Blankom STR 821 User manual

Operating instructions
Professional Headend Solutions
Contents
1. Safety and operating instructions .................................................................2
2. Device variants ..............................................................................................2
3. General ..........................................................................................................2
4. Front view ......................................................................................................3
5. Functional description....................................................................................3
6. Adjustments .............. ....................................................................................3
6.1 Adjustment with the Headend Controller ..................................................3
6.2 Adjustment with the PC/ laptop ................................................................3
7. Meaning of the status LED`s on front panel .................................................4
8. Programming by web server .........................................................................4
8.1 Main menu ................................................................................................4
8.2 Loading the programme list .....................................................................5
8.3 Extended settings .....................................................................................6
8.4 Factory settings .........................................................................................6
8.5 Configuration of SAT input channel 2 .......................................................6
8.6 Configuration of static RDS ......................................................................7
8.7 Status of the device ..................................................................................7
8.8 Software overview .....................................................................................8
9. Manual menu control at the Headend Controller .........................................9
10. Trap messages ............................................................................................10
11. Block diagram ....... ......................................................................................10
12. Head end bus structure ...............................................................................11
13. Application example..................................................................................... 11
14. Technical data ............ .................................................................................12
15. Bibliography ............ ....................................................................................12
16. Glossary ....................... ...............................................................................13
17. Document history ........................................................................................13
STR 821
Part No: 9085.01
SAT-AUDIO Transmodulator
2 x DVB-S (QPSK) →6 x FM

2
STR 821
Part No: 9085.01
SAT-AUDIO Transmodulator
2 x DVB-S (QPSK) →6 x FM
B
LINE
1. Safety and operating instructions
When assembling, starting-up and adjusting the modules, it is necessary to consider the system specific
references in the manual instruction!
The modules may only be installed and started up by authorized technical personnel!
When assembling the modules into the receiving points, the adherence of the EMC regulations is to be secured!
The assembly and wiring have to be done without voltage!
All active modules may only be operated with the Headend Controller HCB x00 or Bus Extender BEB x00!
The main voltage and the operating voltage of the modules working by DC have to be in complience to the operating para-
meters described in the technical data.
With all work the defaults of the DIN EN 50083 have to be considered! Especially the safetyrelevant execution of the
DIN EN 60728-11 [3] is necessary!
2. Device variants
STR 821 9085.01 2 x DVB-S(QPSK) →6 x FM [87,5 ... 108 MHz]
Minimum software requirements for HCB x00:
9650.03: version 2.34*
9650.04/.05: version 3.19*
9652.01: version 3.23*
*) updates: www.blankom.de
3. General
The SAT-Audio transmodulator STR 821 is a module of the head end system B-LINE, which is conceived as a complete system for
middle sized networks. The STR 821 makes it possible to produce up to 6 radio programmes coded as MPEG2 from two DVB-S trans-
port streams in the FM range.
All the components are programmed via a central control unit and will function independently thereafter. The status of the modules are
displayed via LED’s (see chapter 7 „Meaning of the status LED`s on front panel “).

