SmartAVI SM-UHN Series Advanced 2Port HDMI KVM Switch User Manual

: August 25, 2024
: SmartAVI

Table of Contents

SmartAVI SM-UHN Series Advanced 2Port HDMI KVM Switch
Product Usage Instructions
Technical Specifications
What’s in the box?
FRONT AND BACK
INSTALLATION
Custom hotkey triggers
Troubleshooting
Limited warranty statement
Read User Manual Online (PDF format)
Download This Manual (PDF format)

SmartAVI SM-UHN Series Advanced 2Port HDMI KVM Switch

Specifications

Format: HDMI2.1
Maximum Pixel Clock: 165 MHz
Input Interface:
- SM-UHN-2S: (2) HDMI
- SM-UHN-2D: (4) HDMI
Output Interface:
- SM-UHN-2S: (1) HDMI
- SM-UHN-2D: (2) HDMI
Resolution: 3840 x 2160 @ 60 Hz
Color Mode: 24-bit
DDC Input Equalization: Automatic
Input Cable Length: Up to 20 ft
Output Cable Length: Up to 20 ft
Data Rate: 1.65 Gbps per color
Console Monitors: Supports both digital and analog monitors
Audio:
- Input Interface: (2) 3.5 mm Stereo Audio
- Output Interface: (1) 3.5 mm Stereo Audio
- Impedance: 600 Ohm
- Frequency Response: 20 Hz to 20 kHz
- Nominal Level: 0-1.0 V
- Common Mode Rejection at 60 dB
USB:
- Signal Type: USB 2.0, 1.1, and 1.0 w/ internal hub
- Input Interface: (2) USB Type B (female)
- Output Interface: (2) USB Type A (female) for K/M emulation; (2) for USB 2.0 Transparent
Control:
- Front Panel Push Buttons with LED Indicators
- RS-232 DB9 Female – 115200 N,8,1, No flow control Via Keyboard
Power Adapter, Dimensions, Weight, Approvals, Operating Temperature, Storage Temperature, Humidity Emulation

Product Usage Instructions

Installation

Ensure that power is turned off or disconnected from the unit and the computers.
Connect the HDMI output port from each computer to the corresponding HDMI IN ports of the unit using HDMI cables.
Connect a USB cable (Type-A to Type-B) from a USB port on each computer to the respective USB ports of the unit.
(Optional) Connect a stereo audio cable (3.5mm to 3.5mm) from the audio output of the computers to the AUDIO IN ports of the unit.
Connect a monitor to the HDMI OUT console port of the unit using an HDMI cable.
Connect a USB keyboard and mouse to the two USB console ports.
(Optional) Connect stereo speakers to the AUDIO OUT port of the unit.
Power on the KVM by connecting 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.

System Operation
There are three ways to control the SM-UHN: Keyboard Hotkeys, RS-232 Serial Commands, and Front Panel Buttons. All modes of control will allow the user to set their desired configurations.

Front Panel Control

To switch to an input port, simply push the button on the front panel of the KVM. If an input port is selected, the LED of that port will turn on.
Hold down the button on the Front Panel for 3 seconds to force learn EDID.
Hotkey and RS-232 Serial Control

FAQ

Q: How many computers can be connected to the KVM switch?
A: You can connect up to 2 computers to the 2-port KVM switch.

SM-UHN SERIES
Advanced 2-Port HDMI KVM Switch

USER MANUAL

SM-UHN-2S	2-Port Single-Head HDMI KVM Switch
SM-UHN-2D	2-Port Dual-Head HDMI KVM Switch

Technical Specifications

VIDEO

What’s in the box?

PART NO.	Q- TY	DESCRIPTION
SM-UHN Unit	1	2-Port HDMI KVM Switch with Audio and USB 2.0 Support
PS5VDC2A	1	Power Adapter
1	User Manual

FRONT AND BACK

INSTALLATION

Ensure that power is turned off or disconnected from the unit and the computers.
Use a HDMI cable to connect the HDMI output port from each computer to the corresponding HDMI IN ports of the unit.
Use a USB cable (Type-A to Type-B) to connect a USB port on each computer to the respective USB ports of the unit.
Optionally 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.
Connect a monitor to the HDMI OUT console port of the unit using a HDMI cable.
Connect a USB keyboard and mouse in the two USB console ports.
Optionally connect stereo speakers to the AUDIO OUT port of the unit.
Finally, power on the KVM by connecting 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.

System operation

There are three ways to control the SM-UHN: Keyboard Hotkeys, RS-232 Serial Commands, and Front Panel Buttons. All modes of control will allow the user the set their desired configurations.
front panel control
To switch to an input port, simply push the button on the front-panel of the KVM. If an input port is selected, the LED of that port will turn on.
Hold down the button 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 application. The settings for the connection 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 information when the device starts up.

