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TIA568 Wiring Standards

How to decide which wiring pattern to use:

1. Does the job specification call out a wiring pattern?
2. Does the customer/end user have a preference for T568A or T568B?
3. Have patch panels already been purchased for the job? If so, they will probably be either T568A or T568B. The jacks should be wired to the same pattern as the panels.
4. Are you adding on to an existing wiring plant? If so, your new wiring should match the existing wiring.

If none of the factors above apply, either T568A or T568B may be used. It is important to ensure that the workstation connectors and the patch panels are wired to the same pattern. T568B is commonly used in commercial installations, while T568A is prevalent in residential installations.

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For a more complete selection of products (no online ordering available at that site), visit the original Lashen Electronics website located at http://www.lashen.com.
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WHA3000P Digital 700 W hot air station with built in turbine


WHA3000P Digital 700 W hot air station with built in turbine

Weller WHA3000P Digital 700W Hot Air Station With Built-In Turbine


The WHA3000P will perform demanding repair tasks on circuit boards with complex fine pitch surface mounted components.

The advanced control technology coupled with user friendly operation, guarantees process control. The sophisticated automatic operation mode guarantees repeatability of the process and increases productivity and quality.

Extensive range accessories compliment the machine to promote flexibility.

LCD Display:

High contrast LCD characters clearly display the operating parameters.

Manual operation Operating parameters are selected by the operator.

Automatic mode A three-stage temperature/time profile controlling air temperature, air volume and process time can be stored in the machine memory to carry out repeatable repair operations. The WHP3000 hot plate can also be controlled in this mode. Up to 10 individual programs can be stored in the machines memory.

Both the WHA3000P and WHA3000V include a two-stage foot switch. Stage 1 activates the hot air flow, stage 2 activates the vacuum pickup. Additional Product Features and Benefits:
  • Setting Up down push buttons set the operating parameters of the air temperature, air volume and process time. LED indicators highlight the operating mode, start/ stop and vacuum functions.
  • Hot air pencil The ergonomic and powerful hot air pencil (700 W) together with the extensive range of patented technology nozzles make this tool very versatile. Hot air nozzles are secured to the tool by a clamping screw. A vacuum plate will lift the component from the board after reflow.
    A nozzle removal tool supplied with the machine enables rapid removal and replacement of nozzles, even when hot.
  • ESD safe The hot air is delivered through an ion trap to remove any charge and the tool handle and tubing are manufactured from static dissipative materials.
  • Stop and Go Hot Air Tool Holder The tool holder AKT30 is a stable support for the hot air pencil. When the pencil is replaced in the support the airflow rate is automatically switched to the standby mode, at a minimal flow rate, sufficient to maintain the nozzle at its operating temperature. Removal of the pencil will switch the airflow back to its selected flow rate.
  • Connections The rear of the machine has an RS232 interface for connection to the WHP3000 pre-heat plate or a PC for remote control. Socket for manual control or foot pedal.
  • Internal pump A powerful maintenance free rotary pump generates the machine airflow, variable up to 50 l/min.
  • External sensor A machine-mounted socket is fitted to receive a type K thermocouple; this would be used to record the temperature of a specific position on the circuit board and allow precise process monitoring.
Technical Specifications:
Dimensions:
(W x L x H)
9.5" x 10.6" x 6.7"
(240 x 270 x 170mm)
Mains voltage: 120 V
Max. heat power: 700 W
Temperature range: 122°F – 1022°F
(50°C – 550°C)
Control accuracy: ± 77°F
(± 25 °C)
Air volume: 5 - 50 l/min.
Vacuum: - 0.6 bar
Protection class 1
(control unit and hot air iron hard grounded)



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