ADDERLink DV104T Manual

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Enabling and disabling all screens
This option allows you to easily send all connected screens into standby mode and 
similarly bring them all back to full operation at the click of a button. When the Disable 
all Screens command is sent, each receiver removes its video signal which causes the 
connected screen to enter power saving standby mode. 
When you disable any screens, their corresponding 
graphical representation within the System Overview page 
will be shown in black until they are re-enabled Ü 
To enable and disable all screens
1 Access the AdderLink POD Manager.
2 On the left side, click the Transmitter	Configuration button (or click the 
transmitter image within the System Overview).
3 Click the Disable all Screens button or the Enable all Screens button, as 
appropriate. 
Rescanning the System Overview
During power up, the transmitter will scan the network of connected receivers to 
determine their layout and harvest their EDID information. The details gleaned are also 
used to populate the System Overview shown left. 
All AdderLink DV receivers have unique IDs that are registered with the transmitter. If 
a receiver is subsequently removed and replaced, the replacement receiver will begin 
working immediately with the transmitter. However, the new receiver will remain 
represented within the System Overview page as an orange screen with red line as 
shown left. This is because the new receiver is not fully registered with the transmitter. 
Additionally, receivers that have been permanently removed will remain shown as orange 
screen entries as they are still registered. Use the Rescan System option to refresh the 
transmitter’s register of devices and the subsequent System Overview. 
To rescan the network
1 Access the AdderLink POD Manager.
2 If the System Overview is not already showing (see left), click the System Overview 
button.
3 Click the Rescan System option to ensure that the register of devices and the 
displayed System Overview are fully up to date.
Changing to an alternative input source
Should circumstances dictate, within the AdderLink POD Manager you can take 
immediate control and switch all receivers from one source to the other. This might be 
necessary if the primary source becomes unavailable and the transmitter is connected to 
a viable secondary source. It is also possible to make this occur automatically using the 
Single source > Auto setup. See Transmitter configuration for details.  
To change to an alternative input source
1 Access the AdderLink POD Manager.
2 If the System Overview is not already showing (see left), click the System Overview 
button.
3 Click the Switch to input x option, where x is the alternative input source to the 
one currently being used. The transmitter will immediately switch to the requested 
input source. 
 
Note: When you use the Switch to port x option, the transmitter will change to Single 
source mode and will switch all outputs to the chosen source port. The transmitter will 
not check whether a valid video feed is available on the intended HDMI input. Within the 
System Overview, if the intended input source is shown in red, then no valid signal is currently 
available.         
						

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This chapter contains a variety of information, including the following:
• Getting assistance - see right
• Troubleshooting
• Appendix A - Network cables for use with digital extenders
• Appendix B - Management API specification
• Safety information
• Warranty
• Radio frequency energy statements
GETTING ASSISTANCE
If you are still experiencing problems after checking the information contained within this 
guide, then we provide a number of other solutions:
•	Online solutions and updates – www.adder.com/support
 
Check the Support section of the adder.com website for the latest solutions and 
firmware updates.
•	Adder Forum – forum.adder.com
 
Use our forum to access FAQs and discussions.
•	Technical support – www.adder.com/contact-support-form 
 
For technical support, use the contact form in the Support section of the  
adder.com website - your regional office will then get in contact with you. 
Further information
HT   
						

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TROUBLESHOOTING
Problem:	While	attempting	a	firmware	upgrade, 	the	web	browser	reports	
that there is ‘no data’ or a similar message.
This error is caused by cached data error as a result of a previously failed upgrade at-
tempt. It is necessary to clear the browser’s cache.  
Remedy: 
Using the browser settings, clear its internal cache - or alternatively restart the browser. 
Problem: A receiver has been replaced, however, its orange screen represen-
tation within the System Overview page remains shown.
Each receiver has a unique identity code. Even though the replacement receiver is 
working correctly, it is not the one that is registered with the transmitter. For further 
details, please see the section Rescanning the System Overview.
Remedy: 
Within the System Overview page, click the Rescan System option. 
Problem: A screen has been replaced with a different model, however, the 
replacement is not showing the video output correctly.
It is possible that the EDID (Extended Display Identification Data) information being 
used by the source device is incompatible with the replacement screen. The transmitter 
has several methods for dealing with EDID information. For further details, please see 
the section To choose the screen configurations used to inform the HDMI sources.  
Remedy: 
Try changing the EDID port x option to Transparent in order to force the transmitter to 
read the EDID information from the new screen.
Problem: The transmitter is inaccessible because the username and/or 
password have been forgotten or the IP address is unknown.
Remedy: 
You need to reset the transmitter back to its default settings. 
1 Remove power from the transmitter. 
2 Use a narrow implement, such as a straightened out paperclip, to push and hold the 
recessed reset button, located near to the power connector,
3 Re-apply power to the transmitter and then release the reset button. 
To restore default settings, use a straightened out paperclip to press and hold the recessed reset button while power is applied. 
After reset, the following default settings will be restored:
• Username: admin 
• Password: password 
• IP address:  192.168.1.22
• Netmask:  255.255.255.0
• Gateway: 192.168.1.0
IMPORTANT: You are strongly recommended to set a new username and password as 
soon as possible. See the section To manage authorized users and their passwords for 
details.    
						