3
STR 821
Part No: 9085.01
SAT-AUDIO Transmodulator
2 x DVB-S (QPSK) →6 x FM
B
LINE
The manual instructions of the Headend Controller HCB x00 and the Bus Extender BEB x00 have to be considered!
4. Front view
5. Functional description
The transport streams (TS) passed on by the input section are processed on entering the system. The SI data are extracted and sent
on to the control system so that the services to be decoded can be displayed and selected. At the same time, the audio streams
to be decoded are filtered out of the transport streams, as are the RDS data, and these are passed to the DSP. The DSP decodes
the MPEG data streams which it receives. The RDS data received from the TS processing stage and are sent on, together with the
decoded MPEG data streams, to the FPGA of the modulator. 6 complete FM modulators for VHF are implemented in the FPGA. The
audio signals are subjected to 19-kHz filtering in these. Next comes the stereo processing: the audio signals are added or subtracted
and are modulated to match the 38-kHz carrier; to the audio signal a 19-kHz pilot tone and the RDS data are added. The MPX signal
produced in this way is then modulated by FM. The FM signals are combined and passed through a D/A converter. They are then
available either via a directional coupler or, simply, direct at the component output port. Each FM channel produced can be configu-
red individually and independently of the others. The 12-V-LNC-remote power supply is switchable for both SAT-inputs at the same
time (see chapter 8.3).
6. Adjustments
6.1 Adjustment with the Headend Controller
· Adjustment of the addresses at the Bus Extender BEB x00 and at the modules
· Activation of the programming mode on each module by selecting the line (BEB x00) and the module position (01... 15) at
the Headend Controller(HCB x00)
→ yellow LED illuminates until the beginning of the parameter adjustment
· Adjustment of the STR 821 parameters (see chapter 9)
→green LED is switched on
· After the programming the STR 821 will be automatically switched into the operating mode
→yellow LED flashes shortly/ green LED is switched on
6.2 Adjustment with the PC/ laptop
· Prerequisite for the remote programming is an “online-connection” according the IP standard and an ethernet connection at the
PC/ laptop
· Adjustment of the line/ position addresses at the Bus Extender BEB x00 as well as at the modules
· At the Headend Controller HCB x00 input IP address (e.g. 192.168.001.001)
· For “direct connection” between a PC and HCB x00 use crossover cable (RJ 45)
· For connection over a HUB use a normal straight throught patch cable
· Start-up HTML browser and put in IP address as target address
· If connected correctly the web interface will be opened on the pc and a blue LED (LINK) at the HCB x00 will be lit up.
· All adjustments of the modules are specified on the web interface.
SAT IF input coupler ”input”
SAT IF input coupler ”output”
Operating voltage/
control bus
LED ”STANDBY” (red)
LED ”READY1” (green)
LED ”READY2” (green)
LED ”ADDR.” (yellow)
Address selector
Output coupler ”input”
Output coupler ”output”
BLINE
SAT-AUDIO TRANSMODULATOR
2 x DVB-S (QPSK) 6 x FM
Type: Part No :STR 821 9085.01
SAT-IF IN 950 ... 2150 MHz
INPUT LEVEL 52 ... 92 dBµV
FM
SUPPLY CURRENT 0.85 A
OUT 87.5 ... 108 MHz
OUTPUT LEVEL max. 6 x 110 dBµV
X1
SAT-AUDIO TRANSMODULATOR
2 x DVB-S (QPSK) 6 x FM
Type: STR 821 Part No.: 9085.01
SAT-IF IN 950...2150 MHz
INPUT LEVEL 52...92 dBµV
FM OUT 87.5...108 MHz
OUTPUT LEVEL max. 6 x 110 dBµV
SUPPLY CURRENT 0.85 A

4
STR 821
Part No: 9085.01
SAT-AUDIO Transmodulator
2 x DVB-S (QPSK) →6 x FM
B
LINE
7. Meaning of the status LED`s on front panel
Designation (Colour) Status Meaning of display
STANDBY (red) permanently on Module is in standby
flashing Module faulty (hardware)
READY 1 (green) permanently on Module working (SAT input 1), everything ok
flashing Error warnings depending on signal:
- Tuner without sync (e.g. when there is no input signal)
- at least one of the adjusted Audio-PID`s can not be decoded
READY 2 (green) permanently on Module working, (SAT input 2), everything ok
flashing Error warnings depending on signal:
- Tuner without sync (e.g. when there is no input signal)
- at least one of the adjusted Audio-PID`s can not be decoded
off SAT input channel 2 off
ADDR (yellow) illuminated/ flashing remote control connection/ data being exchanged
8. Programming by web server*
8.1 Main menu
Description Module name, editable (max. 30 characters)
Input channel displays the respective SAT channel (1 or 2)
SAT-IF adjustment range: 950 … 2150 MHz
QPSK-Symbol rate adjustment range: 1000 … 45000 kSps
FEC selection: auto, 1/2, 2/3, 3/4, 5/6, 7/8
Status displays whether SYNChronization or noSYNChronization with input
Input channel 2 configuration button for SAT input channel 2 (see menu 5)
*For further details see the HCB manual

