DEV 7231 User manual

User Manual
DEV 7231, DEV 7232, DEV 7233, DEV 7238,
DEV 7241, DEV 7244, DEV 7251
(Optical Transmitter Modules)
DEV 7331, DEV 7332, DEV 7333, DEV 7335,
DEV 7337, DEV 7338, DEV 7341, DEV 7344
(Optical Receiver Modules)
DEV 7415, DEV 7425
(EDFA Optical Amplifier Modules)
DEV 7512, DEV 7514, DEV 7518
(Optical Splitter Modules)
DEV 7612, DEV 7614, DEV 7618, DEV 7658
(Optical De-/Multiplexer Modules)
Optribution® Modules
DEV Systemtechnik GmbH
Grüner Weg 4A
61169 Friedberg
GERMANY
Tel: [phone]
Fax: [phone]
[e-mail]
www.dev-systemtechnik.com
Revision: 2017-11-02
DEV 91-0097-L

User Manual DEV 7xxx Optribution® Modules
2 Copyright DEV Systemtechnik GmbH 2012-2017
Table of Contents
1Revision History----------------------------------------------------------- 3
2Introduction---------------------------------------------------------------- 3
2.1 Warranty---------------------------------------------------------------------------------- 3
2.2 Limitation of Warranty---------------------------------------------------------------- 4
2.3 Warnings---------------------------------------------------------------------------------- 4
3Product Description ------------------------------------------------------ 5
3.1 Modules Description ------------------------------------------------------------------ 5
3.1.1 Optical Transmitter Modules DEV 72xx-------------------------------------------- 6
3.1.2 Optical Receiver Modules DEV 73xx ------------------------------------------------ 8
3.1.3 EDFA Optical Amplifier Modules DEV 74x5 ------------------------------------- 10
3.1.4 Optical Splitter Modules DEV 751x ----------------------------------------------- 10
3.1.5 Optical De-/Multiplexer Modules DEV 76xx ------------------------------------ 11
3.2 Redundancy Principles -------------------------------------------------------------- 12
3.2.1 1+1 Redundancy Options ----------------------------------------------------------- 12
3.2.1.1 "No Single Point of Failure" (NSPoF) Options ---------------------------------- 14
3.2.2 N+1 Redundancy Options ----------------------------------------------------------- 15
4Installation Instructions------------------------------------------------18
4.1 Scope of Delivery --------------------------------------------------------------------- 18
4.2 Installation of the Product --------------------------------------------------------- 18
4.3 Device Factory Settings ------------------------------------------------------------- 18
4.3.1 Factory Settings for the Optical Modules --------------------------------------- 18
5Operation of the Product ----------------------------------------------19
6Event Indication ----------------------------------------------------------20
7Technical Data and Options -------------------------------------------20
8Conformance Declarations --------------------------------------------20
8.1 Certificate of Conformance -------------------------------------------------------- 20
8.2 EU Declaration of Conformity ----------------------------------------------------- 23
9Glossary --------------------------------------------------------------------24
10 Notes------------------------------------------------------------------------24

User Manual DEV 7xxx Optribution® Modules
Copyright DEV Systemtechnik GmbH 2012-2017 3
1Revision History
Revision (Date)
Author
Short Description
A (18-Apr-2012)
WP
Initial version
(…)
I (02-Feb-2017)
WP
Added NSPoF description
J (22-Mar-2017)
WP
Supplementations on NSPoF description
K (10-May-2017)
WP
Minor corrections and supplementations
L (02-Nov-2017)
WP
Reworked document format
2Introduction
Thank you for purchasing DEV Systemtechnik Optribution® products.
This user manual is intended to supplement the documentation of the available
Optribution® chassis with information concerning the optical modules that are to
be applied in these chassis.
DEV Systemtechnik offers various optical modules for the conversion of RF signals.
Additionally, several optical modules are available in order to amplify, to combine,
or to distribute the optical signals. These modules can be installed in 1 RU, 3 RU,
4 RU, or in outdoor Optribution® chassis, which are capable to manage a different
number of signal channels.
There are separate user manuals for the different Optribution® chassis and this
common user manual for the Optribution® modules. Since the Optribution®
module product portfolio is continually changing, this division is supposed to
improve the documentation update process.
In addition to the description of the optical modules, this Optribution® modules
user manual explains the general redundancy principles.
DEV Systemtechnik GmbH declares that this equipment meets all relevant
standards and rules. Each unit carries a CE mark.
Please read all instructions before installation or usage of the equipment!
2.1 Warranty
Each product has a warranty against defects in material and workmanship for a
period of two years from the date of shipment.
During the warranty period DEV Systemtechnik will, at its option, either repair or
replace the product if it turns out to be defective.
For warranty, service, or repair, the product must be returned to DEV System-
technik. The customer has to pay shipping charges to DEV Systemtechnik and
DEV Systemtechnik will pay shipping charges to return the product to the customer.
However, the customer is obliged to pay all duties, all taxes, and all other additional
costs arising from the shipment of the product.
DEV Systemtechnik warrants that the software and firmware designated by
DEV Systemtechnik for use with the product will execute its programming
instructions if installed properly. DEV Systemtechnik does not warrant that the
operation of the product, software, or firmware will be uninterrupted or error-free.

User Manual DEV 7xxx Optribution® Modules
4 Copyright DEV Systemtechnik GmbH 2012-2017
2.2 Limitation of Warranty
The preceding warranty does not apply to defects resulting from:
improper site preparation or site maintenance;
improper or inadequate interfacing of the product;
unauthorized modification or misuse of the product;
the application of software supplied by the customer;
improper or inadequate maintenance of the product;
operation beyond the environmental conditions specified for the product.
2.3 Warnings
The following safety measures must be observed during all phases of operation,
service, and repair of the equipment. Failure to comply with the safety precautions
or warnings in this document violates safety standards of design, manufacturing,
and intended use of the equipment and may affect the built-in protections.
DEV Systemtechnik shall not be liable for the failure of users to comply with these
requirements.
Disconnect the chassis in which the optical modules are applied from any external
power line before opening of the housing. In any case, the equipment is to be
opened by trained service staff, only.
Environmental Conditions
This equipment is designed for indoor use and for an ambient temperature range.
Laser Safety
Safety of Laser Products
DEV Systemtechnik recommends to follow the governing standard of the
country where the product is operated, to assure regulatory compliance, and to
provide the necessary safety programs to protect the operators and other
persons who get in contact with the product.
It is recommended to power down the chassis in which the optical modules are
applied while working on the optical fiber wiring.
The optical modules operate with light at a non-visible wavelength. Highest
caution has to be taken, especially with EDFA optical amplifier modules and
with optical transmitter modules, since they produce laser light that is capable
to harm the human eye!
All optical connectors have to be equipped with the appropriate protection
cover if no optical fiber is (to be) connected to an optical module.
Direct exposure to the beam is to be avoided, i.e. do not look into
unterminated optical ports or at fibers that connect to unknown sources.

