Blankom VMA 191 User manual

Professional Headend Solutions
Device manual
VMA 191
Part No: 9228.8x/ .9x
Audio/ Video Modulator
A/V →ATV (AM)

2
VMA 191
Part No: 9228.8x/ .9x
Audio/ Video Modulator
A/V →ATV (AM)
ALINE
Contents
1. Safety and operating instructions ..........................................................................................................3
2. Device variants .......................................................................................................................................3
3. General ................................................................................................................................................... 3
4. Functional description............................................................................................................................. 3
5. Explanation of the operating elements ...................................................................................................4
5.1 Front view .......................................................................................................................................4
5.2 Meaning of the LED signals............................................................................................................4
5.3 Front panel keypad and tuning wheel............................................................................................4
5.4 Rear view ....... ................................................................................................................................5
5.5 9-pin D-SUB connector configuration (alarm contact)................................................................... 5
5.6 Audio socket...................................................................................................................................5
5.7 Factory settings ..............................................................................................................................6
6. Programming by web server...................................................................................................................6
6.1 Network connection to computer...................................................................................................6
6.2 Device status .................................................................................................................................. 7
6.3 Standard settings............................................................................................................................7
6.4 Extended settings ........................................................................................................................... 8
6.5 Software overview...........................................................................................................................8
6.6 IP network .....................................................................................................................................9
7. SNMP management..............................................................................................................................10
7.1 Download MIB ..............................................................................................................................10
7.2 Trap messages ............................................................................................................................. 10
8. Menu structure of display handling....................................................................................................... 11
9. Block diagram .... .................................................................................................................................. 12
10. Technical data .. .................................................................................................................................. 12
11. Glossary ............ .................................................................................................................................13
12. Bibliography ..... ..................................................................................................................................13
13. Document history ...............................................................................................................................13

3
VMA 191
Part No: 9228.8x/ .9x
Audio/ Video Modulator
A/V →ATV (AM)
A
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!
With all work the defaults of the DIN EN 50083 have to be considered! Especially the safety relevant execution of the
DIN EN 60728-11 [1] is necessary!
The devices come under protection classification I. It is absolutely necessary, therefore, to insert the mains plug into a
socket with protective contact
2. Device variants
VMA 191 9228.82 A/V →IFI → ATV (AM) Norm B/G
VMA 191 9228.85 A/V →IFI → ATV (AM) Norm M
VMA 191 9228.91 A/V →IFI → ATV (AM) Norm D/K 1*
VMA 191 9228.92 A/V →IFI → ATV (AM) Norm D/K 2*
VMA 191 9228.94 A/V →IFI → ATV (AM) Norm D/K 4*
* D/K 1: standard D/K with sound carrier 6.5 MHz and 6.25 MHz
D/K 2: standard D/K with sound carrier 6.5 MHz and 5.74 MHz
D/K 4: standard D/K with sound carrier 6.5 MHz
3. General
The Audio/ Video Modulator VMA 191 is a module of the head end system A-LINE which is conceived as a complete system for
big and middle-sized networks. The VMA 191 generates an analogue TV signal in whole cable frequency range.
4. Functional description
The video processing contains a video low pass with a sound trap, a group delay-pre-equalization, clamping circuit and a
switchable video AGC. The video AGC function requests one white pulse per field in any line within the source signal (white level
adjustment control); alternatively AGC has to be deactivated. The magnitude of the residual carrier is determined by video ampli-
tude of the input signal in this case. The audio processing contains a symmetric input amplifier, an audio low pass, a level setting
element and a switchable audio summing unit in the 9228.85 respectively a switchable stereo/ dual tone-coder otherwise. These
unit respectivly coder allows remote accesses manually, VPS controlled or via corresponding contacts into the audio socket
(see chapter 5.6). There is the possibility to configure an asymmetric audio input. An electronically switch connects pin 4 and 5
inside the device on ground. Analog video and audio signals are fed to separate modulators and summarized at IF mixer. After IF
filtering follows the conversion in the wanted output channel by the help of a duplex frequency conversion. The operation of high
level mixers and fractional N-PLL‘s assure a high output performance. The output channel is free adjustable between 45…862
MHz. The modulator is adjacent channel fitted. For level error reporting a reference level is generated internally and is compared
with current value permanently. After each programming of the level and/or frequency values an automatic measurement of the
reference level takes place. The monitoring of the input signal is done at the output of the VMA 191. If the IF loop is activated the
IF input is weighted.
The integrated management unit consists of the data interface for PC/LAN/WAN (IP/ Ethernet interface / RJ 45). The management
of the module can be done via PC/Laptop (see programming). The status of the module will displayed with LEDs (see section 5.2
”Meaning of the LED signals”). The IP address of each device can be edited and adjusted to the respective LAN.

