SMART-AVI SM-UHN-8S User manual

Advanced 2/4/8 HDMI KVM Switch 1
1-800-284-2131
www.smartavi.com
USER MANUAL
Advanced 2/4/8-Port HDMI KVM Switch
SM-UHN-2S 2-Port Single-Head 4K/60Hz HDMI KVM switch
SM-UHN-2D 2-Port Dual-Head 4K/60Hz HDMI KVM switch
SM-UHN-4S 4-Port Single-Head 4K/60Hz HDMI KVM Switch
SM-UHN-4D 4-Port Dual-Head 4K/60Hz HDMI KVM Switch
SM-UHN-4Q 4-Port Quad-Head 4K/60Hz HDMI KVM Switch
SM-UHN-8S 8-Port Single-Head 4K/60Hz HDMI KVM Switch
SM-UHN series

Advanced 2/4/8 HDMI KVM Switch 2
TECHNICAL SPECIFICATIONS_____________________________________________________________ 3
WHAT’S IN THE BOX?_____________________________________________________________________ 4
SM-UHN FRONT AND REAR_______________________________________________________________ 4
INSTALLATION____________________________________________________________________________ 5-8
LED’s BEHAVIOR__________________________________________________________________________ 11
SYSTEM OPERATION______________________________________________________________________12
TROUBLESHOOTING______________________________________________________________________ 12
TECHNICAL SUPPORT_____________________________________________________________________12
LIMITED WARRANTY STATEMENT________________________________________________________ 13
Table of content

Advanced 2/4/8 HDMI KVM Switch 3
VIDEO
Format HDMI
Host Interface
SM-UHN-2S (2) HDMI 19-pin (female)
SM-UHN-2D / SM-UHN-4S (4) HDMI 19-pin (female)
SM-UHN-4D / SM-UHN-8S (8) HDMI 19-pin (female)
SM-UHN-4Q (16) HDMI 19-pin (female)
User Console
Interface
SM-UHN-2S / SM-UHN-4S / SM-UHN-8S (1) HDMI 19-pin (female)
SM-UHN-2D / SM-UHN-4D (2) HDMI 19-pin (female)
SM-UHN-4Q (4) HDMI 19-pin (female)
Max Resoluon 3840 x 2160 @ 60Hz
DDC 5 volts p-p (TTL)
Input Equalizaon Automac
Input Cable Length Up to 20 .
Output Cable Length Up to 20 .
AUDIO
Input (2) / (4) / (8) Connector Stereo 3.5mm Female
Output (1) Connector Stereo 3.5mm Female
CONTROL
Front Panel Push Buons with LED indicators
RS232 Via Serial @ 115200 bps
Hot Keys Via Keyboard
POWER
Power Requirements 12V DC, 2A (minimum) power adapter with center-pin posive polarity. Quad head models
require a 12V DC 3A (minimum) power adapter with center-pin posive polarity.
ENVIRONMENT
Operang Temp 32° to 104° F (0° to 40° C)
Storage Temp -4° to 140° F (-20° to 60° C)
Humidity 0-80% RH, non-condensing
OTHER
Emulaon Keyboard, Mouse and Video
Control Front Panel Buons
Technical Specifications
USB
Signal Type USB 2.0, 1.1, and 1.0 w/ internal hub
Type A to B
SM-UHN-2S / SM-UHN-2D (2)
SM-UHN-4S / SM-UHN-4D / SM-UHN-4Q (4)
SM-UHN-8S (8)
User Console Interface (2) USB Type-A for keyboard and mouse connecon only

Advanced 2/4/8 HDMI KVM Switch 4
SM-UHN Unit 2/4/8-port HDMI KVM Switch
PS12VDC3A 12V DC 3A (minimum) power adapter with center-pin posive polarity.
User Manual
What’s in the box?
SM-UhN-4S rear
SM-UhN-4S front
SM-UhN-8S rear
SM-UhN-8S front

Advanced 2/4/8 HDMI KVM Switch 5
Single-Head Units:
1. Ensure that power is turned o or disconnected from the unit and the computers.
2. Use a HDMI cable to connect the HDMI output port from each computer to the
corresponding DP IN ports of the unit.
3. Use a USB cable (Type-A to Type-B) to connect a USB port on each computer to the
respecve USB ports of the unit.
4. Oponally connect a stereo audio cable (3.5mm to 3.5mm) to connect the audio output
of the computers to the AUDIO IN ports of the unit.
5. Connect a monitor to the HDMI OUT console port of the unit using a HDMI cable.
6. Connect a USB keyboard and mouse in the two USB console ports.
7. Oponally connect stereo speakers to the AUDIO OUT port of the unit.
8. Finally, power on the KVM by connecng a 12VDC power supply to the power
connector, and then turn on all the computers.
Note: You can connect up to 2 computers to the 2 port KVM and up to 4 computers to the 4 port
KVM.
installation
SM-UHN-4S Shown

