GDS-50 Time Verification System

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GDS-50 Time Verification System

Product ID：CLQTsjpljly042

Price: Please inquire PDF Format

Supply Ability:50 SETS/MON

Port:SHENZHEN

Product Introduction
Other information

Model NumberGDS-50

Brand NameGZZHIHUIYUAN

Payment TermsTT，PAYPAL，Alibaba.com Pay

GDS-50 Time Verification System
Product Overview
The GDS-50 Time Verification System is a multifunctional and comprehensive automatic time verification and testing device designed for the calibration and verification of various time-measuring instruments. It can be used to verify mechanical stopwatches, electronic stopwatches, pointer-type electric stopwatches, digital electric stopwatches, digital millisecond meters and various timers.
The system provides a standard time interval signal to the instrument under test. By measuring this standard time interval signal, the actual measurement value of the tested instrument can be obtained, allowing the measurement error to be calculated and the verification process to be completed.
The GDS-50 fully complies with the Chinese national verification regulation JJG 237-2010 for stopwatches. It integrates four functions: time verification, electronic stopwatch daily rate verification, pointer-type electric time verification and standard time interval generation.
The instrument uses a high-stability quartz crystal oscillator as its time reference and adopts FPGA technology with fully digital control to generate high-precision time interval signals. A 3.5-inch TFT LCD screen and simplified control interface provide convenient operation, while the system offers high stability, high accuracy and strong interference resistance.
The GDS-50 can be used by metrology departments, factories, universities, research institutes and other organizations for the verification and calibration of time-measuring instruments.

Key Features
• Multifunctional time verification system integrating four testing functions
• Complies with the national stopwatch verification regulation JJG 237-2010
• Suitable for mechanical stopwatches, electronic stopwatches and various electric stopwatches
• Supports digital millisecond meters and digital time-measuring instruments
• High-stability quartz crystal oscillator provides the time reference
• FPGA-based fully digital control technology
• High-precision standard time interval signal generation
• 3.5-inch TFT LCD touchscreen display
• Slim and compact design with a simple operating interface
• Common numeric keys are provided on the screen for faster parameter setting
• Single-, dual- and four-channel configurations are available
• Supports simultaneous testing of up to four stopwatches
• Four stopwatch fixtures can operate independently
• Horizontal and vertical testing modes can be independently configured
• Supports single-channel and dual-channel pulse time interval signal output
• Strong anti-interference capability and stable operation
• Can be used as a standard time interval generator
• Optional GDS-5B daily rate verification instrument can be used for electronic stopwatch instantaneous daily rate testing

Working Principle
The GDS-50 generates highly accurate standard time interval signals based on a high-stability quartz crystal oscillator. The signal is applied to the instrument under test through the corresponding physical interface.
The tested stopwatch or time-measuring instrument measures the standard time interval signal and produces its own measured value. The GDS-50 compares the measured value with the standard time interval to determine the measurement error of the tested instrument.
Different signal interfaces and measurement methods are provided for different types of time-measuring instruments, including mechanical stopwatches, electronic stopwatches, pointer-type electric stopwatches, digital electric stopwatches and millisecond meters.
The system also incorporates a standard time interval generator capable of producing single- or dual-channel pulse interval signals for applications requiring a precision time reference.

Applicable Standard
The GDS-50 is designed to comply with:
• JJG 237-2010 — Verification Regulation for Stopwatches
The instrument is suitable for verification and calibration work carried out by metrology departments, laboratories, manufacturers, universities and research institutions.

