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DXR-H4 Quick Start Guide 

Technical Support 

(Refer to legislation sheet 

LS-AHKL-0001

)

 

ƒ

This device complies with part 15 of the FCC Rules (Class A)

 

ƒ

Operating temperature range: 15° to 30° C (59° to 86° F)

 

ƒ

Operating humidity range:  10% to 90% (non-condensing)

For product documentation, downloads and technical assistance, visit:

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Information in this document is subject to change. No part of this document may be reproduced through any means including (but not limited to) electronic or 

 

mechanical, without express written permission from Amulet Hotkey Ltd. Amulet Hotkey Ltd may have patents, patent applications, trademarks or copyrights or other 

intellectual property rights covering subject matter in this document. PC-over-IP, PCoIP and the PCoIP logo are registered trademarks of Teradici Corp. Amulet Hotkey 

and ‘solutions you can bank on’ are registered trademarks of Amulet Hotkey Ltd. Other product names and company names listed within this document may be trade

-

marks of their respective owners. Amulet Hotkey products are designed and built in the UK. For further information on all our products, visit 

www.amulethotkey.com.

DHCP or static IP assignment

If your network uses DHCP, the DXR-H4 obtains its IP address from the DHCP 

server. If no DHCP server is available, the DXR-H4 times out after three minutes 

and adopts its default IP address of 192.168.1.100. 

Note:

 Change the default IP address as soon as possible. 

How to change the default IP address

All DXR-H4 cards will revert to the same default IP address, this can cause 

conflicts as the network grows. Use the Administrative Web Interface (AWI) to 

assign a different static IP address than the default. 

Enter the default IP address of the DXR-H4 in a browser to access the AWI. 

Enter the default password 

ahkdante

 and click 

Log In

.

From the 

Configuration

 menu select the 

Network

 option.

Make sure the 

Enable DHCP

 option is unchecked.

Enter the new fall-back default IP address into the 

IP Address

 fields.

Make sure the 

Enable DHCP

 option is checked.

Connect a zero client to the DXR-H4

Several connection methods are supported. The default method is 

Auto 

Detect

, but there are other methods such as 

SLP Discovery

. You can also use a 

connection broker. See the 

DXR-H4 user manual

 for more details. 

Make sure the remote Amulet Hotkey zero client is powered on. 

Start a PCoIP session to connect the zero client to the DXR-H4. If you want 

to use the default connection method, click 

Connect

. If not, do the steps in 

Change the connection method for the zero client

.

Change the connection method for the zero client

To change the default connection method, use the On Screen Display (OSD):

Select 

Options > Configuration

 from the Menu Bar.

Click 

Unlock

 and enter the default password 

ahkdante

. See the 

DXR-H4 

user manual

 for how to change the default password.

Select the 

Session

 tab and select the connection type from the menu.

Click on 

OK

.

Setup complete

Once the zero client successfully connects to the host, check for the following 

indications to show normal operation:

LED

Status

Description

Power 

GREEN

Card is ON

SYS 

GREEN 

Copper network connection

SYS 

BLUE

Fiber network connection

PCoIP 

GREEN / GREEN flash

Teradici OK

LINK 

GREEN / GREEN flash

Network traffic indication

SPEED 

GREEN

1 Gbit network available

AMBER

100 Mbit network available

Firmware updates

After setup, it is important to update the 

firmware

. See the 

manual

 for details.

Troubleshooting

LED

Status

Description

SYS

RED flash

Card error

SYS

GREEN/BLUE flash

Network detected, no link

PCoIP

RED

Teradici error

LINK

OFF

No network connection or unrecognized SFP module

SPEED

OFF

No network connection or unrecognized SFP module

Disable temporal dithering

Temporal dithering is a technique that graphics cards use to generate 

intermediate colors, by rapidly alternating a pixel between two adjacent color 

values. Enabling temporal dithering on a machine using PCoIP can result in high 

bandwidth usage and poor performance. To disable temporal dithering:

Apple MACs:

 see 

AN - 057 Disable Temporal Dithering on macOS and OS X

 on 

the support site for how to do this.

Windows PCs and workstations:

 see 

KBA - 144 Disable temporal dithering on 

Windows

 on the support site for how to do this.

Connect to a soft client

Configuration of the DXR-H4 is dependent on the specific host and client 

operating systems.  Contact Technical Support for further information.

Operation of the front panel buttons

 

ƒ

Power:

 Press once to take the DXR-H4 unit in or out of standby. Press 

and hold the button for more than four seconds to reset the unit.   

 

ƒ

Fn:

 Press the button for more than four seconds to activate the ID 

mode. With multiple DXR-H4 units, flashing LEDs on the cards help you 

match the host card to its personality module. 

Enable the Management Interface (MI)

With the unit on, press and hold both the Fn and Power buttons. 

The LEDs turn off briefly then flash ORANGE.

Release the Fn and Power buttons at the same time and wait for an audible 

beep (see the 

manual

 for full details). 

Safe power-down

To turn the unit off correctly, press the Power button once and wait for the unit 

to enter standby before removing the unit or power from the rack.

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