The following commands can be used for RS-232 with available keyboard hotkeys:

COMMAND DESCRIPTION	HOTKEY	RS-232 COMMAND
Switch All USB, Video, and Audio	[CTRL][CTRL] [port #] [ENTER]	// m

Custom hotkey triggers

Users are able to customize the keys that trigger Hotkeys. The default trigger for hot key function on the keyboard is Ctrl + Ctrl. The trigger function can be used to change to the following keys:
Ctrl (Left / Right), Alt, Shift (Left / Right), Caps Lock, Scroll Lock, F1-F12
TO VIEW HOTKEY TRIGGER SETTING
Use the RS-232 command: / + / + ? + ? + Enter to view the current HotKey Trigger To reset the Hotkey Trigger use the “Factory Defaults” command.
TO CHANGE THE HOTKEY TRIGGER SETTING
HotKey + HotKey + x + [desired hotkey]
Example: If users current Hotkey trigger is Shift and want to change to Scroll Lock, user would type Shift + Shift + x + Scroll Lock

Troubleshooting

No Power
- Make sure that the power adapter is securely connected to the power connector of the unit.
- Check the output voltage of the power supply and make sure that the voltage value is around 12VDC.
- Replace the power supply.
No Video
- Check if all the video cables are connected properly.
- Connect the computer directly to the monitor to verify that your monitor and computer are functioning properly.
- Restart the computers.
Keyboard is not working
- Check if the keyboard is properly connected to the unit.
- Check if the USB cables connecting the unit and the computers are properly connected.
- Try connecting the USB on the computer to a different port.
- Make sure that the keyboard works when directly connected to the computer.
- Replace the keyboard.
Mouse is not working
- Check if the mouse is properly connected to the unit.
- Try connecting the USB on the computer to a different port.
- Make sure that the mouse works when directly connected to the computer.
- Replace the mouse.
No Audio
- Check if all the audio cables are connected properly.
- Connect the speakers directly to the computer to verify that the speakers and the computer audio are functioning properly.
- Check the audio settings of the computer and verify that the audio output is through the speakers.

Technical support
For product inquiries, warranty questions, or technical questions, please contact info@smartavi.com.

Limited warranty statement

Extent of limited warranty
SmartAVI, Inc. warrants to the end-user customers that the SmartAVI product specified above will be free from defects in materials and workmanship for the duration of 1 year, which duration begins on the date of purchase by the customer. Customer is responsible for maintaining proof of date of purchase.
SmartAVI limited warranty covers only those defects which arise as a result of normal use of the product, and do not apply to any:
- Improper or inadequate maintenance or modifications
- operations outside product specifications
- Mechanical abuse and exposure to severe conditions
If SmartAVI receives, during applicable warranty period, a notice of defect, SmartAVI will at its discretion replace or repair defective product. If SmartAVI is unable to replace or repair defective product covered by the SmartAVI warranty within reasonable period of time, SmartAVI shall refund the cost of the product.
SmartAVI shall have no obligation to repair, replace or refund unit until customer returns defective product to SmartAVI.
Any replacement product could be new or like new, provided that it has functionality at least equal to that of the product being replaced.
SmartAVI limited warranty is valid in any country where the covered product is distributed by SmartAVI.
Limitations of warranty
- To the extant allowed by local law, neither SmartAVI nor its third party suppliers make any other warranty or condition of any kind whether expressed or implied with respect to the SmartAVI product, and specifically disclaim implied warranties or conditions of merchantability, satisfactory quality, and fitness for a particular purpose.
Limitations of liability
- To the extent allowed by local law the remedies provided in this warranty statement are the customers sole and exclusive remedies.
- To the extant allowed by local law, except for the obligations specifically set forth in this warranty statement, in no event will SmartAVI or its third party suppliers be liable for direct, indirect, special, incidental, or consequential damages whether based on contract, tort or any other legal theory and whether advised of the possibility of such damages.
Local law
To the extent that this warranty statement is inconsistent with local law, this warranty statement shall be considered modified to be consistent with such law.

NOTICE
The information contained in this document is subject to change without notice. SmartAVI makes no warranty of any kind with regard to this material, including but not limited to, implied warranties of merchantability and fitness for particular purpose. SmartAVI will not be liable for errors contained herein or for incidental or consequential damages in connection with the furnishing, performance or use of this material. No part of this document may be photocopied, reproduced, or translated into another language without prior written consent from SmartAVI, Inc.
Designed and Manufactured in the USA
Tel: (800) AVI-2131 • 702-800-0005 2455 W Cheyenne Ave, Suite 112 North Las Vegas, NV 89032
www.smartavi.com

2-Port HDMI KVM Switch with Audio and USB 2.0 Support