Amulet Hotkey DXT-H4 User manual

®
Quad display KVM ExtEndEr Host
User manUal
DXT-H4 and DXT-H4 SFP variant
HB-THA4-1110
Revision 1.0 September 2017

Thank you
Thank you from everyone at Amulet Hotkey for purchasing this
product. Much me and energy has gone into making this the
best and most reliable soluon available. We are condent we
have provided a state-of-the-art unit that will provide you with
long and reliable service regardless of the applicaon.
To get the best from this product, follow this manual carefully.
Shipment and product inspecon
Your product was carefully packed prior to despatch to
guarantee safe transit. Make sure you thoroughly examine all
packaging and contents for signs of physical damage before use.
If any damage has occurred, nofy the shipping company and
your supplier immediately. Otherwise, claims for damage or
replacement may not be granted.
Retain the original packaging for use in the event that the
equipment has to be stored, shipped or returned for service.
If you choose to dispose of the packaging, please do so in an
environmentally friendly fashion.
Technical support
If you have further quesons , do not hesitate to contact
Amulet Hotkey technical support for expert assistance:
EMEA
[phone]
[e-mail]
N America
[phone]
[e-mail]
South America
[e-mail]
Asia Pacic
[phone]
[e-mail]
Or look at the resources page on our website:
hps://resources.amulethotkey.com/resources.
CAUTION
To prevent damage to the DXT-H4:
• install in accordance with these instrucons;
• always turn o and unplug the host computer
before handling the unit;
• always use appropriate an-stac handling
procedures when handling the unit;
• only use aachments and accessories
approved by Amulet Hotkey;
• do not expose the unit to moisture;
• do not place objects lled with liquids on or
near the unit;
• clean the unit only with a dry cloth;
• refer all servicing to qualied personnel.
©2017 Amulet Hotkey Ltd. All rights reserved.
The informaon contained in this document represents the current view of Amulet Hotkey® as of the date of publicaon. Because Amulet Hotkey must respond to
changing market condions, it should not be interpreted to be a commitment on the part of Amulet Hotkey, and Amulet Hotkey cannot guarantee the accuracy of any
informaon presented aer the date of publicaon. Secons of this document are reproduced with the kind permission of Teradici®Corp. This document is for informa-
onal purposes only. Amulet Hotkey make no warranes, express, implied or statutory, as to the informaon in this document. Complying with all applicable copyright
laws is the responsibility of the user. Without liming the rights under copyright, no part of this document may be reproduced, stored in or introduced into a retrieval
system, or transmied in any form or by any means (electronic, mechanical, photocopying, recording, or otherwise), or for any purpose, without express wrien per-
mission from Amulet Hotkey. Amulet Hotkey may have patents, patent applicaons, trademarks, copyrights, or other intellectual property rights covering subject maer
in this document. Except as expressly provided in any wrien license agreement from Amulet Hotkey, the furnishing of this document does not give you any license to
these patents, trademarks, copyrights, or other intellectual property. Teradici, PC-over-IP, and PCoIP are registered trademarks of Teradici Corporaon. VMware and View
are registered trademarks of VMware Corp. Amulet Hotkey and ‘soluons you can bank on’ are trademarks of Amulet Hotkey Ltd. The names of actual companies and
products menoned herein may be the trademarks of their respecve owners.
Product Information
Page 2
LASER SAFETY
The DXT-H4 SFP variant may be ed with SFP
network modules that contain Class 1 lasers. The
SFP module emits invisible radiaon which can
cause harm if installed or serviced incorrectly.
Follow the guidelines below:
Warning: Class 1 laser product.
Warning: Invisible laser radiaon can be
emied from the aperture of the SFP port
when no bre is connected. To avoid exposure
to laser radiaon, do not stare into open
apertures.
Warning: Only trained and qualied personnel
may install, replace, or service this equipment.

