The next Generation of High-speed Serial Port Challenges Consistency Testing and Diagnostic Tools
The best evaluation of transmitter performance is to use new analysis techniques to accurately identify jitter and noise from sources such as crosstalk or other multi-channel noise coupling. In the common closed eye structure in long channel design, physical layer testing requires advanced technologies, such as channel de embedding and end-to-end link simulation with reference receiver.
High speed serial design challenges:
The smaller device geometry is combined with multi-layer PCB, and buried current limiting signal access is adopted;
Bus behavior with new energy-saving schemes (including frequency switching and clock gating);
Start the test mode in band through the channel, that is, link training and state machine communication with the receiver;
Verify the new signal coding and equalization capability in the high-speed signaling interface;
Increasing the complexity and number of electrical verifications - so many tests, so short a time.
PCIe
PCI Express is a high-speed serial computer expansion bus standard. The proposal of PCIe bus represents the era of the development of traditional parallel bus to high-speed serial bus, which aims to replace the old PCI, PCI-X and AGP bus standards. PCIe has many improvements over the old standard, including higher maximum system bus throughput, fewer pins and smaller physical footprint.
The cloud computing market has the highest demand for high bandwidth PCIe. It needs to double the data transmission rate every three or four years. The data center network needs faster speed to reach 400gbe. More and more deep learning machines also need high speed. PCI Express has released the PCIe 4.0 standard, and PCIe 5.0 is also in progress. The speed can reach 16gt / s and 32gt / s, which is twice or four times the existing speed. However, PCIe 4.0 is still far from popularization, and the main influencing factor is that it is too high.
DDR4
DDR4 is the next generation memory standard for enterprise computing. Compared with the previous generation products, the standard can achieve higher capacity DIMMs (128 GB), double the data rate (3200 MT / s) and lower operating voltage (1.2V). DDR4 means the second generation of memory. It has experienced DDR1, DDR2 and DDR3 memory. The new generation of DDR4 memory has brought lower power consumption and better performance.
The appearance of DDR4 memory module changes obviously, and the golden finger becomes curved, which means that DDR4 memory is no longer compatible with DDR3. Computers on old platforms cannot upgrade DDR4 memory unless the CPU and motherboard are replaced with new platforms.
USB 3.1/3.2
USB is one of the most widely used interfaces in computers today. USB interface devices cover many fields, such as keyboard and mouse, mobile phone charging concept, mobile storage, and even fan lighting. USB 3.0 is a USB specification, which has been updated to USB 3.1 Gen 2 by USB if. Compared with 3.0, usb3.1 Gen2 has twice its transmission speed. Theoretically, it has a transmission rate of up to 10Gbps, and the coding efficiency also reaches 1GB / s.
USB type-C is one of the transmission standards vigorously promoted and popularized in recent years. The most obvious change in its hardware socket is that it no longer distinguishes between front and back, and can be plugged in and out arbitrarily. Moreover, compared with the previous USB2.0 / 3.0 hardware socket, its volume accounts for one third of the size of the previous generation socket. The data transmission speed can also reach a higher speed - up to 10Gbps; In terms of power support, it has also reached the peak level, and can support 100W at most. It is no longer a one-way transmission like the previous generations of USB interfaces, but can achieve two-way power transmission; At the same time, it can also meet the function of video signal connection while transmitting data and power.
SAS/SATA
Next generation storage technologies such as 12 GB / s SAS and SATA double throughput compared to previous generation technologies, enabling new levels of performance in the storage hierarchy, freeing up the performance of servers and solid-state drives. At the same time, it also adds new challenges, which must be solved in order to ensure the interoperability of the system. Simplify your test setup and perform in-depth error analysis with single vendor automated TX and Rx conformance testing tools for current and next-generation SAS and SATA interfaces.
Yilaichu has a long-term cooperative relationship with key, Tektronix, R & S, viavi, Anritsu and other major electronic test and measurement manufacturers. It can provide the test instruments required in most development stages from design analysis, commissioning to consistency test in terms of high-speed computing interface, data center connectivity and consumer electronic products, so as to bring the products to the market faster.
HSD test solution of Yilai storage high speed serial port
Real time oscilloscope
Keysight
Dsaz634a real time oscilloscope
63GHz
With the development of technology, the data transmission rate reaches 50 Gbps or even hundreds of GB / s, which requires the oscilloscope to have high bandwidth, low noise and fast processing ability. Z series is designed to achieve this goal. The oscilloscope has a real-time bandwidth of up to 63 GHz and excellent background noise and background jitter in the industry.
Key characteristics
63 GHz real-time bandwidth;
The sampling rate of 4 channels is 80 GSA / s and that of 2 channels is 160 GSA / S;
Capture more data using deep memory up to 2 GPTS (100 mpts per channel standard).
Tektronix
Mso73304dx real time oscilloscope
33 GHz
Engineers need to rely on oscilloscopes throughout the design process, from prototype startup to production testing. Mso73304dx oscilloscope combines extraordinary signal acquisition performance and analysis tools. It has unique performance. It can accelerate the measurement work and ensure the completion of signal integrity inspection and timing analysis. There is no need to worry that the noise and jitter inside the oscilloscope will affect the test.
