Wisi VX 29 B Series User manual

Operating instructions
© WISI Communications GmbH & Co. KG wisi.de
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WISI VALUE LINE
VX 29 B series
RF amplifier, remotely powered
417050-a (07/2020)
Knowledge Base > VX series > Products > VX 26 B / VX 29 B
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Operating instructions
© WISI Communications GmbH & Co. KG wisi.de-2-
VX 29 B series
RF amplifier, remotely powered
Document revision information:
Date Doc.
rev.
Document changes
07.07.2020 aFirst release
FW v1.0.0.12 / HFC manager+ v2.7.12 / HFC updater v0.4.8
CE declaration of conformity
Please find the declaration of conformity at our website:
download-area.wisi.de
Then navigate through “CE Declarations of Conformity” and select the document
link corresponding to your device.

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VX 29 B series
RF amplifier, remotely powered
Operating instructions
Contents
1 Safety and warning notes ............................................................................ 4
1.1 ESD protection ............................................................................................. 4
1.2 Electrical safety ............................................................................................ 4
2 Device overview ............................................................................................ 5
2.1 Options and Accessories .............................................................................. 5
2.2 Outer features ............................................................................................. 6
2.3 Powering options ......................................................................................... 6
3 Control interfaces .......................................................................................... 8
3.1 Handset interface (for WISI OH 41) .............................................................. 8
3.2 Bluetooth interface basics ............................................................................ 9
3.3 Device control using WISI HFC manager+ .................................................. 11
3.4 Firmware updates and recovery using WISI HFC updater ........................... 12
3.5 Remote control via FSK receiver module VT 21 ........................................... 16
4 Configuration of signal transmission ........................................................ 17
4.1 General signal path setup .......................................................................... 17
4.2 Basic downstream alignment ..................................................................... 20
4.3 Basic upstream alignment .......................................................................... 20
4.4 Spectral monitoring ................................................................................... 21
4.5 Auto-Alignment ......................................................................................... 23
4.6 Automatic level and slope control (ALSC) ................................................... 25
5 Functional diagram ...................................................................................... 31
6 Service and support: wisiconnect.tv .......................................................... 32
Operating instructions
VX 29 B series -
RF amplifier, remotely powered

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Operating instructions
© WISI Communications GmbH & Co. KG wisi.de-4-
VX 29 B series
RF amplifier, remotely powered
1 Safety and warning notes
Please familiarize with the instructions before start-up.
Carefully inspect the device for any obvious damage. If it appears to have
been damaged, contact your WISI representative.
Do not use any equipment with noticeable damage!
1.1 ESD protection
This product contains electrostatic sensitive components.
These parts can be damaged or effectively destroyed by electrostatic
discharge (ESD) during unpacking, installation, removal, storage, or
shipment if incorrectly handled.
Please note that discharge might go unnoticed by a user.
Always take common anti-static precautions when handling the equipment.
1.2 Electrical safety
Risk of bodily injury from electric shock!
Failure to adhere to these instructions could result in personal injury and/or
damage to electrical components.
• The equipment must be grounded in accordance to local and national electrical
standards.
• The device is started up immediately when the power plug is inserted into the
mains socket. To turn off the power supply, the plug must be removed from the
socket. Never pull at the cable.
• The mains socket should be easily accessible. In the event of operational error, the
plug must be immediately removed from the socket.
• The power supply partition of the equipment as well as all coaxial interfaces
carrying remote power feeding contain dangerous voltages. All service or
maintenance work should be carried out by qualified personnel who can get
assistance by contacting the manufacturer’s agent.

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VX 29 B series
RF amplifier, remotely powered
Operating instructions
2 Device overview
2.1 Options and Accessories
Powering options (see section 2.3)
WISI type Description
VX 29 B xxxx RF amplifier, 27...65 V AC
XE 29 Cabling kit for external power insertion
RF connectors
WISI type Description
ZG 27 PG 11 case connection for WISI MK 15 cable
ZG 28 PG 11 adapter, F female
ZG 35 A PG 11 adapter, 3.5/12 female
Input / output configuration modules (see section 4.1)
WISI type Description
-Output bridge
XM 51 B Splitter 4 dB / 4 dB
XM 53 B Tap 8 dB / 2 dB
XM 55 B Tap 13 dB / 1 dB
XM 56 B Tap 18 dB / 1 dB
Control tools (see chapter 3)
WISI type Description
OH 41 Handset for local device control
HFC manager+ Android app for device control via bluetooth
HFC updater Mobile app for firmware update and recovery via bluetooth

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VX 29 B series
RF amplifier, remotely powered
2.2 Outer features
Mains input
Output 2
Input
GND terminal
Bluetooth antenna
Loop-
through
Output 1
Outer interfaces of the amplifier.
2.3 Powering options
NOTE: The power supply partition of the equipment as well as all coaxial
interfaces carrying remote power feeding contain dangerous voltages.
Please see the safety notes in section 1.2!
VX 29 B uses a 27...90 V AC voltage input. The optional WISI XE 29 cabling kit
allows for the power insertion from a suitable voltage supply directly via the mains

