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EKI-7758F User Manual 2
Chapter 1 Overview
1.1 Introduction
To create reliability in your network, the EKI-7758F comes equipped with a proprietary
redundant network protocol—X-Ring that was developed by Advantech, which
provides users with an easy way to establish a redundant Ethernet network with ultra
high-speed recovery time less than 10 ms.
Aside from 4 x 10/100/1000Base-T(X) fast Ethernet ports, the EKI-7758F come
equipped with 4 SFP (mini-GBIC) fiber optic ports. Traditional RJ-45 ports can be used
for uplinking wide-band paths in short distance (< 100 m), while the SFP slots can be
used for the application of wideband uploading and long distance transmissions to fit
the field request flexibility. Also, the long MTBF (Mean Time Between Failures)
ensures that the EKI-7758F will continue to operate until a Gigabit network
infrastructure has been established, without requiring any extra upgrade costs.
1.1.1 The SFP Advantage
The EKI-7758F’s four SFP fiber slots provide a lot of flexibility when planning and
implementing a network. The slots can accept any SFP-type fiber module and these
modules are designed for transmitting over distances of either 500m (multi-mode),
10km, 30km, 50km, 70km or 110km (single-mode) – and the slots support SFP
modules for WDM single-fiber transmissions. This means that you can easily change
the transmission mode and distance of the switch by simply pulling out the SFP
module and plugging in a different module. The SFP modules are hot-swappable and
plug-and-play! Also, the fact that the switch has four of these slots, means that the
network manager can, for example, have one 10km module in one slot and one 110km
in the other.
1.1.2 High-Speed Transmissions
The EKI-7758F includes a switch controller that can automatically sense transmission
speeds (10/100 Mbps). The RJ-45 interface can also be auto-detected, so MDI or MDI-
X is automatically selected and a crossover cable is not required. All Ethernet ports
have memory buffers that support the store-and-forward mechanism. This assures that
data is properly transmitted.
1.1.3 Dual Power Input
To reduce the risk of power failure, the EKI-7758C provides +12 ~ 48 V
DC
dual power
inputs. with power reserve protection, which can prevent the switch device broken by
wrong power wiring. When one of power input is fail, P-Fail LED will turn on and send
an alarm through a relay output for notifying user.
1.1.4 Flexible Mounting
EKI-7758F is compact and can be mounted on a DIN-rail or panel, so it is suitable for
any space-constrained environment.