YOKOGAWA AQ7290 Series Optical Time Domain Reflectometer OTDR

Fiber end face detection probe (/FST option) can detect stains and scratches on the fiber end face. It supports USB or wireless connection and can determine the size of the fiber core/cladding/contact area (in accordance with IEC 61300-3-35 standard)

3. Advanced Application Features

Provide specialized solutions for complex scenarios, covering requirements such as multi-core fiber optics and long-term monitoring

(1) OTDR Smart Mapper

Function: Take multiple average measurements of the same wavelength using different pulse widths, automatically concatenate waveforms (narrow pulses for resolution at close range and wide pulses for coverage at far range), and generate link event maps.

Advantages: No need to manually switch pulse width, more accurate event localization for complex links (including spectrometers), and beginners can quickly understand the link structure.

(2) Multi Fiber Project

Project management: Package the measurement conditions (wavelength, distance range), number of cores (1-2000 cores), and core sequence (such as numbered 1a-1d) of multi-core optical fibers into a "project", supporting batch measurement and unified data management.

Batch operation: The screen displays the chip numbers in a table, and the measurement status is marked with colors (gray=stored data, green=qualified, red=unqualified) to quickly skip chip numbers that do not need to be measured and avoid omissions.

(3) Fiber optic monitoring (Schedule Measurement,/MNT option)

Timed measurement: Automatically perform OTDR measurement at set intervals (1-60min) and durations (1-120 days) to monitor changes in fiber loss (such as aging and external damage).

Data storage: Measurement data is automatically classified and stored by timestamp (SOR format waveform, CSV format log), supporting post analysis of fault occurrence time.

(4) Auto Loss Test/Multi Fiber Loss Test

Single core testing: Two devices work together, one as a light source and the other as an optical power meter, automatically switching wavelengths (1310/1550nm) to measure fiber loss.

Multi core testing: Synchronize multi-core fiber loss testing through the "master-slave mode", where the master device sends project configurations and the slave device performs measurements. The results are automatically transmitted back to the master device, making it suitable for batch acceptance of multi-core links.

(5) Advanced Analysis

Multi waveform comparison: Load up to 4 waveforms, support vertical offset adjustment, visually compare the loss differences of different time periods/links.

Bidirectional trajectory analysis: Combine waveforms measured from both ends of the fiber to accurately calculate the joint loss of fibers with different backscattering coefficients.

Differential trajectory analysis: Display the difference between two waveforms to quickly locate newly added loss points (such as fiber damage caused by later construction).

Data Management and Report Generation

1. Data storage and loading

Supporting media: Internal memory (approximately 1GB), USB storage device (USB 1.0/1.1/2.0), microSD card (SDC/SDHC/SDXC), up to 2 USB devices can be connected simultaneously.

File format:

SOR: Complies with Telcordia SR-4731 standard, stores waveform data and measurement conditions, and can be used for post analysis or imported into PC simulation software.

SET: Only stores measurement/analysis conditions for rapid reproduction of the same testing environment.

PDF: Generate reports for waveforms, event lists, and measurement conditions, supporting custom inclusion items such as company name and fiber optic identification.

CSV: Stores event data or optical power logs for easy secondary analysis using tools such as Excel.

BMP/JPG: Screenshots used to record on-site inspection results.

Auto Save: After the average measurement is completed, the data can be automatically saved, supporting storage by date or custom path classification to avoid data loss.

2. Report generation

Real time report: After the measurement is completed, the current waveform and event analysis results can be generated into PDF reports, including link maps, event lists, measurement conditions, and other information.

Batch report: Select multiple SOR files to automatically generate multi page PDF reports, support sorting by file name/date/ID, suitable for batch project acceptance.

Custom settings: tags such as company name, fiber ID, and tester can be added, and the report format supports comparing 1 waveform per page or 2 waveforms per page.

System settings and remote control

1. Basic system settings

Display settings: Supports screen themes (dark/light), brightness adjustment (4 levels, including OFF), wavelength/distance units (km/m), and decimal places (1-3).

Power management: In battery mode, automatic sleep mode can be set (1/5/10/30min no operation), LCD backlight can be turned off to extend battery life; The USB-AC adapter can maintain high brightness when powered.

Language and Shortcut Keys: Supports multiple languages (based on device suffix code), and can assign commonly used functions (such as saving and report generation) to the UTIL key for one click calling.