FCC Noce
This device complies with part 15 of the FCC Rules. Operaon is subject to the following
two condions: (1) This device may not cause harmful interference, and (2) this device must
accept any interference received, including interference that may cause undesired operaon.
Title 47, Part 15 (47 CFR 15) of the Federal Communicaons Commission (FCC) Rules and
Regulaons establishes Radio Frequency (RF) emission limits for unlicensed emissions to
provide an interference-free radio frequency spectrum. Many electronic devices, including
computers, generate RF energy incidental to their intended funcon and are, therefore,
covered by these rules. These rules place computers and related peripheral devices into
two classes, A and B, depending upon their intended installaon. Class A devices are those
that may reasonably be expected to be installed in a business or commercial environment.
Class B devices are those that may reasonably be expected to be installed in a residenal
environment (personal computers, for example). The FCC requires devices in both classes to
bear a label indicang the interference potenal of the device as well as addional operang
instrucons for the user. A label on the device shows which class (A or B) the equipment falls
into. Class B devices have an FCC logo or FCC ID on the label. Class A devices do not have an
FCC logo or FCC ID on the label.
The DXT-H4 has been tested and found to comply with the limits for a Class A digital device,
as dened by Part 15 of the FCC Rules. These limits are designed to provide reasonable
protecon against harmful interference when the equipment is operated in a commercial
environment. This equipment generates, uses, and can radiate radio frequency energy and,
if not installed and used in accordance with the instrucons, may cause harmful interference
to radio communicaons. Operaon of this equipment in a residenal area is likely to cause
harmful interference, in which case the user will be required to correct the interference at
their own expense.
EU Noce
• This product complies with EMC Direcve 2014/30/EU and the Low Voltage Direcve
2014/35/EU. Conformity is shown by compliance with the applicable requirements of
the following documents:
• EN 55032 (CISPR 32) (Class A) - Emissions
• EN 55024 (IEC 61000-4-2,3,4,5,6,8,11) - Immunity
• EN 61000-3-2 (IEC 61000-3-2) - Power Line Harmonics
• EN 61000-3-3 (IEC 61000-3-3) - Power Line Flicker
• EN 60950 (IEC 60950) - Product Safety
Cauon:! This equipment is compliant with Class A of CISPR 32. In a residenal environment
this equipment may cause radio interference.
Cauon:! The CE/EMC compliance is tested with video, USB and audio cables that are no
longer than 3 m long.
Quad Display KVM Extender Host
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Product Information
Page 4
Contents
1. Before you start ................................... 9
1.1 DXT-H4 models......................................... 9
1.1.1 Network soluons ............................................ 9
1.1.2 Rack soluon .................................................... 9
1.1.3 Terminology...................................................... 9
1.2 SFP modules............................................. 9
1.3 IP and MAC addresses.............................. 9
1.4 Cabling ..................................................... 9
1.5 Cooling ................................................... 10
1.6 Posioning ............................................. 10
1.6.1 How to install the mounng bracket ..............10
2. Your DXT-H4....................................... 11
2.1 Front panel features............................... 11
2.2 Rear panel features................................ 12
2.3 Status LED descripons.......................... 13
2.3.1 Front panel status LEDs .................................. 13
2.3.2 Rear panel status LEDs ...................................13
2.3.3 Key.................................................................. 13
2.3.4 Power LED ...................................................... 13
2.3.5 SYS status LED.................................................13
2.3.6 PCoIP LED .......................................................14
2.3.7 SPEED status LED: ...........................................14
2.3.8 LINK status LED............................................... 14
2.4 Buon operaon.................................... 14
2.4.1 Power ............................................................. 14
2.4.2 Fn ................................................................... 14
3. Set up the DXT-H4. ............................. 15
3.1 STEP 1: Prepare the PC, workstaon or
server ..................................................... 15
3.2 STEP 2: Connect the DXT-H4 to the host PC
............................................................... 15
3.3 STEP 3: Connect the DXT-H4 to the
network.................................................. 16
3.4 STEP 4: Change the default IP address... 16
3.5 STEP 5: Connect a zero client to the
DXT-H4 ................................................... 17
3.5.1 Connect to a DXT-H4 using SLP Discovery ......17
3.6 STEP 6: Change the default password.... 17
3.7 Further reading ...................................... 17
4. Introducon to PCoIP......................... 19
4.1 What is PCoIP?....................................... 19
4.1.1 Host rendering................................................19
4.1.2 Mul-codec display processing ......................20
4.1.3 Dynamically adapts to network condions ....20
4.2 About PCoIP hosts.................................. 20
4.2.1 Host funcon.................................................. 20
4.2.2 Host types....................................................... 20
4.3 About PCoIP zero clients........................ 20
4.3.1 Funconality................................................... 20
4.3.2 Data handling .................................................20
4.4 Benets of PCoIP zero clients................. 20
4.4.1 Increased security ..........................................20
4.4.2 Low maintenance ........................................... 21
4.4.3 Cost savings .................................................... 21
4.5 PCoIP management tools....................... 21
4.5.1 PCoIP Management Console .......................... 21
4.5.2 Administrave Web Interface (AWI)...............22
4.5.3 On Screen Display (OSD).................................22

