manualshive.com logo in svg

Elenco Electronics TWT-1K, Assembly And Instruction Manual, Page: 8 / 16

Share
Download
Elenco Electronics TWT-1K Assembly And Instruction Manual Download Page 8

-7-

PC BOARD ASSEMBLY

Solder the following parts to the PC board.

D4 - Bi-Color LED

(see Figure D)

D1 - Bi-Color LED

(see Figure D)

D2 - Bi-Color LED

(see Figure D)

D3 - Bi-Color LED

(see Figure D)

Figure D

Mount the LED flat onto the PC
board with the flat side of the
LED in the same direction as
marked on the PC board.
Solder and cut off the excess
leads.

Figure C

Flat

1. Insert the cable with

RJ-11 plug into the
hole in the PC board
as shown, noting the
direction of the plug.

2. Insert the four colored wires

into the corresponding holes
in the PC board as shown.

3. Tug the cable down to the

position shown.

4. Turn the PC board

over. Solder the wires
and cut off the excess
leads.

1

4

1 - Black
2 - Red
3 - Green
4 - Yellow

Plug

PC Board

Summary of Contents for TWT-1K

Page 1: ...TELEPHONE LINE ANALYZER KIT MODEL TWT 1K Assembly and Instruction Manual Elenco Electronics Inc Copyright 2001 Elenco Electronics Inc 753082 ...

Page 2: ...show resistor values Semiconductor PARTS IDENTIFICATION 1 LED Miscellaneous PC Board Top Case Bottom Case Label Screw 4 Wire Cable with RJ 11 Plug IDENTIFYING RESISTOR VALUES Use the following information as a guide in properly identifying the value of resistors BAND 1 1st Digit Color Digit Black 0 Brown 1 Red 2 Orange 3 Yellow 4 Green 5 Blue 6 Violet 7 Gray 8 White 9 BAND 2 2nd Digit Color Digit ...

Page 3: ... 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...

Page 4: ...res terminating at the phone jack On many new phones the phone circuitry recognizes this reversal and corrects for it No LED Lit Indicates that the circuit is not operational open or shorted 3 HOW IT WORKS Figure 5 When we refer to an RJ 11 plug and jack we are generally referring to a single or dual line plug and jack In the industry they may sometimes refer to an RJ 11 2 as a single line jack an...

Page 5: ... Blue R2 Orange White T4 White Brown R4 Brown White 4 WIRING CONFIGURATIONS FOR RJ 45 JACKS EIA TIA 568A EIA TIA 568B or AT T 258A Token Ring 10 Base T Figure 9 Different Wiring Standards for RJ 45 8 Wire Jacks Plug Polarities Tip _ Ring Figure 11 Shows detail of how the tip and ring are connected on a eight connector cable for EIA TIA 568A standards on Figure 9 1 2 3 4 5 6 7 8 Figure 12 Shows how...

Page 6: ... must be heated sufficiently so that the solder flows freely Apply the solder simultaneously to the component lead and the component pad on the PC board so that good solder flow will occur Be sure that the lead extends through the solder smoothly indicating a good solder joint Use only rosin core solder of 60 40 alloy DO NOT USE ACID CORE SOLDER Do not blob the solder over the lead because this ca...

Page 7: ... gray brown gold see Figure A R5 680W 5 W Resistor blue gray brown gold see Figure A 8 Wire Cable with RJ 45 Plug see Figure B 4 Wire Cable with RJ 11 Plug see Figure C Figure A Mount the resistor flat against the PC board as shown Solder and cut off the excess leads Figure B 1 8 1 Blue 2 Orange 3 Black 4 Red 5 Green 6 Yellow 7 Brown 8 Gray 1 Insert the cable with RJ 45 plug into the hole in the P...

Page 8: ...D in the same direction as marked on the PC board Solder and cut off the excess leads Figure C Flat 1 Insert the cable with RJ 11 plug into the hole in the PC board as shown noting the direction of the plug 2 Insert the four colored wires into the corresponding holes in the PC board as shown 3 Tug the cable down to the position shown 4 Turn the PC board over Solder the wires and cut off the excess...

Page 9: ...following is the procedure for testing the PC board assembly and telephone line analyzer 5 Test the RJ 11 connector Touch the red wire of the battery snap to pin 3 and the black wire to pin 2 The LED D3 of the PC board 1 label should light green Touch the red wire of the battery snap to pin 2 and the black wire to pin 3 The LED D3 1 should light red Check the other LED in the same manner and refer...

Page 10: ...FINAL ASSEMBLY Assemble the case as shown 9 Screws Top Case Bottom Case Assembled PC Board Label Figure E Figure F Peel the backing off of the label and stick the label onto the top case ...

Page 11: ...rected See technical data for wall jack wiring Green 4 If the telephone line analyzer shows LED 1 with no light see Figure 16 it indicates that the line is open or wires are shorted Check the wall jack to make sure a wire is not bent too far down broken or touching another wire If the problem is not in the jack then you may need to call the telephone company 1 Remove the phone wire from the modula...

Page 12: ...e modular jack and insert the bigger telephone plug of the telephone line analyzer into the telephone jack to be tested 2 If the telephone line analyzer shows all green lights the modular jack is working with straight polarity of all pairs 3 If the telephone line analyzer shows all red lights the modular jack is working with reverse polarity of all pairs 4 If you have mixed colors of lights or som...

Page 13: ...straight and reversed wiring and simulates opens It also provides an RJ 45 jack for one two three or four line testing straight and reversed wiring and simulates opens Contact Elenco Electronics 800 533 2441 for availability and price of the telephone line simulator Model TT 250 A great teaching tool for the telecommunication field If the simulator Model TT 250 is not available for testing and tro...

Page 14: ...metal surface to be A solder free B clean C greasy D cold 6 Solder wick is used to A remove solder B solder in small parts C cleaning the soldering iron tip D removing flux 7 A cold solder joint is caused by A a solder bridge B using 60 40 solder C insufficient heat D acid core solder 8 When two adjacent foils accidentally touch it is called A a jumper B a blob C a solder hole D a solder bridge 9 ...

Page 15: ...ne Line Analyzer Model TT 400 A telephone line analyzer that provides fast indication of telephone line polarity ring and line voltage levels condition of phone line from user s telephone to central telephone office also can check basic telephone functions and condition of telephone line cord Available Assembled Model TT 400K Modular Crimping Tool Model HT 568 Cuts strips and crimps modular plugs ...

Page 16: ...he basic unit for frequency or cycles per second LED Light Emitting Diode A semiconductor diode emitting incoherent light at its P N junction when forward biased Modular Cable A telephone cable with modular plugs used to connect phones or devices to the system Modular Jack The female connector of a telephone outlet Modular Plug The male connector that plugs into a modular jack PC Board Printed Cir...

Reviews:

No comments