មាតិកា លាក់
1 UNI-T UT-GBE-FT វ៉ុលtagអ៊ីម៉ែត្រ
2 លក្ខណៈបច្ចេកទេសផលិតផល
3 ការណែនាំអំពីការប្រើប្រាស់ផលិតផល
4 Ethernet Compliance Test
5 Fixture Application
6 ការ​ធ្វើ​តេ​ស្ត Jitter
7 ឧបសម្ព័ន្ធ
8 ការធានា
9 សំណួរដែលសួរញឹកញាប់
10 ឯកសារ/ធនធាន
10.1 ឯកសារយោង

UNI-T-និមិត្តសញ្ញា

UNI-T UT-GBE-FT វ៉ុលtagអ៊ីម៉ែត្រ

UNI-T-UT-GBE-FT-Voltagអ៊ីម៉ែត្រ - ផលិតផល

លក្ខណៈបច្ចេកទេសផលិតផល

  • ឈ្មោះផលិតផល៖ UT-GBE-FT100/1000M Ethernet Compliance Test Fixture
  • កំណែសៀវភៅណែនាំអ្នកប្រើប្រាស់៖ វី៣៥
  • កាលបរិច្ឆេទចេញផ្សាយ៖ ខែមិថុនា ឆ្នាំ 2025
  • សេណារីយ៉ូនៃកម្មវិធី៖ 100Base-Tx Compliance Testing, 1000Base-Tx Compliance Testing

ការណែនាំអំពីការប្រើប្រាស់ផលិតផល

ឯកសារលើសview
ឯកសារនេះផ្តល់នូវការបញ្ចប់view of the layout and application scenarios of test fixtures used in Ethernet compliance testing.

ឧបករណ៍ភ្ជាប់

  • Ethernet Test Main Fixture
  • Return Loss Calibration Fixture

សេណារីយ៉ូកម្មវិធី

  • 100Base-Tx Compliance Testing
  • 1000Base-Tx Compliance Testing

ប្លង់រឹង

UNI-T-UT-GBE-FT-Voltage-Meter-fig-1Each functional area of the fixture is described as follows:

  • Zone ①：SMA Connection Area
    Used for return loss test, equipped with a balun and a calibration board.
  • Zone ②：2.54 mm Pin Area
    Used to connect differential probes for waveform testing.
  • Zone ③: Common-Mode Signal Testing Area
    Before testing, adjust the jumper cap to the desired test channel.
  • Zone ④：100M Testing Area
    Before testing, connect the Device Under Test (DUT) and power the fixture via a USB cable. Begin testing when both D1 and D2 indicators are illuminated.
  • Zone ⑤： On-Board 100M Link Partner Area
    Functions as a built-in link partner for 100M Ethernet testing.
  • Zone ⑥： Disturber Signal Loading Area
    Designed with two sets of power dividers to introduce disturbance signals for noise margin testing.
  • Zone ⑦：Balun Area
    Contains a balun for return loss calibration during test setup.

UNI-T-UT-GBE-FT-Voltage-Meter-fig-2

Return loss calibration area: Used for open-circuit, short-circuit, and load calibrations of a network analyzer during return loss testing.

បញ្ជីគ្រឿងបន្លាស់
This section outlines the components included in the UT-GBE-FT kit along with standard accessories. All listed items can be ordered through UNI-T or its authorized distributors.

គ្រឿងបន្លាស់ បរិមាណ Standard/Option
Main test fixture ×1 ស្តង់ដារ
Calibration test fixture ×1 ស្តង់ដារ
15 cm network cable ×1 ស្តង់ដារ
SMA load ×6 ស្តង់ដារ
ខ្សែផ្គត់ផ្គង់ថាមពល USB ×1 ស្តង់ដារ

Ethernet Compliance Test

ធាតុសាកល្បង Test Sub-item ស្តង់ដារយោង
 

 

Peak differential voltagតេស្ត

 UTP +Vout Differential

វ៉ុលtage（Pos）

  