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APPENDIX A  - Cables for use with digital extenders
Introduction
The demands of extending high resolution DVI and HDMI digital video signals are 
considerable and mean that it is not possible to use Cat5e cabling to ac\
hieve the 
maximum extension distance of 50 meters. The large video bandwidth involved means 
that to achieve the best possible performance from digital extenders, it is vital that the 
correct cabling is chosen.
There are three important factors to consider when choosing a cable for use with digital 
extenders.
IMPORTANT:  Please remember that even though they use network-style 
cables, the link ports of the modules are NOT Ethernet ports and must not 
be connected to network switches or any other devices.
Types of cable 
Twisted pair cables can have either solid or stranded conductors. Solid cables come 
in bulk spools and are often referred to as infrastructure or bulk cabling. They are less 
flexible than stranded cables but have less attenuation. These cables are typically run 
throughout a building and terminate at the rear of a wall plate.
Types of RJ45 connector
For each type of cable there is also an associated RJ45 connector. It is important that the 
correct type of connector is used for the type of cabling.
Insulation displacement RJ45 connectors are designed to work with solid conductor cables 
while insulation piercing RJ45 connectors are designed to work with stranded conductor 
cables.
Stranded cabling is found in patch cables and is intended to connect the front of the wall 
plate to the extender or computer using RJ45 connectors. They need to be more flexible 
because the cabling gets disconnected and connected constantly. 
For a digital extender application, solid conductor cables give a better performance as 
these allow for a higher bandwidth and have less attenuation. Ideally a thickness of 22 
AWG should be used.
SolidStranded
The teeth of the insulation displacement connectors are designed to straddle and hug 
the sides of the solid center conductor of the cable. 
The teeth of the insulation piercing connectors penetrate the middle of the cable and 
nest in between the stranded wires. If insulation piercing connectors are used on solid 
core cable then the connection will not be stable as the teeth will try to but are unable 
to penetrate the solid center conductor. The teeth will then slide off the solid core and 
not make a stable contact.
Types of shielding
The third and final factor in determining the cable to be used in digital extension is 
shielding. The shielding protects the cable from two types of interference, internal 
crosstalk and external interference. Internal crosstalk is the interference between the 
different pairs inside the cable. External interference is any interference that comes from 
outside the cable. This is caused by many things; proximity to mobile phones, bundling 
cables together or running them over lighting fixtures.
Internal crosstalk is most detrimental to digital extension as the signals cannot b\
e 
recovered after experiencing crosstalk. You are left with a black screen. 
The most common type of shielding is Screened/Unshielded Twisted  Pair (S/UTP). This  has 
an overall shield and will protect the signal from external interference. However it does 
not provide any protection from crosstalk.
The next type of shielding is Shielded Twisted  Pair (STP). This has four individual shields, 
one for each data pair. This is good for protecting the signal from internal crosstalk but 
does not provide an overall shield to protect against external interference.
If you combine the two types of shielding together you have Screened/Shielded Twisted  Pair 
(S/STP). This is also sometimes referred to as Shielded/Foil Twisted  Pair (S/FTP). This has four 
individual shields, one for each pair and an overall shield. S/STP is the best cable to protect 
against any interference and is the cable choice to be used for digital KVM extension.
Insulation displacementInsulation piercing   
						