Quad Display KVM Extender Host
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7. Addional informaon....................... 29
7.1 Dual IP conguraon.............................. 29
7.2 Manage the DXT-H4 ............................... 29
7.2.1 Teradici Administrave Web Interface (AWI) .29
7.2.2 Amulet Hotkey Management Interface (MI) ..29
7.2.3 Enable the connecon to the Management
Interface ......................................................... 29
7.3 Login to the management interfaces..... 29
7.3.1 To login with the AWI ..................................... 29
7.3.2 To login with the Amulet Hotkey Management
Interface ......................................................... 30
7.4 Check the DXT-H4 rmware ................... 31
7.4.1 Keep rmware up to date............................... 31
7.4.2 Check the Teradici rmware ...........................31
7.4.3 Check the Amulet Hotkey rmware versions .31
7.5 Update the DXT-H4 rmware................. 31
7.5.1 Update the Teradici rmware.........................31
7.5.2 Update the Amulet Hotkey rmware .............31
7.6 Addional funconality ......................... 32
7.7 Disable the Management Interface ....... 32
7.8 How to remove the DXT-H4 ................... 32
8. Technical specicaons ...................... 33
8.8.1 Warranty.........................................................33
8.8.2 Technology ..................................................... 33
8.8.3 Environment................................................... 34
5. Set up a PCoIP session........................ 23
5.1 Power up the zero client ........................ 23
5.2 Types of PCoIP session .......................... 23
5.2.1 Auto Detect ....................................................23
5.2.2 Connect directly to a specied host ..............23
5.2.3 Connect to a choice of hosts using SLP
Discovery ........................................................24
5.2.4 PCoIP Connecon Manager............................24
5.2.5 PCoIP Connecon Manager + Auto-Logon .....24
5.2.6 Connect using VMware View .........................24
5.2.7 Connect with View Connecon Server and
Auto-Logon..................................................... 24
5.2.8 Connect using a connecon broker................24
5.3 Set an automac connecon ................. 25
5.4 Disconnect from a host PC or virtual
desktop .................................................. 25
5.5 Further informaon ............................... 25
6. Manage the network ......................... 27
6.1 Consider network bandwidth
requirements ......................................... 27
6.1.1 Factors aecng bandwidth ........................... 27
6.1.2 What happens when available bandwidth is
exceeded ........................................................ 27
6.2 Choose a connecon broker if required 27
6.2.1 Role of the connecon broker........................27
6.2.2 Specify the connecon broker........................ 28
6.2.3 Using the connecon broker ..........................28

Contents
Page 6
List of gures
Figure 1:...................................................................................... .10
Figure 2:.................................................................................... .10
Figure 3:............................................................................ .10
Figure 4:.......................................................................................................................... .11
Figure 5: ....................................................................................................... .12
Figure 6: .......................................................................................................... .13
Figure 7: ............................................................................ .13
Figure 8: ..................................................................................................................... .15
Figure 9:........................................................................................................................ .16
Figure 10:......................17
Figure 11: ....................................................................................................................... .19
Figure 12: ........................................................................................ .21
Figure 13: ........................................................................................................ .22
Figure 14: ........................................................................................................................ .22
Figure 15:...................................................................................................... .23
Figure 16:........................................................................................................ .23
Figure 17:.................... 
Figure 18: ................................................................................................... 
Figure 19: ................................................................................. 
Figure 20: .................................................................................................. .25
Figure 21:......................................................................................................... .25
Figure 22: ......................................................................................................... .29
Figure 23: ............................................................................................................................ .30
Figure 24: ........................................................................................................................................ .30

