M310 Enterprise OTDR
The M310 OTDR is specifically designed to address the technical challenges associated with today’s enterprise network architectures. The M310 integrates AFL's TruEvent™ Technology -- advanced event analysis software to more accurately detect, locate and measure network events - allowing users to confidently determine where losses meet or exceed specification.
The M310 is easy to use (Touch and Test®), comes standard with integrated Source, Power Meter and VFL, and is compatible with DFS1 connector inspection probe. No surprise 'add-on' charges for these commonly needed support functions.
Industry Leading TruEvent™ Technology - Provides a new level of accuracy and reliability in event analysis. This is the best performing OTDR for enterprise and data center applications.
Short dead zones to validate and troubleshoot typical Data Center and Enterprise networks
- Event Dead Zones 0.8m
- Attenuation Dead-zones < 3 m
Built-in Optical Light Source (OLS) - Provide light source for Tier 1 testing convenience
Built-in Optical Power Meter (OPM) - Test and store both Tier 1 and Tier 2 results in one unit
Built-in Visual Fault Locator (VFL) - Quickly identify fiber faults and verify polarity
Front Panel and First Connector checks - Verify launch quality to help users obtain better OTDR trace results
Live Fiber Detection - Detects in-service fibers to protect equipment and prevent testing the wrong fiber
Dynamic Range - The right capability for Enterprise networks
- 38 dB Single-mode
- 30 dB Multimode
Inspection ready - Plug in the DFS1 Digital FiberScope to inspect connectors and ensure there are no dirty or damaged connections in the network
Fast, Real Time OTDR mode - Use in troubleshooting or splicing applications
Truly hand-held - Compact, rugged product packaging is designed for outside use and cramped inside plant environments.
Easy to read results - M310 OTDR reports both the traditional OTDR trace and an event table clearly showing pass/fail results on one screen. This easy to interpret table allows less skilled technicians to effectively use the OTDR.
International Language Support - User interface available in English, Chinese, French, German, Italian, Polish, Portuguese, Spanish and Turkish
M310 Touch and Test® supports users of all levels
Full Auto Mode – Connect and press test. M310 will detect fiber and set recommended test parameters. Perfect for novice technicians or repair techs quickly looking for faults on fiber spans of unknown length.
Auto-Once Mode – Designed for testing cables with multiple fibers. M310 performs a full auto test on the first fiber and retains recommended settings allowing fast testing of subsequent fibers.
Expert Mode – Provides access to testing parameters for experienced users to setup optimal testing scenarios for specific networks.
Real-Time Mode – Continuous OTDR operation and display update, allows users to dynamically change networks while monitoring OTDR trace results. Example: relaxing fiber bends to reduce attenuation loss.
Data Storage and Reporting Capabilities (TRM™)
Thousands of test results may be stored internally or on the supplied USB drive. Test results are transferable, via USB cable or USB drive, to a computer for viewing, printing, and analyzing with the supplied Windows® compatible software - TRM™ 2.0 Basic Analysis and Documentation Software (Test Results Manager). Acceptance reports generated using TRM 2.0 can include OTDR traces with summary and event information with or without pass/fail indication, event maps, loss/power measurement tables and end-face images.
Advanced Analysis Software
The Advanced Analysis software option integrates macro/microbend detection and bi-directional trace analysis into the M310, and includes TRM 2.0 Advanced Analysis PC software.
- Macro/Microbend detection - The detection helps technicians identify installation problems. Excessive bends or stress on fibers will show up as increased attenuation at higher wavelengths. These bends or stresses are indicated on the Event Table with a special icon.
- Bi-directional trace analysis - The analysis is used to resolve errors due to things like mis-matched fibers, takes the measurement of the loss in both directions, then calculates a two-way average of the OTDR's data, which is the true loss of the event.