5
STR 821
Part No: 9085.01
SAT-AUDIO Transmodulator
2 x DVB-S (QPSK) →6 x FM
B
LINE
FM-Channel displays the adjustments of the FM output channel (1..6)
Channel name programme name of the respective FM channel, editable (max 25 characters)
Program settings
Program listing loading of the list with available programmes with pre-selection: all programmes or only radio-
programmes (see menu 2)
Input channel selection: 1/ 2
Audio PID Audio PID of the programme, adjustment range: 0 … 16383
FM-Output
RF-Signal selection: On/ Off
Output frequency adjustment range: 87500 ... 108000 kHz
RF Level correction adjustment range: +3 …-3 dB in 0.5-dB steps (per channel)
Output attenuation adjustment range: 0 … 31 dB in 1-dB steps (module)
RF-Output mode selection: loop/ only output
Audio settings
Audio mode selection: Mono/ Mono1/ Mono2/ Stereo/ Auto
Audio gain adjustment range: +6 ... -10 dB in 0.5-dB steps
RDS-Settings
Data source/ mode selection: RDS-PID/ Audio-PID/ Static/ Off
RDS-PID adjustment range: 0 … 16383
Routing to the adjustment menu: configuration static RDS (see menu 6)
Operating status selection: On/ Off/ reset
SNMP-Trap messages selection: On/ Off, if SNMP option in HCB x00 enabled, otherwise „locked“ displays
Factory settings setting the default values (see menu 4)
Routing to the respective adjustment menus:
Extended settings see menu 3
Status see menu 7
Software versions see menu 8
8.2 Load programme list (menu 2)
In this menu, all of the input stream
contained services are listed. Depen-
ding on the preselection only radio-
services or all services appear. For
every of the 6 FM channels a service
can be choosen. The assumption/
settings of the services occurs by
pressing the “Transmit” button.

6
STR 821
Part No: 9085.01
SAT-AUDIO Transmodulator
2 x DVB-S (QPSK) →6 x FM
B
LINE
8.3 Extended settings (menu 3)
Input
LNB-Power selection: On/ Off (for both channels)
FM-Channel displays the adjustments of the FM-channels (1...6)
Preemphasis selection: 50 µs/ 75 µs/ Off
Modulation settings
Pilot Signal selection: On/ Off
Pilot deviation correction adjustment range: +2 ... -2 kHz in 0.1-kHz-steps
RDS-Signal selection: On/ Off
RDS-Deviation correction adjustment range: +2 ... -2 kHz in 0.1-kHz-steps
8.4 Factory settings (menu 4)
When this menu item is requested, at first a security query whether it really set all
parameters to the factory default settings pops up.
Affirming the query, all settings stored in the EEPROM will be deleted and re-
placed by the default settings. The module will go back to these default values.
Once the setting process is over, there will be an automatic return to the main
menu. It takes about one minute.
8.5 Configuration of SAT Input channel 2 (menu 5)
In this menu the SAT input channel 2 can be set on or off.

7
STR 821
Part No: 9085.01
SAT-AUDIO Transmodulator
2 x DVB-S (QPSK) →6 x FM
B
LINE
8.6 Configuration of static RDS (menu 6)
FM-Channel displays the settings for the FM output channel(s) (1 to 6)
Output frequency displays the frequencies set for the FM channel (in kHz)
Audio PID shows the audio PID of the selected service
PI-Code adjustment range: 0000 … FFFF (hexadecimally)*
PS-Name 8 characters of the name of the transmitted programme or service
Radio text max. 64 characters, which can be transmitted statically
PTY-Code selection of the programme type
EON selection: On/ Off
M/S-Code selection: music/ language
DI-Code decoder identification control code, entered decimally. Default setting: 1 (stereo)
TP-Signal selection: On/ Off
TA-Signal selection: On/ Off
CT-Signal selection: On/ Off
UTC-Time displays the UTC time transmitted in the RDS
Local Time offset relection + 12 ... - 12 h input of the offset between local and UTC time
CEST-Correction enable/ disable automatic CEST correction
*The current list of PI codes for German radio broadcasters can be found on the following website:
www.irt.de./de/themengebiete/digitaler-hoerfunk/radio-daten-system-rds.html
8.7 Device status (menu 7)