Key characteristics
Analog broadband up to 33 GHz, rise time up to 9 PS, supporting the test of the latest high-speed serial standard;
The 33 GHz model has 2 channels to provide real 33 GHz real-time analog bandwidth;
Industry leading high sampling rate and timing resolution;
Four channel simultaneous use performance, up to 23 GHz bandwidth, 50 GS / s real-time sampling rate and 500 m sample point recording length;
The fastest waveform capture rate, with a maximum of > 300000 WFMS / s for each channel.
Sampling oscilloscope
Keysight
86100d Infiniium dca-x broadband oscilloscope
90GHz
86100d dca-x oscilloscope combines high analog functional bandwidth, low jitter and low noise performance to accurately characterize optical and electrical design from 50 MB / s to more than 80 GB / s. Mainframes provide basic insight and measurement capabilities for powerful foundations, such as de embedding cables and fixtures, which can improve profits and allow engineers to see the real performance of their designs.
Key characteristics
90 GHz bandwidth;
Customize the host for optical, electrical and TDR / S parameter analysis;
100 fs RMS ultra low jitter and as low as 250 μ V ensure fast, and consistent jitter measurement;
Obtain more than 50 built-in standard templates and automatic template margin analysis;
Easily measure multiple signals at the same time; Up to 16 signals are analyzed and collected at the same time.
Tektronix
Dsa8300 digital sampling oscilloscope
70GHz
Dsa8300 series provides background jitter less than 100 fs, which can realize abnormally accurate device verification, and fully supports optical communication standards, time domain reflectometer and S parameters. Dsa8300 digital sampling oscilloscope provides a complete high-speed physical layer test platform for data communication of 155Mb / S - 400g pam4.
Key characteristics
Ultra low system jitter (> 70GHzï¼›
Achieve low system noise in the industry on all bandwidths: maximum 600 µ V (typical 450 µ V) @ 60 GHz, maximum 380 µ V (typical 280 µ V) @ 30 GHz;
Up to 6 channels in a single host simultaneously collect The optical module supports the optical consistency test of all standard speeds from 155 Mb / s to 100 GB / S (4x25) Ethernet;
Excellent acquisition throughput, sampling rate up to 300 KS / s.
bert
Keysight
M8040a bit error meter
64 GBaud
M8040a is a highly integrated bit error rate tester (BERT), which can be used for physical layer characterization and consistency testing. It can test pam-4 and NRZ devices up to 64 gbaud. Verification engineers and R & D engineers need to characterize the interconnected physical layer receivers of the next generation data center. They will benefit a lot from simplified test connections and repeatable and accurate results.
Key characteristics:
Data rates up to 2 to 32 and 64 gbaud for code generator and analyzer;
Pam-4 and NRZ can be selected through the user interface;
Built in 3 tap de emphasis function;
Integrated and calibrated jitter injection: RJ, pj1, pj2, SJ, buj and parity jitter;
Each module has two code generator channels, which can simulate the interference source channel;
Short connection with the device under test, and the front end of the remote probe is used for the code generator;
Real time pam-4 bit error detection to achieve low bit error rate.
Anritsu
Mp1900a signal quality analyzer
Anli's signal quality analyzer-r mp1900a series is a high-performance Bert with 8 module slots. It supports faster equipment for signal integrity analysis by expanding measurement applications including 32 Gbit / s multi-channel PPG / ed, 32g / 64g pam4 PPG, 32g pam4 ed and jitter / noise generator. In addition to the physical layer measurement function for broadband network interface, the integrated mp1900a also supports the measurement of PCI Express bus and other interfaces.
network analyzer
Keysight
N5247B
10MHZ-67 GHz
Key characteristics:
It can replace all kinds of rack and stack equipment and significantly simplify the assets of the test station;
Comprehensive and flexible single connection microwave test engine can improve production efficiency;
The widely used single connection measurement application software can shorten the test time;
Use advanced error correction function to accurately test the characteristics of linear and nonlinear devices;
Multi touch screen and intuitive user interface accelerate the analysis of component characteristics.
Rohde & Schwarz
Zva67 vector network analyzer
9kHz-8.5GHz
R & s Zva series products belong to high-end vector network analyzer, which can support up to 4 signal sources, and can accurately measure signals up to 110ghz. This series of products is ideal for high-performance, multi-functional active or five element components and modules. The frequency range of its high-frequency products can be extended to 500ghz at most.
Key characteristics:
With 4 internal signal sources, the frequency is up to 67ghz, which can quickly measure the amplifier and mixer;
It has the function of 4 phase coherent signal generators;
The IF bandwidth can be up to 30MHz, which can realize the pulse measurement function of amplifier and mixer;
The phase and group delay of the frequency conversion loss of the mixer with or without Lo access can be measured;
A new method for the definition of noise figure without noise source is realized.
Arbitrary waveform generator
Keysight
M8195a arbitrary waveform generator
The m8195a provides up to four output channels simultaneously on a single slot axie module. The sampling rate of each channel is up to 65 GSA / s, the bandwidth is up to 20 GHz, and the vertical resolution is 8 bits. Each module supports up to 16 GSA waveform storage, which can meet the requirements of AWG sampling rate and storage space when simulating radar signals. M8195a is suitable for broadband RF / microwave applications in aerospace / defense / communication fields, allowing engineers to easily generate high-speed digital or multi-level signal scenarios.
Key characteristics:
When the resolution is 8bit, the sampling rate is 54 GSA / s to 65 GSA / s
Analog bandwidth 20GHz
Spurious free dynamic range (SFDR) up to 80 DBC
Harmonic
