NT4310 Series

Product Overview

The NT4310 series pocket OTDR uses a 3.5-inch colour display with a simple, easy-to-operate interface. It integrates OTDR, stable light source, optical power meter, visual fault locator, RJ45 cable sequence, cable length, RJ45 cable tracker and flashlight. Intelligent power-saving management delivers up to 12 hours of continuous measurement. The series measures length, loss and connection quality of optical fibre and cable, and can still be used when an optical signal is present in the line. It is widely used in engineering construction, link maintenance testing and emergency repair of fibre communication systems.

NT4310F1 can test fibre carrying a 1490/1550 nm signal (power ≤ 0 dBm).

NT4310F2 can test fibre carrying a 1310/1490/1577 nm signal (power ≤ +5 dBm).

NT4310T can test fibre carrying a 1310/1490/1550 nm signal (power ≤ 0 dBm).

Product Features

8 functions integrated in one hand-held unit
One-button automatic test
3 m event dead zone — 3 m patch cords are easy to test
60 km precision test
Automatic analysis of results
Live-fibre test on all models
12 hours measuring time, 20 hours standby
New rubber sleeve, shockproof and drop-proof
USB and portable-battery charging
Software remote upgrade, batch export of data files
Operating temperature −10 °C to +50 °C
Hand-held design with lanyard

Technical Specification

OTDR Models

Model	Type	Wavelength	Dynamic range
NT4310D	G.652 SM	1310/1550 nm	24/22 dB
NT4310F1 (live test)	G.652 SM	1310/1550 nm	24 dB
NT4310F2 (live test)	G.652 SM	1550 nm	22 dB
NT4310T (live test)	G.652 SM	1610 nm	22 dB

OTDR Parameters

Event dead zone	3 m
ATT dead zone	8 m
Test range	500 m / 1 km / 2 km / 4 km / 8 km / 16 km / 32 km / 64 km
Pulse width	3/5/10/20/30/50/80/160/320/500/800 ns, 1/2/3/5/8/10 µs
Ranging accuracy	±(1 m + sample interval + 0.005 % × test distance)
Linearity	≤ 0.2 dB/dB
Sample points	16 k – 128 k
Sample resolution	0.05 m – 8 m
Loss resolution	0.001 dB
Loss threshold	0.20 dB
Range resolution	0.001 m
Refractive index	1.00000 – 2.00000
Reflection accuracy	±3 dB
File format	SOR standard file format
Loss analysis	4-point method / 5-point method
Laser safety class	Class 1M
Connector	FC/UPC (interchangeable SC, ST)

OPM · LS · VFL · RJ45

OPM wave range	800 – 1700 nm
OPM calibration waves	850/980/1300/1310/1490/1550/1625/1650 nm
OPM test range	−70 to +10 dBm (optional) / −50 to +26 dBm (standard)
OPM resolution / uncertainty	0.01 dB · ±5 %
OPM frequency / connector	CW/270/330/1 k/2 kHz · universal FC/SC/ST
LS wavelength	Consistent with OTDR
LS laser type / power	FP-LD · ≥ −5 dBm
LS stability / mode	CW ±0.5 dB/15 min (after 15 min preheating) · CW/270 Hz/330 Hz/1 k/2 kHz
LS laser safety class	Class 1M
VFL wavelength	650 nm ± 20 nm
VFL output power	1 mW
VFL mode / connector	CW/1 Hz/2 Hz · FC/UPC (SC, ST)
VFL laser safety class	Class II
RJ45 cable sequence & length	Test distance ≤ 300 m · digital tracking
RJ45 cable tracking	≤ 300 m · online tracking not supported

General

Display	3.5 inches 320×480 LCD
Power supply	AC/DC adapter 100–240 V, 50/60 Hz · lithium battery 3.7 V 4000 mAh
Battery working	Continuous test > 12 h
Data storage	Internal ≥ 600 records · external TF card
Data interface	Mini USB
Working temperature	−10 °C to +50 °C
Storage temperature	−40 °C to +70 °C
Relative humidity	0 – 95 % non-condensing
Weight	≤ 350 g (battery included)
Size	173 × 82 × 37 mm

Standard Configuration

Host (battery included), adapter, data line, CD-ROM (analysis software / user's manual), user's manual, SC/UPC adapter, qualification certificate / service guarantee card, calibration certificate, clean cotton slices, instrument backpack.