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Adder recommends
We recommend the following two types of cable:
Patch Cables
Daetwyler	7702P	flex
This is stocked by Adder with the following part number VSCAT7-50. This is a 50m length 
of Daetwyler 7702P terminated with HRS TM31P RJ45 connectors.
CU	7702	4P	flex
Flexible data cable S/FTP Cat.7 AWG26
1  Inner conductor:   AWG26 bare copper wire, stranded
2  Wire: 0.99 mm Ø
3  Screen pair:  Alu PETP foil
4  Screen: Tinned braided copper
5  Sheath: FR/PVC grey RAL 7035
1  Inner Conductor:   AWG23 bare copper wire
2  Wire: 1.5 mm Ø 
3  Screen Pair: Alu PETP foil  
4  Screen: Tinned braided copper 
5  Outer Sheath:   FRNC/LSOH orange RAL 2003
Bulk Cables
Daetwyler 7120 with Harting RJ Industrial 10G RJ45 connectors.
CU 7120
Data cable S/FTP Cat.7A AWG 23   
						

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APPENDIX B - Management API	specification
Introduction
The AdderLink DV104T is monitored and managed by a web interface. This provides 
topology and status information and allows configuration of the transmitter unit plus the 
receiver units connected to it. 
The unit also has a management API via the same HTTP interface. This allows the 
status, topology and configuration to be managed from another application, via HTTP 
commands. Only the first line of the HTTP method is required as the URI contains all 
the required information to perform the requested operation. 
API Overview
The API allows monitoring of the following:
• Status of the ALDV104T unit,
• Status of the two HDMI inputs to the ALDV104T,
• Topology of the connections to ALDV100R units,
• Status of up to four ALDV100R units connected to the ALDV104T,
• Status of the screens connected to the ALDV100R units,
• Status of the connections between the ALDV104T and the ALDV100s.
The following aspects of the ALDV104T and the connected ALDV100s can be controlled:
• HDMI input routed to all ALDV100s,
• Automatic input switching mode,
• Enable/disable of all connected screens,
• Enable/disable of individual screens,
• Source of the EDID presented at each HDMI input.
API Operation
Message Structure
All operations of the API are performed using a URI contained in an HTTP request. The 
control and configuration operations are performed by the following request:
GET /cgi-bin/api? HTTP/1.1
Where  is one or more URI parameters to describe the operation to be performed.
The response is an HTTP response. The first line contains the status code indicating the 
success or failure of the operation.   
The response is either:
HTTP/1.1 200 OK 
or an HTTP error response:
HTTP/1.1 400 Bad Request
Command and Control Operations
The following command and control operations are available:
Switch to input
Select Input 1
Switch all outputs to the signal on HDMI input 1
GET /cgi-bin/api?opmode=0&insrc=1 HTTP/1.1
Select input 2
Switch all outputs to the signal on HDMI input 2
GET /cgi-bin/api?opmode=0&insrc=2 HTTP/1.1
Set input switching mode
Set fixed mode
Set the input switching mode to fixed. The selected input signal will be routed to the 
outputs regardless of the status on the input signals on inputs 1 and 2. The opmode is set 
to 0 to switch to single source mode at the same time.
GET /cgi-bin/api?opmode=0&swmode=0 HTTP/1.1
Set auto mode
Set the input switching mode to auto. In this mode the selected input source will 
automatically switch when an input source becomes active, either by it being plugged in 
or by the source becoming active (e.g. the player being powered on). If the active source 
becomes inactive then it switches to the other input as long as it is active. This provides a 
fallback to a backup source if the primary input fails. The opmode is set to 0 to switch to 
single source mode at the same time.
GET /cgi-bin/api?opmode=0&swmode=1 HTTP/1.1   
						

