What is an AC signal generator?

 AC signal generator

TFG1900A Series are economical function generator which has two channel outputs, 20ppm frequency accuracy, and can make 16 kinds waveform. Besides that, with multifunction, simple keyboard and digital displaying, it is broadly used in education, personal test and industrial field to meet your basic test requirement.

Features

* Dual channel outputs

* Frequency accuracy 20ppm and 1μHz resolution

* Abundant modulation function AM, FM, PM,

  PWM and FSK

* Provide sweep and burst

* 100MHz Built-in counter

* Standard interface: USB Host & Device

Specifications

		TFG1905A	TFG1910A	TFG1920A
Frequency
Range	Sine	1μHz ~ 5MHz	1μHz ~ 10MHz	1μHz ~ 20MHz
	Square, Pulse	1μHz ~ 5MHz
	Others	1μHz ~ 1MHz
Resolution		1μHz, 6 digits
Accuracy		±20ppm
Waveform
Type		11 build-in waveform(Sine, Square, Ramp, Pulse, etc.) +5 user-defined arbitrary waveforms
Length		4096 points
Sampling Rate		100 MSa/s
Vertical Resolution		10 bits
Amplitude
Range	Frequency≤8MHz	0 ~ 10Vpp(50Ω),  0 ~ 20Vpp(Open circuit)
	Frequency>8MHz	0 ~ 9  Vpp(50Ω),  0 ~ 18Vpp(Open circuit)
Resolution		2mVpp(Amplitude>2Vpp)
		0.2mVpp(Amplitude≤2Vpp)
Offset (Ampl. 0Vpp)
Range		±5Vdc (50Ω), ±10Vdc (Open circuit)
Resolution		2mVdc
Modulation (CHA)
FM,AM,PM,PWM	Carrier Waveform	16 waveforms, Sine, Square, Ramp, etc. (only Pulse for PWM)
	Modulating Waveform	16 waveforms, Sine, Square, Ramp, etc.
	Modulating Frequency	2mHz ~ 20kHz
FSK	Carrier Waveform	16 waveforms, Sine, Square, Ramp, etc.
	Hope Frequency	1μHz ~ 5MHz	1μHz ~ 10MHz	1μHz ~ 20MHz
	Rate	1mHz ~ 100kHz
Sweep (CHA)
Carrier   Waveform		16 waveforms, Sine, Square, Ramp, etc.
Type		Linear or Logarithmic
Sweep Time		50ms ~ 500s
Burst (CHA)
Carrier  Waveform		16 waveforms, Sine, Square, Ramp, etc.
Burst Count		1 ~ 1000000
Internal Period		1μs ~ 500s
Start/Stop Phase		0° ~ 360°
SYNC Output
Waveform Characteristic		Square, rise/fall time ≤ 20ns
Output Level		TTL compatible
Counter
Frequency Range		1Hz ~ 100MHz
Input Amplitude		100mVrms ~ 7Vrms
Period		50ms ~ 5s
General   Characteristics
Power		AC 100 ~ 240V, 45 ~ 65Hz, < 30VA
Display		VFD display
Dimension & Weight		322×256×102mm, Approx.1.5 kg

Serial and Parallel Connection of DC Power Supply

In the electricity experiment, sometimes we need more current or voltage power supply, in this condition, several power supplies can be parallel or serial connected to realize this function. It can be applied in many conditions, such as high power load is required in the electricity circuit, and redundant power supplies are required to strengthen the system's stability. The parallel or serial connection of power supplies can increase the current or voltage output in the electricity circuit.

Along with the technology development, smaller size, and multichannel power supply can meet nowadays engineers and teaching requirements. Suin SK3323/3325/3503 three channels programmable DC power supply is just one example.

Please see the below pictures of the parallel and serial connection of SK3323 and pay attention to some points during the experiment.

1. Connection way. Parallel and serial connection are two normal connection ways.

During serial, the positive terminal of channel 1 should be connected to the negative terminal of channel 2, the current of the serial connection is the same as that in independent channel output, while the voltage is the sum of two channels, which solves the high voltage requirement.