Quad Display KVM Extender Host
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List of tables
Table 1: ............................................................................................................... .13
Table 2:................................................................................................... .13
Table 3:............................................................................................................ 
Table 4:............................................................................................... 
Table 5: ............................................................................................................... 
Table 6: .................................................................................................................. 
Table 7:............................................................................................................ .21
Table 8: .......................................................................................................... .27
Table 9: ................................................................................... .33
Table 10:............................................................................................................ 
Figure 25: .......................................................................................................... .30
Figure 26:........................................................................................................ .30
Figure 27: ..........................................................................31
Figure 28:............................................................................................................... .31
Figure 29: .............................................................................................................. .31

Contents
Page 8

www.amulethotkey.com | Page 9
Before you start 1
1. Before you start
This manual is for the Amulet Hotkey DXT-H4 Quad Display KVM
Extender Host.
The Amulet Hotkey DXT-H4 is based on KVM-over-IP technology
using the industry standard PCoIP® protocol. It is an ideal host
soluon for remote desktop applicaons that require pixel
perfect video across mulple monitors.
1.1 DXT-H4 models
The DXT-H4 is a Quad Display KVM Extender Host with its own
power supply. The following variaons are also available.
1.1.1 Network soluons
RJ45: The standard DXT-H4 unit has a single RJ45 network
port;
SFP: The DXT-H4 is also available with a single network port
that accepts either a ber or copper SFP module (see 1.2 and
Figure 5).
1.1.2 Rack soluon
A rack-mounted variant of this product, the DXR-H4 Quad
Display KVM Extender Host card is also available.
1.1.3 Terminology
The general terms ‘PCoIP host’ or ‘host’ are used throughout
this manual to describe all product variants.
1.2 SFP modules
Amulet Hotkey can provide a range of suitable SFP modules,
including 1 Gbps and 100 Mbps ber SFP modules for single or
mul-mode ber and copper SFP modules with RJ45 connectors.
See the Amulet Hotkey SFP Modules Datasheet for details of
currently available modules.
Be aware that SFP modules have diering specicaons, and
the distances over which they can drive a signal can vary. This
especially applies to ber SFP modules.
Important! The SFP variant only supports certain models of
SFP module. If in doubt, contact Technical Support for advice.
1.3 IP and MAC addresses
Before you set up a host, make a note of these details:
• MAC and IP address of the external PCoIP host;
• MAC and IP address of the zero client.
You will nd the MAC address informaon wrien on the
underside of the zero client and on the conguraon record/
serial number label of the host. You can also use the AWI (see
4.5.2) to nd the MAC addresses.
If your network uses DHCP, the host and zero client obtain
their IP addresses from the DHCP server. If no DHCP server is
available, the host and zero client me out aer approximately
three minutes and adopt the following default IP addresses:
• Zero client: 192.168.1.50;
• PCoIP Host: 192.168.1.100.
1.4 Cabling
The DXT-H4 comes with a Power Supply Unit (PSU) and
mains cable. You will also need the following cables, available
separately in short (1 m) and long (2.8 m to 3 m) sets:
• video cable (for example Mini DisplayPort to DisplayPort);
• two stereo audio cables;
• USB cable (type A to type B).
Note: The Amulet Hotkey audio cable loom comprises two
cables each with a blue connector at one end and a green
connector at the other. The instrucons in this manual are
specic for this parcular cable loom.
Cauon:! The CE/EMC compliance is tested with video, USB and
audio cables that are no longer than 3 m long.

Before you start
Page 10
3. Posion the unit so that the holes in the xing brackets line
up with the holes in the xing surface.
4. Install four xings (such as M4 screws) through the mounng
brackets and into the holes in the prepared surface. See Figure 3.
Figure 3: 
1.5 Cooling
The unit is passively cooled. To ensure opmum venlaon and
performance of the unit, observe the following:
1. Keep a minimum gap of 25 mm to the sides of the unit for
venlaon.
2. Do not place anything above (or stack) the unit
1.6 Posioning
A xing bracket is available to aach the unit to a stable surface.
1. The unit has rubber feet and may normally sit safely on a
horizontal surface without the need for a mounng bracket.
2. To x the unit, or If placing the unit vercally, use the
mounng bracket kit (KT-DXIT-A001) to keep the unit in posion.
1.6.1 How to install the mounng bracket
1. Prepare four holes in the surface on which you will mount
the unit. Use the measurements in Figure 1 for the posion and
size of the holes.
260 mm
Ø
4.5 mm
155.5 mm
Figure 1: 
2. Aach the two xing brackets to the DXT-H4 using the screws
and star washers in the mounng bracket kit. See Figure 2.
Figure 2: 

