy^*2	±(\|0.5 % of set\| + 0.6 V / 1.2 V)
Maximum current^*3	100 V	5 A	10 A
Maximum current^*3	200 V	2.5 A	5 A
Maximum peak current^*4	100 V	20 A	40 A
Maximum peak current^*4	200 V	10 A	20 A
Power capacity		500 W	1000 W

*1. 100 V / 200 V range

*2. For an output voltage of -250 V to -25 V, +25 V to +250 V / -500 V to -50 V, +50 V to +500 V, no load, AC volatge setting 0V (AC+DC mode) and 23℃

± 5℃

*3. For an output voltage of 1.4 V to 100 V / 2.8 V to 200 V. Limited by the power capacity when the output voltage is 100 V to 250 V / 200 V to 500 V.

*4. Within 5 ms, Limited by the maximum current.

Output Voltage Stability

Model	ASR-2050/ASR-2050R	ASR-2100/ASR-2100R
Line regulation^*1	±0.2% or less
Load regulation^*2	0.15% @45 – 65Hz 0.5% @DC, all other frequencies (0 to 100%, via output terminal)
Ripple noise^*3	0.7 Vrms / 1.4 Vrms (TYP)

*1. Power source input voltage is 100 V, 120 V, or 230 V, no load, rated output.

*2. For an output voltage of 75 V to 175 V / 150 V to 350 V, a load power factor of 1, stepwise change from an output current of 0 A to maximum current (or its reverse), using the output terminal on the rear panel.

*3. For 5 Hz to 1 MHz components in DC mode using the output terminal on the rear panel.

Output Voltage Waveform Distortion Ratio, Output Voltage Response Time, Efficiency

Model	ASR-2050/ASR-2050R	ASR-2100/ASR-2100R
Output voltage waveform distortion ratio^*1	0.5 % or less
Output voltage response time^*2	100 us (TYP)
Efficiency^*3	70 % or more

*1. At an output voltage of 50 V to 175 V / 100 V to 350 V, a load power factor of 1, and in AC and AC+DC mode.

*2. For an output voltage of 100 V / 200 V, a load power factor of 1, with respect to stepwise change from an output current of 0 A to the maximum current (or its reverse). 10% ~ 90% of output voltage

*3. For AC mode, at an output voltage of 100 V / 200 V, maximum current, and load power factor of 1 and sine wave only.

Measured Value Display

All accuracy of the measurement function is indicated for 23 °C±5 °C.

Model

ASR-2050/ASR-2050R

ASR-2100/ASR-2100R

Voltage

RMS, AVG

value^*1

Resolution

0.1 V

Accuracy^*2

For 45 Hz to 65 Hz and DC: ±(0.5 % of reading + 0.3 V / 0.6 V) For 40 Hz to 999.9 Hz: ±(0.7 % of reading + 0.9 V / 1.8 V)

