Lecip LV-700, Руководство пользователя, Страница: 6 / 64

Lecip Arcontia confidential (V1.00 2019-05-13)
3. Board to Board Connector
The passive part (Access Card) of the Arcontia validator is connected to the active part (Main
Board) through a pair of B2B connectors. Access card is equipped with receptacle side (J1)
while main board with mating header side (J1).
The connector pair is Hirose FX23 and FX23L series. It is a pair of 40+4 hybrid power/signal
contacts with floating ability.
Figure 4: FX23/FX23L XY-Floating Ability
Floating movable amount in both X and Y-direction is ± 0.6mm a side so totally floating
movable amount of both the receptacle and the header when they are connected with each
other is ±1.2 in both X and Y-direction.
Connectors are intended to be used with high speed transmission signals up to 8Gbps that is
applicable in the Arcontia Validator as communication lines such as Ethernet, RS-485 and RS-
232 need to go through the connector. Further, the differential impedance between a pair
signal pins is 100±Ω which is especially applicable on both Ethernet and RS -485.
As mentioned, the connectors are hybrid meaning that beside signal pins (40) they contain
also power pin (+4). The guide posts on the both sides of the connector are equipped with 4
lines of power contacts with 3A/pin capability.
Figure 5: FX23 Hybrid Construction