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Ness 640C Digital Cable Tester and Multimeter

Multi-function cable tester

SKU: 104-051C

Overview
SPECIFICATIONS

NESS 640C multi-function cable tester and Digital Multimeter is a practical tool for installation and maintenance of technical personnel in security monitoring, communication wires, integrated wiring and other low voltage systems.

Comprehensive cable testing

It supports virtually all of the cable types encountered by security and CCTV installers:

RJ45 Ethernet
RJ11 telephone
BNC coaxial CCTV
General low-voltage metallic cables

Advanced network cable diagnostics

Unlike simple continuity testers, the tester provides:

Wire map
Opens and shorts
Cable length measurement
Pair status
Impedance
Signal attenuation
Skew measurement
Reflectivity (TDR)

These functions help identify exactly where a cable fault exists instead of simply indicating that a cable is faulty.

Time Domain Reflectometer (TDR)

Measures cable length without disconnecting the far end
Pinpoints cable breaks
Finds crushed cables
Locates shorts
Works on network, telephone, BNC and other low-voltage cables

Cable tracing

The supplied transmitter and receiver allow installers to:

Trace unknown cables in bundles
Identify the correct cable quickly
Reduce time spent searching through cabinets and ceiling spaces

PoE testing

Useful for IP camera installers, it can identify:

IEEE 802.3af
IEEE 802.3at
IEEE 802.3bt
Non-standard PoE

It also displays:

Supply voltage
Which pins carry power
Polarity

Network troubleshooting tools

Beyond cable testing, it includes network utilities such as:

IP scanner
Ping
Port flashing
LLDP/CDP detection
PPPoE dial-up
FTP server

These features make it useful for commissioning IP CCTV systems and diagnosing network issues.

Fibre optic support

Includes:

Optical Power Meter
Visual Fault Locator (red laser)

This allows installers to test fibre links without carrying separate equipment.

Built-in digital multimeter

It also functions as a DMM, providing:

AC voltage
DC voltage
Resistance
Continuity
Diode testing
Capacitance

Large touchscreen

The tester features a:

4-inch IPS touchscreen
800 × 480 resolution

Rechargeable transmitter and receiver

Both units contain rechargeable lithium batteries:

Main tester: approximately 6 hours
Receiver: approximately 12 hours

Part number	104-051C
Screen & Display	4 inch IPS touch screen, 800*480 resolution
Transmit Signal	Digital signal (decisively rejects noise and false signals)
Cable Types	Supports RJ45 twisted pair, RJ11 telephone cable, BNC video cable, and low-voltage metal cables
UTP Cable Test	Tests any two or more wires in a network cable. The screen displays the connection sequence, 1000/100M, and cable number. The receiver is identified through indicators
Continuity Test	Emitter: Minimum recognition length of 10cm
Continuity Test	Receiver: Minimum recognition length of 1m
Short Circuit Detection	Supports network cable short circuit detection
Length Measurement	Measure opens of network cables ,max measurement length up to 3000 meters. Accuracy: Cable length x 3% ± 1m
RJ45 cable TDR test	Test cable’s pair status, length, attenuation reflectivity, impedance, skew, and other parameters. Maximum measurable length up to 180 meters
Port Flashing	Quickly locates ports connected to Ethernet switches and other devices.
PoE Detector	Supports IEEE802.3BT/AT/AF and non-standard protocol detection. Displays power supply voltage, power supply pins, and pin polarity.
Network tool	IP discovery, IP address scan, PING test, LLDP/CDP detection, Port flashing, PPPOE dial-up, FTP server, etc.
Optical Power Meter	Wavelength (nm): 850/980/1270/1300/1310/1490/1550/1577/1625/1650nm
Optical Power Meter	Power range (dBm): -70 to +6 dBm
Visual fault locator	Emits visible red laser to detect fiber optic line breaks, cracks, bends, and other faults.
Multi-meter	DC and AC voltage measurement, Resistance measurement, Continuity test, Diode measurements, Capacitance measurement
Emitter battery Power	3.7V 4000mAh lithium-ion rechargeable battery
Emitter battery Power	(working time about 6 hours)
Receiver battery Power	3.7V 2000mAh lithium-ion rechargeable battery
Receiver battery Power	(working time about 12 hours)
Operating Temperature	-10℃---+50℃
Operating Humidity	30%-90%
Emitter Dimensions	154mm x 86mm x 40mm / 0.3Kg
Receiver Dimensions	218mm x 48mm x 32mm / 0.15Kg

Comprehensive cable testing