www.amulethotkey.com | Page 11
your DXt-H4
2. Your DXT-H4
The DXT-H4 has various LEDs, buons and sockets. This secon
describes these in full.
2.1 Front panel features
The front panel on the DXT-H4 has three LEDs and two buons.
See Figure 4 for the following descripon:
1. Power buon: Takes the unit in and out of standby. Can also
reset the unit.
2. Funcon buon: Turns the ID mode on and o. Can also
enable the management interface.
3. Power status LED: Displays the power state of the unit.
4. SYS status LED: In normal operaon, this LED shows network
acvity and connecon type.
5. PCoIP status LED: Shows the PCoIP network status.
2
Figure 4: 

Your DXT-H4
Page 12
2.2 Rear panel features
The rear panel on the DXT-H4 has sockets, status LEDs and a
funcon buon.
See Figure 5 for the following descripon:
1. Video inputs: There are four video inputs to connect up to
four video sources with Mini DisplayPort connecons.
2. Audio In/Out: There are two stereo 3.5 mm sockets, one
green and one blue, to connect the audio microphone and
speaker signals from the host workstaon or PC.
3. Network connecon: There are two models of the DXT-H4
available with either an RJ45 or SFP network socket. The SFP
variant accepts a range of copper and ber modules.
4. Funcon buon: Same funcon as the buon on the front
panel. Turns the ID mode on and o. Can also enable the
management interface.
5. Network and Status LEDs: SYS, PCoIP, SPEED and LINK
network status LEDs. See 2.3 for full LED descripons.
6. USB port: A USB type B socket for USB trac to and from the
host workstaon or PC.
7. Power: A socket to connect the PSU (supplied).
Figure 5: 

Quad Display KVM Extender Host
www.amulethotkey.com | Page 13
2.3 Status LED descripons
The status LEDs on the front and rear panels show the status of
the unit and network connecon including:
• the connecon type and speed;
• the current network acvity;
• the status of the PCoIP connecon to a zero client;
• fault indicaons.
2.3.1 Front panel status LEDs
There are three LEDs on the front panel (see Figure 6):
• Power LED, see 2.3.4;
• SYS status LED, see 2.3.5;
• PCoIP status LED, see 2.3.6.
Figure 6: 
2.3.2 Rear panel status LEDs
There are four LEDs on the rear panel (see Figure 7):
• PCoIP status LED, see 2.3.6;
• SYS status LED, see 2.3.5;
• SPEED status LED, see 2.3.7;
• and the LINK status LED, see 2.3.8.
Figure 7: 
2.3.3 Key
The tables in this secon use the following convenons:
• Color - LED is on steady;
• Flash - LED is on and o evenly;
• Blink - LED is on more than o;
• Wink - LED is o more than on.
2.3.4 Power LED
Tells you the power status of the DXT-H4.
LED status Meaning
O Unit is in standby
Green Unit is ON
2.3.5 SYS status LED
Tells you the state of the system and the network link.
1. When the unit is in STANDBY:
LED status Meaning
Red Unit is in standby, no wake mode enabled
Amber Unit is in standby with Wake-on-LAN enabled
Amber ash
Amber/Blue ash
Unit is starng up
Table 1: 
2. When the unit is ON:
LED status Meaning
Amber wink Unit is powering down
Amber/Red ash Unit has a fault. Contact Technical Support
Green ash Copper network connecon is detected (SFP
module or RJ45). No network link is established
Green Copper network connecon with link
established (SFP module or RJ45)
Cyan ash Fn buon press is enabling the network
Red/O/Green/
O/Blue/O
ash
Unit is in ID mode (this mode overrides all other
indicaons)
Color cycle Red/
Amber/Green/
Cyan/Blue/
Magenta/Pink
Unit is in programming mode
Red ash Unit has a fault. Contact Technical Support
For SFP Modules only:
Blue/Green ash No SFP module inserted
Blue ash SFP ber module detected; no network
connecon
Blue SFP ber module detected; connected to
network
Table 2: 