4
VMA 191
Part No: 9228.8x/ .9x
Audio/ Video Modulator
A/V →ATV (AM)
ALINE
5. Explanation of the operating elements
5.1 Front view
5.2 Meaning of the LED Signals
Designation (Colour) Status Meaning of display
POWER (green) permanently on Device is ready for working
off Device is off, without current supply
STATUS (green) permanently on Device working properly
off RF output is deactivated
SYNC. (green) permanently on Video input is ok
flashing Video input is not ok (e.g. in case of missing input signal)
ERROR (red) permanently on Device is in standby
flashing Device is faulty (hardware error)
5.3 Front panel keypad and tuning wheel
By activating the ESCAPE-Pad you exit the current menu cycle. The input function switches back to the inacti-
ve status and jumps to the status information (Start display)
By activating the BACK-Pad you leave the current mode (Menu selection) without any acceptance of settings
or adjustments. The cursor jumps one menu level higher.
Pressing of the tuning wheel is equivalent to the ENTER-Function.
The cursor switches to the active mode. Tuning the wheel right or left enables to select an menu entry, the
menu selection will be confirmed by pressing the wheel.
Each parameter function can be edited by pressing the tuning wheel (ENTER). By tuning the wheel you can
position the cursor to the desired selection. By pressing the tuning wheel (ENTER) you switch to the Edit-
mode. The text- and/or number positions can be individually selected by tuning the wheel. Pressing the wheel
(ENTER) confirms your input and switches back to the selection mode. After a complete and correct adju-
stment you have to position the cursor right to the symbol ↵ENTER and confirm it by pressing the tuning
wheel. The display switches back to the selection mode of the parameter display!
POWER - LED
STATUS - LED
SYNC. - LED
ERROR - LED
Test (-30 dB) Display
ESCAPE
BACK
Tuning wheel
Front panel keypad

5
VMA 191
Part No: 9228.8x/ .9x
Audio/ Video Modulator
A/V →ATV (AM)
A
LINE
5.4 Rear view
5.5 9-pin D-SUB connector configuration (alarm contact)
5.6 Audio socket
Pin assignment
External control of the audio mode
9228.82/ .91/ .92: 9228.85:
Mono Pins 6/ 8: Connection open Mono L Pins 6/ 8: Connection open
Pins 7/ 8: Connection closed Pins 7/ 8: Connection closed
or
Stereo Pins 6/ 8: Connection closed Pins 6/ 8: Connection closed
Pins 7/ 8: Connection open Pins 7/ 8: Connection closed
or
Dual Pins 6/ 8: Connection closed Pins 6/ 8: Connection open
Pins 7/ 8: Connection closed Pins 7/ 8: Connection open
or
Pins 6/ 8: Connection open Mono L+R Pins 6/ 8: Connection closed
Pins 7/ 8: Connection open Pins 7/ 8: Connection open
1 2 3 4 5
6 7 8 9
Alarm active:
Pin 8 and Pin 9 are closed
Pin 8 and Pin 7 are open
Normal operation
Pin 8 and Pin 9 are open
Pin 8 and Pin 7 are closed
FUSE OF DEVICE ALARM LAN / WAN
POWER FACTORY SET RF-OUT AUDIO-IN VIDEO-IN IF-IN IF-OUT
1 stereo left+ / dual A+ / mono+
2 screening / earth
3 stereo right+ / dual B+
4 stereo left- / dual A- / mono-
5 stereo right- / dual B-
6 control line contact 1
7 control line contact 2
8 control line return path (earth)
5 3 7
4 1 6
8
2