User Manual DEV 7xxx Optribution® Modules
Copyright DEV Systemtechnik GmbH 2012-2017 5
3Product Description
The product description stated here is related to the optical modules being subject
of this manual. For the description of the Optribution® chassis with their cabling
options, distribution options, IRD controlled switch options, and redundancy
options (here, only the redundancy principles are depicted), please refer to the
corresponding Optribution® chassis user manual.
3.1 Modules Description
The DEV Optribution® family is a series of products for the processing of optical
signals. There are available a number of Optribution® chassis which are to be
equipped with optical modules. These optical modules are described in the
following.
All modules with applied knurled head screws can be removed, installed, and/or
exchanged even during the operation of the equipment, please refer to the
corresponding chapter in the Optribution® chassis user manual.
A short listing of the available optical modules is provided here for reference.
There are different optical transmitter modules and different optical receiver
modules that can be installed in the Optribution® chassis.
3.1.1 a. DEV 7231 Basic Optribution® Transmitter; 950…2150 MHz; SC/APC
3.1.1 b. DEV 7232 Advanced Optribution® Transmitter; 950…2150 MHz; 1550 nm; SC/APC; with Limiter Function
3.1.1 c. DEV 7233 Top Performance Optribution® Transmitter; 700…2300 MHz; SC/APC;
with adjustable Gain and Automatic OMI Optimization
3.1.1 d. DEV 7238 UHF/VHF Optribution® Transmitter; 10, 47…1006 MHz; SC/APC; 1550 nm
3.1.1 e. DEV 7241 Basic Twin Optribution® Transmitter; 950…2150 MHz; SC/APC
3.1.1 f. DEV 7244 Optribution® Transmitter; 10 MHz, 700...2300 MHz; SC/APC; Single Input
3.1.1 g. DEV 7251 DWDM Optribution® Transmitter; 700…2300 MHz; SC/APC;
with adjustable Gain and Automatic OMI Optimization
3.1.2 a. DEV 7331 Basic Optribution® Receiver; 950…2150 MHz; SC/APC
3.1.2 b. DEV 7332 Advanced Optribution® Receiver; 950…2150 MHz; SC/APC; with adjustable Gain
3.1.2 c. DEV 7333 Top Performance Optribution® Receiver; 700…2300 MHz; SC/APC;
with adjustable Gain and Slope
3.1.2 d. DEV 7335 Reference Optribution® Receiver; 10 MHz; SC/APC
3.1.2 e. DEV 7337 Basic UHF/VHF Optribution® Receiver; 47…862 MHz; SC/APC; with adjustable Slope
3.1.2 f. DEV 7338 Advanced UHF/VHF Optribution® Receiver; 47…1006 MHz; SC/APC;
with adjustable Gain and Slope
3.1.2 g. DEV 7341 Basic Twin Optribution® Receiver; 950…2150 MHz; SC/APC
3.1.2 h. DEV 7344 Optribution® Receiver; 10 MHz, 700...2300 MHz; SC/APC; Single Output with adjustable Gain
In addition, there are the other optical modules that can be installed:
3.1.3 a. DEV 7415 EDFA Optribution® Pre-Amplifier Module; 1529…1565 nm; SC/APC
3.1.3 b. DEV 7425 EDFA Optribution® Boost-Amplifier Module; 1529…1565 nm; SC/APC
3.1.4 a. DEV 7512 1:2 Optribution® Splitter; 1260…1610 nm; SC/APC
3.1.4 b. DEV 7514 1:4 Optribution® Splitter; 1260…1610 nm; SC/APC
3.1.4 c. DEV 7518 1:8 Optribution® Splitter; 1260…1610 nm; SC/APC
3.1.5 a. DEV 7612 1:2 CWDM Optribution® De-/Multiplexer; SC/APC, LC/APC
3.1.5 b. DEV 7614 1:4 CWDM Optribution® De-/Multiplexer; SC/APC, LC/APC
3.1.5 c. DEV 7618 1:8 CWDM Optribution® De-/Multiplexer; SC/APC, LC/APC
3.1.5 d. DEV 7658 1:8 DWDM Optribution® De-/Multiplexer; SC/APC, LC/APC; with Extension Port

