Harman AMX SVSI N2135A Quick Start Manual Download Page 2

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5095704-00  REV: A

Last Revised: 11/2017

Basic KVM Setup 

The N2135A Encoders and N2235A Decoders are KVM-capable. By default, USB 

connections are enabled and configured to follow video switching. Follow these steps 

for basic KVM setup. To learn about some of the more advanced KVM capabilities, see 

the section 

Advanced KVM Setup (with added security features)

.

1.

On the N2135A Encoder, connect the USB Mini-B port (designated by a laptop 

icon) to the computer to be controlled. 

2.

Connect the computer’s video output to the Encoder’s 

HDMI IN

 port. 

3.

On the N2235A Decoder, connect the 

HDMI OUT

 to the display. 

4.

Connect a USB keyboard and mouse to the Decoder’s USB Standard-A ports (they 

can be plugged into either port). 

NOTE: For wireless devices, simply plug the wireless signal receivers into these 

ports. For keyboard and mouse combos (with a single connection) use the 

keyboard port.

5.

Using N-Able, click the 

Unit Management

 tab.

6.

Click the 

Auto Discover

 button to discover your new devices (if you have not 

already done so).

7.

Once discovery is complete (and you see the new units listed in N-Able), click the 

Video Matrix

 tab.

8.

On the matrix, click the common cell for the desired Encoder/Decoder streaming 

combination. See the screen shot below for an example.

9.

Click the 

Take

 button to make the change to your matrix. The radio button turns 

green to indicate the connection was successful. 

Video/USB Switching Options

USB Follows Video

: By default, units can be switched using N-Able without modifying 

the configuration. When you switch video streams (using the matrix as shown above) 

the USB functionality will follow the video. 

Independent USB Switching:

 Use N-Able’s 

USB Matrix 

tab to switch USB control 

(without affecting video).

Independent Video Switching:

 To switch video streams 

without

 affecting USB control, 

first select 

N-Able > Settings

 from N-Able’s main menu. When the 

N-Able Settings

 

dialog box is displayed, disable the 

USB follows Video switching for KVM units

. Now you 

can use the 

Video Matrix

 to switch video streams only.

Advanced KVM Functionality: 

To have the ability to use KVM hotkeys for switching, 

KVM 

Advanced Settings

 must be enabled on the individual unit (select 

KVM

 from the top of 

the unit’s web interface). The next section discusses these settings in more detail.

Advanced KVM Setup (with added security features)

You can configure devices for more advanced KVM operation on the Encoder and 

Decoder 

KVM

 pages. To access these pages, double-click the unit’s name in the matrix 

and click 

KVM

 at the top of the 

Settings

 page (see below).

FIG. 3  

SELECTING THE KVM PAGE

NOTE: Many of these options are easier to manage in N-Able’s KVM Wizard (especially in 

large configurations). Select Tools > KVM Wizard from the N-Able main menu to access 

the wizard. 

The following table describes some of the more advanced functionality. It is important 

to note that many of these options only appear on the 

KVM

 page when 

USB

 is enabled 

as well as 

KVM Advanced Settings

.

Warning! You must assign KVM passwords to your Encoders and Decoders (as well as 

change the default login password from admin/password) in order for your system to 

be secure.

Troubleshooting Guidelines

Please contact SVSI technical support at [email protected] or 256.461.7143 

(x9900) for assistance with any installation issues.

FIG. 2  

CREATING STREAMING COMBINATIONS

Enabling this cell causes 

Conference Room Decoder

 to listen

to 

Conference Room Encoder

Click 

Take

 to apply changes. 

Options

Descriptions

Permission Levels

Determines which Decoders can communicate with which 

Encoders. A Decoder must have a permission level that is 

equal to or greater than

 the Encoder in order for 

communication to be successful.

KVM Encoders table

Use the 

KVM Encoders

 table (on the Decoder’s 

KVM

 page) 

to:

• Let the Decoder know the Encoder passwords it needs to 

establish communication.

• Assign Encoder hotkeys.

• Add/remove Encoders from the Decoder’s list.

Passwords

By default, KVM streams are encrypted with a common 

password. You can change the password on the 

Settings

 

page of the Encoder. If you change Encoder passwords, you 

will need to supply the new information to the Decoders to 

allow communication to continue. 

A Decoder only receives password information for the 

Encoders on the network that have been associated with 

that Decoder as mentioned previously.

Hotkeys

To use hotkeys for easy switching, enable 

KVM Directory 

Screen Enable

 on the Decoder’s 

KVM

 page. You can now 

access the KVM Directory Screen at any time by pressing the 

<Scr Lk>

 button twice on the keyboard connected to the 

Decoder. This screen displays all Encoders associated with 

that Decoder (and their corresponding hotkey). 

Import and export KVM CSV 

files

Multiple Encoders and Decoders can be configured from a 

single CSV file (which is generated using the 

KVM

 

Wizard

 in 

N-Able

). Once all changes are made, upload the file to each 

unit using its 

KVM

 page.Click the 

Choose File

 button, 

browse to the

 

CSV

 

file you exported from the wizard, and 

click the 

Upload

 button. 

Problem

Possible Solution

Video is not 

transmitting.

• Verify that the Encoder 

TX Enable

 setting is turned on. 

(Encoders ship from the factory with their video output turned 

off by default.)

Local Play

 graphic is 

displayed.

• Verify Decoder is assigned to view a valid stream in the N-Able 

matrix.

• Verify Decoder is currently in live play mode (black text on matrix 

view).

• Verify network is properly configured and set up. If needed, 

connect Encoder directly to Decoder to verify network issues.

Host Play 

graphic is 

displayed.

• Verify Encoder is in live play mode (black text in matrix).

• Verify source is attached and is outputting a valid signal (

HDMI

 

LED on Encoder is on).

Unsupported 

Resolution

 graphic is 

displayed.

• Change source resolution to a valid resolution (try 720p60).

• Verify cabling is correct.

Copy Protected Content

 

screen is displayed.

• Contact technical support.

Black screen/no 

graphic is displayed.

• Set Decoder to local play. If the local play graphic does not 

appear, check the display input settings and cabling.

• If local play appears, set Decoder to live play and verify network 

is configured properly.

No audio is detected.

• If there is no audio on all

 

Decoders, verify audio settings are 

correct on Encoder.

• If there is no audio on a single Decoder, verify audio settings are 

correct on Decoder.

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