Black Box Scan-LAN 80 User manual

1000 Park Drive • Lawrence, PA 15055-1018 • 724-746-5500 • Fax [phone]
© Copyright 1994. Black Box Corporation. All rights reserved.

SEPTEMBER 1994
TS624A
Scan-LAN 80
Cable Scanner
CUSTOMER SUPPORT INFORMATION
Order toll-free in the U.S. 24 hours, 7 A.M. Monday to midnight Friday: 877-877-BBOX
FREE technical support, 24 hours a day, 7 days a week: Call 724-746-5500 or fax [phone]
Mail order: Black Box Corporation, 1000 Park Drive, Lawrence, PA 15055-1018
Web site: www.blackbox.com • E-mail: [email protected]
ON/OFF CABLE ENTER
NOISE TRAFFIC
CALIBRATE
SPECIAL
FUNCTIONS
LENGTH
WIRE MAP
AUTOTEST
SCAN-LAN 80
SCAN-LAN 80
Remote
◆Autotest
◆Noise
◆Wire Map

CONTENTS
Chapter Page
1. Specifications..........................................................1
2. Introduction ...........................................................5
2.1 The Scan-LAN 80 Cable Scanner .................5
2.2 Features ..........................................................6
2.3 Controls..........................................................6
2.4 Connectors.....................................................8
2.5 The Remote Unit...........................................9
3. Cable Tests............................................................10
3.1 Autotest ........................................................10
3.1.1 Cable Type Selection ...................10
3.1.2 Testing Twisted-Pair Cables.........11
3.1.3 Testing Coax Cables ....................25
3.2 Individual Cable Tests .................................31
3.2.1 Wire Map (Twisted-Pair
Cables Only)...........................................31
3.2.2 Length Test ..................................32
3.2.3 Noise Test .....................................35
4. Traffic Measurement............................................39
5. Cable Calibration .................................................43
SCAN-LAN 80 CABLE SCANNER

SCAN-LAN 80 CABLE SCANNER
6. Custom Setup .......................................................46
6.1 Where to Begin............................................46
6.2 Units of Length............................................47
6.3 Audible Tone ...............................................47
6.4 Fault Threshold ...........................................48
6.5 Noise Threshold ..........................................49
6.6 Saving/Resetting Changes ..........................50
6.7 Resetting to the Factory Settings ................51
7. Maintenance.........................................................53
7.1 Self-Test........................................................53
7.2 Power............................................................55
7.2.1 The Scan-LAN 80 .........................55
7.2.2 The Remote Unit .........................56
Appendix A: Standard Cable Types ........................57
Appendix B: Cable Test Pass/Fail Limits................58
B.1 Twisted-Pair Cables .....................................58
B.2 Coaxial Cables .............................................63
Glossary ......................................................................64
Index ..........................................................................71

1
CHAPTER 1: Specifications
1. Specifications
Cable — Length: 20 to 4000 ft. (6 to
1219 m) coax, 20 to 2000 ft.
(6 to 610 m) UTP; Accuracy:
±2 ft. @ 20 to 200 ft. (±0.61 m
@ 6 to 61 m), ±1% @ 201 to
4000 ft. (±1% @ 201 to 4000 ft.
(±1% @ 61.2 to 1219 m);
Resolution: 2 ft. (0.61 m)
Cable Faults — Types: Shorts, opens, 2 inter-
mediate impedance anomalies;
Fault reflections threshold: 4%
default, 4 to 10% user-selectable
Calibrate cable
NVP — 0.50 to 0.99 c, 50 ft. (15.2 m),
minimum length
Idle Channel
Impulse Noise — Any impulse received within
1 µsec of the first impulse is
ignored; User-Selectable:
100 to 500 mV peak;
Default: 260 mV peak