Download the Spec Sheet
Class I FDA 21 CFR 1040.10 and 1040.11; IEC 60825-1:2007-03
Launch Condition n
Controlled Launch at 850 nm n
Live Fiber Detection m
Dynamic Range (SNR = 1) b
Event Dead Zone c
Attenuation Dead Zone d
5, 10, 30, 100, 300 ns, 1 μs,
5, 10, 30, 100, 300 ns, 1, 3, 10 μs, 20 μs
250 m to 30 km
250 m to 240 km
Up to 120,000
Minimum Data Point Spacing e
Group Index of Refraction (GIR)
1.4000 to 1.6000
Distance Uncertainty/Accuracy f
±(1 +0.005 % x distance + data point spacing)
Reflectance Range p, h
850 nm: -14 to -58 dB (typical)
1300 nm: -14 to -63 dB (typical)
1310 nm -14 to -65 dB (typical)
1550 nm -14 to -65 dB (typical)
Reflectance Accuracy h
Real Time Refresh Rate j
m, km, ft, kft, mi
Full Auto, Expert, Real-Time
Trace File Format
Bellcore GR-196 Version 1.1, Telcordia SR -4731 Issue 2
Trace File Storage Medium
Internal and USB
Trace File Storage Capacity
>1000 internal, 1000s on USB
Trace File Transfer to PC
OLS (Standard) a
Laser, Class 1 (FDA 21 CFR 1040.10 and 1040.11,
and IEC 60825-1:2007-03)
Center Wavelengths (nm)
SM – 1310/1550 ±20/30 nm;
MM – 850/1300 ±20/30 nm
Spectral Width (FWHM)
5 nm max
270 Hz, 330 Hz, 1 KHz, 2 KHz, CW
Wavelength ID (Single/dual)
Output Power Stability q
SM < ±0.1 dB, MM < ±0.2 dB
Output Power (CW) c
-3 dBm ±1.5 dB
OPM (Standard) a
850, 1300, 1310, 1490, 1550, 1625, 1650 nm (displays up to 3 simultaneously)
InGaAs 2 mm
Display Range s
+6 to -70 dBm
Accuracy @ -10 dBm
dB, dBm, mW
Wavelength ID t
Tone Detection u
270 Hz, 330 Hz, 1 kHz, 2 kHz
VFL (Standard) a
Class II FDA 21 CFR 1040.10 and 1040.11; IEC 825-1:1993, 60825-1:2007-03
635 nm ±20 nm
Output Power v
0 dBm (1 mW)
3.5-inch transflective color, high contrast, high reflectivity (20%) for optimum indoor/outdoor viewing with touchscreen
QVGA 240 x 320
Size (in boot)
23 x 11 x 7 cm (8.8 x 4.3 x 2.8 in)
<1.0 kg (< 2.0 lb)
Removable Li-ion or AC/DC power adapter (input 100-240 V, ~1.5 A 47-63 Hz) output 18 V DC/3.6 A (can test while charging, can operate on AC with battery removed)
Battery Life w
Recharge Time x
Auto Shut Off
USB host/full speed 1.1
-18°C to +50°C
-30°C to +60°C
0 to 95 % RH (non-condensing)
DFS1 Digital Fiberscope Support a
Field of View
400 x 300 μm
a. All specifications valid at 23°C ±2°C (73.4°F ±3.6°F) unless otherwise specified.
b. Longest Range and Pulse Width, 3 minutes Averaging Time, normal resolution.
c. Typical distance between the two points 1.5 dB down each side of a reflective spike caused by a -40 dB (multimode).
or -45 dB (single-mode) event using 10 ns pulse width.
d. Typical distance from event location to point where trace is within 0.5 dB of backscatter.
e. Range <8 km.
f. Does not include GIR uncertainty. Is based on the trace and user positioned cursors.
h. For a non-saturated event.
j. 2 km Range, 100 ns.
m. Signals greater than -20 dBm MMF and -30 dBm SMF will trigger the Live Fiber Indication warning.
n. Comparable to Encircled Flux loss measurement on OM4 fiber networks.
p. For OM1 fiber typical Backscatter Coefficient @ 850 nm -68 dB, @ 1300 nm -76 dB and attenuation coefficient @850 nm 2.77 dB, @1300 nm 0.52 dB. For OS1-OS2 fiber typical Backscatter Coefficient @ 1310 nm -79.6 dB, @1550 nm -82 dB and attenuation coefficient @1300 nm 0.31 dB, @1550 nm 0.18 dB.
q. Over 1 hour after 15 minute warmup of unit.
r. Single-mode: SMF-2 fiber; Multimode: 50 um fiber
s. Measurement Range: +3 to -65 dBm for 1300 to 1625 nm, and +3 to -60 dBm for 850 nm.
t. Wavelength ID Range: +3 to -50 dBm for 1300 to 1625 nm, and +3 to -40 dBm for 850 nm.
u. Tone Detect Range: +3 to -50 dBm 1300 to 1625 nm, and +3 to -40 dBm for 850 nm.
v. Typical output power.
w. Typical with new battery, per GR-196-Core Issue 2.
x. Typical, from fully discharged to fully charged state, unit may be operating.