ATEN CM1942 User manual

CM1942
2-Port 4K DisplayPort Dual Display
Mini-Matrix Boundelss KVM Switch
User Manual

CM1942 User Manual
ii
Compliance Statements
FEDERAL COMMUNICATIONS COMMISSION INTERFERENCE
STATEMENT
This equipment has been tested and found to comply with the limits for a Class
B digital service, pursuant to Part 15 of the FCC rules These limits are
designed to provide reasonable protection against harmful interference in a
residential installation Any changes or modifications made to this equipment
may void the user’s authority to operate this equipment This equipment
generates, uses, and can radiate radio frequency energy If not installed and
used in accordance with the instructions, may cause harmful interference to
radio communications However, there is no guarantee that interference will
not occur in a particular installation If this equipment does cause harmful
interference to radio or television reception, which can be determined by
turning the equipment off and on, the user is encouraged to try to correct the
interference by one or more of the following measures:
Reorient or relocate the receiving antenna
Increase the separation between the equipment and receiver
Connect the equipment into an outlet on a circuit different from that to
which the receiver is connected
Consult the dealer or an experienced radio/TV technician for help
The device complies with Part 15 of the FCC Rules Operation is subject to the
following two conditions: (1) this device may not cause harmful interference,
and (2) this device must accept any interference received, including
interference that may cause undesired operation
FCC Caution: Any changes or modifications not expressly approved by the
party responsible for compliance could void the user's authority to operate this
equipment
KCC Statement

CM1942 User Manual
iii
Industry Canada Statement
This Class B digital apparatus complies with Canadian ICES-003
HDMI Trademark Statement
The terms HDMI, HDMI High-Definition Multimedia Interface, and the
HDMI Logo are trademarks or registered trademarks of HDMI Licensing
Administrator, Inc
RoHS
This product is RoHS compliant

CM1942 User Manual
iv
User Information
Online Registration
Be sure to register your product at our online support center:
Telephone Support
For telephone support, call this number:
User Notice
All information, documentation, and specifications contained in this manual
are subject to change without prior notification by the manufacturer The
manufacturer makes no representations or warranties, either expressed or
implied, with respect to the contents hereof and specifically disclaims any
warranties as to merchantability or fitness for any particular purpose Any of
the manufacturer's software described in this manual is sold or licensed as is
Should the programs prove defective following their purchase, the buyer (and
not the manufacturer, its distributor, or its dealer), assumes the entire cost of all
necessary servicing, repair and any incidental or consequential damages
resulting from any defect in the software
The manufacturer of this system is not responsible for any radio and/or TV
interference caused by unauthorized modifications to this device It is the
responsibility of the user to correct such interference
The manufacturer is not responsible for any damage incurred in the operation
of this system if the correct operational voltage setting was not selected prior
to operation PLEASE VERIFY THAT THE VOLTAGE SETTING IS
CORRECT BEFORE USE
International http://eservice.aten.com
International 88 -2-8 92- 959
China 8 -400-810-0-810
Japan 81-3-5 15-5811
Korea 82-2-4 7- 789
North America 1-888-999-ATEN ext 4988
1-949-428-1111

CM1942 User Manual
v
Product Information
For information about all ATEN products and how they can help you connect
without limits, visit ATEN on the Web or contact an ATEN Authorized
Reseller Visit ATEN on the Web for a list of locations and telephone numbers:
International http://www.aten.com

CM1942 User Manual
vi
Package Contents
Check to make sure that all the components are in working order If you
encounter any problem, please contact your dealer
1 CM1942 2-Port 4K DisplayPort Dual Display Mini-Matrix Boundless
KVM Switch
4 DisplayPort cables
2 microphone cables
2 speaker cables
2 USB 3 0 Type-A to Type-B cables
1 remote port selector
1 power adapter
1 user instructions
Note: 4K video resolution needs the high quality DisplayPort Cable