	PEAK value	Resolution	0.1 V
		Accuracy	For 45 Hz to 65 Hz and DC: ±(\|2 % of reading\| + 1 V / 2 V)
Current	RMS, AVG value	Resolution	0.01 A
		Accuracy^*3	For 45 Hz to 65 Hz and DC: ±(0.5 % of reading + 0.02 A / 0.02 A) For 40 Hz to 999.9 Hz: ±(0.7 % of reading + 0.04 A / 0.04 A)	For 45 Hz to 65 Hz and DC: ±(0.5 % of reading + 0.04 A / 0.02 A) For 40 Hz to 999.9 Hz: ±(0.7 % of reading + 0.08 A / 0.04 A)
	PEAK value	Resolution	0.01 A
		Accuracy^*4	For 45 Hz to 65 Hz and DC: ±(\|2 % of reading\| + 0.2 A / 0.1 A)	For 45 Hz to 65 Hz and DC: ±(\|2 % of reading\| + 0.2 A / 0.1 A)
Power	Active (W)	Resolution	0.1 / 1 W
		Accuracy^*5	±(2 % of reading + 0.5 W)	±(2 % of reading + 1 W)
	Apparent (VA)	Resolution	0.1 / 1 VA
		Accuracy^56	±(2 % of reading + 0.5 VA)	±(2 % of reading + 1 VA)
	Reactive (VAR)	Resolution	0.1 / 1 VAR
		Accuracy^57	±(2 % of reading + 0.5 VAR)	±(2 % of reading + 1 VAR)
Load power factor		Range	0.000 to 1.000
		Resolution	0.001
Load crest factor		Range	0.00 to 50.00
		Resolution	0.01
Harmonic voltage Effective value (rms) Percent (%) (AC-INT and 50/60 Hz only)		Range	Up to 100th order of the fundamental wave
		Full Scale	175 V / 350 V, 100%
		Resolution	0.1 V, 0.1%
		Accuracy^*8	Up to 20th ±(0.2 % of reading + 0.5 V / 1 V) 20th to 100th ±(0.3 % of reading + 0.5 V / 1 V)
Harmonic current Effective value (rms) Percent (%) (AC-INT and 50/60 Hz only)		Range	Up to 100th order of the fundamental wave
		Full Scale	5 A / 2.5 A, 100%	10 A / 5 A, 100%
		Resolution	0.01 A, 0.1%
		Accuracy^*3	Up to 20th ±(1 % of reading + 0.1 A / 0.05 A) 20th to 100th ±(1.5 % of reading + 0.1 A / 0.05 A)	Up to 20th ±(1 % of reading + 0.2 A / 0.1 A) 20th to 100th ±(1.5 % of reading + 0.2 A / 0.1 A)

*1. The voltage display is set to RMS in AC/AC+DC mode and AVG in DC mode.

*2. AC mode: For an output voltage of 17.5 V to 175 V / 35 V to 350 V and 23 °C ± 5 °C. DC mode: For an output voltage of 25 V to 250 V / 50 V to 500 V and 23 °C ± 5 °C.

*3. An output current in the range of 5 % to 100 % of the maximum current, and 23 °C ± 5 °C.

*4. An output current in the range of 5 % to 100 % of the maximum peak current in AC mode, an output current in the range of 5 % to 100 % of the maximum instantaneous current in DC mode, and 23 °C ± 5 °C. The accuracy of the peak value is for a waveform of DC or sine wave.

*5. For an output voltage of 50 V or greater, an output current in the range of 10 % to 100 % of the maximum current, DC or an output frequency of 45 Hz to 65 Hz, and 23 °C ± 5 °C.

*6. The apparent and reactive powers are not displayed in the DC mode.

*7. The reactive power is for the load with the power factor 0.5 or lower.

*8. An output voltage in the range of 17.5 V to 175 V / 35 V to 350 V and 23 °C ± 5 °C.

Others

Model		ASR-2050/ASR-2050R	ASR-2100/ASR-2100R
Protections		OCP, OTP, OPP, FAN Fail
Display		TFT-LCD, 4.3 inch
Memory Function		10 sets for Store and Recall settings
Arbitrary Wave	Number of memories	16 (nonvolatile)
	Waveform length	4096 words

General Specifications

Model			ASR-2050/ASR-2050R	ASR-2100/ASR-2100R
Interface	Standard	USB	Type A: Host, Type B: Slave, Speed: 1.1/2.0, USB-CDC
		LAN	MAC Address, DNS IP Address, User Password, Gateway IP Address, Instrument IP Address, Subnet Mask
		EXT Control	External Signal Input External Control I/O
	Factory Optional	GPIB	SCPI-1993, IEEE 488.2 compliant interface
		RS-232C	Complies with the EIA-RS-232 specifications
Insulation resistance	Between input and chassis, output and chassis, input and output		500 Vdc, 30 MΩ or more
Withstand voltage	Between input and chassis, output and chassis, input and output		1500 Vac, 1 minute
EMC			EN 61326-1 (Class A) EN 61326-2-1/-2-2 (Class A) EN 61000-3-2 (Class A, Group 1) EN 61000-3-3 (Class A, Group 1) EN 61000-4-2/-4-3/-4-4/-4-5/-4-6/-4-8/-4-11 (Class A, Group 1) EN 55011 (Class A, Group1)
Safety			EN 61010-1
Environment	Operating environment		Indoor use, Overvoltage Category II
	Operating temperature range		0 °C to 40 °C
	Storage temperature range		-10 °C to 70 °C
	Operating humidity range		20 %rh to 80 % RH (no condensation)
	Storage humidity range		90 % RH or less (no condensation)
	Altitude		Up to 2000 m
Dimensions (mm)			ASR-2000: 285(W)×124(H)×480(D) (not including protrusions) ASR-2000R: 213(W)×124(H)×480(D) (not including protrusions)
Weight			ASR-2000: Approx. 11.5 kg ASR-2000R: Approx. 10.5 kg

