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Help & Info
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.
Click Here for a Full-Color Acrobat pdf file ( 697k ) - Right click to save it to disk.
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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Tone Test Set
Model 600LS is the most comprehensive tone test set, a must for professional telecom/data communications service and repair.
Features
- Traditional alternating tone signal for wire identification
- Line 1 & 2 polarity testing with 4 conductor modular plug
- Audible line condition testing; level indicates dead, off-hook & working lines
- Improved Talk battery supply for communication over inactive pairs
- Audible resistance level measurement
- Time & test functions using either modular plug or 24" alligator clip leads
Technical Specifications
| Power: |
One 9V battery, nominal life 100 hrs |
| Transmitter frequency: |
900/1100 Hz alternating nominal |
| Transmitter power into 600 ohms: |
7 dBm |
| Talk battery into 600 ohms: |
10 VDC |
| Voltage protection at 600 ohms in RES mode: |
52 VDC (higher in other modes) |
| Construction: |
High impact ABS case |
| Dimensions: |
1" x 2.375" x 6.25" |
| Lead Length: |
24" test leads |
| Weight: |
8 oz with battery |
Price: $102.90
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