6
VMA 191
Part No: 9228.8x/ .9x
Audio/ Video Modulator
A/V →ATV (AM)
ALINE
5.7 Factory settings
By pressing of the switch “FACTORY SET“ at the rear side of the device all settings stored in the EEPROM will be deleted and re-
placed by the default settings. The device will go back to these default values. The default settings are listed in chapter 8 (Menu struc-
ture of display handling).
6. Programming by web server
6.1 Network connection to computer
System requirements:
- PC/ laptop with 10/100 Mbit Ethernet interface
- Internet browser (e.g. Windows Internet Explorer), which accept
JAVA-Script.
Setup the connection:
The VMA 191 must be connected to PC Network using an Ethernet cable.
The IP address of the VMA 191 control port is 192.168.2.80 on delivery.
The address of the network connection at the compter must be adapted to
the IP address of the VMA 191 (subnet mask: 255.255.255.0, IP address:
192.168.2.XXX). Don`t be use the same combination lock for XXX like the
IP address of the VMA 191. The IP address of the VMA 19x is entered onto
the browser interface.
When the link up has been successfully made, the device starts with the
device status page.
The language (english/ german) can be selected on the right side of each
page. To change the settings of the device at the first user log-in window
will be open automatically.
The access to the configuration menu is password protected.
Access data (factory settings):
Registration details Valid string
User name user
Password password
After successful log-in the parameters can be modified.
The user log-in is only temporarily. The connection has to be refreshed
after some time.

7
VMA 191
Part No: 9228.8x/ .9x
Audio/ Video Modulator
A/V →ATV (AM)
A
LINE
6.2 Device status
Choose language german, english
Device settings
Identifier e.g. programme name acc. adjustments in 6.3
Frequency acc. adjustments in 6.3
Level acc. adjustments in 6.3
Level monitoring acc. adjustments in 6.3
Tolerable level variation acc. adjustments in 6.3
RF-Signal on/ off acc. adjustments in 6.3
Information
Video input display SYNC pulse or noSYNC pulse at the
video input
Up Converter status of up converter, not ok →device faulty
RF-Amplifier status of RF-Amplifier, not ok →device faulty
VPS Data display of reading VPS data: date, time, nation
code + address range, sound data + special
identification
Date acc. adjustments in 6.3
Time acc. adjustments in 6.3,
12/ 24-h-mode selectable
Device number display of the device number
Device index display of the device index (hardware)
Temperature temperature of device, °C/ °F selectable
6.3 Standard settings
Choose language german, english
Identifier
Name independent text field for device identification
(max. 30 characters)
Output
Channel channel selction (2 ... 69, standard B/G,
R1 ... 69, standard D/K,
2 ... 134, standard M)
Level adjustment range: -10 ... +14 dBm
RF-Signal selection: on/ off
Level monitoring selection: on/ off
Tolerable level variation selection: ± 1 dB ... ± 5 dB, 0.5 dB steps
IF-Loop
Input/ Output selection: Activated/ Deactivated
Input frequency selection: 36.000, 36.125, 36.150, 38.900,
44.000, 45.750 MHz
Output frequency 38.900 MHz
SNMP
SNMP trap message on/ off
Date/ Time
Date input format: dd.mm.yy
Time input format: hh:mm (AM/ PM)
Date/Time input must be set to initialize internal
clock (after first start-up of device or reinitializing
after a longer shut-down).Additional selection of
AM/PM in 12-h-mode.

8
VMA 191
Part No: 9228.8x/ .9x
Audio/ Video Modulator
A/V →ATV (AM)
ALINE
6.4 Extended settings
Choose language german, english
Input
Audio impedance selection: 600/ 12000 Ohm
Audio signal selection: balanced/ unbalanced
Audio level adjustment range: -6 ... 9 dBu
Audio mode selection: auto (VPS), extern, mono, stereo,
dual (if sound carrier 2 on)
auto (VPS), extern, monoL,
monoL+R (if sound carrier 2 off)
Video low pass selection: On/ Off
Video clamping selection: soft/ hard
Video AGC selection: On/ Off
Output
Sound deviation selection: 30 kHz (if sound carrier 2 on)
30/ 50 kHz (if sound carrier 2 off)
Sound carrier 2 selection: On/ Off
Picture carrier frequency adjustment range: 45000 ... 862000 kHz
6.5 Software overview
Choose language german, english
Software versions:
WEB-Frontend
WEB Server
System software
System Controller
Up Converter
RF Amplifier
Display Controller

9
VMA 191
Part No: 9228.8x/ .9x
Audio/ Video Modulator
A/V →ATV (AM)
A
LINE
6.6 IP network
Selecting this menu at first the administrator log-in window
will be open automatically.
Following successful log-in the network and log-in settings
can be changed.
Choose language german/english
Factory settings are:
Network settings
IP-Address: 192.168.2.80
Subnet mask: 255.255.255.0
Default gateway: 192.168.2.1
MAC-Address: display of MAC-Address
Login settings
Administrator login:
User name: admin
Password: password
User login:
User name: user
Password: password
SNMP-Settings
SNMP-Access:
Read community: public
Write community: public
Trap settings:
Trap community: public
Trap receiver IP 1 0.0.0.0
2 0.0.0.0
3 0.0.0.0
• Administrator- and/or user-login can be deactivated by clearing of user
name and password.
• The addresses must be matched to the respective network.