2
SCAN-LAN 80 CABLE SCANNER
Input
Protection — Withstands continuous 56 VDC
applied through 400 ohms
(telco loop); withstands 175V
peak, 20 to 60 Hz through
100 ohms superimposed on
56 VDC for 100 milliseconds
(telco ringing)
Nonvolatile
CMOS memory — Current setup parameters and
cable NVP values are saved;
lithium battery backup
Near-End Crosstalk
(NEXT) — Frequency Range: 5 to 10 Hz
sweep in 100 KHz steps, 10 to
16 MHz sweep in 200 KHz
steps; Measurement Range:
0 to 40 dB; Accuracy: ±3 dB
Traffic
Monitoring — Ethernet only; Parameters
monitored: % Utilization,
% Collisions, Peak traffic,
Reverse Polarity (10BASE-T
only), Link Pulse Detect

3
CHAPTER 1: Specifications
(10BASE-T only), Jabber
detect; Other features: Link
Pulse Generation to activate
hub (10BASE-T only), bar-
graph activity indicator
Termination — Coax only; Range: 40 to 120Ω;
Accuracy: ±10Ω
Loopback
Attenuation — Twisted pair only; Frequency
Range: 5 to 10 MHz sweep in
100 KHz steps, 10 to 16 MHz
sweep in 200 KHz steps;
Measurement Range: 0 to
40 dB (0 to 20 dB one way);
Accuracy: ±3 dB
Impedance — Range: 40 to 120Ω(coax),
75 to 180Ω(twisted pair);
Accuracy: ±10Ω
Connectors — RJ-45 and BNC
User Controls — (5): ON/OFF, Scroll up, Scroll
down, Enter, Function Select
(7-position rotary switch)
Humidity — 10 to 75%, noncondensing

4
SCAN-LAN 80 CABLE SCANNER
Storage and Operating
Temperature — 32° to 104°F (0° to 40°C)
Indicators — (1) 4-line LCD display with
16 characters per line
Power — Main unit: (2) 9-volt alkaline
batteries; Remote unit:
(1) 9-volt alkaline battery
Size — Main unit: 1.7"H x 4"W x 7.6"D
(4.3 x 10.2 x 19.3 cm); Remote
unit: 1.3"H x 2.9"W x 3.8"D
(3.3 x 7.7 x 9.7 cm)
Weight — Main unit: 1.1 lb. (0.5 kg);
Remote unit: < 0.3 lb.
(< 0.1 kg)

5
CHAPTER 2: Introduction
2. Introduction
2.1 The Scan-LAN 80 Cable Scanner
The Scan-LAN 80 is an easy-to-use, affordable,
battery powered, handheld tester for maintaining
and troubleshooting coax and twisted-pair LAN
cable installations.
Through Autotest, the Scan-LAN 80 measures critical
performance characteristics of LAN cable instal-
lations, compares the results against IEEE LAN
specifications, and gives a PASS/FAIL indication.
Live network performance may also be monitored
and analyzed for Ethernet networks.
Your Scan-LAN 80 should come with the following
accessories: an RJ-45 Remote Unit, a 24-inch
(61-cm) RJ-45 male to RJ-45 male Category 5 patch
cable, and this user’s manual. Please contact your
supplier if any of these components are missing.

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SCAN-LAN 80 CABLE SCANNER
2.2 Features
•Cable length—The length of the cable is
measured and up to two fault anomalies are
displayed, using time-domain reflectometry
(TDR).
•NEXT (Near-end crosstalk)—NEXT is measured
between 5 and 16 MHz on twisted-pair
networks.
•Attenuation—The cable attenuation is measured
between 5 and 16 MHz on twisted-pair
networks.
•Wire Map—Tests that the UTP cable is wired
correctly for the selected network.
•Traffic Monitoring—The Scan-LAN 80
continuously displays the percentage of
network utilization along with a bar-graph
display of network activity.
2.3 Controls
The Scan-LAN 80 is operated with a rotary function
selector and four pushbutton switches. See Figure 2-1.
The Rotary Function Selector selects the operating
mode (Autotest, Wire Map, Length, Noise, Traffic,
Calibrate, or Special Functions).