-1-
SPECIFICATIONS
INTRODUCTION
The TWT-1 Telephone Line Analyzer has been designed to test telephone wall plates using RJ-11 and RJ-45
jacks. The most common jack used in homes, offices, or commercial establishments is the RJ-11. It is designed
to connect up to three telephone lines. However, it is most common to have one or two lines connected to the
jack. Your TWT-1 Tester will test up to two lines on an RJ-11 jack or up to four lines on an RJ-45 jack.
When testing a wall plate using an RJ-11 in a home, keep in mind that the single line may have multiple phones
connected. Figure 4 shows a home or office with three phones connected to a single incoming line. Note they
are in parallel. The 42A block, shown in Figure 4, is where your telephone lines start in your home or office.
The 42A block may have terminals marked “R”’ and ”‘T”. “R” stands for Ring and “T” stands for Tip. If correct
wiring procedures were followed, then red goes to “R” ring and green goes to “T” tip. Color code terminations
should be followed at all wall plates.
Figure 1
Surface Mounting
Modular Jack
Figure 2
Wall Plate Using RJ-11 or
RJ-45 Jacks (Modular Outlet)
Figure 3
Another Type of Wall Plate Using
RJ-11 Jack (Modular Outlet)
Wall
Wall
Desk
R
T
42A
Red
Green
Single Line
To Protector
Line from outside
To other phones
Modular
Jack
Plug
Figure 4
Multiple Phones Connected to a Single Line
CATEGORY OF WALL PLATE JACKS
• Standard RJ-11 modular jacks with active telephone lines (one or two lines).
• Standard RJ-45 modular jacks with active telephone lines (one to four lines) for configuration EIA/TIA 568A
or B, AT&T 258A, token ring, or 10 BASE-T.
MULTIPLY FUNCTIONS
• Polarity identify (straight or reverse) cable and/or pairs.
• Open or short wiring test.
ENVIRONMENTAL CONDITIONS
• Indoor Use
• Operating Temperature: 5
O
C to 40
O
C / 41
O
F to 104
O
F
• Altitude up to 2,000M
• Storage Temperature: -40
O
C to 60
O
C / -40
O
F to 140
O
F
• Pollution Degree: 2
• Relative Humidity: 0% to 90% (0
O
C / 32
O
F to 35
O
C / 95
O
F)