Technical Specifications

Parameter	Specification
Mechanical & Electronic Stopwatches
Input Time Range	300 ms–9,999,999,999 s
Accuracy	Better than ±(1 × 10⁻⁷ × T0 + 3 ms)
Physical Interface	Banana socket
Pointer-Type Electric Stopwatch
Input Time Range	0.02 s–9,999,999,999 s
Accuracy	Better than ±(Mains Frequency Accuracy × T0 + 0.6 ms)
Physical Interface	Banana socket
Millisecond Meter & Digital Electric Stopwatch
Input Time Range	0.01 μs–9,999,999,999 s
Accuracy	Better than ±(1 × 10⁻⁷ × T0 + 1 μs)
Physical Interface	BNC
Quartz Crystal Oscillator
Frequency	10 MHz
Daily Aging Rate	≤5 × 10⁻⁹/day
Second Stability	≤5 × 10⁻¹¹/s
Accuracy	≤1 × 10⁻⁷
Warm-up Time	5 min
50 Hz Output
Channels	1
Level	TTL
Physical Interface	BNC
10 MHz Output
Channels	1
Level	≥7 dBm
Physical Interface	BNC
Stopwatch Fixture	Up to 4 stopwatches can be tested simultaneously; compatible with various stopwatch shapes
Operating Temperature	0°C to +50°C
Relative Humidity	≤90% RH at 40°C
Storage Temperature	-30°C to +70°C
Power Supply	AC 220 V ±10%, 50 Hz ±5%
Power Consumption	<30 W
Dimensions	482 mm × 300 mm × 140 mm (W × D × H)

Testing Range
The GDS-50 provides different measurement ranges for different types of time-measuring instruments.
Mechanical and Electronic Stopwatches
• Time range: 300 ms–9,999,999,999 s
• Accuracy: Better than ±(1 × 10⁻⁷ × T0 + 3 ms)
• Interface: Banana socket
• Up to four stopwatch fixtures can be used for independent testing
Pointer-Type Electric Stopwatches
• Time range: 0.02 s–9,999,999,999 s
• Accuracy: Better than ±(mains frequency accuracy × T0 + 0.6 ms)
• Interface: Banana socket
• Supports continuous and triggered testing modes
Digital Electric Stopwatches and Millisecond Meters
• Time range: 0.01 μs–9,999,999,999 s
• Accuracy: Better than ±(1 × 10⁻⁷ × T0 + 1 μs)
• Interface: BNC
• Supports positive and negative pulse time interval measurement

Standard Time Interval Generator
The GDS-50 can also be used as a standard time interval generator for applications requiring precision timing signals.
• Supports single- and dual-channel pulse time interval signals
• Provides 50 Hz TTL output
• Provides 10 MHz output with an output level of ≥7 dBm
• Uses a high-stability quartz crystal oscillator as the time reference
• Suitable for providing standard timing signals for measurement and testing equipment

Applications
The GDS-50 Time Verification System is suitable for professional metrology, calibration, manufacturing and research applications.
Typical applications include:
• Stopwatch verification and calibration
• Mechanical stopwatch testing
• Electronic stopwatch testing
• Pointer-type electric stopwatch verification
• Digital electric stopwatch testing
• Digital millisecond meter verification
• Timer performance testing
• Time interval measurement
• Electronic stopwatch daily rate measurement
• Standard time interval signal generation
• Metrology laboratory testing
• Time-measuring instrument quality inspection

Application Scenarios
Metrology Departments
The GDS-50 provides an integrated solution for verification of mechanical, electronic and electric stopwatches as well as digital millisecond meters and other timing instruments.
Factories and Manufacturers
It can be used for incoming inspection, production testing and final quality control of stopwatch and timing instrument products.
Universities and Research Institutes
The system can provide accurate standard time interval signals for research, experimental measurement and calibration applications.
Calibration Laboratories
Its high-stability quartz time base, multiple testing channels and wide measurement range make it suitable for professional calibration laboratories.
Standard Time Signal Generation
The instrument can operate as a standard time interval generator, providing pulse signals for other measurement and testing equipment.

GDS-50 vs. Conventional Stopwatch Verification Equipment

Feature	GDS-50 Time Verification System	Conventional Single-Function Tester
Functions	Multiple time verification functions	Usually single-purpose
Stopwatch Types	Mechanical, electronic, pointer-type electric and digital electric	Limited types
Maximum Simultaneous Testing	Up to 4 stopwatches	Usually fewer
Time Interval Generator	Integrated	May require separate equipment
Daily Rate Verification	Supported with optional GDS-5B	Depends on equipment
Control Method	Fully digital FPGA control	Varies by equipment
Display	3.5-inch TFT LCD	Varies
Signal Output	50 Hz TTL and 10 MHz	Depends on equipment
Application	Metrology, production, laboratory and research	Usually dedicated testing

The GDS-50 combines multiple time verification functions into one system, reducing the need for separate instruments and improving testing flexibility and efficiency.