IEEE802.3-2018, Clause 25 ANSI X3.263-1995, Section 9.1.2.2
UTP -Vout Differential

វ៉ុលtage（Neg）
សញ្ញា amplitude symmetry
 

 

Overshoot Test

 Overshoot (Positive pulse

ទទឹង)

 IEEE802.3-2018, Clause 25 ANSI X3.263-1995, Section 9.1.3
Overshoot (Negative pulse

ទទឹង)
AOI Template Test UTP AOI template IEEE 802.3-2018, Clause 25

ANSI X3.263-1995, Appendix J
 

 

 

 

 

 

AOI Rise/Fall Time Test

 AOI +Vout rise time  

 

 

 

IEEE 802.3-2018, Clause 25 ANSI X3.263-1995, Section 9.1.6
AOI +Vout fall time
AOI +Vout rise/fall time

ស៊ីមេទ្រី
AOI -Vout rise time
AOI -Vout fall time
AOI -Vout rise/fall time

ស៊ីមេទ្រី
AOI Overall rise/ fall time

ស៊ីមេទ្រី
 

 

 

DCD/Jitter Test

  

ឧបករណ៍បញ្ជូនញ័រ

 IEEE 802.3-2018, Clause 25 ANSI X3.263-1995, Section

9.1.9
 

Duty cycle distortion

 IEEE 802.3-2018, Clause 25

ANSI X3.263-1995, Section 9.1.8
 

 

ការធ្វើតេស្តការបាត់បង់ត្រឡប់មកវិញ

 Transmitter return loss to be continued
Receiver return loss to be continued
MDI (Media Dependent

Interface return loss

 to be continued

ការរៀបចំតេស្ត
Before testing, please prepare the following equipment：

  • An oscilloscope that supports Ethernet compliance testing
  • ឧបករណ៍ស្ថិតក្រោមការសាកល្បង (DUT)
  • Other test tools: Test fixture, differential probe, SMA cable, USB power cable, Ethernet cable

Oscilloscope Requirements
According to the 1000Base-T specifications outlined in the Ethernet conformance testing standard (IEEE 802.3), the oscilloscope must meet the minimum requirements: bandwidth: ≥ 1GHz; sample rate: ≥ 5GSa/s. UNI-T’s high-bandwidth oscilloscope series, such as the MSO7000X and MSO8000HD, fully satisfy these requirements, offering:

  • Bandwidth range: 1GHz to 8GHz
  • អតិបរមា sample rate: 20GSa/s
  • 12-bit ADC (MSO8000HD series): Delivers high-resolution, high-accuracy measurement results The MSO8000HD series excels in signal integrity, featuring:
  • Low noise floor: <800μV at 50mV/div vertical scale
  • High ENOB: >7bits across the full bandwidth
  • Low intrinsic jitter: 150fs RMS

These characteristics ensure the authenticity and reliability of measurement data during Ethernet conformance testing.

Pre-Test Preparation for Oscilloscope
Before performing any tests, ensure the following operations are performed on the oscilloscope:

  • Allow the oscilloscope to warm up for at least 30 minutes before use.
  • Perform self-calibration if the ambient temperature changes by 5°C or more.
  • Perform Function Check and Probe Calibration procedures.
  • ចំណាំ៖ The test procedures and connections described in this manual use the MSO7000X series oscilloscope as an example. For detailed instructions on self-calibration, function checks, and probe calibration, please refer to the MSO7000X Series Mixed Signal Oscilloscopes Manual and the UT-PD1500 Active Differential Probe-User Manual.

Probe Requirements
A differential probe is required for testing high-speed signals. The probe should have a bandwidth of at least 1GHz. Recommended models: UT-PD1500, UT-PD2500, UT-PD4000 Active Differential Probe.

