Yokogawa AQ1000 OTDR Optical Time Domain Reflectometer

Yokogawa AQ1000 OTDR Optical Time Domain Reflectometer

Core functions of the device

As an OTDR device, AQ1000 is primarily used to detect fiber optic fault locations, monitor transmission losses, fusion losses, and other parameters. Its main functions are as follows:

1. Optical pulse measurement function

Support two core measurement modes to meet different scenario requirements:

Average Measurement

TRACE mode: After multiple measurements, take the average of the data and display the results in waveform form to improve the signal-to-noise ratio. It can detect weak events that are masked by noise, such as fusion losses and reflections.

MAP mode: After completing the average measurement, the OTDR waveform is automatically analyzed, and various events (such as fusion points and bending points) are marked with icons. If the qualified/unqualified judgment conditions are preset, the judgment results will be displayed in the color of the icon.

Key feature: Supports one-time measurement of dual wavelengths of 1310nm and 1550nm (multi wavelength measurement). During measurement, the average measurement is completed at 1310nm first, and then automatically switches to 1550nm measurement.

Real time measurement

Only supports TRACE mode, with real-time waveform updates and displays during the measurement process. It can monitor events such as fusion loss and return loss in real time, as well as observe waveform changes when parameters such as wavelength, distance range, and pulse width change.

Limitation: Cannot be performed in MAP mode, it will automatically switch to TRACE mode after starting real-time measurement.

2. Data display and analysis function

The data shows

TRACE mode: The horizontal axis represents distance and the vertical axis represents loss level, displaying the waveform of optical pulse measurement. The waveform can be scaled and moved, and detected losses or reflections (referred to as "events") will be marked on the waveform.

MAP mode: Display all events from the measurement starting point to the fiber optic endpoint in order using icons, label the event type (such as fusion, bending, splitter) and distance from the starting point, and visually present the status of the fiber optic line.

data analysis

Waveform analysis: Measure the distance between two points, fusion loss, and return loss (inter marker return loss) through the cursor and markers.

Event analysis: Automatically detect events and display them on the screen (TRACE mode marked on the waveform, MAP mode displayed with icons), support event editing (insert/delete events, insert/delete distance reference point R), adjustable event detection conditions (such as fusion loss threshold, return loss threshold).

3. Pass/Fail Judgment

Judgment logic: Set a threshold for each measurement item. If the measurement value does not exceed the threshold, the event is judged as "Pass", and if it exceeds the threshold, it is judged as "Fail".

Judgment items: including connector loss, fusion loss, return loss, loss per kilometer between events (dB/km), and total loss.

The results show that in TRACE mode, qualified events have no special markings, while unqualified events are marked in red; In MAP mode, different colored icons are used to distinguish between them. The top progress bar is green when all events are qualified, and red when there are unqualified events.

4. Light source and power detection function

Stable Light Source

Transmit measurement light (continuous CW or modulated CHOP) from the OTDR port, with a wavelength consistent with the OTDR light pulse wavelength (1310nm/1550nm), for measuring optical loss or identifying optical fibers.

Visible light source (/VLS option)

Only supported by VLS option devices, emitting 650nm visible light (CW or 2Hz modulated CHOP) from the VLS port for visual inspection of fiber breakpoints and checking the core of multi-core fibers.

Power checker

Detect the presence of communication light (in use fiber) in the measured optical fiber through the OTDR port and check its power value. The supported wavelengths for measurement include 1310nm, 1490nm, 1550nm, 1625nm, and 1650nm.

5. Data storage and transmission function

File type and purpose

Characteristics of file format usage

. SOR stores the measurement results of optical pulses (including measurement/analysis conditions, waveform data, and event list data), which can display waveforms and event analysis results after loading. It only supports SOR files generated by AQ1000 devices

PDF stores the waveform data of the current screen or saved files in a report format. The report can be customized to include items such as job information, link summaries, and waveform diagrams

CFG storage system settings (devices, connections, etc.) can be used for unified configuration of multiple AQ1000 devices

. BMP/. JPG storage device screen images are only for viewing on a computer and cannot be loaded back into AQ1000

SOZ stores multiple waveforms measured simultaneously and only supports loading with AQ1000. When using AQ7933 OTDR simulation software for PC analysis, it needs to be split into SOR files

storage medium