CM1942 User Manual
vii
Contents
Compliance Statements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ii
User Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iv
Online Registration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iv
Telephone Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iv
User Notice . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . iv
Product Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . v
Package Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vi
Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vii
About this Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . x
Conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xi
1. Introduction
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Console . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Computers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Operating Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Buzzer Behavior . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2. ardware Setup
Cable Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Installation Diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3. Basic Operation
Port Switching . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Manual Switching . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Mouse Switching . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Hotkey Switching. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Remote Port Selector Switching . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Boundless Switching . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Hot Plugging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Powering Off and Restarting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Port ID Numbering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Alternative Manual Port Selection Settings. . . . . . . . . . . . . . . . . . . . . . . . 13
4. otkey Operation
Port Switching . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
Cycling Through the Ports. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Going Directly to a Port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Boundless Switching with a Mouse Cursor . . . . . . . . . . . . . . . . . . . . 19

CM1942 User Manual
viii
Auto Scanning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Hotkey Setting Mode (HSM) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Invoking HSM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Alternate HSM Invocation Keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Alternate Port Switching Keys. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Keyboard Operating Platform . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
List Switch Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
USB Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Keyboard Language . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Buzzer Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Hotkey Port Switching. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Firmware Upgrade Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Restore Default Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Power on Detection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Alternative Manual Port Selection Settings. . . . . . . . . . . . . . . . . . . . . 25
Keyboard Emulation Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Mouse Emulation Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Mouse Port Switching . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Setting the PC Operation Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
N-Key Rollover Keyboard Supporting Function . . . . . . . . . . . . . . . . . 2
Boundless Switching. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Setting the Screen Resolution. . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Configuring the Monitor Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Example 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Example 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Example 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Example 4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Stereo Audio Mixer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
HSM Summary Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
5. Keyboard Emulation
Mac Keyboard. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Sun Keyboard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
6. The Firmware Upgrade Utility
Before You Begin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Starting the Upgrade . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Upgrade Succeeded . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Upgrade Failed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
7. Appendix
Safety Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Technical Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
International . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

CM1942 User Manual
ix
North America . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45
Hotkey Default Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Limited Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

CM1942 User Manual
x
About this Manual
This User Manual is provided to help you get the most from your CM1942 unit
It covers all aspects of installation, configuration and operation An overview
of the information found in the manual is provided below
Chapter 1, Introduction, introduces you to the CM1942 Its purpose,
features and benefits are presented, and its front, side, and back panel
components are described
Chapter 2, ardware Setup, describes how to set up your installation The
necessary steps are provided
Chapter 3, Basic Operation, explains the fundamental concepts involved
in operating the CM1942
Chapter 4, otkey Operation, details all of the concepts and procedures
involved in the Hotkey operation of your CM1942 installation
Chapter 5, Keyboard Emulation, provides tables that list the PC to Mac
and PC to Sun keyboard emulation mappings
Chapter 6, The Firmware Upgrade Utility, explains how to use the
CM1942's firmware with the latest available versions
Appendix, which provides specifications and other technical information
regarding the CM1942
Note:
Read this manual thoroughly and follow the installation and operation
procedures carefully to prevent any damage to the unit or any connected
devices
The product may be updated, with features and functions added, improved
or removed since the release of this manual For an up-to-date user
manual, visit http://www aten com/global/en/

CM1942 User Manual
xi
Conventions
This manual uses the following conventions:
Monospaced Indicates text that you should key in.
[ ] Indicates keys you should press. For example, [Enter] means to
press the Enter key. If keys need to be chorded, they appear
together in the same bracket with a plus sign between them:
[Ctrl+Alt].
1. Numbered lists represent procedures with sequential steps.
♦Bullet lists provide information, but do not involve sequential steps.
>Indicates selecting the option (on a menu or dialog box, for
example), that comes next. For example, Start > Run means to
open the Start menu, and then select Run.
Indicates critical information.