 

Serial connection on SK3323

 

In parallel, you just need to connect as the independent channel output, and press 【PARA】 to enter the parallel connection way. The voltage in parallel remains the same as that in independent channel output, but the current is the sum of two channels, which solves the high current requirement.

 

Parallel connection on SK3323

 

2. Over voltage and over current protection. Parallel or serial connection power supply should have proper control and protection to the current and voltage to make sure the power supply running normally without making any injury to the operator or the instruments. Suin SK3323/3325/3503 power supply has such a function too.

 

If you are interested in it or have any questions, please do not hesitate to contact Suin.

Difference between Logger and Monitor of SA2200

With the increasing power quality problem, more and more people pay attention to power quality. To know more about the power quality, it is necessary to measure, collect, and analyze the data of the power grid.

A logger can record basic parameters such as current, voltage, and power factor, and can also record various abnormal events of power quality, such as voltage fluctuations, harmonics, unbalance, and so on.

Monitor is the real-time measurement and data collection of various power quality indicators to ensure the observation, recording, and dynamic analysis of the power system, and the comprehensive evaluation of power quality indicators to optimize the monitoring system of the whole system. According to the specific characteristics of various indicators, the power quality problem is detected by layers, and a variety of disturbance information is identified, extracted, and analyzed, which provides a credible basis for the development of specific measures to improve power quality and control grid pollution.

The difference between the two is that the Logger records more parameters, and the recording interval can be set but the recording time is shorter, while the power quality monitoring is to monitor specific parameters and the recording time is longer.

Take our Class A power quality analyzer SA2200 as an example:

the recorder function, the shortest time interval can be set to 1s, the duration can also be set to 2 hours, and you can choose the parameters of the record, shown in Fig 2.

 

Fig 1. Logger

 

Fig 2. Parameters of Logger

The measurement parameters of the Monitor are default, the shortest measurement time is 2 hours, and the measurement interval cannot be set, as shown in Fig 3.

 

Fig 3. Monitor

If you want to know more details about these two functions, welcome to inquire.

Introduction of Suin SS7406 Frequency Counter/Timer/Analyzer

Frequency counters are test instruments used in many applications including laboratories, education, and industrial field to measure the frequency and time of signals very accurately. Nowadays high speed and more accurate frequency counters are required by engineers, Suin SS7406 Universal Frequency Counter/Timer/Analyzer comes out in this condition.

Pict 1: SS7406 Front View

 

Main Features:

SS7406 can measure frequency, period, time interval, pulse width, duty cycle, phase difference. Frequency can be tested from 1mHz to 200MHz in two channels. Additionally, several higher frequency options max to 40GHz can be selected in channel 3. 11 digits per second frequency resolution makes it suitable for measurement from short-term phase locked loop jitter to the long-term drift of atomic clocks. 25ps single shot time resolution makes it one of the highest resolution counters in the market.

 

Besides that, SS7406 also can measure frequency ratio, limit, and statistics calculation. This complete measuring function makes it more popular in the market.

 

The standard time base’s nominal frequency is 10MHz. The test can be controlled not only by the internal gate automatically, but also by the external signal triggering. For more stable measurement, there is a high stability crystal oscillator as an optional selection.

 

Advantages:

Unlike conventional counters that only have numeric displays, SS7406 provides live, graphical displays of measurement results. Graphical data is available in two formats: histogram and trendgram. You can select any by your real requirement.

 

Pict 2: Histogram

 

 

Pict 3: Trendgram

 

Meantime, it is designed as 2U instrument case, which can be used not only as a sole benchtop instrument but also in a 19'' equipment cabinet.

New Arrival - Update Version Digital AC Millivolt Meter SM2100 Series

Voltage, current and frequency are the basic three measured parameters in the electrical measurement, of which voltage measurement is very common. As the technology of electronics develops, low voltage measurement becomes more important. Therefore, the millivoltmeter becomes an essential tool. In addition, digital instruments catch users’ fancy because of accurate and convenient reading, higher accuracy, tiny error, higher sensitivity and resolution, and fast measurement speed, so the demand for digital AC millivoltmeter is growing.

