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3C04 - Anritsu MW9076D SM Fiber Optic OTDR

Anritsu MW9076 mini-OTDR
Anritsu MU250000A MainFrame With MW9076D SingleMode Fiber Module With Chromatic Dispersion

Simple Measurement of Chromatic Dispersion From One End of Optical Fiber

Source Wavelengths:
- 1310nm
- 1410nm
- 1550nm
- 1625nm

Dynamic Range:
1310/1410/1550/1625 nm : 34.5/33.5/32.5/30.0 dB

Includes Hard Carrying Case & Accessories As Listed

BC# 3552A 3552B

Condition Refurbished / Calibrated
Warranty 90 Day Exchange
  • Anritsu MU250000A OTDR Mainframe (BC# 3552A) 
  • Anritsu MW9076D Module (BC# 3552B) 
    • Singlemode
      • 1310nm
      • 1410nm
      • 1550nm
      • 1625nm
    • Chromatic Dispersion
    • Interchangeable FC Connector
  • (2) SM FC-FC Fiber Cables
  • Strap For Unit
  • (4) Fiber Optic Wipes
  • AC Adapter/Charger
  • Power Cord
  • RS232 PC Interface Cable
  • Hard Copy User Manual
  • Hard Carrying Case

The Anritsu MW9076 series is a small and lightweight optical time domain reflectometer (mini-OTDR) for measuring loss and locating faults in optical fiber cables at fiber installation and maintenance. It has excellent basic performance specifications including a dynamic range of 45 dB and a world-beating backscatter dead zone of just 8 m. For the best price performance, the series includes four types of main frame, two types of optical channel selector unit and two types of display unit.



  • 8 m short dead zone
  • Simple measurement of chromatic dispersion from one end of optical fiber
  • Measurement in 10 s (Full-Auto mode), 0.15 s real-time sweep
  • 5 cm high resolution, 50,000 sampling points
  • 8.4 inch TFT-LCD color display


Optical fiber SM
Wavelength 1.31/1.41/1.55/1.625 µm ± 3 nm
Dynamic range 34.5/33.5/32.5/30.0 dB
Dead zone (Fresnel/back-scattered) 3/25 m
Chromatic dispersion v
Visible LD v
Features • Chromatic dispersion measurement
• Four wavelengths
• Wavelength accuracy: ±3 nm


Performance and Functions

  • High dynamic range
    When using a wavelength of 1.55 µm, a point about 190 km distant can be measured.
  • Short dead zone
    Clearly measure up to near end by 8 m dead zone (back-scatter, SM unit)
  • Chromatic dispersion measurement
    The MW9076D has a built-in function for measuring chromatic dispersion even outdoors. The chromatic dispersion can be measured automatically over a wide range from 1300 to 1660 nm from one end of the fiber. The dispersion reproducibility is ±0.05 ps/(nm · km)* and the dynamic range is 30 dB. The MW9076D can be operated from an external PC using remote commands to measure the chromatic dispersion. For detail of the chromatic dispersion measurement, refer to the document of “product introduction MW9076 series Optical Time Domain Reflectometer”.
    *: Measured with 25 km of 1.3 µm zero-dispersion fiber (ITU-T G.652) at 1550 nm.
  • Fresnel reflection
    The far-end Fresnel reflection can be measured for four wavelengths (1310/1450/1550/1625 nm).
  • Group delay characteristics
    The fitting formula supports cubic or quintic Sellmeier, and polynomials can be applied to various types of fibers.
  • Chromatic dispersion characteristics
    The zero and total dispersion can be displayed along with the delay, dispersion and dispersion slope at 0.1 nm steps.
  • High-speed measurement
    It takes only 10 seconds to measure and display the waveform and connection loss on one screen. Just one press of the Start key is all that is needed to make measurement.
  • Full automatic mode
    Measurement results are displayed by simply pressing the Start key. All complicated settings of distance range, pulse width, attenuator, and maker can be automatically executed. Measurement speed in this mode was significantly increased. When the wavelengths are set to ALL, wavelengths are automatically changed.
  • Repeated measurement
    A series of operations, such as measurement, wavelength switching, data saving, optical channel switching, and next optical fiber measurement, can be executed automatically under preset measurement conditions. This mode is ideal for measuring a multi-core optical fiber.
  • Waveform comparison function
    Measured and saved data can be compared on the same screen. In addition, differences can be displayed as a waveform for simple observation of distance and level differences. This is useful for checking aging changes or comparing several fibers.
  • Warning level setup function
    In automatic measurement mode, an event warning value can also be set in addition to a detection threshold value. For example, the threshold value can be set to the acceptance level, and warning value to a pass/rejection decision level. In this case, all events will be detected, and those exceeding the warning value are displayed in another color, therefore, enabling the operator to easily identify possible “borderline” events.
  • Communication light check function
    When measuring a fiber in service, there is a possibility of mis-measurement by an OTDR. To guard against the risk of mis-measurement, this check function checks for the presence of light other than the OTDR optical measurement pulse.
  • Visible LD
    A 635 nm visible LD option is available for the detection of breaks and loss points along the fiber to be measured.
  • VGA output terminal
    The VGA connector outputs the screen interface to a CRT monitor, which is very useful for production-line applications.
  • Large internal memory
    About 18 MB internal memory is provided as standard. The following table shows the number of waveforms which can be saved in each media.


