4-Way Bridging Adapter (P-C-C-C-C)

This board bridges all 50 conductors on a male amphenol to four female amphenols.

Primarily designed for legacy telecom use with 1A2 key systems, but may also be applicable for systems using amphenol connectors for fanning out intercom voice paths, etc.


Fully assembled 4-Way Bridging Adapters, revision A boards.

If you're interested in purchasing these boards fully assembled and tested, contact erco@seriss.com with the email Subject: "4-Way bridging adapter Inquiry" and I can supply ordering info for fully assembled/tested boards. Try to include some info about your application.

Description

These boards were designed mainly for bridging 1A2 key telephone systems together to simplify office space wiring for neighboring desks each with 1A2 telephones.

An example application would be four desks with 2831 phones (20 button sets) with all 19 lines bridged to all 4 phones:

Another application, to demo a large 1A2 30-button key telephone (2861) all lit up using a 4-way bridge with an off-screen 66-block wired to a 12VDC supply to light all lamps in each row:

Board Layout And Schematics

I used Sprint Layout 6.0 to create the PCB layout for these boards.

You don't need this software to print these boards yourself; you can just use the Gerber + Drill files to have them printed.

You only need the software if you want to make changes to the board. I found Sprint6 very easy to work with, as you can "just draw it". Has a pleasant user interface and is very stable.. it never crashed once in the over 5 years I've been working with it. And one can generate Gerber files from this software, allowing boards to be printed just about anywhere in the world, both domestic (OSHPark), and overseas (JLCPCB, PCBWAY).

I think the software cost me about $60 USD for a license, but I think you can use the eval to open and do everything but save. $60 is cheap, compared to what most PCB layout software costs. So with this program you can load up the board's PCB Layout File to edit it, generate Gerber/Drill files, and send for printing.

Note that in the lower-right corner of the "All Layers" photo there's a table of part#s for the amphenol connectors. Purchase the "Solder Type" connector part#s, not the "Press-Fit". (Press-fit is only for mass production, and you need a jig to assemble press-fit parts correctly)




All Layers
Top Copper	Bottom Copper
Top "Photo"	Bottom "Photo"

NOTE:There are no schematics needed for this board; all amphenol connectors are bridged to each other straight across, pins 1 through 50.