Advanced 2/4/8 HDMI KVM Switch 6
Mul-Head Units:
1. Ensure that power is turned o or disconnected from the unit and the computers.
2. Use HDMI cables to connect the HDMI output ports of each computer to the corre-
sponding HDMI IN ports of the unit. For example, if using SM-UHN-4Q, the four HDMI
ports of one computer must all be connected to one channel.
The HDMI IN connectors that belong to the same channel are arranged vercally.
3. Use a USB cable (Type-A to Type-B) to connect a USB port on each computer to the
respecve USB ports of the unit.
4. Oponally connect a stereo audio cable (3.5mm on both ends) to connect the audio
output of the computer to the AUDIO IN ports of the unit.
5. Connect the monitors to the HDMI OUT console ports of the unit using HDMI cables.
The HDMI IN ports on one row will be switched to the HDMI OUT of the same row.
6. Connect a USB keyboard and mouse in the two USB console ports.
7. Oponally connect stereo speakers to the AUDIO OUT port of the unit.
8. Power on the KVM by connecng a 12VDC power supply to the power connector, and
then turn on all the computers.
Installation (continued)

Advanced 2/4/8 HDMI KVM Switch 7
SM-UHN-4Q Shown
Installation (continued)
SM-UHN-2S Shown

Advanced 2/4/8 HDMI KVM Switch 8
Installation (continued)
EDID Learn:
The KVM is designed to learn the connected monitor’s EDID upon power up. In the event of
connecng a new monitor to the KVM, a power recycle is required.
The KVM will indicate to the user the EDID learn process by ashing the front panel’s LEDs. Port one
green and push buon blue LEDs will both begin to ash for about 10 seconds. When the LEDs stop
ashing, the EDID learn process is done.
If the KVM has more than one video board (such as dual-head and quad-head models), then the unit
will connue to learn the EDIDs of the connected monitors and indicate the progress of the process
by ashing the next port selecon green and push buon blue LEDs respecvely.
The monitor must be connected to the video output connector located in the console space at the
back of the KVM during the EDID learn process.
If the read EDID from the connected monitor is idencal to the current stored EDID in the KVM then
the EDID learn funcon will be skipped.

Advanced 2/4/8 HDMI KVM Switch 9
System operation
There are three ways to control the SM-UHN: Keyboard Hotkeys, RS-232 Serial Commands, and
Front Panel Buons. All modes of control will allow the user the set their desired conguraons.
front panel control
The front panel buons will funcon as the typical secure KVM switches. To switch to an input port,
simply push the desired input buon on the front-panel of the KVM. If an input port is selected, the
LED of that port will turn on.
There are 2-8 buons on the front panel of the device, depending on the model. There will be an
added EDID Learn funcon that can be triggered from the Front Panel, this will be triggered as
follows:
Hold down the First and Last buon of Front Panel for 3 seconds to force Learn EDID.
hotkey and rs232 serial control
The SM-UHN may also be controlled via RS-232 commands. To use these commands, you must use
HyperTerminal or an alternate terminal applicaon. The sengs for the connecon are as follows:
Baudrate 115200; Data Bits 8; Parity None; Stop Bits 1; Flow Control None.
Once you have connected to the SM-UHN via Serial, you will see the SM-UHN informaon when the
device starts up.
The following commands can be used for RS-232 with available keyboard hotkeys:
Command Descripon HotKey RS-232 Command
Switch all USB devices and
Main video
[CTRL][CTRL][port #]
[ENTER]
//m[port #] [ENTER]
Switch Audio Only [CTRL][CTRL] a [port #]
[ENTER]
//a [port #] [ENTER]
Switch KM Only [CTRL][CTRL] c [port #]
[ENTER]
//c[port #] [ENTER]
Switch USB Only [CTRL][CTRL] u [port #]
[ENTER]
//u[port #] [ENTER]
Learn EDID [CTRL][CTRL] e [ENTER] //e[ENTER]
Reset Soware [CTRL][CTRL] r//r[ENTER]
Status Query N/A //??[ENTER]

Advanced 2/4/8 HDMI KVM Switch 10
Custom hotkey triggers
Users are able to customize the keys that trigger Hotkeys. The default trigger for hot key funcon on
the Keyboard is Ctrl +Ctrl. The trigger funcon can be used to change to double Ctrl, Shi, or Scroll
Lock.
To view hotkey trigger seng:
Type on Keyboard: Alt + Alt + Alt + k + 0 + [Enter]
The LED Light on the user’s keyboard will Flash indicang which trigger is currently acve
Num Lock LED ash indicates CTRL
Caps Lock LED ash indicates Shi
Scroll Lock LED ash indicates Scroll Lock
To change the hotkey trigger seng:
Hotkey trigger twice + x + [1 | 2 | 3]
1 - Ctrl
2 - Shi
3 - Scroll Lock
Example: If the hotkey trigger is Shi and would like to change to Scroll Lock,
Type: Shi + Shi + x + 3