CM1942 User Manual
xii
This Page Intentionally Left Blank

1
Chapter 1
Introduction
Overview
The CM1942 2-Port 4K DisplayPort Dual Display Mini-Matrix Boundless
KVM Switch, combining a 2-port DisplayPort switch and a 2-port USB 3 1
Gen 1 hub,is designed to provide instant access to two DisplayPort computers
via a single USB / HDMI console The CM1942 features two PC Operation
Modes to facilitate KVM switching in a 2x2 PC / monitor matrix In Single PC
Mode, content of the PC with the current KVM focus can be displayed over
both monitors; Dual PC Mode, on the other hand, allows content of both PCs
to be displayed separately on two monitors regardless of the KVM focus
Advanced video support provides a better-defined HDMI connection with
vivid video resolutions up to 4K DCI (4096 x 2160 @ 60 Hz) With the
CM1942, users can quickly and effortlessly switch between two computers by
using convenient pushbuttons, hotkeys, mouse wheel, mouse cursor, and
remote port selector Featuring Boundless Switching, the CM1942 allows
users to simply move the mouse cursor across windows to switch to other video
sources This makes it easier to instantly access and control a target computer
With the built-in 2-port USB 3 1 Gen 1 hub, access to connected peripherals is
easy between two computers while peripheral is independent of the KVM
focus In addition, the CM1942 allows data transfer rates up to 5 Gbps for
maximum multimedia operation efficiency, making desktop multitasking
effortless and more productive
Engineered to meet the ever-increasing demand for dual display, ultra-fast data
transmission rates, and lossless 4K video resolution, the CM1942 is
specifically designed for applications in which multitasking is vital such as
graphic design, financial trading, and video post production

CM1942 User Manual
2
Features
One dual-view USB / HDMI console controls two DisplayPort computers
and two USB 3 1 Gen 1 peripherals
Two PC Operation Modes
Single PC Mode – allows content of the PC with current KVM focus to
be displayed over both monitors
Dual PC Mode – allows content of two PCs to be displayed separately
on two monitors regardless of the KVM focus
Supports superior video quality – resolutions up to 4K DCI (4096 x 2160
@ 60Hz)
Computer selection via pushbuttons, hotkeys, mouse wheel
1
, mouse
cursor, and remote port selector
Boundless Switching – allows the mouse cursor to move across screen
borders for quick switching between video sources
Video DynaSync™ – exclusive ATEN technology eliminates boot-up
display problems and optimizes resolutions when switching between ports
Audio Mixer Mode – mixes up to two audio sources as one audio output
DisplayPort 1 2
2
, HDMI, and HDCP compliant
Built-in 2-port USB 3 1 Gen 1 hub with SuperSpeed 5 Gbps data transfer
rates
Power on detection
Console mouse port emulation / bypass feature supports most mouse
drivers and multifunction mice
Console keyboard emulation / bypass feature supports most multimedia
keyboards
Multilingual keyboard mapping - supports English, Japanese, French, and
German keyboards
Note: 1 Mouse port switching is only supported under mouse emulation
mode with a USB 3-button mouse wheel
2 For DisplayPort compliant display device, make sure to configure
the device setting to be compatible with DisplayPort 1 2 to avoid
compatibility issue

Chapter 1. Introduction
3
Requirements
Console
Two HDMI monitors capable of the highest possible resolution
A USB mouse
A USB keyboard
Microphone and speakers
Computers
The following equipment must be available on each computer:
Two DisplayPort ports
A USB Type-A port
Audio ports
Cables
To guarantee video quality, we recommend using only ATEN DisplayPort
KVM cables which are certified by the VESA Compliance Program
Note:
The quality of the display is affected by the quality of the cables We
recommend the total length from the source to the monitor to not exceed
3 3 meters (1 5 meters between the PC and the KVM switch 1 8 meters
between the KVM switch and the monitor) If you need additional cables,
please contact your dealer to purchase ATEN approved cables
If you are using DisplayPort cables that are only DP 1 1 compliant, make
sure the DisplayPort EQ setting of the monitor is set to auto or DP 1 1
Operating Systems
Windows
Mac
Linux

CM1942 User Manual
4
Components
4
3 3
2
1
5
67
910 11 14 14
12
813 13
Top View
Front View
Rear View