Your DXT-H4
Page 14
2.4 Buon operaon
There are two buons on the front of the unit, the Power buon
and the Fn buon. The Fn buon is also repeated on the rear of
the unit.
2.4.1 Power
a). Press the buon to put the DXT-H4 in or out of standby.
b). A long press (more than four seconds) at any me will
reset the DXT-H4.
2.4.2 Fn
a). A long press (more than four seconds) of the front or rear
Fn buon puts the SYS LEDs into ID mode.
b). Press the front Fn buon on the unit during power up
or the reset cycle to enable the Management Interface
connecon.
2.3.6 PCoIP LED
Displays the status of the PCoIP session.
1. When the unit is in STANDBY:
LED status Meaning
O Unit is in standby
Table 3: 
2. When the unit is in ON:
LED status Meaning
Green ash
Synchronized with Teradici processor
‘heartbeat’. Processor is ready but not in an
acve session
Green Unit is in an acve PCoIP session
Red Teradici processor boot fault
Table 4: 
2.3.7 SPEED status LED:
Displays the speed of the network connecon.
Status Meaning
O No network connecon
Amber 100 Mbit/s connecon
Green 1 Gbit/s connecon
Table 5: 
2.3.8 LINK status LED
Displays the status of the network connecon.
1. LINK status LED
Status Meaning
O No network connecon
Green Network connecon; no trac
Green blink Network connecon full duplex; trac
detected
Amber blink Network connecon half duplex; trac
detected (PCoIP not working)
Table 6: 

www.amulethotkey.com | Page 15
Install tHe DXt-H4
3. Set up the DXT-H4.
This secon describes how to set up your DXT-H4.
For a descripon of the unit, see 2. Your DXT-H4.
3.1 STEP 1: Prepare the PC, workstaon or server
Cauon:! Switch-o the host PC before you install the DXT-H4.
1. If possible, restart the host computer to make sure any
previous updates are successfully completed.
2. Power down the host computer.
3.2 STEP 2: Connect the DXT-H4 to the host PC
Cauon:! Make sure the power outlet is switched-o before you
connect the power supply.
Refer to Figure 8 for the following connecons:
1. For each video cable, push the DisplayPort connector into
the host PC and the Mini DisplayPort connector into the socket
on the DXT-H4 rear panel (1).
3
Cauon:! CE/EMC compliance is tested with video, USB and
audio cables that are no longer than 3 m long.
2. For the USB cable, push the USB type A plug into the host PC
and the USB type B plug into the DXT-H4 rear panel (6).
3. Connect the audio cables:
a). If using the Amulet Hotkey audio loom, push the green
and blue connectors at one end of the audio loom into
the matching green and blue sockets on the DXT-H4 rear
panel (2).
b). If using the Amulet Hotkey audio loom, push the green
and blue connectors at the other end of the audio loom
into the matching green and blue sockets on the PC audio
panel.
4. Connect the power supply to the power inlet socket on the
DXT-H4 rear panel (7).
5. Switch the power outlet ON.
6. Turn the PC ON.
Figure 8: 

Install the DXT-H4
Page 16
3.3 STEP 3: Connect the DXT-H4 to the network
Cauon:! For the best performance, isolate the PCoIP
connecon from normal network trac.
1. For the DXT-H4 SFP variant only, push the SFP module (see
Figure 9) into the network port on the rear panel (see (3) in
Figure 8).
Note This socket accepts a copper or bre SFP module. The
module can be 1 Gbit/s or 100 Mbit/s. See the SFP modules
datasheet for more details of available modules.
Figure 9: 
2. Connect the network cable from the network port (3) to your
LAN/WAN.
3.4 STEP 4: Change the default IP address
Cauon:! Change the default IP address as soon as possible.
If your network uses DHCP, the DXT-H4 obtains its IP address
from the DHCP server. If no DHCP server is available, the DXT-H4
mes out aer three minutes and adopts its default IP address
of 192.168.1.100.
All DXT-H4 units will revert to the same default IP address, this
can cause conicts as the network grows. Use the Administrave
Web Interface (AWI) to assign a dierent stac IP address from
the default.
1. Enter the default IP address of the DXT-H4 into a browser
to access the AWI. See 7.3.1 To login with the AWI for more
informaon.
2. Enter the default password ahkdante and click Log In.
3. From the Conguraon menu select the Network opon.
4. Make sure the Enable DHCP opon is unchecked.
5. Enter the new fall-back default IP address into the IP Address
elds.
6. Make sure the Enable DHCP opon is checked.