10
VMA 191
Part No: 9228.8x/ .9x
Audio/ Video Modulator
A/V →ATV (AM)
ALINE
7. SNMP management
7.1 Download MIB
Choose language german/english
The complete MIB for an VMA 191 can be downloaded like descriped un-
der “Instructions“ on this web-site and clicking the “MIB Download”-link.
With the aid of an MIB browser, the relevant MIB can be decided upon and
taken over to control the device via a SNMP manager and/or an network
manager capable of SNMPv2c.
7.2 Trap messages
Item Message Message Type Explanation
01 System Reset WARNING reset by internal error
02 Signal ok INFORMATION module works correctly
03 Input not sync WARNING no signal at the video or IF input
04 IIC error CRITICAL IIC bus error
05 Internal controller reset WARNING error when accessing internal controller
06 No response to OPEN command CRITICAL error of an internal port
07 Up Converter: PLL1 not locked CRITICAL no funktion at the PLL 1 converter
08 Up Converter: PLL2 not locked CRITICAL no funktion at the PLL 2 converter
09 Up Converter: IF input too small WARNING IF level at Up converter input too small
10 Up Converter: IF input too large WARNING IF level at Up converter input too large
11 UP Converter: IF input ok INFORMATION IF level at Up converter input ok
12 Amplifier: RF Level too large WARNING RF level at amplifier too large
13 Amplifier: RF Level too small WARNING RF level at amplifier too small
14 Amplifier: RF Level ok INFORMATION RF level at amplifier ok
15 Input sync INFORMATION signal at video input ok

11
VMA 191
Part No: 9228.8x/ .9x
Audio/ Video Modulator
A/V →ATV (AM)
A
LINE
8. Menu structure of display handling
The following settings are the default settings. After a reset by pressig of „FACTORY SET“ on the rear side of the device all settings
stored in the EEPROM will be deleted and replaced by these defaults and the device will go back to these settings (see chapter 5.7).
Main menu
A/V Input
RF Output
IF Loop
Communication
System
Quit
A/V Input
Audio settings
Video settings
Back
IF Loop
Input/Output Deactivated
Input frequency 38.900
Back
Communication
Ethernet
SNMP
Back
System
Description: VMA 191
Language: English
Time: 12:00
Date: 01.01.2009
Back
A/V Input →Audio settings
Audio impedance: 12000 Ohm
Audio signal: balanced
Audio level: 6 dBu
Audio mode: auto (VPS)
Back
RF Output →Configuration
RF-Signal: On
Level monitoring: Off
Level variat. (dBm): ± 1
Back
A/V Input →Video settings
Video low pass: On
Video clamping: hard
Video AGC: Off
Back
RF Output →Settings
Sound deviation: 30 kHz
Sound carrier 2: On
Frequency (kHz): 303250
Level (dBm): +8
Back
Communikation →Ethernet
IP-Adress: 192.168.002.080
Subn.mask: 255.255.255.000
Gateway: 192.168.002.001
Back
Communikation →SNMP
Trap Messages: Off
Read Community: public
Write Community: private
Trap Community: public
Trap IP1: 000.000.000.000
Trap IP2: 000.000.000.000
Trap IP3: 000.000.000.000
Back
RF Output
Configuration
Settings
Back