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Screen Enable/Disable 
Disable all screens
Disables all screens so they do not display a picture (most screens will go into standby 
mode). This is intended to blank all screens when not in use, overnight etc.
GET /cgi-bin/api?screen1=0 HTTP/1.1
Enable all screens
Enables all screens so they display a picture. This is the opposite of disable all screens and 
is used to restore the display which was previously disabled. This command will enable all 
screens, regardless of whether they were disabled by the disable all screens command or 
disable individual screen command.
GET /cgi-bin/api?screen1=1 HTTP/1.1
Disable individual screen
Disable an individual screen so it does not display a picture (most screens will go into 
standby mode).  The screen is identified by the port number (1..4) of the ALDV104T to 
which it is attached. This is intended to blank all screens when not in use, overnight etc.
GET /cgi-bin/api?port=1?screen1=0 HTTP/1.1
GET /cgi-bin/api?port=2?screen1=0 HTTP/1.1
GET /cgi-bin/api?port=3?screen1=0 HTTP/1.1
GET /cgi-bin/api?port=4?screen1=0 HTTP/1.1
Enable screen
Enables an individual screen so it displays a picture. This is the opposite of disable 
screen command and is used to restore the display which was previously disabled. This 
command will enable a screen , regardless of whether it was disabled by the disable all 
screens command or disable individual screen command.
GET /cgi-bin/api?port=1?screen1=1 HTTP/1.1
GET /cgi-bin/api?port=2?screen1=1 HTTP/1.1
GET /cgi-bin/api?port=3?screen1=1 HTTP/1.1
GET /cgi-bin/api?port=4?screen1=1 HTTP/1.1
Set source for EDID for input
The EDID presented on each input is either the default one built in to the ALDV104T or 
is obtained from one of the screens connected to a connected ALDV100R. The source of 
the EDID for each of inputs 1 and 2 is controlled individually. There are three options
• Default – built in EDID,
• Clone from display – copy EDID from selected display and always use this EDID,
• Transparent from display – copy EDID from selected display and re-read from display 
every time the display is re-connected. This allows the EDID to change dynamically if a 
different display is connected.
Set to Default EDID
Use the built in default EDID for the input. The emod1 parameter controls input 1, emod2 
controls input 2.
To select this mode emod1/emod2 = 0.
GET /cgi-bin/api?emod1=0 HTTP/1.1
GET /cgi-bin/api?emod2=0 HTTP/1.1
Clone from display
Copy the EDID from the selected display and always use it for this input. The esrc1 
parameter is used when controlling the EDID for input 1, esrc2 controls input 2. The 
value of the esrc parameter is the port number (1..4) on the ALDV104T through which 
the selected display is connected. To select this mode emod1/emod2 = 1.
GET /cgi-bin/api?emod1=1&esrc1=1 HTTP/1.1
GET /cgi-bin/api?emod2=1&esrc2=1 HTTP/1.1
This example shows the EDID obtained from the display on port 1. Similarly esrc1/2 = 
2,3 or 4  to select the screen connected to ports 2,3 or 4
Transparent from display
Copy the EDID from the selected display and re read it whenever the display becomes 
active. This allows the EDID to change dynamically if a different display is connected to 
the selected port. The esrc1 parameter is used when controlling the EDID for input 1, 
esrc2 controls input 2. The value of the esrc1/esrc2 parameter is the port number (1..4) 
on the ALDV104T through which the selected display is connected. To select this mode 
emod1/emod2 = 2.
GET /cgi-bin/api?emod1=2&esrc1=1 HTTP/1.1
GET /cgi-bin/api?emod2=2&esrc2=1 HTTP/1.1
This example shows the EDID obtained from the display on port 1. Similarly esrc1/2 = 
2,3 or 4  to select the screen connected to ports 2,3 or 4   
						

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Status Operation
Get status
The operation to get the status fetches all the information about the topology and status 
of the ALDV104T, its inputs, connections to ALV100R units, their status and that of the 
attached screens.
The request to get the status is:
GET /status/tree HTTP/1.1
The response is an HTTP response containing a status code followed by headers and a 
body containing a JSON encoded array of object. 
A typical example of a response is: 
[
  {“ad”:”a”,”ln”:”ir”},
  {“ad”:”b”,”ln”:”ir”},
  {“ad”:”1”,”ln”:”hl”,”rx”:”nr”,”sw”:”1”,”flt”:””},
    {“ad”:”2”,”ln”:”hl”,”rx”:”nr”,”sw”:”1”,”flt”:”HEDS”,“nd”:
”DELLDescriptive text”},
  {“ad”:”3”,”ln”:”hr”,”rx”:”nr”,”sw”:”1”,”flt”:””},
  {“ad”:”4”,”ln”:”hs”}
]
There are 6 objects of 2 types, and object is identified by the value of its “ad” attribute.
Input type
The first two objects represent the 2 HDMI inputs. Each object has two attributes “ad” 
and “ln”:
“ad” : “a|b” identifies the port a = input 1 b = input 2
“ln” : “ir”  input is red (disconnected / bad)
“ln” : “ig” input is good (connected / good)
Output type
The remaining 4 objects represent the 4 output ports and the ALDV100Rs and displays 
connected to them. Each object has 2 attributes  “ad” and “ln”, plus four optional 
attributes “rx”, “sw”, “flt” and “nd”. 
“ad” : “1|2|3|4”  identifies the port 1 = output 1 .. 4 = output 4
“ln” : “hs”  output is not in use
“ln” : “hl” output is connected 
“ln” : “hr” output is not connected
“rx” : “nr” screen is not displaying signal
“rx” : “ng” screen is displaying signal
“rx” : “na” screen is in unknown state cannot be contacted (orange on display) 
“rx” : “nb” screen is in disabled state (black on display)
“sw” : “1” screen is switched to input 1 (may or may not be displaying image, see “rx”)
“sw” : “2”  screen is switched to input 2 (may or may not be displaying image, see “rx”)
“flt” : “H” Hot Plug not detected from display
“flt” : “E” EDID not successfully read from display
“flt” : “D” Display not selected this input source
“flt” : “S” Signal not detected at output to display
“nd” : “NameDescription” Name of screen and descriptive text stored   
     in receiver.
continued   
						

