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On Sale! Microtest NEXT SCANNER Token Ring Cable Certifier – AAATesters.com

On Sale! Microtest NEXT SCANNER Token Ring Cable Certifier – AAATesters.com

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Microtest NextScanner Cable Verifiers/Scanners

Microtest NEXT SCANNER Token Ring Network Cable Certifer

Combining hand-held cable certification with an expert system architecture, NEXT SCANNER can run all necessary test automatically, compare actual results to expected results and display the conclusions in plain English

NEXT SCANNER also includes diagnostic features to find cable faults, determine length, generate link test pulse, and then, depending on network type, run additional tests or begin monitoring network activity

Includes Carrying Case & Accessories As Listed

Microtest Next Scanner NextScanner Token Ring Cable Certifier Models On Sale Warranty Calibration Backed by The Best Service and Lowest Prices in the Industry.

Microtest NEXT SCANNER Cable Certifier
NEXT SCANNER – The most advanced member of the Microtest Scanner family – automates network cable certification and troubleshooting. Combining hand-held cable certification with an expert system architecture, NEXT SCANNER can run all necessary test automatically, compare actual results to expected results and display the conclusions in plain English.

Microtest NextScanner

One of NEXT SCANNER’s most useful and powerful features is the ability to certify cable for all local area network (LAN) topologies. This means if you need to install a network in a building with existing cabling, you can verify the cables’ ability to transmit data reliably and (with twisted-pair cable) even find the best pairs for high quality data transmission. In another example, you may need to decide whether your cabling can support 4 or 16 Mbps token ring. NEXT SCANNER will tell you this.

The Autotest function makes cable certification as simple as pressing a button. NEXT SCANNER automatically runs all appropriate tests for that network type then compares the results to a table of expected results for that network. All deviations from expected values are reported. You can then print a cable certification record of the test results.

NEXT SCANNER also includes diagnostic features to find cable faults, determine length, generate link test pulse, and then, depending on network type, run additional tests or begin monitoring network activity.

In addition to the powerful, easy-to-use Autotest function that runs a specified series of tests based on your network type, some of the special features of
NEXT SCANNER include:
– Near end crosstalk (NEXT) measurement
– Link test pulse active hub activation and network monitoring
– Attenuation (signal loss) measurements for 10BASE-T and token ring networks
– Ability to test all four pairs in a normal twisted-pair cable
– Ability to find and rank the best pairs for local area network communication in any four-pair cable
– Flash memory for quick field software upgrades and option installation

Networks and Twisted-Pair Cables
The fastest growing trend in networking today is the use of unshielded twisted-pair (UTP) cabling instead of coax. Twisted-pair cabling has two wires wrapped (or twisted) around each other; hence the name. These wires are twisted between two and 12 times per foot of length. Most twisted-pair cabling contains either four or 25 pairs of wires.

Several reasons account for the popularity of twisted-pair cabling. Twisted-pair cable is less expensive, easier to install and is already installed in many buildings.

NextScanner

In addition, cabling standards already exist, and others will be established soon. The Institute of Electrical and Electronic Engineers (IEEE) has issued a standard for twisted-pair Ethernet cabling, called 10BASE-T, increasing it’s popularity on Ethernet networks. ARCNET also has a generally accepted twisted-pair cable standard; the EIA 568-wire standard. IEEE is establishing a new standard for token ring using unshielded twisted-pair cable, under 802.5. NEXT SCANNER can verify compliance with present and future standards as they evolve.

Even though vonenient and less expensive, twisted-pair cabling does have its own set of problems. The unshielded variety is more susceptible to interference than coax, shorter cable runs may be necessary, and, depending on the individual cable, it may not support the higher data rates now coming into use (for example, 16 Mbps token ring).

Specifications:

Distance
Coax Range 20 to 4,000 ft.;
Accuracy +/- 4%;
Resolution 2 ft.
(measurement capability to 8,000 ft. in good quality coax)
Twisted-pair Range 20 to 2,000 ft.; accuracy +/- 4%;
Resolution 2 ft.
Nominal velocity of propagation (NVP) is programmed for common cable types. For non-standard cable, user can calibrate NEXT SCANNER for NVP using a known length of cable.
Signal Attenuation
Determines worst case attenuation on four pairs, as single ended or round trip on any pair, over user-programmable range, including: 256 kHz, 512 kHz, 768 kHz, 1 MHz, 2 MHz, 4 MHz, 5 MHz, 8 MHz, 10 MHz, 16 MHz, and 20 MHz
Near End Crosstalk (NEXT)
Measured using Super Injector
User-programmable frequency range from 1 to 20 MHz, in steps less than or equal to 125 KHz
Range -45 to 0 dB
DC Resistance
Range 0.2 to 2,500 ohms; accuracy +/- 0.3 ohms or +/- 2%
802.3 and 10BASE-T Network Monitor
Audio and visual indicators (bar graph)
802.5 Token Ring Network Monitor
Use with optional RING SCANNER
10BASE-T Hub Activation
Link test pulse generated per IEEE 802.3 10BASE-T specifcations in Activate Hub mode
Continuity
Audio and visual indicators from 0-200 ohms
Pulse Output – Scope Mode
Allows oscilloscope connection for additional TDR analysis
Power
Rechargeable NiCAD batteries
Battery Management Low battery audio and visual indicators
Charging time 14 hours to full charge, automatic power-off 2 minutes after no activity (User-programmable)
Physical
Dimensions 4″ x 7.5″ x 1″
Weight 2 lbs.
Environmental
Temperature 0 to 40° C operating (32-104° F)
Humidity 10 to 90% humidity (non-condensing) operating; 5 to 95% humidity (non-condensing) storage
Display
16 character by 2-line liquid crystal display
Noise Detection
Steady state noise 0 to 1.0 volts RMS measured in three frequency bands: Low 40 Hz to 150 kHz
Mid 150 kHz to 16 MHz
High 16 MHz to 100 MHz
Range 40 Hz to 50 MHz, 0-1V RMS; 50 MHz to 100 MHz, 0-250 mV RMS
Impulse noise in counts/minutes up to 999, with thresholds +/- 0.262, 0.524, 1.0 and 2.0 volts

Condition: Refurbished / Calibrated
Warranty: 90 Day Exchange

Included     
– Microtest NEXT SCANNER Network Cable Certifier (BC# 19641)
– Microtest Super Injector (BC# 19640)
– Microtest Transceiver Monitor
– Microtest RJ-45 Breakout Box
– Unterminated RJ-45 Cable Adapter
– Serial To RJ-45 Adapter
– (3) Ethernet Cables
– (2) BNC Cables
– RJ11 Cable
– Ribbon Cable
– (2) RJ-45 To BNC Adapters
– (2) Conductor Cables
– BNC Connector
– Clip Cable P/N: 2905-2621-02
– RJ45 Coupler Cable
– AC Adapter/Charger
– Hard Copy User Manual
– Hard Carrying Case

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