Optional Accessories
• GDS-5B Electronic Stopwatch Daily Rate Verification Instrument for instantaneous daily rate measurement
• Customized similar products can be manufactured according to customer requirements

FAQ
What is the GDS-50 Time Verification System used for?
The GDS-50 is used to verify and calibrate mechanical stopwatches, electronic stopwatches, pointer-type electric stopwatches, digital electric stopwatches, digital millisecond meters and other time-measuring instruments.
Which standard does the GDS-50 comply with?
The GDS-50 fully complies with JJG 237-2010, the Chinese national verification regulation for stopwatches.
How many stopwatches can be tested simultaneously?
The system can test up to four stopwatches simultaneously. The four fixtures can operate independently.
What is the maximum time measurement range?
Depending on the type of instrument being tested, the time range can extend up to 9,999,999,999 seconds.
Can the GDS-50 test millisecond meters?
Yes. The GDS-50 supports digital millisecond meters and digital electric stopwatches, with a specified time range extending down to the microsecond level.
Can the GDS-50 generate standard time interval signals?
Yes. The GDS-50 can function as a standard time interval generator and generate single- or dual-channel pulse time interval signals.
What type of time reference does the GDS-50 use?
The system uses a high-stability quartz crystal oscillator as its time reference. The oscillator operates at 10 MHz with a daily aging rate of ≤5 × 10⁻⁹/day.
Does the GDS-50 support daily rate measurement?
The GDS-50 integrates electronic stopwatch daily rate verification functions. An optional GDS-5B daily rate verification instrument can also be used for instantaneous daily rate measurement of electronic stopwatches.
What is the power consumption of the GDS-50?
The power consumption is less than 30 W, with an AC 220 V ±10%, 50 Hz ±5% power supply.
Is the GDS-50 suitable for calibration laboratories?
Yes. It is designed for metrology departments, calibration laboratories, factories, universities and research institutes requiring verification of time-measuring instruments.

FAQ
What is the GDS-50 Time Verification System used for?
The GDS-50 is used to verify and calibrate mechanical stopwatches, electronic stopwatches, pointer-type electric stopwatches, digital electric stopwatches, digital millisecond meters and other time-measuring instruments.
Which standard does the GDS-50 comply with?
The GDS-50 fully complies with JJG 237-2010, the Chinese national verification regulation for stopwatches.
How many stopwatches can be tested simultaneously?
The system can test up to four stopwatches simultaneously. The four fixtures can operate independently.
What is the maximum time measurement range?
Depending on the type of instrument being tested, the time range can extend up to 9,999,999,999 seconds.
Can the GDS-50 test millisecond meters?
Yes. The GDS-50 supports digital millisecond meters and digital electric stopwatches, with a specified time range extending down to the microsecond level.
Can the GDS-50 generate standard time interval signals?
Yes. The GDS-50 can function as a standard time interval generator and generate single- or dual-channel pulse time interval signals.
What type of time reference does the GDS-50 use?
The system uses a high-stability quartz crystal oscillator as its time reference. The oscillator operates at 10 MHz with a daily aging rate of ≤5 × 10⁻⁹/day.
Does the GDS-50 support daily rate measurement?
The GDS-50 integrates electronic stopwatch daily rate verification functions. An optional GDS-5B daily rate verification instrument can also be used for instantaneous daily rate measurement of electronic stopwatches.
What is the power consumption of the GDS-50?
The power consumption is less than 30 W, with an AC 220 V ±10%, 50 Hz ±5% power supply.
Is the GDS-50 suitable for calibration laboratories?
Yes. It is designed for metrology departments, calibration laboratories, factories, universities and research institutes requiring verification of time-measuring instruments.