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Output type (continued)
Typical outputs are: 
{“ad”:”1”,”ln”:”hs”}, - not in use
{“ad”:”1”,”ln”:”hl”,”rx”:”ng”,”sw”:”1”,“flt”:”’},  
- connected to input 1 - all good.
{“ad”:”1”,”ln”:”hl”,”rx”:”nr”,”sw”:”1”,”flt”:”HEDS”},  
- connected to input 1 not displaying signal. No Hotplug, EDID, signal or display detected. 
Cable unplugged.
{“ad”:”1”,”ln”:”hl”,”rx”:”nr”,”sw”:”1”,”flt”:”S”},  
- connected to input 1 not displaying signal. No signal detected. Input on ALDV104T not 
connected.
{“ad”:”1”,”ln”:”hl”,”rx”:”nr”,”sw”:”1”,”flt”:”D”},  
- connected to input 1 not displaying signal. Display not detected. Input source on display 
not selected.
{“ad”:”1”,”ln”:”hl”,”rx”:”nr”,”sw”:”1”,”flt”:”HEDS”,”nd”:”Del
lDescription of screen”},  
- connected to input 1 not displaying signal. No Hotplug, EDID, signal or display detected. 
Cable unplugged. Screen name is “Dell” and the descriptive text is “Description of 
screen”.
{“ad”:”1”,”ln”:”hl”,”rx”:”nb”,”sw\
”:”1”},  
- connected to input 1 not displaying signal as disabled
{“ad”:”1”,”ln”:”hr”,”rx”:”na”,”sw\
”:”1”},  
- not connected to input 1 not displaying signal
Similarly for outputs 2,3,4. 
Security
The ALDV104T implementation has security on its web interface, using HTTP Digest 
Authentication (RFC 2617). This is enabled by default and can be disabled via the web 
interface.
If security is enabled, the API needs to provide an Authorization header in requests, 
otherwise the operations will fail and return a 401 Unauthorized error.
Digest authentication uses a challenge response model. A request sent without an 
Authorization header will receive a 401 response with a WWW-Authenticate header. 
The parameters are extracted from this and used along with the username, password 
and request URI to generate the response placed in the Authorization header of the API 
requests.
The status operation can be performed without the need for authentication, only the 
commands sent to /cgi-bin/api need authentication.   
						

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WARRANTY
Adder Technology Ltd warrants that this product shall be free from defects in 
workmanship and materials for a period of two years from the date of original purchase. 
If the product should fail to operate correctly in normal use during the warranty period, 
Adder will replace or repair it free of charge. No liability can be accepted for damage due 
to misuse or circumstances outside Adder’s control. Also Adder will not be responsible 
for any loss, damage or injury arising directly or indirectly from the use of this product. 
Adder’s total liability under the terms of this warranty shall in all circumstances be 
limited to the replacement value of this product.
If any difficulty is experienced in the installation or use of this product that you are 
unable to resolve, please contact your supplier.
SAFETY INFORMATION
• For use in dry, oil free indoor environments only.
• Warning - live parts contained within power adapter.
• No user serviceable parts within power adapter - do not dismantle.
• Plug the power adapter into a socket outlet close to the module that it is powering.
• Do not use an unearthed power socket or extension cable.
• Replace the power adapter with a manufacturer approved type only. 
• Do not use the power adapter if the power adapter case becomes damaged, cracked 
or broken or if you suspect that it is not operating properly.
• If you use a power extension cord with the units, make sure the total ampere rating of 
the devices plugged into the extension cord does not exceed the cord’s ampere rating. 
Also, make sure that the total ampere rating of all the devices plugged into the wall 
outlet does not exceed the wall outlet’s ampere rating.
• Do not attempt to service the units yourself.
• Do not use to link between buildings.
• The four CATx ‘LINK’ interfaces (RJ45 style connectors) of the transmitter must only 
be connected to AdderLink DV receivers. Do not connect these interfaces to any 
other devices, particularly network or telecommunications equipment.