What are the differences in impedance among the D12B, D12S, and D75S 2M interface boards?

wissal · Created Jan 21, 2020 20:44:46

Hello,

The differences in impedance among the D12B, D12S, and D75S 2M interface boards are as follows:

D12B interface boards can be used with 75-ohm and 120-ohm boards, and provide 75-ohm unbalanced ports and 120-ohm balanced ports. However, they cannot provide protection for services.
D12S interface boards can be used only with 120-ohm boards. They can also be used as PDH interface switching boards, and can provide protection for services.
D75S interface boards can be used only with 75-ohm boards. They can also be used as PDH interface switching boards, and can provide protection for services.

Thanks

wissal · Created Jan 21, 2020 20:44:46

Hello,

The differences in impedance among the D12B, D12S, and D75S 2M interface boards are as follows:

D12B interface boards can be used with 75-ohm and 120-ohm boards, and provide 75-ohm unbalanced ports and 120-ohm balanced ports. However, they cannot provide protection for services.
D12S interface boards can be used only with 120-ohm boards. They can also be used as PDH interface switching boards, and can provide protection for services.
D75S interface boards can be used only with 75-ohm boards. They can also be used as PDH interface switching boards, and can provide protection for services.

Thanks