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VX 29 B series
RF amplifier, remotely powered
Operating instructions
input. Alternatively, remote powering can be engaged from one of the RF ports by
plugging the according fuse.
Each of the the fuse sockets also allows for the forwarding of the applied device
supply voltage to the corresponding RF port.
Spare fuses
use as F1...F4
Fuse socket F1
for „input“
Fuse socket F2
for „loop-through“
Fuse socket F3
for „output 2“
Fuse socket F4
for „output 1“
The fuse sockets connect the internal remote supply plane to the particular RF ports.
Powering options with the remotely-powered VX 29 B types

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Operating instructions
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VX 29 B series
RF amplifier, remotely powered
3 Control interfaces
3.1 Handset interface (for WISI OH 41)
NOTE: VX 29 B only works with handsets OK 41 A and OH 41. OK 41 is outdated
and not compatible.
Socket for
handset control
Position of the handset connector.
Handset basics
Parameter menu
▲▼ keys Select parameter
►key Open parameter sub-menu
◄key Back
Parameter sub-menu
◄► keys Select digit to be changed (cursor blinks under the active
digit)
▲▼ keys Change the value
Saving: After completion of all settings, press the ► key for leaving the value field.
The settings are saved now.
NOTE: If not saved, settings are lost as soon as the handset is disconnected.

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VX 29 B series
RF amplifier, remotely powered
Operating instructions
3.2 Bluetooth interface basics
The management interface of VX 29 B can be accessed using the bluetooth
low-energy (BLE) wireless technology. The bluetooth antenna enables the radio
connection to a smart phone or tablet.
The Android app WISI HFC Manager+ provides the GUI for the configuration of the
fiber node, whereas the WISI HFC updater brings firmware update and recovery
functions.
Bluetooth
activity LED
Bluetooth activation button
Effective only if „BT function“
is set to „Timeout“
Bluetooth
antenna
Bluetooth access elements
Multilevel security implementation
There are three security levels to prevent the node from unauthorized access:

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VX 29 B series
RF amplifier, remotely powered
Level 1: Button activation
The BT activation button inside the node (see figure above) opens the bluetooth
interface for connections. The button activation behavior can be modified via
handset.
Level 2: Key authentication
If Bluetooth bonding is enabled, the connecting mobile device needs to
authenticate with a configurable key. The initial key is 565835, you can change it as
described below (key modification).
NOTE: Please activate the bluetooth bonding and change the key during the first
setup in order to avoid unauthorized access!
Level 3: Access control list (ACL)
Once paired, a BT device is put on the access list. If ACL restriction is enabled, the
node will only allow clients within this list to connect. The list is cleared by switching
the ACL restriction filter off.
Button activation behavior:
Handset: Bluetooth > BT Function > timeout / disabled (off) / hold (on)
default: timeout
Bluetooth bonding (key restriction)
Handset: Bluetooth > BT Bondmanager > no bonding / bonded / scrambled
default: no bonding
Key modification:
Handset: Bluetooth > BT Key > 6 digits, numerical
default: 565835
ACL restriction:
Handset: Bluetooth > BT MACFilter > filter off / filter on
default: filter off

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VX 29 B series
RF amplifier, remotely powered
Operating instructions
3.3 Device control using WISI HFC manager+
Please install the android app from the Google Play Store:
https://play.google.com/store/apps/details?id=de.wisi.hfc_manager
When starting up the application, the device scan listing will populate with the active
bluetooth devices nearby:
Device scan list (example)
Select your device and wait for the connection to be established. Once connected,
the Bluetooth logo in the upper right corner will show the connection quality.
The start screen provides a selected set of device details:
Device overview (example)
The menu is available through the blue logo in the upper left corner or by swiping
from the left screen edge.

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VX 29 B series
RF amplifier, remotely powered
App menu overview (example)
3.4 Firmware updates and recovery using WISI HFC updater
You can use the WISI HFC updater app to update the amplifier‘s firmware via a
bluetooth connection.
3.4.1 Basic update procedure
1. When starting up the application, the device scan listing will populate with the
active Bluetooth devices nearby. The list is sorted by signal strength. Tapping the
search button on the lower right will initiate another scan.
Device scan list (example)

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RF amplifier, remotely powered
Operating instructions
2. Tap on the device you want to operate on. After a few seconds of loading time,
the device inventory will show up.
Device inventory (example)
3. If there is an update available for your device, the SW version will be highlighted.
4. The „Update“ button opens the update screen. This will only be available, if the
particular device does support FW updates via bluetooth.
Update screen (example)
5. Double check the firmware versions. Maybe you want to follow the link to our
support website wisiconnect.tv in order to check the release notes.
NOTE: Although all user settings will be restored after the update, signal
transmission will be affected temporarily during the update process!
6. If sure to proceed, start the update process by tapping start update. The
firmware upload can take up to 10 minutes. Avoid disturbing the bluetooth
connection during the update process: Leave the HFC updater app active on

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VX 29 B series
RF amplifier, remotely powered
the mobile device, do not make or take calls, and stay within the reach of the
bluetooth connection.
Update progress (example)
7. Once finished, the app will show a message on the outcome of the update
process.
Confirmation message (example)
8. Depending on your device settings, you may have to re-activate the bluetooth
interface using the bluetooth button. Then, reconnect to the amplifier and verify
the installed firmware version.
3.4.2 Recovery of devices stuck in bootloader
Mainly due to adverse bluetooth radio conditions during update operations, you may
find an amplifier stuck in bootloader mode. A bootloader device can be identified by
a modified device name in the scan list.