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STR 821
Part No: 9085.01
SAT-AUDIO Transmodulator
2 x DVB-S (QPSK) →6 x FM
B
LINE
Input channel displays the respective SAT channel (1 or 2)
Status status of synchronization
Input frequency offset tolerance of the pre-setted input frequency (in MHz)
Signal reserve displays in dB
BER displays the bit error ratio
TS-ID displays the TS-ID
FM-Channel displays the details for the FM output channel(s) (1 to 6)
Output frequency displays in kHz
Audio status audio status informations
dynamically RDS data
PI-Code displays the sender‘s PI code as contained in the data stream
PS-Name displays the service name as contained in the data stream
Radio text displays the radio text as contained in the data stream
Information
Error memory displays the errors arising in internal communication between the controllers
Temperature temperature of the front circuit board
Device number displays the device number
Device index displays the device index
8.8 Software overview (menu 8)
Name of device, item number, address in head end
Software versions
displays the software versions for the controllers as follows:
Controller of the front circuit board
Transport stream manager
Boot controller of the FM modulator FPGA
FM modulator FPGA
RDS encoder
MPEG decoder

9
STR 821
Part No: 9085.01
SAT-AUDIO Transmodulator
2 x DVB-S (QPSK) →6 x FM
B
LINE
9. Manual menu control at the Headend Controller (HCB x00)
STR 821-start
Edit or end
Power Status On/ Reset/ Off
SAT input 2 On/ Off
SAT IF 1 950...2150 MHz
QPSK symbol rate 1 1000...45000 kSps
FEC 1 auto, 1/2, 2/3, 3/4, 5/6, 7/8
SAT IF 2 950...2150 MHz
QPSK symbol rate 2 1000...45000 kSps
FEC 2 auto, 1/2, 2/3, 3/4, 5/6, 7/8
RF output
RF operation mode only output/ loop through
Attenuation 0...31 dB
Settings Preemphasis/ Modulation
Preemphasis 50 µs/ 75 µs/ Off
Pilot signal On/ Off
Pilot deviation correction +2...-2 kHz
RDS signal On/ Off
RDS deviation correction +2...-2 kHz
STR 821-end
Description
Channel 1...6 or end
Programme settings
Channel name max. 25 characters
SAT TS source 1/ 2
Audio PID 0...16383
FM output
RF output On/ Off
Output frequency 87500...108000 kHz
RF level correction +3...-3 dB
Audio settings
Audio mode mono/ mono1/ mono2/ stereo/ auto
Audio amplification +6...-10 dB
RDS settings
RDS mode/ source RDS PID/ Audio PID/ Static/ Off
RDS PID 0...16383
RDS PI Code 0x0000...0xFFFF
RDS PS Name (8 characters)
RDS PTY Code (selection)
RDS TP Signal On/ Off
RDS TA Signal On/ Off
RDS M/S Signal music/ speech
RDS DI Code
RDS EON On/ Off
RDS CT Signal On/ Off
SAT IF input
LNB power On/ Off
Time settings
Time offset +12 ... -12 h
CEST correction On/ Off

10
STR 821
Part No: 9085.01
SAT-AUDIO Transmodulator
2 x DVB-S (QPSK) →6 x FM
B
LINE
10. Trap messages
Item Message Type Explanation
01 Signal OK INFORMATION Module works correctly.
02 Input not sync WARNING Input is not synchronized.
03 MPEG: Open Error CRITICAL Access error MPEG decoder
04 System reset WARNING Reset after internal error
05 MPEG-Decoder not sync WARNING MPEG decoder is not synchronized.
06 Power fail CRITICAL Error on supply voltage
07 MPEG-Decoder sync INFORMATION MPEG decoder is synchronized.
08 ATMEGA: Open Error CRITICAL Access error FM boot controller
09 NIOS: Open Error CRITICAL Access error RDS encoder
11. Block diagram