The traditional analog voltmeter adopts an average detecting solution, which has a bigger error on the test result, while the current digital multimeter can measure the signal at the millivolt level but is limited by a narrow measurement range.

Considering to above reasons, Suin Instruments adopts an integral amplifier detecting solution to update the new version digital AC millivolt meter SM2100 series, which overcome the defect of the traditional analog voltmeter. Meantime, the instrument applies a 16-bit high-performance CPU and A/D converter and can measure AC voltage 50μVrms to 400Vrms of Sine signal frequencies between 5Hz to 6MHz, which improves the measurement range greatly.

 

Figure 1 – SM2100 Series Working Principle

Dual independent channels are configured on the SM2100 series, thus the measurement for two different signals could be performed at the same time. LED screen with the colorful digits display, clear readings, and better vision, which could display the test result as 3 1/2 digits or 4 1/2 digits simultaneously, and the best solution could reach 0.1μV. Most importantly, the result could also be shown as different units-Vrms, Vpp, dBV, dBm, dB, and W. Ground and Floating setting and maximum undamaged input voltage up to 400Vrms can improve the operation safety greatly.

 

Figure 2- Test result of two channels in five units

CH1: 6MHz, 3mV, CH2: 20Hz, 7V

 

High accuracy, high stability, easy operation, and high safety make the SM2100 series digital AC Millivolt Meter widely used in universities, factories, military units, labs, and scientific institutions, it becomes a necessary basic instrument to measure and test voltage.

 

Figure 3- The test result when input 300V and 100Hz Sine

If users have any questions about the operation, specification, or test plan related to the digital AC millivolt meter, please welcome to contact us according to working time and contact information left on our website. We will do our best to serve you better.

Why is a Power Quality Analyzer So Important?

 

 

A power quality analyzer is a device used to measure electric power signals in order to determine the load’s ability to function properly with that electric power. A power quality analyzer is incredibly helpful, both commercially and in regular, everyday life. Without the correct electric power, electrical equipment may fail prematurely or malfunction.

When do you need a power quality analyzer?

Do you know there’s an electrical issue, but aren’t sure where it is coming from? This happens quite a bit, especially in a large commercial setting. These so-called “mystery disturbances” are upsets to a processor-sensitive equipment operation that don’t seem to correspond to any identifiable source of power disturbance, but are able to be identified with a power quality analyzer. It could be ground loops, lightning, high-speed transients, or even common-mode electrical noise that is the original cause of the problem. If one of these is the problem, you won’t be able to correctly find it without the help of a device. These events occur and are gone in such a brief time frame that they are not able to be identified without the right tools.

Of course, it is quite possible you don’t even know there is a problem. A power quality analyzer may tell you something you didn’t know! This includes that you’re wasting your money spending too much on your monthly electric bill or you are in a dangerous situation.

What can a power quality analyzer do for you?

There are many different factors that contribute to poor quality power. Just because you know a device has an issue doesn’t mean you know what the underlying problem is, or how to fix it. This is where a power quality analyzer comes in. A device like this will be able to track several electrical parameters, which include frequency, AC voltage, and AC current power. Electrical data parameters, which include demand and peak demand, is the term for the actual amount of power that the monitored system uses. This is something you definitely want to know. Peak electrical demand is the maximum amount of electric power that can be used. Most often you will find that the power parameters are measured in watts (W), volt-amperes (VA), and volt-ampere reactive (VAR). Watts are units of electrical power that indicate the rate of energy produced or consumed by an electrical device, while volt-amperes are the current flowing in a circuit multiplied by the voltage of that circuit. This volt-ampere reactive identifies the reactive component of volt-amperes, so they’re very important to know.

 

Which industries need power quality analyzers?