User Manual DEV 7xxx Optribution® Modules
6 Copyright DEV Systemtechnik GmbH 2012-2017
3.1.1 Optical Transmitter Modules DEV 72xx
DEV 7241
Basic Twin
Optribution Transmitter
DEV 7232
Advanced
Optribution Transmitter
DEV 7233
Top Perform ance
Optribution Transmitter
DEV 7231
Basic
Optribution Transmitter
1A/1B Optical Output A/B
2A/2B RF LED A/B
3A/3B Bias LED A/B
1 O ptical Output
2 RF LED
3 Bias LED
4 O ptical Monitor LED
5 Bias Button
6 M onitor Port
1 O ptical Output
2 RF LED
3 Bias LED
L-Band Tx
Bias
RF
Out
La ser ra dia tion d o not v iew
dir ectly w / opti cal in strum ent s
Cla ss 1 M Las er pro duc t
Opt.
RF
Bias
Bias
Mon
L-Band Tx
Out
La ser ra dia tion d o not v iew
dir ectly w / opti cal in strum ent s
Cla ss 1 M Las er pro duc t
La ser ra dia tion d o not v iew
dir ectly w / opti cal in strum ent s
Cla ss 1 M Las er pro duc t
L-Band Tx
Bias
RF
Out A
Bias
RF
Out B
La ser ra dia tion d o not v iew
dir ectly w / opti cal in strum ent s
Cla ss 1 M Las er pro duc t
3
6
2A
2B
2
1 1
4
2
3
5
1A
3A
1B
3B
1 O ptical Output
2 RF LED
4 O ptical Monitor LED
6 M onitor Port
DEV 7238
UHF/VHF
Optribution Transmitter
Opt.
RF
Mon
CATV-Band Tx
La ser ra dia tion d o not v iew
dir ectly w / opti cal in strum ent s
Cla ss 1 M Las er pro duc t
1
4
2
6
DEV 7251
DW DM
Optribution Transmitter
1 O ptical Output
2 RF LED
3 Bias LED
4 O ptical Monitor LED
5 Bias Button
6 M onitor Port
Opt.
RF
Bias
Bias
Mon
L-Band Tx
Out
La ser ra dia tion d o not v iew
dir ectly w / opti cal in strum ent s
Cla ss 1 M Las er pro duc t
6
1
4
2
3
5
CH 63
DEV 7244
Optribution Transmitter
10 MHz, 700...2300 MHz
1 O ptical Output
2a RF LED L-Band
2b RF LED 10 M Hz
3 Bias LED
4 Optical Monitor LED
Opt.
Bias
RF
RF
L-Band
10 MHz
Tx
Out
La ser ra dia tion d o not v iew
dir ectly w / opti cal in strum ent s
Cla ss 1 M Las er pro duc t
3
4
1
2a
2b
All optical transmitter modules are plug-in modules and cover different frequency
ranges. The DEV 7231, DEV 7232, DEV 7233, DEV 7241, and the DEV 7251 are
designed for the (extended) L-Band. The DEV 7238 is intended for UHF/VHF signals;
and the DEV 7244 provides two laser diodes, one for a 10 MHz reference signal and
the other for extended L-Band signals.
The connector type for the optical output(s) (1) is SC/APC by default, but can be
ordered as FC/APC (Option 07) or as E2000 HRL (Option 08), instead.
To realize CWDM applications, wavelength options are available for the optical
transmitter modules DEV 7232 (one option), DEV 7233 (nine options), and
DEV 7238 (nine options). The DEV 7251 optical transmitter module for DWDM
applications is available with 49 different wavelength options. For details on the
wavelength options, please refer to the corresponding spec sheets.
With the integrated RF level monitoring functionality of the optical transmitter
modules, the aggregated power level of the RF signal before the electrical/optical
conversion is measured and compared with an adjustable threshold. If the RF signal
is below the threshold level, an event is generated. The status is indicated via the
"RF" LED(s) [(2): green means ok, red indicates the signal level to be below the RF
threshold level] and additionally via Web Interface and via SNMP, given that the
applied Optribution® chassis provides these features.

User Manual DEV 7xxx Optribution® Modules
Copyright DEV Systemtechnik GmbH 2012-2017 7
The optical transmitter modules for the (extended) L-Band provide LNB power with
current monitoring, i.e. the modules are prepared to feed DC current through the
RF input port in order to supply LNBs or inline amplifiers with power. At the
DEV 7232, at the DEV 7233, and at the DEV 7251, the "Bias" push button (5) is used
to turn on [the "Bias" LED (3) is red or green, see below] or off [the "Bias" LED (3) is
off] the LNB power supply. Alternatively -or exclusively for the modules DEV 7231,
DEV 7241, and DEV 7244 with Option 35 (see below)-, the LNB power supply can be
switched in Local Mode via Web Interface, and in Remote Mode via SNMP, given
that the Optribution® chassis provides these features.
The RF input port of an optical transmitter module for the (extended) L-Band is
short circuit protected, though it is highly recommended to turn off the LNB power
while working on the RF cabling to avoid damages!
The current monitoring functionality is applied for the surveillance of the LNB
power supply of an optical (extended) L-Band transmitter module. I.e. the current
delivered by the RF input port is measured and compared with adjustable upper
and lower threshold values -i.e. the current monitoring interval-. The current
monitoring status is indicated via the "Bias" LED(s) (3) on the front panel of the
module: If LNB power is turned on and the supplied current is within the current
monitoring interval, the LED is green. If the lower limit of the current monitoring
interval (no or not enough current) or the upper limit of the current monitoring
interval (too much current is drawn) is exceeded, the LED is red. The current
monitoring status is indicated in parallel via Web Interface and via SNMP, given that
the Optribution® chassis provides these features.
Note:
For the Optribution® chassis providing a Web Interface, the "Bias" push button
at the modules DEV 7232, DEV 7233, and DEV 7251 can be operated in Local
Mode only and if it is not disabled, please refer to the related Optribution®
chassis user manual.
It is not recommended to supply a current sink (e.g. an LNB) with the LNB
power supply from more than one module -i.e. parallel connection-. Due to
variations of parts, the current load for the modules will be not balanced and
the current monitoring will not work properly.
By default, the DEV 7244 is equipped with a single RF input port, if ordered with
Option 35 two RF input ports are available, one for a 10 MHz reference signal
and the other for extended L-Band signals. Note that only with applied
Option 35 the DEV 7244 provides LNB power at the RF input port for the
extended L-Band.
The laser radiation detection of the DEV 7232, DEV 7233, DEV 7238, DEV 7244, and
of the DEV 7251 serves as the light status indication and may signalize that the laser
diode is not generating enough light -for that the aging of the laser diode will be the
most probable cause-. The "Opt." LED (4) at these modules turns from green to red
in this case. Additionally, the status of the laser radiation detection is indicated via
Web Interface and via SNMP, given that the Optribution® chassis provides these
features. Note that the "Opt." LED of the DEV 7244 monitors both laser diodes, i.e. it
turns to red if one of the laser diodes is not generating enough light (logical OR).