Quad Display KVM Extender Host
www.amulethotkey.com | Page 17
3.5 STEP 5: Connect a zero client to the DXT-H4
1. Install and power up a zero client.
If you are not sure how to do this, see the relevant Amulet
Hotkey user manual or Quick Start Guide for the zero client.
When the zero client is on, you are ready to establish a new
PCoIP session.
The zero client connects to the DXT-H4 via its network
connecon.
Note: We recommend reading 4. Introducon to PCoIP rst if
you are not already familiar with the concept of PCoIP.
3.5.1 Connect to a DXT-H4 using SLP Discovery
Important! This is one method you can use to quickly
connect your zero client to a host. For a detailed descripon
of all connecon methods, see 5. Set up a PCoIP session.
If the zero clients and KVM extender hosts are on the same
subnet, you can use the Direct to Host + SLP session connecon
type to discover available PCoIP hosts on the subnet.
You must know the IP address (or MAC address) of the KVM
extender host that you want to connect to.
1. Select the Direct to Host + SLP Host Discovery session
connecon type from the drop down list.
Figure 10: 

2. Select the host you want and click OK.
If the zero client successfully connects to the host, the front
panel PCoIP status LED illuminates green to indicate an acve
session.
3. (Oponal) You can also set the Enable Auto-Reconnect in the
advanced sengs to remember the last connected PCoIP host.
Note: You must also congure a Direct from Client session
connecon type on the host.
3.6 STEP 6: Change the default password
1. For security, we recommend that you change the default
password for your DXT-H4 at the earliest possibility.
Important! You must enter a password before changing
the conguraon of host units and zero clients. The factory
pre-set password for all Amulet Hotkey host units and zero
clients is ahkdante.
3.7 Further reading
If you wish to read further about network consideraons, refer
to 6. Manage the network.
For any conguraon or deployment issues refer to
7. Addional informaon or contact Technical Support
department (see contact details at the start of this manual).

Install the DXT-H4
Page 18

www.amulethotkey.com | Page 19
IntroDuctIon to PcoIP 4
Figure 11: 
4. Introducon to PCoIP
4.1 What is PCoIP?
The PCoIP (PC-over-IP) protocol compresses, encrypts and
encodes the enre compung experience on a host PC. In a
PCoIP system, a PCoIP host transmits the compung experience
from a host PC (pixels only) across a standard IP network to a
remote zero client. Actual data never leaves the host PC and all
pixel transfers are encrypted with advanced security algorithms.
PCoIP supports high resoluon, full frame rate 3D graphics and
HD media, mulple large displays, full USB peripheral
connecvity, and high denion audio, all connected over the
corporate LAN or WAN.
PCoIP technology allows all desktops in your enterprise to be
centrally located and managed in a data centre, while providing
remote users with full desktop performance. This may be in a
geographically remote locaon if necessary.
There are three essenal features of PCoIP:
• Host rendering;
• Mul-codec display processing;
• Dynamically adapts to network condions.
4.1.1 Host rendering
PCoIP renders display images on the host PC (or virtual
machine). Host rendering preserves the PC environment so
applicaons perform correctly. Aer an image is rendered on
the host, PCoIP broadcasts just the encrypted pixels (not data)
across the network to the remote client. (See 4.2 for more
details). The remote clients are stateless, decode-only client
devices – called zero clients – with all the benets they bring,
such as low maintenance, increased security, and cost savings.
Note: This is an advantage over other remote protocols that
use client rendering. To render an image on the client; each
command from the host and response from the client must
travel across the network. This degrades an applicaon’s
performance while it waits for image rendering to complete.
A DXT-H4 (1) connected to a closed host system (2) facilitates a remote desktop
connecon over a LAN/WAN (3) to a zero client (4) with quad video heads (5)