● Manufacturing Industries

Power quality analyzers allow the maintenance managers and operators to take suitable measures to ensure expensive equipment used in manufacturing and process-based operations are safeguarded by means of the right information available and to execute effectively and efficiently.

● Energy Audits

Power quality analyzers allow the property owners or building operators to receive a detailed report on their energy consumption, device efficiencies, and power quality measurements by Metering energy audits. The data provided by the auditors using power quality analyzers will be used for monitoring losses of power and cost allocation.

● Data centers

A power quality analyzer will be used to eradicate challenges that disrupt the effectiveness of systems or critical devices used in data centers and provide a proactive solution to these issues.

● Energy Companies

Appropriate power quality management can be devised by using power quality analyzers to improve power variants and energy efficiencies.

● Telecommunication

The frequent tripping of devices in telecommunication sectors was mostly associated with voltage sags and swells, was further found to increase loads such as short circuits or faults, or by an abrupt reduction in load on a circuit. Thus, a power quality analyzer was found to resolve these issues avoiding costly maintenance of equipment. An optional DC clamp( along with a meter) can be used to check DC parameters in Towers and their healthiness.

● Healthcare

Healthcare sectors use a critical device that is of utmost significance in saving lives, where power quality monitoring devices will ensure the smooth running of devices and protection against unforeseen events that deteriorate the performance.

● Educational Institutions

Power quality analyzers could be used in institutions to monitor and perform in-depth analysis in a controlled setting to rapidly isolate issues, test responses, planning facilities and restructured layouts.

● Commercial Facilities

Power quality analyzers can be used in commercial buildings to maintain daily activities and take proactive actions against damage to critical systems.

 

Where can I find the best power quality analyzer？

 

 

We offer the SA2100 Power Quality Analyzer. SA2100 is a handheld multi-functional device that is designed to measure and analyze single or three-phase power This portable class S device can provide safe, convenient, and accurate measurements for troubleshooting power networks. Please feel free to contact us if you need them.

​Brief Introduction of Network Analyzer

 

What's a network analyzer?

A network analyzer is of microwave millimeter wave testing instrument that can sweep and measure the signal in a high bandwidth so as to confirm the network parameters. The full name of it is microwave network analyzer, which can directly test the complex scattering parameters of active or passive, reversible or irreversible two-ports and single-port networks, and show the amplitude, phase frequency characteristics of each scattering parameter by the way of frequency sweep mode. An automatic network analyzer can correct the errors for the measuring results, and convert to decades of other network parameters, such as Input reflection coefficient, output reflection coefficient, voltage standing wave ratio(VSWR), impedance(or admittance), attenuation (or gain), phase shift and group delay, etc., transmission parameter and isolation and orientation.

Classification of a network analyzer

1. Scalar network analyzer. It can only measure the amplitude of S parameters, and the measuring result includes transmission gain and loss, return loss standing wave ratio, etc.

2. Vector network analyzer. It can measure signals between 5Hz and 110GHz, such as S parameters, amplitude, phase, transmission gain and loss, return loss and standing wave ratio, group delay, reflection coefficient, etc. Because it has more functions than a scalar network analyzer, it has more applications in the development, manufacturing, repair, and metrology fields of new generation military electronic equipment which is represented by phased array radar, also in other fields like aerospace, satellite communications, radar detection and surveillance, teaching experiment, component testing, etc.

Due to the high cost of a vector network analyzer, many buyers will have more consideration before buying it. Considering the cost and actual measuring requirement, many buyers will choose to buy a scalar network analyzer. A spectrum analyzer with a tracking generator can be a simple network analyzer-- scalar network analyzer, which is the best selection for those who have these considerations. Suin SA9100-TG/SA9200-TG Spectrum analyzers are one of the selections for your demands. The below pictures are the filter testing and amplifier testing by the SA9130-TG spectrum analyzer.

 

Fig. 1 Filter testing by SA9130-TG Spectrum analyzer

 

Fig. 2 Amplifier testing by SA9130-TG Spectrum analyzer

 

If you also have these considerations, please contact us for SA9100-TG/SA9200-TG.