-2--5-
SPECIFICATIONS
CATEGORY OF CABLE
• Unshielded communication cable with RJ-11 and RJ-45 connectors.
• Ethernet 10 Base-T, Token Ring, EIA/TIA-568A/B, AT&T 258A, and
USOC.
• 50 or 75Wcoaxial cable with F connectors.
• 50 or 75Wcoaxial cable with BNC connectors. Must use F to BNC
adapters.
Maximum testing length for all cable types is 1,000 feet.
MULTIPLE FUNCTIONS
• Testing cables before or after their installation.
• Mapping Function (to test individual wire pairs or coaxial cables).
• Cable identification (straight or cross-pinning).
• Pair identification (straight or cross-pinning).
• Open/short wiring test.
ENVIRONMENTAL CONDITIONS
• Operating Conditions: 0OC - 45OC / 32OF - 113OF
70% RH max.
• Storage Conditions: -10OC - 50OC / 14OF - 122OF
80% RH max.
POWER
• Standard or alkaline 9V battery
• Low battery indicator (Lo Batt.)
• Auto power-off function (30 s)
INTRODUCTION
The TCT-255 Cable Tester is a convenient instrument for testing different
unshielded wiring schemed communication cable with RJ-11 and RJ-45
connectors and coax cable. This tester can be used for testing cables
before and/or after they are installed. The tester offers easy operation by
having to push only one button. Testing status is indicated by multiple
LEDs and an auto power-off function maximizes battery life. Soft vinyl
case provides storage for tester and terminator.
Ethernet
10Base-T
EIA/TIA-568A EIA/TIA-568B
AT&T 258A
8-Position
Token Ring
USOC 8 USOC 4
(Prs. 1&2)
USOC 6
(Prs. 1,2 & 3)
WIRING SCHEMES
(Y) 1
(G) 2
(R) 3
(BL) 4
(Y) 1
(G) 2
(R) 3
(BL) 4
1
2
3
4
1
2
3
4
(BL) 1
(Y) 2
(G) 3
(R) 4
(BK) 5
(W) 6
1
2
3
4
5
6
(BL) 1
(Y) 2
(G) 3
(R) 4
(BK) 5
(W) 6
1
2
3
4
5
6
(BL) 1
(OR)2
(BK) 3
(R) 4
(G) 5
(Y) 6
(BN) 7
(S) 8
1
2
3
4
5
6
7
8
(BL) 1
(OR)2
(BK) 3
(R) 4
(G) 5
(Y) 6
(BN) 7
(S) 8
1
2
3
4
5
6
7
8
RJ-11 (4-Wire) Straight-Pinning RJ-11 (4-Wire) Cross-Pinning
RJ-11 (6-Wire) Straight-Pinning RJ-11 (6-Wire) Cross-Pinning
RJ-45 (8-Wire) Straight-Pinning RJ-45 (8-Wire) Cross-Pinning
NOTE: Cross-pinning is for typical telephone use.