11
STR 821
Part No: 9085.01
SAT-AUDIO Transmodulator
2 x DVB-S (QPSK) →6 x FM
B
LINE
12. Head end bus structure
13. Application example
HCB x00
Headend
Controller
BEB x00
Bus Extender
Modul
signal processing
unit
HCB x00
Module
ADDR. 15
BEB x00
ADDR. 01
BEB x00
ADDR. 02
BEB x00
ADDR. 15
Module
ADDR. 01
Module
ADDR. 01
Module
ADDR. 01
Module
ADDR. 15
Module
ADDR. 15
The number of the possible module connections (00 ... 15) to a
BEB x00 depends on the total power consumption of this line!

12
STR 821
Part No: 9085.01
SAT-AUDIO Transmodulator
2 x DVB-S (QPSK) →6 x FM
B
LINE
14. Technical data
SAT IF input
Frequency range 950 … 2150 MHz
Frequency step 1 MHz
AFC range ± 3 MHz
AGC level range 52 … 92 dBµV
Connector F socket
Impedance 75 Ω
Through loss ≤ 1.5 dB
LNB remote power supply 12 V/ 400 mA, switchable
QPSK demodulator/ decoder
Symbol rate 1 … 45 MSps
Code rate 1/2, 2/3, 3/4, 5/6, 7/8
Roll off 35 %
Signal processing EN 300 421 (DVB - S) [1]
FM modulator/ FM output
Max. FM deviation 75 kHz
LF level range (deviation correction) -10 … +6 dB
Frequency range 87.5 … 108 MHz
Frequency step 50 kHz
Output impendance 75 Ω
Output return loss > 16 dB
Amplitude response 40 Hz...15 kHz,
reference 400 Hz, preemph. 50 µs < ± 0.5 dB
Rejection of modulation frequen-
cies between 18.9…19.1 kHz
and 23…100 kHz > 40 dB
Total harmonic distortion between
40 Hz…15 kHz bei 40 kHz Hub > 66 dB at 400 Hz
40 Hz…15 kHz bei 75 kHz Hub > 60 dB at 400 Hz
Difference-tone-attenuation D2 between
40 Hz…15 kHz > 70 dB
SNR weighted
(pre- and deemphase 50 µs, R, L) > 66 dB (Quasi-Peak-
Detector, CCIR weighted)
SNR unweighted
(pre- and deemphase 50 µs, R, L) > 72 dB (Quasi-Peak-
Detector, CCIR unweighted)
Cross-talk attenuation in range
40 Hz…100 Hz > 38 dB (- 26 dBFS)
100 Hz…15 kHz > 40 dB (- 26 dBFS)
Output frequency inaccuracy after
24 hours on 25 °C < ± 2 kHz
Temperature depended
frequency inaccuracy < ± 2 kHz
Spurios between
47…87.5 MHz and 111…862 MHz ≥ 64 dB
87.5…111 MHz ≥ 60 dB
Frequency error ≤ 3 kHz
Output level (switchable)
direct output (w/o direct. coupler) max. 6 x 110 dBµV
with directional coupler max. 6 x 100 dBµV
Total level 1 dB (0 … 31 dB)
Individual level 0.5 dB (± 3 dB)
Connector F socket
Stereo coder
Processing Multiplex, CCIR
Deviation pilot 6.7 kHz
RDS coder
Processing EN 62106:2001 [2]
Deviation 2.4 kHz
Supported services PS, PTY, TP, TA, EON,
PI, RT, MS, CT, DI
Operating parameters
Current/ voltage 12 V (± 0.2 V)/ 850 mA
(without LNB feed)
Residual ripple of ≤ 10 mVpp
supply voltage
Enviromental conditions
Temperature range -10 ... +55 °C
Temperature range
for data keeping 5 ... 45 °C
Relative humidity ≤ 80 % (non condensing)
Method of mounting vertical
Location of mounting splash-proof and
drip-proof
Miscellaneous
Dimensions (l x w x h)
without 19” adapter 50 x 276 x 148 mm
with 19” adapter 50 x 301 x 148 mm
Weight 1,200 g
Delivery content
1 x Bus connector
3 x F connecting cable 140 mm
15. Bibliography
[1] EN 300 421 : Digital Video Broadcasting (DVB); Framing structure, channel coding and modulation for 11/12 GHz
satellite services
[2] EN 62106:2001 : Specification of the radio data system (RDS) for VHF/ FM sound broadcasting in the frequency
range from 87.5 to 108.0 MHz (IEC 62106:2000); German version
[3] EN 60728-11: Cable network for television signals, sound signals and interactive services Part 11: safety
(IEC 607278-11: 2005). German version EN 60728-11: 2005
[4] RFC 1157 Request for Comments (RFC): RFC Database; url: http://www.rfc-editor.org/rfc.html