User Manual DEV 7xxx Optribution® Modules
8 Copyright DEV Systemtechnik GmbH 2012-2017
In addition, the DEV 7232 has a built-in limiter to prevent clipping of the laser diode
if the RF input level becomes too high. The DEV 7233 and the DEV 7251 additionally
provide manual gain control and the automatic OMI optimization feature, which
are to be configured via the Web Interface of the Optribution® chassis.
Finally, an RF monitoring port (6, labelled "Mon") is available at the transmitter
modules DEV 7232, DEV 7233, DEV 7238, and DEV 7251.
Note:
For selected optical transmitter modules applied in an Optribution® chassis
providing a Web Interface and/or SNMP: All LEDs of the module may blink
shortly as a receipt after the boot phase and after an operation mode change.
3.1.2 Optical Receiver Modules DEV 73xx
1 O ptical Input
2 O ptical Monitor LED
3 RF LED
4 Gain Up Button
5 Gain Down Button
6 M onitor Port
DEV 7332
Advanced
Optribution Receiver
DEV 7333
Top Perform ance
Optribution Receiver
DEV 7331
Basic
Optribution Receiver
1 O ptical Input
2 O ptical Monitor LED
3 RF LED
DEV 7337
Basic UHF/VHF
Optribution Receiver
1 O ptical Input
2 O ptical Monitor LED
3 RF LED
6 M onitor Port
7 Slope Potentiometer
L-Band Rx
RF
Opt.
In
Opt.
RF
Mon
L-Band Rx
In
Opt.
RF
10 MHz Rx
In
Mon
Opt.
RF
CATV-Band Rx
In
3
2
1 1
6
2
3
4
5
2
3
7
6
2
3
DEV 7335
Reference
Optribution Receiver
1 O ptical Input
2 O ptical Monitor LED
3 RF LED
1 1
1A/1B Optical Input A/B
2A/2B Optical Monitor LED A/B
3A/3B RF LED A/B
DEV 7341
Basic Twin
Optribution Receiver
Opt.
In B
L-Band Rx
RF
Opt.
In A
RF
Mon
RF
Opt.
CATV-Band Rx
In
1A
2A
1B
2B
3A
3A
2
3
4
5
1 O ptical Input
2 O ptical Monitor LED
3 RF LED
4 Gain Up Button
5 Gain Down Button
6 M onitor Port
DEV 7338
Advanced UHF/VHF
Optribution Receiver
1
6
DEV 7344
Optribution Receiver
10 MHz, 700...2300 MHz
1 O ptical Input
2 O ptical Monitor LED
3a RF LED L-Band
3b RF LED 10 M Hz
Opt.
RF
RF
L-Band
10 MHz
Rx
In
2
1
3a
3b
All optical receiver modules are plug-in modules and cover different frequency
ranges. The DEV 7331, DEV 7332, DEV 7333, and the DEV 7341 are designed for the
(extended) L-Band. The DEV 7335 is intended for the reception of 10 MHz reference
signals. The DEV 7337 and the DEV 7338 are designed for UHF/VHF signals; and the
DEV 7344 provides two detector diodes, one for a 10 MHz reference signal and the
other for extended L-Band signals.
The connector type for the optical input(s) (1) is SC/APC by default, but can be
ordered as FC/APC (Option 07) or as E2000 HRL (Option 08), instead.
The light condition detection serves as the light status indication and may signalize
that no or not enough optical power is received by the detector diode. An event in
this area is indicated via the "Opt." LED (2) turning from green to red; additionally
the status of the light condition detection is indicated via Web Interface and via
SNMP, given that the Optribution® chassis provides these features. Possible
reasons for this event are:

User Manual DEV 7xxx Optribution® Modules
Copyright DEV Systemtechnik GmbH 2012-2017 9
the transmitting laser diode is generating not enough light;
a broken fiber is preventing proper optical transmission;
the attenuation of the fiber is too high.
Note that the "Opt." LED of the DEV 7344 monitors both detector diodes, i.e. it turns
to red if one of the detector diodes is not receiving enough light (logical OR).
With the integrated RF level monitoring functionality of the optical receiver
modules the aggregated power level of the RF signal after the optical/electrical
conversion is measured and compared with an adjustable threshold. If the RF signal
is below the threshold level, an event is generated. The status is indicated via the
"RF" LED(s) [(3): green means ok, red indicates the signal level to be below the RF
threshold level] and additionally via Web Interface and via SNMP, given that the
applied Optribution® chassis provides these features.
The optical receiver modules DEV 7332, DEV 7333, and DEV 7338 have a built-in
gain control feature with a gain up ("↑") push button (4) and a gain down ("↓")
push button (5) to adjust the RF output level of the module. Alternatively (or
exclusively for the DEV 7344), the gain can be adjusted in Local Mode via Web
Interface and in Remote Mode via SNMP, given that the applied Optribution®
chassis provides these features.
Note:
For the Optribution® chassis providing a Web Interface the gain buttons on the
optical receiver modules DEV 7332, DEV 7333, and DEV 7338 can be operated
in Local Mode, only.
The optical receiver modules DEV 7333, DEV 7337, and DEV 7338 additionally
provide an integrated slope (or tilt) control feature.
A potentiometer (7) for the slope adjustment is located at the front side of the
DEV 7337. The slope of the optical receiver modules DEV 7333 and DEV 7338
can be adjusted via Web Interface or via SNMP for Optribution® chassis
providing these features.
Finally, an RF monitoring port (6, labelled "Mon") is available at the optical receiver
modules DEV 7332, DEV 7333, DEV 7337, and DEV 7338.
Note:
For selected optical receiver modules applied in an Optribution® chassis
providing a Web Interface and/or SNMP: All LEDs of the module may blink
shortly as a receipt after the boot phase and after an operation mode change.

