Simplex 4100 Series Installation Instructions Manual page 19

Wiring,
Continued
Media Card Wiring
Data wiring is dependent on the type of media card used on each 4100-6014 NIC in the system.
Guidelines
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TB1 on the NIC motherboard (565-275) corresponds to the media card in the NIC
daughter card's (565-516) right port (using the NIC daughter card's connector P6).
TB2 on the NIC motherboard corresponds to the media card in the NIC daughter card's
left port (using the NIC daughter card's connector P5).
As stated earlier, one NIC daughter card can accommodate any two different types of
media boards, or two of the same type.
Two of each media card are required to complete a line between NICs. If one NIC's right
port contains a modem media card, the next connected NIC must have a modem media
card in its left port.
The Fiber-Optic Media Card is the only media card that connects NICs without using the
NIC daughter card's TB1 and TB2. Instead, the fiber connection is made directly on the
fiber-optic card.
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