13
STR 821
Part No: 9085.01
SAT-AUDIO Transmodulator
2 x DVB-S (QPSK) →6 x FM
B
LINE
16. Glossary
AFC Automatic Frequency Control
AGC Automatic Gain Control
AM Amplitude modulation
AP Anschlussplatte (front circuit board)
ASI Asynchronus Serial Interface
ATV Analog Television
AV Audio/ Video
BER Bit Error Ratio
CCIR Comité Consultatif International Radiocommunication
CEST Central European Summer Time
CT Clock Time
C/N Carrier to Noise ratio
D/A Digital/ Analog
DI Decoder-Identifications-Control code
DSP Digital Signal Prozessor
DVB Digital Video Broadcasting (-C Cable, -S Satellite, -S2 Satellite 2, -T Terrestial)
EON Enhanced Other Network
ETSI European Telecommunications Standards Institute
FIFO First In–First Out
FM Frequency modulation
FPGA Field Programmable Gate Array
HTTP Hypertext Transfer Protocol
ID Identifier
IIC Inter-Integrated Circuit
IP Internet Protocol
LED Light Emitting Diode
LNB low-noise block converter
MC Microcontroller
MIB Management Information Base
MPEG Moving Picture Experts Group
MS Music/ Speech
NIM Network Interface Module
PCR Program Clock Reference
PI Programm Identification
PID Program Identifier
PLL Phase Locked Loop
PMT Program Map Table
RDS Radio Data System
PS Program Service Name
PTY Program Type
QPSK Quadrature Phase Shift Keying
RF Radio Frequency
RT Radio Text
SNMP Single Network Management Protocol
SPI Serial Peripheral Interface
SPTS Single Program Transport Stream
TA Traffic Announcement
TP Traffic Program
TS Transport Stream
UTC Universal Time Coordinated
VPS Video Programming System
17. Document history
Version Date Modification Author
1.00 28.10.2008 Basic document Häußer, Poch
1.01 24.11.2009 Revision Häußer
Options available upon request! Subjects to changes due to technical progress.
BLANKOM Antennentechnik GmbH
Hermann-Petersilge-Straße 1 • 07422 Bad Blankenburg • Germany • Telefon [phone] / 60-0 • Fax [phone] / 60-100

14
Declaration of Conformity
The Manufacturer
BLANKOM Antennentechnik GmbH ∙ Hermann-Petersilge-Str. 1 ∙ 07422 Bad Blankenburg ∙ Germany
herewith declares the conformity of the product
Product name: SAT-AUDIO Transmodulator
Type: STR 821
Product number: 9085.01
according to the following regulations
EN 50083-2
EN 60728-11 (as far as relevant)
and additional device-specific regulations, enclosed above, which this product is subjected to.
Date: 03.11.2009
Signature:
(Managing Director)