User Manual DEV 7xxx Optribution® Modules
10 Copyright DEV Systemtechnik GmbH 2012-2017
3.1.3 EDFA Optical Amplifier Modules DEV 74x5
?: 15 29.. .156 5 nm
P0 : 100 m W
CW -L ase r
LA SE R RA DIA TION
AV OID EX POS URE TO B EAM
CL AS S 1M L AS ER P RO DU CT
In
Out
Active
Failure
Opt. Amp.
EDFA
Boost Amplifier
DEV 7425
EDFA Optical
Boost Amplifier
1 Optical Input
2 Active LED
3 Failure LED
4 O ptical Output
2
3
?: 15 29.. .156 5 nm
P0 : 100 m W
CW -L ase r
LA SE R RA DIA TION
AV OID EX POS URE TO B EAM
CL AS S 1M L AS ER P RO DU CT
In
Out
Active
Failure
Opt. Amp.
EDFA
Pre-Amplifier
DEV 7415
EDFA Optical
Pre-Am plifier
1 Optical Input
2 Active LED
3 Failure LED
4 O ptical Output
1
4
2
3
1
4
Selected Optribution® chassis can be equipped with EDFA optical amplifier modules
DEV 74x5.
The DEV 7415 is a pre-amplifier and the DEV 7425 is designed as a boost amplifier.
The optical connector type is SC/APC by default, but can be ordered as FC/APC
(Option 07) or as E2000 HRL (Option 08), instead.
3.1.4 Optical Splitter Modules DEV 751x
1
2
CC
1
3
4
2
C
1
2
3
5
6
7
8
4
DEV 7512
Optical Splitter
1:2
1 Optical Input
2A...
2B Optical Outputs 1...2
DEV 7514
Optical Splitter
1:4
1 O ptical Input
2A...
2D Optical Outputs 1...4
DEV 7518
Optical Splitter
1:8
1 O ptical Input
2A...
2H Optical Outputs 1...8
1
2A
2B
2C
2D
2E
2F
2G
2H
1
2A
2B
2C
2D
2A
2B
1
Optionally, an Optribution® chassis can be equipped with optical splitter modules
DEV 751x.
Optical splitter modules permit the distribution of optical signals, e.g. feeding two
(DEV 7512), four (DEV 7514), or eight (DEV 7518) different optical fibers with the
output signal of one optical transmitter module.
The optical connector type is SC/APC by default, but can be ordered as FC/APC
(Option 07) or as E2000 HRL (Option 08), instead.
Note:
The installation location of an optical splitter module depends on the available
space within the chassis.
Due to their mechanical width, the optical splitter modules DEV 7514 and
DEV 7518 cannot be installed in 1 RU Optribution® chassis.

User Manual DEV 7xxx Optribution® Modules
Copyright DEV Systemtechnik GmbH 2012-2017 11
3.1.5 Optical De-/Multiplexer Modules DEV 76xx
DEV 7612
Optical De-/M ultiplexer
1:2 CW DM
1 Optical Common Port
2A...
2B Optical Ports 1...2
DEV 7614
Optical De-/M ultiplexer
1:4 CW DM
1 Optical Common Port
2A...
2D Optical Ports 1...4
DEV 7618
Optical De-/M ultiplexer
1:8 CW DM
(with Option +Lambda0)
1 Optical Common Port
2A...
2H Optical Ports 1...8
3 Port Lambda 0 (Option)
1
2D
2C
2B
2A
1
C
DeMultiplexer
5
4
C
DeMultiplexer
5
6
4
3
C
7
8
6
5
3
4
2
1
De-/
Mux
0
DEV 7658
Optical De-/M ultiplexer
1:8 DW DM
1 Optical Common Port
2A...
2H Optical Ports 1...8
3 Extension Port
1
2H
2G
2F
2E
2D
2C
2B
2A
C
7
8
6
5
3
4
2
1
E
De-/
Mux
Channel
3
CH 17...24
1
2H
2G
2F
2E
2D
2C
2B
2A
3
2B
2A
Applied in the optical transmitter chassis of a CWDM application, an optical
multiplexer module permits the transmission of two (DEV 7612), four (DEV 7614),
eight (DEV 7618), or nine (DEV 7618 with Option +Lambda0) optical signals
generated by CWDM capable optical transmitter modules via a single fiber.
In the receiver chassis this optical signal feeds a corresponding demultiplexer
module -i.e. a second module-, consequently providing two (DEV 7612), four
(DEV 7614), eight (DEV 7618), or nine (DEV 7618 with Option +Lambda0) optical
signal outputs, which are used for the input to the optical receiver modules.
The scenario is equivalent for DWDM applications using DWDM capable optical
transmitter modules in combination with DEV 7658 DWDM de-/multiplexer
module(s) in the transmitter chassis to transmit a number of optical signals via a
single fiber. This fiber is feeding DEV 7658 DWDM de-/multiplexer module(s) in the
receiver chassis to regain the optical signals used as input for a corresponding
number of optical receivers. The DEV 7658 provides an extension port for cascading
DWDM de-/multiplexer modules and is available with different wavelength options.
For details on the wavelength options, please refer to the related spec sheet.
The optical connector type of all de-/multiplexer modules is SC/APC by default, but
can be ordered as FC/APC (Option 07) or as E2000 HRL (Option 08), instead. Each
de-/multiplexer module is delivered with the optical common port equipped with
the ordered optical connector type and the appropriate number of optical patch
cables with LC/APC connector on one side (to be connected to the de-/multiplexer
module) and the ordered optical connector type on the other side.
Note:
To realize a CWDM or a DWDM transmission, optical transmitter modules with
different wavelength options need to be applied.
The installation location of an optical de-/multiplexer module depends on the
available space within the chassis.

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3.2 Redundancy Principles
Without optical link redundancy, the RF inputs of optical transmitter modules are
made accessible in an Optribution® chassis via cabling options.
Cabling options are used for the RF outputs of optical receiver modules as well;
additionally there are offered distribution options and IRD controlled switch
options for selected Optribution® chassis.
If optical link redundancy is required in an application, 1+1 or n+1 redundancy
options can be installed in some Optribution® chassis. In the following, the principle
of both types of optical redundancy is explained.
3.2.1 1+1 Redundancy Options
1+1 redundancy options are used to realize a redundant optical link (i.e. a backup
link) to a dedicated main link per 1+1 redundancy.
An optical 1+1 redundancy consists of the 1+1 redundancy unit in the transmitter
(Tx) chassis and of the 1+1 redundancy unit in the receiver (Rx) chassis.
On the Tx side, the RF input signal is fed to the input ports of the main and of the
backup optical transmitter channel via a 1:2 passive splitter. Thus, the optical
transmission is realized via two optical fibers. On the Rx side the RF output of the
main and of the backup optical receiver channel are forming the inputs of the 2:1
redundancy switch. The output of the redundancy switch is the output of the 1+1
redundancy.
At least the Rx chassis of 1+1 redundancy units requires a CPU (module) to enable
the switching between the main channel and the backup channel. With the CPU
(module) equipped, the Optribution® chassis provides a Web Interface, SNMP, and
the capability to switch autonomously.
Dual 2:1
Switch Module
Out A
Receiver Chassis
Backup O ptical
Receiver Module A
Main O ptical
Receiver Module A
Optical
Electrical
Optical
Electrical
In A
Transmitter Chassis
Backup O ptical
Transmitter Module A
Main O ptical
Transmitter Module A
1+1 Redundancy: Normal Operation
Dual 1:2
Splitter M odule Electrical
Optical
Electrical
Optical
Out B
Backup O ptical
Receiver Module B
Main O ptical
Receiver Module B
Optical
Electrical
Optical
Electrical
In B
Backup O ptical
Transmitter Module B
Main O ptical
Transmitter Module B
Electrical
Optical
Electrical
Optical
Optical Fiber
Optical Fiber
Optical Fiber
Optical Fiber
RF Level
RF Level
RF Level
RF Level
RF Level
RF Level
RF Level
RF Level
If the 1+1 redundancy is in normal operation -i.e. the Rx redundancy unit is
switched to the main channel and the backup channel is not used (as shown for two
1+1 redundancies (A and B) in the figure above)- and if Auto Mode is activated on
the Rx side, the RF level status and the light condition detection of the main and of
the backup optical receiver channels are continuously monitored.

