Specifications

ES10 Page 14/100
Document status: Released Operating Manual rev. 07, 25.09.13
The optical interface can be ordered with optical connectors as specified in in chapter 1. Without
the need of using special tools it is possible to change the optical interface by replacing the
optical connector interface plate by another one as specified.
For connecting the transmitter with an EMS (element management system) or a NMS (network
management system) an Ethernet 10/100 Base-T Ethernet interface is available at the rear side
of the ES10 (a-version). This Ethernet interface supports SNMP and HTTP protocols. The IP
address for the integrated Webserver can be modified by using the push buttons at the front
panel or the USB local interface at the rear side.
An additional RS485 (master) interface has been implemented at the ES10XLa to poll other
equipment like EDFAs or optical switches.
Five general purpose input/output ports are available via a mini-DIN connector on the rear side of
the transmitter. Port #0 and port #1 are I/O ports, port #1 to port #4 are input-only ports. The ports
can be used for additional alarm or remote functions. They are accessible via the Webserver
interface.
The ES10 b-version offers two RS485 (slave) interfaces for EMS or NMS. Furthermore, there is
one alarm output, which can be used for simple alarm messaging functions.
2.2 Principle of Operation
The transmitter is based on five functional blocks: RF-path, cw-DFB-laserdiode, integrated optical
modulator, control electronics and power supply. The functional diagram is shown in Fig. 2.2.1.
The RF input signal is fed into a preamplifier including an automatic gain control circuitry. The
AGC stabilizes the output signal of the preamplifier to maintain a stable RMS- (root-mean-square)
optical modulation index (OMI) of the optical modulator. Input level variations are compensated as
long as the AGC circuit is working in its nominal gain range.
Fig. 2.2.1. ES10 Block Diagram
Micro Processor
LCD Panel
Push Buttons
NEC-E
OUT #1
Power
In
LEDs
OUT #2
SBS
RS485 (slave)
IN
CATV
ES10
TP
CATV
AC/DC
DC
AC/DC
DC
RMS
RMS
I/O #1..#5
Ethernet
USB
RS485 (master)
I/O #0