Chapter 1. Introduction
5
No. Component Description
Top View
1 port LEDs The LEDs will light to indicate its mode and status:
KVM
 Lights DIM ORANGE to indicate that the computer
attached to the corresponding port is connected (online).
 Changes to BRIGHT ORANGE to indicate that the com-
puter attached to its corresponding port is the one that has
the KVM focus (Selected).
 Flashes to indicate that the computer attached to its corre-
sponding port is being accessed under Auto Scan mode.
 All LEDs flash together to indicate Firmware Upgrade
Mode is in effect.
USB
 Lights GREEN to indicate that the computer attached to its
corresponding port is the one that has access to the USB
peripherals.
Audio
 Lights GREEN to indicate that the audio is being outputted
from the corresponding port(s).
2 mode selection
pushbutton
The LEDs will light to indicate its mode and status:
 Press and hold mode selection pushbutton and the remote
port selector pushbutton before powering on to enter Firm-
ware Upgrade Mode. See The Firmware Upgrade Utility,
page 35.
 Press the mode selection pushbutton to switch between
Single PC Mode and Dual PC Mode.
 Single PC Mode – operate with one PC, and view the
content of the same PC at a time.
 Dual PC Mode – operate with the first PC, and view
the content of the second PC at a time.
Audio KVM USB Audio KVM USB
Single
PC
Dual
PC
Audio KVM USB Audio KVM USB
Single
PC
Dual
PC

CM1942 User Manual
3 port selection
pushbuttons
For manual port selection (see Manual Switching, page 11):
 Press a switch for less than two seconds to bring the KVM,
USB hub, and audio focus to the computer attached to its
corresponding port.
 Press a port selection pushbutton for longer than two sec-
onds to only bring the KVM focus to the computer attached
to its corresponding port.
 Press a port selection pushbutton twice to bring the audio
focus to the computer attached to its corresponding port.
 Press port selection pushbuttons 1 and 2 simultaneously
for 2 seconds to start Auto Scan Mode (see Boundless
Switching with a Mouse Cursor, page 19).
Front View
4 audio jacks Your main console microphone and speakers plug in here.
Note: The microphone and speakers plugged into the front
panel have priority over those plugged into the rear panel.
5 USB 3.1 Gen 1
Type-A port
USB peripherals (printers, scanners, drives etc.) plug into this
port. This USB 3.1 Gen 1 port features 5 Gbps data transfer
rates for compatible USB peripherals.
Rear View (Console Ports Section)
USB 2.0 Type-A
ports
The cables from your keyboard ( ), mouse ( ), monitors (7),
microphone (8), and speakers (8) plug in here. Each
connector is marked with an appropriate icon to indicate
itself.
7 HDMI out
8 audio jacks
9 USB 3.1 Gen 1
Type-A port
USB peripherals (printers, scanners, drives etc.) plug into this
port. This USB 3.1 Gen 1 port features 5 Gbps data transfer
rates for compatible USB peripherals.
10 power jack The power adapter cable plugs into this jack.
11 remote port
selector jack
The remote port selector plugs in here.
Rear View (KVM Ports Section)
12 DisplayPort in The monitor cables that link the switch to your computers
plug in here. Each KVM port section is comprised of a
microphone jack, speaker jack, USB Type-B port, and two
DisplayPort connectors.
No. Component Description

Chapter 1. Introduction
7
13 audio jacks The audio cables that link the switch to your computers plug
in here. Each KVM port section is comprised of a microphone
jack, speaker jack, USB Type-B port, and two DisplayPort
connectors.
14 USB Type-B
ports
The USB Type-A to USB Type-B cables that link the switch to
your computers plug in here. Each KVM port section is
comprised of a microphone jack, speaker jack, USB Type-B
port, and two DisplayPort connectors.
No. Component Description

CM1942 User Manual
8
Buzzer Behavior
Refer to Buzzer Control on page 24 if you wish to turn the buzzer on or off.
Sound Description
1 beep
 Changing port
 Activating auto-scan mode
 Pausing/resuming auto-scan
1 long beep
 Powering on the unit
 Resetting the unit
2 beeps
 Interrupting auto-scan
 Entering keyboard emulation off mode
 Finishing USB synchronization