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There are four RF level monitoring [and light status indication] units per
redundancy unit which can be used for the monitoring of the transmission paths.
However, relevant for the autonomous switching between the main channel and
the backup channel of a 1+1 redundancy is the RF level status and the light
condition detection of the optical receiver channels.
If in normal operation the RF level of the main channel on the receiver side falls
below the defined RF threshold level [or if the light condition of the main channel
becomes "Fail"] and if the RF level of the backup channel is above the defined
RF threshold level [and if the light condition of the backup channel is "OK"], the
device operates the assigned redundancy switch, thus the transmission of the
signal is realized via the backup channel. This situation is shown in the following
figure for both 1+1 redundancies:
Out A
Receiver Chassis
Main O ptical
Receiver Module A
Optical
Electrical
Optical
Electrical
In A
Transmitter Chassis
Main O ptical
Transmitter Module A
Optical Fiber
Electrical
Optical
Electrical
Optical
Out B
Main O ptical
Receiver Module B
Optical
Electrical
Optical
Electrical
In B
Main O ptical
Transmitter Module B
Electrical
Optical
Electrical
Optical
1+1 Redundancy: Redundancy Operation
Optical Fiber
Optical Fiber
Optical Fiber
RF Level
RF Level
RF Level
RF Level
RF Level
RF Level
RF Level
RF Level
Dual 2:1
Switch Module
Backup O ptical
Receiver Module A
Backup O ptical
Transmitter Module A
Dual 1:2
Splitter M odule
Backup O ptical
Receiver Module B
Backup O ptical
Transmitter Module B
An Optribution® chassis with one or more applied 1+1 redundancy options for the
receiver side provides by default autonomous switching capability from the main
channel to the backup channel.
In combination with one or more 1+1 redundancy options for the receiver side, an
Optribution® chassis can be ordered with the automatic switch back option
(Option 28). The autonomous switching capability of the 1+1 redundancy units in
the chassis is extended with the automatic switch back functionality installed and
activated. Thus, in Auto Mode the device can switch the corresponding redundancy
unit back to normal operation if the redundancy unit is switched to the backup
channel and if the signal level on the main channel rises above the RF threshold
level again on the main channel [and if the light condition of the main channel is
"OK"]. This switching back is supported by an adjustable hysteresis (e.g. 3 dB) as an
offset value that can be configured via Web Interface.
Alternatively, for selected Optribution® chassis the main backup swap feature
(Option 22) can be ordered in combination with one or more 1+1 redundancy
options for the receiver side. Thus, the autonomous switching capability is
extended that the device in Auto Mode can switch the redundancy unit(s) back to
normal operation with the same prerequisites as the autonomous switching
capability from the main channel to the backup channel.

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Note:
Within an Optribution® chassis it is usually possible to combine a number of
optical modules with applied 1+1 redundancy options and a number of optical
modules without applied redundancy. This number of additional optical
modules depends on the available space within the chassis.
A mixture of Tx redundancy units and Rx redundancy units within one chassis is
possible.
If available for the chassis, 1+1 Rx redundancy options can be combined with
distribution options or with IRD controlled switch options.
1+1 redundancy options are not available for optical modules equipped with
two diodes for different frequency ranges (DEV 7244 & DEV 7344).
It is not possible to combine 1+1 redundancy options with n+1 redundancy
options.
3.2.1.1 "No Single Point of Failure" (NSPoF) Options
To enhance the safety of 1+1 Rx redundancy configurations, the Optribution®
chassis DEV 7113 equipped with single link Rx modules and 1+1 Rx redundancy
options can be equipped with NSPoF options in addition.
1+1 Redundancy
Switch Module Slot 1
Port A
Backup O ptical
Receiver B1
Main Optical
Receiver M1
Optical
Electrical
Optical
Electrical
Backup O ptical
Receiver B2
Main Optical
Receiver M2
Optical
Electrical
Optical
Electrical
RF Level
RF Level
RF Level
RF Level
NSPoF Redundancy
Switch Module Slot 5
Port A
Port A
First NSPoF
Splitter M odule
Second N SPoF
Splitter M odule
Port A
NSPoF Redundancy
Switch Module Slot 6
1+1 Redundancy
Switch Module Slot 2
In this case a 1+1 Rx redundancy unit is extended by an internal dual channel 1:2
NSPoF splitter module which output ports connect to (the primary channel of) two
(dual channel) 2:1 switch modules. The switch modules are commanded simulta-
neously that always the RF signal of the active channel of the 1+1 redundancy unit
is available on the primary RF port (labeled "A") of both switch modules.
The figure above illustrates the principle for two 1+1 NSPoF Rx redundancy units,
with unit 1 being in normal operation (i.e. switched to the main channel) and unit 2
being switched to the backup channel.