External Signal Input (AC+DC-EXT, AC-EXT Mode)

	Specification	Factory Default
Gain setting range	100 V range: 0.0 to 250.0 times	100
	200 V range: 0.0 to 500.0 times	200
Input terminal	BNC connector
Input impedance	1 MΩ
Input voltage range	±2.5 V (A/D resolution 12 bit)
Nondestructive maximum input voltage	±10 V
Gain resolution	0.1 times
Accuracy	±5 % (DC, or 45Hz ~ 65 Hz, gain is at initial value, with rate voltage output, no load)

EXT: Output voltage (V) = External signal input (V) x Gain (V/V)

External Signal Input (AC+DC-ADD, AC-ADD Mode)

	Specification	Factory Default
Gain setting range	100 V range: 0.0 to 250.0 times	100
	200 V range: 0.0 to 500.0 times	200
Input terminal	BNC connector
Input impedance	1 MΩ
Input voltage range	±2.5 V (A/D resolution 12 bit)
Nondestructive maximum input voltage	±10 V
Input frequency range	DC to 999.9 Hz (sine wave) DC to 100 Hz (other than sine wave)
Gain resolution	0.1 times
Accuracy	±5 % (DC, or 45Hz ~ 65 Hz, gain is at initial value, with rate voltage output, no load)

ADD: Output voltage (V) = External signal input (V) x Gain (V/V) + Internal signal source setting (V)

External Synchronous Signal or Line (AC+DC-SYNC, AC-SYNC)

	Specification	Factory Default
Synchronization signal source	External synchronization signal (EXT) or Power input (LINE)	LINE
Synchronization frequency range	40.00 Hz to 999.9 Hz
Input terminal	BNC connector
Input impedance	1 MΩ
Threshold of input voltage	TTL level
Minimum pulse width	500 us
Nondestructive maximum input voltage	±10 V
Resolution	0.01/0.1 Hz
Accuracy	±0.2 Hz

Accessories

CD ROM(User Manual, Programming manual), Safety Guide, Power Cord,
Mains Terminal Cover Set, Remote Sense Terminal Cover Set, GTL-123 Test Lead,
GTL-246 USB Cable

Optional Accessories (factory installed)

ASR-GPIB-2K: GPIB Communication Functions (needed if using ASR-002)
ASR-EU-2K: European Output Outlet (ASR-2000 only)

Optional Accessories

GET-003 Extended Universal Power Socket(ASR-2000R only)
GET-004 Extended European Power Socket(ASR-2000R only)
GRA-439-E Rack Mount Kit(EIA)
GRA-439-J Rack Mount Kit(JIS)
GTL-232 RS-232C Cable, approx. 2 M
GTL-258 GPIB Cable, approx. 2 M, including 25 pins Micro-D connector
ASR-001 Air inlet filter
ASR-002* External Three Phase Control Unit (ASR-2000 Series needs to have RS-232 option)
ASR-C003 Modbus TCP feature

* Basis Requirement of ASR-002 to ASR-Series
1. Must be the three same models of ASR-Series
2. To ASR-2000 Series, the ASR-GPIB-2 K: RS-232+GPIB interface is required.

* Functions of ASR-Series are limited when conducts to ASR-002
1. No DC Output
2. Measurement Items: only current(A), power(W), and PF for each phase
3. No Voltage and Current Harmonic Analysis
4. No Remote Sensing Capability
5. No Arbitrary Waveform Function
6. No Sequence and Simulation Function
7 Not supported External Control I/O
8. No memory Function
9. Only support USB, no LAN port for communication

ASR-2050R Series Programmable AC/DC Power Source