Introduction to PCoIP
Page 20
4.3 About PCoIP zero clients
PCoIP zero clients are secure, hardware-based endpoints that
allow users to connect to a remote host PC or virtual desktop
over a local or wide area IP network. They support mulple
wide-screen formats, HD audio, and local USB peripherals,
providing a rich mulmedia experience for users.
4.3.1 Funconality
Zero clients can take many form factors, for example, as rack-
mounted cards. Amulet Hotkey DXZ4 zero clients are small,
cased devices for your desktop.
Users can interact with their desktops from any type of zero
client and can even connue the same session if they move
between zero client devices.
4.3.2 Data handling
PCoIP zero clients use a highly integrated Tera-series processor
to perform image decompression and decoding. At the desktop,
they decrypt, decompress and distribute video, audio and USB
data to the standard desktop peripherals, such as monitors,
keyboard, mouse, and speakers or headset. A zero client also
passes user-generated USB and audio data back to a remote
PCoIP host (see 4.2).
To ensure desktop responsiveness, the process of image com-
pression-encrypon-transmission by the PCoIP host and then
decrypon-decompression by the zero client happens very
quickly, typically in just one frame (or less than 15 msecs).
4.4 Benets of PCoIP zero clients
Because zero clients just decode pixels to display images, they
can be far simpler and more secure than a tradional desktop PC
and other thin client soluons. They oer:
• Increased security;
• Low maintenance;
• Cost savings.
4.4.1 Increased security
As PCoIP zero clients have a stateless architecture and no local
data storage, they are the most secure endpoint available.
Pixel transfers to the zero client are encrypted with advanced
security algorithms. Zero clients are also immune to viruses
and never need an-virus updates. Finally, zero clients comply
with the most stringent government and security mandates. In
parcular, they support robust USB hardware security author-
izaon, including user authencaon and single sign-on (SSO)
based on smart cards, proximity cards and other SSO devices.
4.1.2 Mul-codec display processing
A PC display includes dierent types of image elements (text,
graphics, icons, video). Using the same codec to encode all these
elements would use excessive network bandwidth. Instead,
PCoIP connuously analyses and decomposes image elements,
using the right codec for each pixel.
PCoIP’s intelligent image decomposion and encoding results in
ecient transmission and decoding. This saves bandwidth while
delivering the best user experience. In addion, PCoIP builds
every pixel to a lossless state when they stop changing, ensuring
a pixel-perfect image on the zero client regardless of network
limitaons.
4.1.3 Dynamically adapts to network condions
The PCoIP protocol lets you easily set image quality sengs to
manage bandwidth use and delivers the best possible
performance for the network condions.
On congested networks, PCoIP adapve encoders automacally
adjust image quality within the limits you set. When the network
is no longer congested, they automacally resume maximum
image quality.
4.2 About PCoIP hosts
4.2.1 Host funcon
A PCoIP host is something that converts a remote PC (or blade
workstaon) into a pixel broadcast centre. The host’s Tera-series
processor uses advanced algorithms to encode a user’s full
desktop environment, allowing the host to deliver high-end
images to a zero client in any locaon.
In a PCoIP system, the PCoIP host is installed inside or near to
the remote PC. The host takes digital video, audio and USB data
generated by the PC and compresses and encrypts this data. It
then transmits this data in real me over an IP network to the
user’s PCoIP zero client.
4.2.2 Host types
The DXT-H4 is a PCoIP host that is external to the host PC or
workstaon. Other Amulet Hotkey PCoIP hosts are available in
various form factors. Some install inside a PC while others are
located near to a PC and connect to video, USB and audio ports
using standard cables.
Amulet Hotkey also supply a range of PCoIP blade workstaons
based on the class leading Tier 1 devices from Dell. These work-
staons include Amulet Hotkey BIOS and PCIe mezzanine cards
to provide hardware GPU and PCoIP acceleraon.
See our website for more informaon.