Fixture Application

ការភ្ជាប់សាកល្បង

UNI-T-UT-GBE-FT-Voltage-Meter-fig-3

100Base-Tx Test Environment Setup

  • ឌីផេរ៉ង់ស្យែល amplitude, symmetry, overshoot, template, rise/fall time, jitter, and duty cycle tests
  • Set up the test environment as shown in Figure 2-1. Use the provided 15 cm network cable to connect the DUT to the J25 interface in Zone ④ of the fixture. Insert the oscilloscope’s differential probe into the two pins of J30, also in Zone ④. Then, connect any USB port on the oscilloscope to the USB Type-B port in Zone ⑤ of the fixture using the supplied USB cable to power the fixture. Note: Ensure correct
  • polarity when connecting the differential probe.
  • Once connected, the D1 (3.3V power) and D2 (100M mode) LEDs in Zone ⑤ should illuminate. The oscilloscope should then display a waveform pattern similar to Figure 2-2. Launch the oscilloscope’s Ethernet compliance test software to begin testing.

UNI-T-UT-GBE-FT-Voltage-Meter-fig-4

Transmitter Return Loss Test

  • Before testing, perform a calibration of the vector network analyzer (VNA). Use an SMA cable to connect Group A signal lines to the balun—specifically, connect DA+ to BAL+ and DA− to BAL−. Then, connect the SE (single-ended) output of the balun to Port 1 of the VNA, as shown in Figure 2-3.
  • During the calibration, follow the on-screen instructions of the VNA. Insert the 15 cm network cable into the Open, Short, and Load interfaces on the calibration fixture one by one.
  • After calibration is complete, remove the calibration board, insert the 15 cm network cable into the DUT, and power on the DUT, then complete the transmitter return loss test using VNA.

UNI-T-UT-GBE-FT-Voltage-Meter-fig-5

Receiver Return Loss Test
Before testing, perform a calibration of the vector network analyzer (VNA). Use an SMA cable to connect Group B signal lines to the balun—specifically, connect DB+ to BAL+ and DB− to BAL−. Then, connect the SE (single-ended) output of the balun to Port 1 of the VNA, as shown in Figure 2-4. During the calibration, follow the on-screen instructions of the VNA. Insert the 15 cm network cable into the Open, Short, and Load interfaces on the calibration fixture one by one.

  • After calibration is complete, remove the calibration board, insert the 15 cm network cable into the DUT, and power on the DUT, then complete the receiver return loss test using the VNA. UNI-T-UT-GBE-FT-Voltage-Meter-fig-6

1000Base-T Test Environment Setup
ទិន្នផលកំពូលtage, differential output templates, and maximum output droop tests There are two test environment setups: without disturbing signal and with disturbing signal.

  • Without disturbing signal
    Set up the test environment as shown in Figure 3-1. Connect the differential probe to the DB port in Zone ②, and connect the DUT to the J6 port.
  • With disturbing signal
    Set up the test environment as shown in Figure 3-2. Connect DIST+ and DIST− to the disturbing source and connect SCOPE+ and SCOPE− to the oscilloscope. Connect the Tx differential signals to the power splitter using SMA cables (DUT+ to DA+, DUT− to DA−). Then connect the DUT to the J7 port.

If calibration of the disturbing signal amplitude is required, refer to Figure 5-2 and 5-3. After completing the setup, power on the DUT to start the test. Ensure that the test mode is configured to Mode 1 for this procedure. UNI-T-UT-GBE-FT-Voltage-Meter-fig-7

Transmitter Distortion Test
Set up the test environment as shown in Figure 3-1 or 3-2. Ensure that the oscilloscope is triggered by the Tx_TCLK signal and that the test mode is set to Mode 4 to match the test requirements.

MDI Common Output Test
Set up the test environment as shown in Figure 3-3. Use the jumper cap to select the channel under test—only one channel group can be selected at a time. Ensure that the test mode is configured to Mode 4 to meet the test requirements. UNI-T-UT-GBE-FT-Voltage-Meter-fig-8'

Transmitter Distortion Test
Set up the test environment as shown in Figure 3-1 or 3-2. Ensure that the oscilloscope is triggered by the Tx_TCLK signal and that the test mode is set to Mode 4 to match the test requirements.