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Note:
NSPoF redundancy configurations provide the optimum safety for optical
transmission chains, since the components of the main channels and of the
backup channels are realized as individual and independent modules.
Only each internal dual channel 1:2 NSPoF splitter module used inside the
DEV 7113 chassis represents a passive component consisting of two locally
separated 1:2 L-Band splitters on one PCB in a single mechanical housing.
Thus, with the NSPoF option the main signal and the backup signal are routed
through the same mechanical housing.
An application scenario that would cause both splitters on this PCB (housing) to
fail at the same time does not appear feasible, since the splitters are purely
passive components; therefore, this is not considered as a critical configuration
for the NSPoF option.
3.2.2 N+1 Redundancy Options
N+1 redundancy options are used to realize a redundant optical link to a number of
main links per n+1 redundancy.
Optical
Electrical
Electrical
Optical
Redundancy Optical
Transm itter Module
Optical
Electrical
Electrical
Optical
Optical
Electrical
Electrical
Optical
Optical
Electrical
Electrical
Optical
Optical
Electrical
Electrical
Optical
Optical Transmitter Module A
Out A
Out B
Out C
Out D
In A
In B
In C
In D
Optical Transmitter Module B
Optical Transmitter Module C
Optical Transmitter Module D
Redundancy Optical
Receiver M odule
Optical Receiver Module A
Optical Receiver Module B
Optical Receiver Module C
Optical Receiver Module D
4+1 Redundancy Switch Module 4+1 Redundancy Switch Module
4+1 Redundancy: Normal Operation
Transmitter Chassis Receiver Chassis
Optical Fiber
Optical Fiber
Optical Fiber
Optical Fiber
Optical Fiber
RF Level
RF Level
RF Level
RF Level
RF LevelRF Level
RF Level
RF Level
RF Level
RF Level

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An n+1 redundancy consists of the n+1 redundancy unit in the transmitter (Tx)
chassis and of the n+1 redundancy unit in the receiver (Rx) chassis.
Both n+1 redundancy units comprise n main channels (optical transmitter channels
or optical receiver channels) and a redundancy channel (an optical Tx or Rx channel,
as well).
If an n+1 redundancy unit is in normal operation (i.e. the redundancy channel is not
used), the n RF input signals pass the Tx redundancy switching section and the
optical transmission is performed by the corresponding n Tx channels and by the
n Rx channels. After the reverse conversion, the RF signals feed the Rx redundancy
switching section in the receiver chassis.
Both sides –i.e. the n+1 redundancy unit in the Tx chassis and n+1 redundancy unit
in the Rx chassis- of n+1 redundancy configurations require a CPU (module) to
enable the switching between one of the n main channels and the redundancy
channel. With the CPU (module) equipped, both chassis provide a Web Interface,
SNMP, and the capability to switch autonomously.
To enable the autonomous switching functionality the IP address and the number
of the n+1 redundancy unit within the Tx chassis needs to be configured in the Rx
chassis of the corresponding n+1 redundancy unit. In addition both sides of the
corresponding n+1 redundancy have to be in normal operation and both (Tx and
Rx) chassis need to be switched to Auto Mode.
Here the figures show a 4+1 redundancy configuration which is the basic n+1
redundancy type based on a single 4+1 redundancy switch module (on both sides).
8+1, 12+1 and 16+1 redundancy units are realized with a number of 4+1
redundancy switch modules as well, but in combination with one or more
multiplexer modules.
The RF level status and the light condition detection of the optical receiver channels
are continuously monitored if Auto Mode is activated on both sides and if the n+1
redundancy is in normal operation.
There are 2 * (n+1) [here: 2 * (4+1) = 10] RF level monitoring [and light status
indication] units available per redundancy unit which all can be used for the
monitoring of the n+1 transmission paths. However, relevant for autonomous
switching functionality is the RF level status and the light condition detection of the
optical receiver channels.
If in normal operation the RF level of one of the n main channels on the receiver
side falls below the defined RF threshold level [or if the light condition of one of the
n main channels becomes "Fail"], it commands the transmitter side to switch this
channel to the redundancy channel. While switching, the redundancy transmitter
channel takes over the available (!) settings of this main transmitter channel, i.e.
the RF threshold level setting, possibly the state of the LNB power (on/off) with the
related current monitoring interval settings, and possibly the gain mode and the
corresponding level settings. Not transferred are the settings for surveillance
enable and (if applicable) for bias button enable.
After the transmitter side has switched, the receiver side checks the RF level [and
the light condition] of the redundancy channel. If the RF level is above the defined
RF threshold level [and if the light condition is "OK"], the receiver side switches the
failing channel to the redundancy channel on the receiver side as well. While
switching, the redundancy receiver channel takes over the available (!) settings of

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this main receiver channel, i.e. the RF threshold level setting and possibly the slope
(or tilt) and/or the gain setting(s). If gain control is available, the RGC (Redundancy
path Gain Compensation) functionality becomes active in addition. Not transferred
is the setting for surveillance enable.
All in all, this is the regular redundancy case for any defective main channel within
the n+1 redundancy.
Optical
Electrical
Electrical
Optical
Redundancy Optical
Transm itter Module
Optical
Electrical
Electrical
Optical
Optical
Electrical
Electrical
Optical
Optical
Electrical
Electrical
Optical
Optical
Electrical
Electrical
Optical
Optical Transmitter Module A
Out A
Out B
Out C
Out D
In A
In B
In C
In D
Optical Transmitter Module B
Optical Transmitter Module C
Optical Transmitter Module D
Redundancy Optical
Receiver M odule
Optical Receiver Module A
Optical Receiver Module B
Optical Receiver Module C
Optical Receiver Module D
4+1 Redundancy Switch Module 4+1 Redundancy Switch Module
4+1 Redundancy: Redundancy Operation Channel C
Transmitter Chassis Receiver Chassis
Optical Fiber
Optical Fiber
Optical Fiber
Optical Fiber
Optical Fiber
RF Level
RF Level
RF Level
RF Level
RF LevelRF Level
RF Level
RF Level
RF Level
RF Level
If the RF level of the redundancy channel is below the defined RF threshold level [or
if the light condition of the redundancy channel is "Fail"] after the transmitter side
has switched, it is assumed that there is no electrical RF input signal available at the
corresponding main channel on the transmitter side [or the optical transmission of
the redundancy channel is detected as being defective]. Thus, the receiver side
commands the transmitter side to switch back to normal operation and this main
channel is excluded then from further autonomous switching control. The main
channel is considered valid for autonomous switching again as soon as a valid
RF signal [and the light condition being "OK"] is detected on the receiver side
(meaning, that the optical transmission is detected as "OK" and that an RF signal is
applied at the main channel on the transmitter side again). With this logic, all
components of the transmission path between the electrical switches on the
transmitter side and on the receiver side are checked.