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RF amplifier, remotely powered
Operating instructions
Found device in bootloader mode (example)
Typically, restarting the basic update procedure will automatically find an applicable
firmware and accomplish the update task.
Expert mode:
In case the HFC updater fails to identify the device type correctly, the “expert” mode
can help recover the unit, either by choosing one of the included firmware images
from the “select file” list or by importing an update file from your mobile storage.
IMPORTANT NOTES on updates in expert mode:
• Applying an inappropriate firmware update can lead to severe malfunctions!
• Be sure to choose the correct device type from the “select file” list!
• Use only update files from trusted sources!
• Never change any file name or contents of update files!
Expert mode of the update screen

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VX 29 B series
RF amplifier, remotely powered
3.5 Remote control via FSK receiver module VT 21
Compatible modules:
WISI type Description
VT 21 FSK receiver module, 868 MHz
VT 21 B FSK receiver module, 862 MHz
VT 21 T FSK receiver module, tunable
The FSK-receiver modules from the WISI VT 21 series provide remote control
functionalities compatible to the FOSTRA-F system (HEC 2191) and EN 60728-14.

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RF amplifier, remotely powered
Operating instructions
4 Configuration of signal transmission
4.1 General signal path setup
Signal transmission block diagram

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VX 29 B series
RF amplifier, remotely powered
Test port input
(-20 dB)
Input configuration Downstream option
Output
configuration
Test port output
(-20 dB)
Signal configuration features inside the amplifier housing
4.1.1 Modules for input and output configuration
WISI type Description
-Bridge
XM 06 B Attenuator 0 dB / 6 dB
XM 51 B Splitter 4 dB / 4 dB
XM 53 B Tap 8 dB / 2 dB
XM 55 B Tap 13 dB / 1 dB
XM 56 B Tap 18 dB / 1 dB
XM 69 B Attenuator 6 dB / 9 dB
Input configuration socket
The nominal RF input level for the VX 2x B is 70 dBμV per channel. If, due to special
signal scenarios, the input signal is strongly sloped or much higher than the nominal
level, pluggable input configuration modules can be used in order to facilitate the
signal alignment.

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RF amplifier, remotely powered
Operating instructions
Also, by placing a tap module for the input configuration, the loop-through port can
be used as an additional, unamplified signal output.
Output configuration socket
The output configuration modules allow for the distribution of the power stage
output signal to the RF output ports 1 and 2.
NOTE: The insertion loss of the splitters and taps will affect the maximum available
downstream level at the RF ports!
4.1.2 Downstream option modules
WISI type Description
- no module - socket bypassed
XE 51 B Slope 3 dB & 9 dB
XE 52 B Slope 12 dB & 18 dB
XE 57 B Cable simulation 6 dB & 9 dB
Downstream option bypass
Handset: Downstream > ModuleByPass > auto / bypass / through
default: auto
4.1.3 Diplexer frequency switch (FlexAccess)
Diplexer frequency switch
HFC manager: FLEX ACCESS > Diplex Switch > F1 / F2
(frequencies depending
on amplifier type)
Handset: Upstream > DiplexSwitch >

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RF amplifier, remotely powered
4.2 Basic downstream alignment
Downstream input attenuator
HFC manager: DOWNSTREAM > Input Attenuator > 0...20 dB
0.5 dB steps
Handset: Downstream > InputAttenuator >
Downstream input equalizer
HFC manager: DOWNSTREAM > Input Eq. > Input Eq. > 0...25 dB
0.1 dB steps
Handset: Downstream > InputEqualizer >
HFC manager: DOWNSTREAM > Input Eq. > Cable Sim. > 0 / 5 / 10 dB
default: 0 dB
Handset: Downstream > CableSimulator >
Downstream interstage attenuator
HFC manager: DOWNSTREAM > Interstage Atten. > 0...20 dB
0.1 dB steps
Handset: Downstream > InterStageAtt >
Downstream interstage slope
HFC manager: DOWNSTREAM > Interstage Slope > 0...15 dB
1.0 dB steps
Handset: Downstream > InterStageSlope >
4.3 Basic upstream alignment
Upstream input attenuator
HFC manager: UPSTREAM > Input Attenuator > 0...15 dB
0.5 dB steps
Handset: Upstream > US InputAtt >