MDI Common Output Test
Set up the test environment as shown in Figure 3-3. Use the jumper cap to select the channel under test—only one channel group can be selected at a time. Ensure that the test mode is configured to Mode 4 to meet the test requirements. UNI-T-UT-GBE-FT-Voltage-Meter-fig-9

ការ​ធ្វើ​តេ​ស្ត Jitter

  • This test fixture supports only Jtxout jitter testing. For the connection setup, refer to Figure 3-1. The oscilloscope must be triggered by the Tx_tclk signal, and the test mode should be set to Mode 2 or 3.
  • Note that the test results are for reference only, as the specification does not define a limit for this parameter.
  • The measurement points for Tx_tclk jitter—whether filtered or unfiltered—in both Master and Slave modes are located on the Tx_tclk signal, not on the fixture itself.
  • Jitter testing in Slave mode requires a specialized jitter test channel (i.e., a 120-meter Cat 5 cable with segmented 100Ω and 120Ω impedance sections), which is not supported by this fixture.

ការធ្វើតេស្តការបាត់បង់ត្រឡប់មកវិញ
The return loss test method is similar to that of 100Base-Tx, but with the following differences

  • All signal groups (A, B, C, D) must be tested.
  • The test mode should be set to Mode 4.
  • The return loss mask (template) is different from that used in the 100Base-Tx test.

Jumper Cap

UNI-T-UT-GBE-FT-Voltage-Meter-fig-10

លេខប៊ីត ឈ្មោះ ការពិពណ៌នា
J22 Jumper Storage Used to store unused jumper caps. This area has

no electrical connections.

UNI-T-UT-GBE-FT-Voltage-Meter-fig-11

លេខប៊ីត ឈ្មោះ ការពិពណ៌នា
J14 A Selects 1000Base-T Channel A
J20 C Selects 1000Base-T Channel C
J21 D Selects 1000Base-T Channel D
J17 B Selects 1000Base-T Channel B
J19 / Onboard 50-ohm load selection jumper cap (not

installed by default)

UNI-T-UT-GBE-FT-Voltage-Meter-fig-12

លេខប៊ីត ឈ្មោះ ការពិពណ៌នា
J26 M0 Reserved, connected to the high level by default
J27 M1 Reserved, connected to the high level by default
J28 M2 Reserved, connected to the low level by default

ឧបសម្ព័ន្ធ

1000Base-T Test Mode
For the 1000Base-T test, different test items require specific test mode configurations. Refer to Figure 5-1, sourced from IEEE Standard 802.3, Section 40.6.1.1.2, for the corresponding test mode requirements.

UNI-T-UT-GBE-FT-Voltage-Meter-fig-23

1000Base-T Test Disturbing Signal Configuration
For testing scenarios involving disturbing signals, refer to Figure 5-2 for the disturbing amplitude and frequency. This figure is extracted from IEEE 802.3 standard, Section 40.6.1.1.3.

  • The peak output voltage test, differential output template test, and maximum droop test use a disturbing signal of 2.8V at 31.25MHz.
  • The transmitter distortion test uses a disturbing signal of 5.4V at 20.833MHz.

UNI-T-UT-GBE-FT-Voltage-Meter-fig-24

1000Base-T Test Disturbing Signal Calibration
If calibration of the disturbing signal amplitude is required, refer to Figure 5-3 for the connection setup. Note that the disturbing signal is differential. When using two single-ended disturbing sources, synchronization between them must be configured according to the instrument manufacturer’s guidelines. UNI-T-UT-GBE-FT-Voltage-Meter-fig-13

Onboard Balun Characteristic UNI-T-UT-GBE-FT-Voltage-Meter-fig-14

Onboard Power Divider Characteristic UNI-T-UT-GBE-FT-Voltage-Meter-fig-15 UNI-T-UT-GBE-FT-Voltage-Meter-fig-16UNI-T-UT-GBE-FT-Voltage-Meter-fig-17