Wavelength 1310/1410/1550/1625 nm ±3 nm
Measurable optical fiber 10/125 µm singlemode optical fiber (ITU-T G.652)
Optical connector FC, SC, DIN, HMS- 10/A, ST (replaceable, PC type)
Distance range 1, 2.5, 5, 10, 25, 50, 100, 200, 250, 400 km
Pulse width 10, 20, 50, 100, 500, 1000, 2000, 4000, 10000, 20000 ns
Dynamic range 34.5 dB (1.31 µm)
33.5 dB (1.41 µm)
32.5 dB (1.55 µm)
30.0 dB (1.625 µm)
Dead zone(back-scattered light) =25 m
Dead zone (Fresnel reflection) =3 m
Marker resolution 0.05 to 800 m
Sampling resolution 0.05 to 80 m
Sampling points

Quick mode: 5001, 6251
Normal mode: 20001, 25001
High mode: 40001, 50001

Y-axis scale 0.25, 0.5, 1, 2.5, 5, 10, 15 dB/div (15 dB/div is indicated only at Auto and Full Auto measurement.)
IOR settings 1.400000 to 1.699999 (0.000001 steps)
Distance measurement accuracy 0.1 m ±3 x measurement distance x 10–5 ±marker resolution (excluding uncertainty caused by fiber IOR)
Loss measurement accuracy ±0.05 dB/dB or ±0.1 dB (whichever is greater)
Return loss measurement accuracy ±2 dB
Automatic measurement Measurement items:
Total loss, total return loss. Each event distance, connection loss, return loss, or reflection amount (displays in table format)
Threshold values
Connection loss: 0.01 to 9.99 dB (in 0.01 dB steps), Return loss: 20 to 60 dB (in 0.1 dB steps),
Fiber-end: 1 to 99 dB (in 1 dB steps)
Warning values
Splice connection loss: 0.1 to 10 dB (in 0.01 dB steps), Connector connection loss: 0.1 to 10 dB (in 0.01 dB steps),
Return loss: 10 to 50 dB (in 0.1 dB steps), Fiber loss: 0.01 to 10 dB (in 0.01 dB steps),
Total loss: 0.1 to 60 dB (in 0.1 dB steps), Total return loss: 10 to 50 dB (in 0.1 dB steps),
Average loss: 0.01 to 10 dB (in 0.01 dB steps)
Number of detected events: Up to 99
Automatic setting: Distance range, pulse width, averaging count (time)
Measurement time: =60 s (in full automatic measurement mode)
Connection check: Automatic check of front panel connector connection quality
Communication light check: Check for presence of communication light in optical fiber to be measured
Manual measurement Measurement items:
Transmission loss and distance between 2 points, loss per unit length between 2 points, connection loss, return
loss/reflection amount, total return loss, average loss
Real-time sweep: 0.1 to 0.2 second or less
Chromatic dispersion measurement Wavelength range: 1300 to 1660 nm, Wavelength accuracy: ±0.5 nm (typical),
Zero-dispersion repeatability: ±0.6 nm (typical),
Dispersion repeatability: ±0.05 ps/(nm·km)
* Typical Dynamic range:
30 dB (4% Fresnel, typical)
Other functions Waveform storage [Bellcore. SOR (GR-196-CORE, SR-4731) or Anritsu. Dat format, user selectable], waveform comparing function, print output (Centronics), repeated measurement function (A series of operations such as wavelength switching, waveform storage, and printing can be executed by pressing a single key.), relative distance set (zero cursor set), calendar clock, distance unit set (km, m, kf, f, mi), title input (up to 32 characters), remaining battery power display
Laser safety specification 21CFR Class 1, IEC 60825-1 Class 1
Power =35 W max. (at charging), 4 W (in standard state, MU250000A power consumption included.)
Battery Continuous operation: 6 h (typical value)
Dimensions and mass 290 (W) × 194 (H) × 77 (D) mm
(MW9076D main frame)
290 (W) × 194 (H) × 122 (D) mm (with MU250000A Display Unit)
=3.1 kg (MW9076D main frame only), =5.7 kg (with MU250000A Display Unit and battery pack included)
Environmental condition Operating temperature and humidity: –10° to 40°C, = 85% (no condensation)
Storage temperature and humidity: –20° to 60°C, = 85%
Vibration: Conforming to MIL-T-28800E Class 3
Shock: 76 cm height, 6 surfaces, 8 corners
Dust-proofing: MIL-T-28800E
Drip-proofing: MIL-T-28800E
EMC EN61326: 1997/A2: 2001 (Class A)
EN61000-3-2: 2000 (Class A)
EN61326: 1997/A2: 2001 (Annex A)
LVD EN61010-1: 2001 (Pollution Degree 2

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