Specifications

3 GENERAL DESCRIPTION
3.1 Introduction
The optical transmitter BK-ES10 represents a family of externally modulated 1550 nm
DFB laser transmitters. These products have been developed to fulfil the requirements
of modern Hybrid Fiber Coax networks for the transmission of CATV, cable phone and
cable data signals. There are currently 2 different base versions available:
• ES10-La for applications with moderate fiber length of about < 50 km
This version features a SBS threshold of 16.5 dBm, a narrow linewidth laser (0.65
MHz), output powers of 2 * 7 dBm (-70 version) or 2 * 8.5 dBm (-85 version) and a
RS485 interface for EMS (element management systems).
For highest requirements on transmission performance and features the
• ES10-XLa for applications with very long fiber lengths exceeding 50 km
is proposed. This version offers a SBS threshold which can be adjusted between 13
and 19 dBm, a very narrow linewidth laser (0.3 MHz), output powers of > 2 * 8.5 (-
85 version) or > 2*10 dBm (-100 version), ITU – grid compatible wavelength which
can be adjusted by +/- 100 GHz, an 10/100 Ethernet webbrowser and SNMP
interface for EMS/NMS (element/network management systems). Future proof
operation is accomplished due to the possibility to download updates for the
network server firmware and the transmitter firmware.
Both transmitters ES10-La and XLa transmitter are offered for 5 different standard
frequency plans. Specifications for other frequency plans are available on request.
The optical transmitter comes in a 1 unit high 19“ housing. Fig. 2.1 shows the view of an
ES10 with RFin socket, RFmonitor socket and optical connectors on the front panel.
Optionally these connectors can be located on the rear panel.
Figure 2.1: View of ES10
A Liquid Crystal Display (LCD) provides information about actual settings and properties.
6 push buttons are used to enter data locally. The background light of the LCD
automatically is switched on, in case that a push button is pressed.
The ES10 provides plug in power supply modules. The minimum configuration is one
power supply + fan module together with a redundant fan-only module. Optionally for
improved reliability two power supply + fan modules can be used. The power supply
modules are offered in 3 different input voltage specifications: 100 ... 240 VAC, 36 ... 60
VDC and 24 VDC. One feature of the ES10 is the possibility to use two different power
supply + fan modules in one transmitter: e.g. power supply + fan module no. 1 could be
a 100 ... 240 VAC unit, power supply + fan module no. 2 could be a 36 ... 60 VDC unit.
Funea Broadband Services bv product information page 7 of 31
version: 11-02