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Note that in a regular redundancy case -the signal transmission of a main channel is
realized via the redundancy channel- there is no automatic return to normal
operation. The switching back to normal operation (on both sides) has to be
performed in Local Mode via Web Interface or in Remote Mode via SNMP.
Note:
Depending on the type of Optribution® chassis, one or more n+1 redundancy
options can be installed. Also the size of the redundancy unit(s) (4+1…16+1)
which can be applied depends on the type of chassis.
In addition to the installation of n+1 redundancy option(s) within an
Optribution® chassis it is usually possible to install a number of additional
optical modules without applied redundancy. This number of additional optical
modules depends on the available space within the chassis.
If available for the chassis, an n+1 redundancy option on the receiver side can
be combined with distribution options or with IRD controlled switch options.
N+1 redundancy options are not available for 1 RU Optribution® chassis and for
chassis that do not provide a CPU (module).
N+1 redundancy options are not available for optical modules equipped with
two diodes for different frequency ranges (DEV 7244 & DEV 7344).
It is not possible to combine n+1 redundancy options with 1+1 redundancy
options.
4Installation Instructions
4.1 Scope of Delivery
Please refer to the corresponding Optribution® chassis user manual for the scope of
delivery.
4.2 Installation of the Product
For the installation of the Optribution® chassis and for the installation and the
exchange of optical modules, please refer to the corresponding Optribution®
chassis user manual.
4.3 Device Factory Settings
The factory settings for the specifics of the applied Optribution® chassis are subject
of the corresponding Optribution® chassis user manual. Here, the factory settings
for the optical modules are described.
4.3.1 Factory Settings for the Optical Modules
All optical transmitter modules or optical receiver modules provide RF level
monitoring functionality, i.e. the aggregated power level of the RF signal is
measured and compared with an RF threshold level. If the signal level is below the
threshold level, an event is generated. This, for instance, enables an Optribution®
chassis with applied redundancy switching functionality to control the switching
autonomously. The factory setting for the RF threshold level is:
RF threshold level: (20 dB above lower limit)

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For example, if the lower limit is -50 dBm, the factory setting for the RF threshold
level is -30 dBm. The RF threshold level can be adjusted via the Web Interface or
via SNMP –given that the Optribution® chassis provides these features- in a range
that depends on the applied module.
Some optical transmitter modules are capable of providing LNB power at the
RF input. With the current monitoring functionality, the current delivered by the
RF input is monitored. If the measured current exceeds the defined monitoring
interval, an event is generated. The factory settings for the current monitoring
interval are:
Lower Limit: 100 mA
Upper Limit: 350 mA
The lower and the upper limit of the current monitoring interval can be adjusted via
the Web interface or via SNMP -given that the Optribution® chassis provides these
features- in a range that depends on the applied module.
Note:
Some modules provide additional functionality, e.g. gain and/or slope control
and may provide operational elements (a potentiometer or buttons) to make
the adjustments locally at the module; alternatively (or exclusively) changes on
the settings may be performed via Web Interface or via SNMP.
The factory settings for these parameters are application-specific.
If the Optribution® chassis is equipped with EDFA optical amplifier module(s),
the factory settings are:
(Manual) Gain: 0 dB
Operation/Gain Mode: mute
Automatic Output Power Setpoint: 0 dBm
Input Power Limit/Threshold: (lower limit of the interval, e.g. -3 dBm)
Note that (Manual) Gain is supported only by selected EDFA, and that the
factory default setting for Input Power Limit/Threshold depends on the
capabilities of the applied EDFA.
For Optribution® chassis that are not equipped with a CPU (module) it is
possible to alter the factory settings of optical modules according to the
requirements of the specific application before the delivery, please contact
DEV Systemtechnik.
Note that if an exchange module is inserted in a slot of an Optribution® chassis
with applied CPU (module), the new module inherits the stored settings of this
slot.
5Operation of the Product
The operational elements (potentiometer, push buttons) and the indicators (LEDs)
of the several optical modules were described in chapter 3.1. Please refer to the
related Optribution® chassis user manual for the general perspective on the
operation of Optribution® products.

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6Event Indication
In chapter 3.1 the event indication via the LEDs of the several optical modules was
described, please refer to the corresponding chapter in the Optribution® chassis
user manual for other subjects related to the event indication.
7Technical Data and Options
The technical data and the options of the various optical modules are stated in
different spec sheets; please refer to www.dev-systemtechnik.com.
8Conformance Declarations
8.1 Certificate of Conformance
Since DEV Systemtechnik develops and produces in Germany, the Certificate of
Conformance for each product or product series is to be issued in German
(as stated on the next page).
For the ease of comprehension, the harmonized standards that were taken into
consideration during development and production are listed here in English:
DIN EN 50083-2:2016-03 Cable networks for television signals, sound signals and interactive services -
Part 2: Electromagnetic compatibility for equipment;
German version EN 50083-2:2012 + A1:2015
DIN EN 55022:2011-12 Information technology equipment - Radio disturbance characteristics -
Limits and methods of measurement
(CISPR 22:2008, modified); German version EN 55022:2010
DIN EN 55024:2016-05 Information technology equipment - Immunity characteristics -
Limits and methods of measurement
(CISPR 24:2010 + Cor.:2011 + A1:2015); German version EN 55024:2010 + A1:2015
DIN EN 61000-3-2:2015-03 Electromagnetic compatibility (EMC) - Part 3-2: Limits -
Limits for harmonic current emissions (equipment input current ≤ 16 A per phase)
(IEC 61000-3-2:2014); German version EN 61000-3-2:2014
DIN EN 61000-3-3:2014-03 Electromagnetic compatibility (EMC) - Part 3-3: Limits -
Limitation of voltage changes, voltage fluctuations, and flicker in public low-voltage
supply systems, for equipment with rated current ≤16 A per phase and not subject to
conditional connection
(IEC 61000-3-3:2013); German version EN 61000-3-3:2013
DIN EN 62368-1:2016-05 Audio/video, information and communication technology equipment -
Part 1: Safety requirements
(IEC 62368-1:2014, modified + Cor.:2015);
German version EN 62368-1:2014 + AC:2015