12
VMA 191
Part No: 9228.8x/ .9x
Audio/ Video Modulator
A/V →ATV (AM)
ALINE
10. Technical data
Video input
Input voltage with AGC 0,8 … 1,3 Vpp
without AGC 1 Vpp
Impedance 75 Ω
Connector BNC socket
Input filter (disconnectable) 5 MHz low pass
Clamping (switchable) soft/ hard
AGC disconnectable
Audio input
Input level -6 ... +9 dBu
Input resistance (switchable) 0.6/ 12 kΩ
Connector 8-poles according to DIN 45326
(IEC 130-9-20)
Configuration (switchable) balanced/ unbalanced
IF loop
Output/ input internal jumpered or external avail-
able (switchable)
Output frequency 38.900 MHz
Input frequency 36.000, 36.125, 36.150, 38.900,
44.000, 45.750 MHz
Output/ input level - 14 dBm (95 dBµV)
Connector 2 x BNC socket, 75 Ω
IF decoupling ≥ 80 dB
RF output
9228.82
TV standard B/G
Sound carrier frequencies 5.5/ 5.742 MHz above pic. carrier
9228.91:
TV standard D/K
Sound carrier frequencies 6.5/ 6.25 MHz above pic. carrier
9228.92:
TV standard D/K
Sound carrier frequencies 6.5/ 5.742 MHz above pic. carrier
9228.85:
TV standard M
Sound carrier frequencies 4.5 MHz
9228.82/ .91/.92:
Sound procedure FM dual carrier processing
Sound operation modes mono/ stereo/ dual/ auto (VPS
controlled)/ external
Sound dev. 1 mono carrier 30/ 50 kHz
Sound dev. 2 mono carrier 30 kHz
Sound dev. dual tone 30 kHz
9228.85:
Sound procedure FM one carrier processing
Sound operation modes mono/ summing left-right/
auto (VPS controlled)/ external
Frequency deviation ± 25 kHz
Output frequency range 45 ... 862 MHz
Tuning step 10 kHz/ 25 kHz*
Max. output level 14 dBm (123 dBµV)
Level adjustment range -10 ... +14 dBm
Channel allocation adjacent channel ability
Connector F socket, 75 Ω
Return loss ≥ 18 dB 45 MHz
- 1.5 dB/ Octave
Test output - 30 dB (± 1 dB)
Signal quality
Single channel intermodul. ≥ 66 dB
Noise level 3rd order ≥ 60 dB
Spurious 45 ... 862 MHz ≥ 60 dB
C/N within cannel (BW =
4,8 or 4,2 MHz in 9228.85) typ. 69 dB
C/N (> 25 MHz space from
channel center; BW = 4,8
or 4,2 MHz in 9228.85) typ. 80 dB
Parallel sound noise ratio
unweighted/ weighted typ. 68/ 59 dB
Max. frequency stability ± 30 kHz
Output level stability ± 0.5 dB (5 .. 45 °C)
Output level accuracy ± 1.5 dB
Amplitude frequency
response channel (8 MHz) max. 1 dBpp
Operation parameters
Voltage / current 100 ... 240 V ~ 50/60Hz
100 ... 353 V =
Power consumption 18 W
Environmental conditions
Temperature range -10 ... +55 °C
Temperature range
(for data keeping) 5 ... 45 °C
Relative humidity ≤ 80 % (non condensing)
Mounting location splash-proof
and drip-proof
Delivery content
Dimensions (w x h x d) 448 x 44 x 350 mm
Weight 4,200 g
*25-kHz-step only with active IF loop and 36.125 MHz input frequency
9. Block diagram
Vestigial
sideband
IF modu-
lator
2x FM
modulator
+ 12 V
Video/
Audio-
Processing
Filter-
bank
IF
RF
Audio/
Video RF
Controller +
Display
—
~
Power supply
IF
IP-Control port
Test out-
put
Power

13
VMA 191
Part No: 9228.8x/ .9x
Audio/ Video Modulator
A/V →ATV (AM)
A
LINE
11. Glossary
AGC Automatic Gain Control
AM Amplitude modulation
ATV Analogue Television
AV Audio/Video
BW Bandwidth
C/N Carrier to Noise ratio
EMC Electromagnetic Compatibility
FM Frequency modulation
HTML Hypertext Markup Language
HTTP Hypertext Transfer Protocol
IF Intermediate Frequency
IFI Intermediate Frequency Interface
IIC Inter-Integrated Circuit (I²C bus, device internal data bus)
IP Internet Protocol
LAN Local Area Network
LED Light Emitting Diode
MAC Media Access Control
MIB Management Information Base
RF Radio Frequency
SNMP Simple Network Management Protocol
TV Television
VPS Video Programming System
WAN Wide Area Network
12. Bibliography
[1] EN 60728-11: Cable networks for television signals, sound signals and interactive services Part 11: Safety
(IEC 60728-11:2005); German version EN 60728-11:2005
[2] RFC 1157 Request for Comments (RFC): RFC Database URL: Http://www.rfc-editor.org/rfc.html
[3] EN 50083-2 : Cabled distribution systems for television and sound signals. Electromagnetic compatibility for equip
ment; EN 50083-2:2001
13. Document history
Version Date Modification Author
1.00 13.08.2009 basic document Häußer
Options and other TV standards 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 group
Product name: Audio/ Video Modulator
Type: VMA 191
Product number: 9228.8x, 9228.9x
according to the following regulations
EN 50083-2
EN 60728-11 (as far as relevant)
and additional device-specific regulations, enclosed above, which these products are subjected to.
Date: 13.08.2009
Signature:
Piero Kirchner
(Managing Director)