តេស្ត Example

100Base-Tx Ethernet Compliance Test

  • Set up the test environment as shown in Figure 2-1. Use the provided 15 cm network cable to connect the DUT to the J25 interface in Zone ④ of the fixture. Insert the oscilloscope’s differential probe into the two pins of J30, also in Zone ④. Then, connect any USB port on the oscilloscope to the USB Type-B port in Zone ⑤ of the fixture using the supplied USB cable to power the fixture. Note: Ensure correct polarity when connecting the differential probe.
  • Once connected, the D1 (3.3V power) and D2 (100M mode) LEDs in Zone ⑤ should illuminate. The oscilloscope should then display a waveform pattern similar to Figure 2-2. Launch the oscilloscope’s Ethernet compliance test software to begin testing.

UNI-T-UT-GBE-FT-Voltage-Meter-fig-18

Click Test settings to open the configuration window. Select the required test items and configure the settings based on actual testing requirements. Click Start to begin the test after completing the configuration.

UNI-T-UT-GBE-FT-Voltage-Meter-fig-19

Once the test is complete, the system will automatically generate a comprehensive test report based on the configured parameters. The report clearly presents the Pass/Fail results for each test item, along with data tables and test screenshots for intuitive analysis.

UNI-T-UT-GBE-FT-Voltage-Meter-fig-20 UNI-T-UT-GBE-FT-Voltage-Meter-fig-21

ការធានា

ការធានា និងការទទួលខុសត្រូវមានកំណត់
UNI-T guarantees that the Instrument product is free from any defect in material and workmanship within three years from the purchase date. This warranty does not apply to damages caused by accident, negligence, misuse, contamination, or improper handling. If you need a warranty service within the warranty period, please contact your seller directly. UNI-T will not be responsible for any special, indirect, incidental, or consequential damage or loss caused by using this device. For the probes and accessories, the warranty period is one year. Visit instrument.uni-trend.com for full warranty information.

UNI-T-UT-GBE-FT-Voltage-Meter-fig-22

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  • This manual contains information that replaces all earlier published versions. The product information in this document is subject to update without notice. For more information on UNI-T Test & Measure Instrument products, applications, or services, please contact UNI-T Instrument for support. The support center is available on www.uni-trend.com ->instruments.uni-trend.com
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ទីស្នាក់ការកណ្តាល

  • UNI-TREND TECHNOLOGY (CHINA) CO., Ltd.
  • អាស័យដ្ឋាន: No.6, Industrial North Road 1st Road, Songshan Lake Park, Dongguan City, Guangdong Province, China
  • ទូរស័ព្ទ៖ (86-769) 8572 3888

អឺរ៉ុប

  • បច្ចេកវិទ្យា UNI-TREND EU GmbH
  • អាស័យដ្ឋាន៖ Steinerne Furt 62, 86167 Augsburg, Germany
  • ទូរស័ព្ទ៖ +49 (0)821 8879980

អាមេរិកខាងជើង

សំណួរដែលសួរញឹកញាប់

What are the main items included in the UT-GBE-FT kit?

The main items included are the main test fixture, calibration test fixture, 15 cm network cable, SMA load, and USB power supply cable.

What standards are referenced for the Ethernet compliance tests?

The tests reference standards IEEE802.3-2018 and ANSI X3.263-1995.

ឯកសារ/ធនធាន

UNI-T UT-GBE-FT វ៉ុលtagអ៊ីម៉ែត្រ [pdf] សៀវភៅណែនាំអ្នកប្រើប្រាស់
UT-GBE-FT, UT-GBE-FT100, UT-GBE-FT1000M, UT-GBE-FT Voltagអ៊ី ម៉ែត្រ, វ៉ុលtagអ៊ីម៉ែត្រ, ម៉ែត្រ

ឯកសារយោង

ទុកមតិយោបល់

អាសយដ្ឋានអ៊ីមែលរបស់អ្នកនឹងមិនត្រូវបានផ្សព្វផ្សាយទេ។ វាលដែលត្រូវការត្រូវបានសម្គាល់ *