Nitek EL1551U - Manual (Page 5)

Installation & Setup
Equipment Requirements & Mounting: The process for utilizing the EL1551U is quick and easy. A com-
mon topology involves a length of existing single twisted pair cable up to 1,600ft / 500m, the EL1551U trans-
mitter and receiver pairs (ET1551U & ER1551U), an IP camera or other peripheral network device referred
to as the Powered Device or PD, and a 3rd party PoE network switch or Power Sourcing Equipment/PSE.
The PD and PSE should both be either 802.3af or 802.3at compliant. That is requiring or producing no more
then 15.4 W for 802.3af and up to 25.5W for 802.3at PoE power
The method for facilitating Ethernet communication over single twisted pair cable starts with connecting the
ER1551U to the Power Sourcing Equipment, usually a switch, RJ45-to-RJ45 via a CAT5e/CAT6 patch ca-
ble. The ER1551U two-position plug enables connectivity to the length of single twisted pair cable at the
head end. The IP camera interfaces with the ET1551U via RJ45 network port and a CAT5e/CAT6 patch
cord. The Link Port of the ET1551U connects to the length of single twisted pair cable by its two-position
plug at the camera end. Power from the PSE provides operational power for both EL1551U units. An illus-
tration of this is represented below in the “Installment Topology - Type B” diagram.
Upon final power up the devices will under go initialization and auto-configuration processes, also see LED
Indicator chart on page 7 which may take a number of seconds, time variations are device/installation/
topology parameter dependent, to complete before Ethernet communication commences. If issues arise dur-
ing the installation process please see the “Trouble Shooting Tips” section (page 8). You may also contact
our web based live tech support at:
www.nitek.net ; call (800) 528-4343 in the USA, and (847) 259-8900
from outside the USA in order to speak with one of our engineers directly.
Installment Topology - Type B
Shown in the diagram above, are the EL1551U device include a transmitter and a receiver unit.
They are connected to an existing single twisted pair cable which enables the transmission of up
to 100Mbps of network data. Power for the units is derived from the 3rd party PoE Injector. Total
distance, via single twisted pair cable, between the EL1551U devices cannot exceed
1,500ft./460m.
PoE
Data
IP PoE
Camera
Single Twisted Pair Cable
up to 100Mbps
at 1500ft/460m
Standard Network Switch
PTZ Controller
NVR/ Video Server
Monitor
PoE Injector
Data