Kramer VM-3H2 User manual

USER MANUAL
MODEL:
VM-3H2
4K HDMI 2.0 1:3 DA
P/N: 2900-300603 Rev 2 www.kramerAV.com

VM-3H2 – Contents i
Contents
1Introduction 1
2Getting Started 2
2.1 Achieving the Best Performance 2
2.2 Safety Instructions 2
2.3 Recycling Kramer Products 3
3Overview 4
3.1 Defining the VM-3H2 4K HDMI 2.0 1:3 DA 5
3.2 Setting the DIP-Switches 5
3.3 LED Indications 6
4Connecting the VM-3H2 7
5EDID Acquisition Policy 9
6Upgrading the Firmware 10
7Supported Input Resolutions 12
8Default EDID 13
9Technical Specifications 16
Figures
Figure 1: VM-3H2 4K HDMI 2.0 1:3 DA 5
Figure 2: Connecting the VM-3H2 4K HDMI 2.0 1:3 DA 8

VM-3H2 - Introduction 1
1 Introduction
Welcome to Kramer Electronics! Since 1981, Kramer Electronics has been
providing a world of unique, creative, and affordable solutions to the vast range of
problems that confront video, audio, presentation, and broadcasting professionals
on a daily basis. In recent years, we have redesigned and upgraded most of our
line, making the best even better!
Our 1,000-plus different models now appear in 14 groups that are clearly defined by
function: GROUP 1: Distribution Amplifiers; GROUP 2: Switchers and Routers;
GROUP 3: Control Systems; GROUP 4: Format/Standards Converters; GROUP 5:
Range Extenders and Repeaters; GROUP 6: Specialty AV Products; GROUP 7:
Scan Converters and Scalers; GROUP 8: Cables and Connectors; GROUP 9:
Room Connectivity; GROUP 10: Accessories and Rack Adapters; GROUP 11:
Sierra Video Products; GROUP 12: Digital Signage; GROUP 13: Audio; and
GROUP 14: Collaboration.
Congratulations on purchasing your Kramer VM-3H2 4K HDMI 2.0 1:3 DA. This
product, which incorporates HDMI™ 2.0 technology, is ideal for:
•Digital signage, entertainment, retail
•Medical and defence applications that require high resolution support

2 VM-3H2 - Getting Started
2 Getting Started
We recommend that you:
•Unpack the equipment carefully and save the original box and packaging
materials for possible future shipment
•Review the contents of this user manual
Go to www.kramerav.com/downloads/VM-3H2 to check for up-to-
date user
manuals, application programs, and to check if firmware upgrades are
available (where appropriate).
2.1 Achieving the Best Performance
To achieve the best performance:
•Use only good quality connection cables (we recommend Kramer high-
performance, high-resolution cables) to avoid interference, deterioration in
signal quality due to poor matching, and elevated noise levels (often
associated with low quality cables)
•Do not secure the cables in tight bundles or roll the slack into tight coils
•Avoid interference from neighbouring electrical appliances that may adversely
influence signal quality
•Position your VM-3H2 away from moisture, excessive sunlight and dust
This equipment is to be used only inside a building. It may only be
connected to other equipment that is installed inside a building.
2.2 Safety Instructions
Caution:
There are no operator serviceable parts inside the unit
Warning: Use only the Kramer Electronics power supply that is
provided with the unit
Warning: Disconnect the power and unplug the unit from the wall
before installing

VM-3H2 - Getting Started 3
2.3 Recycling Kramer Products
The Waste Electrical and Electronic Equipment (WEEE) Directive 2002/96/EC aims
to reduce the amount of WEEE sent for disposal to landfill or incineration by
requiring it to be collected and recycled. To comply with the WEEE Directive,
Kramer Electronics has made arrangements with the European Advanced
Recycling Network (EARN) and will cover any costs of treatment, recycling and
recovery of waste Kramer Electronics branded equipment on arrival at the EARN
facility. For details of Kramer’s recycling arrangements in your particular country go
to our recycling pages at http://www.kramerelectronics.com/support/recycling/.

4 VM-3H2 - Overview
3 Overview
The VM-3H2 is a distribution amplifier for 4K UHD HDMI 2.0 signals. The unit takes
one HDMI input, equalizes and reclocks the signal and distributes it to three identical
outputs. It distributes signals having resolutions up to 4K@60 (4:4:4) with HDMI 2.0
and HDCP 2.2.
The VM-3H2 features:
•A maximum data rate of 17.82Gbps (5.94Gbps per graphic channel) that
supports resolutions up to 4K @60Hz (4.4.4)
•HDMI support for Deep Color, x.v.Color™, Lip Sync, HDMI Uncompressed
Audio Channels, Dolby TrueHD, DTS-HD, CEC
•HDCP 2.2, HDMI 2.0 support
•Kramer Equalization & re-Klocking™ Technology that rebuilds the digital
signal integrity to travel longer distances
•A default EDID for fast and efficient connection of the unit
The default EDID feature lets you connect the VM-3H2 without having to connect a
display to the output
•Operating modes selectable by DIP-switch: force RGB, lock EDID, HDCP
enable, programming mode
•3D pass-through
•Plug and Play operation
•Cascade of Kramer devices like distribution amplifiers
•An RS-232 port for upgrading firmware
•A compact MegaTOOLS®enclosure with a 5V DC power source

VM-3H2 - Overview 5
3.1 Defining the VM-3H2 4K HDMI 2.0 1:3 DA
This section defines the VM-3H2.
Figure 1: VM-3H2 4K HDMI 2.0 1:3 DA
# Feature Function
1
IN LED
Lights green when an HDMI source is connected
2
OUT LEDs (1-3)
Light green when an HDMI acceptor is connected
3
ON LED
Lights green when the unit is powered on
4
HDMI IN Connector
Connects to an HDMI source
5
HDMI OUT Connectors (1 to 3)
Connect to up to three HDMI acceptors
6
RS-232 (PROG) Terminal Block
Connects to a PC for firmware updating
7
SETUP DIP-Switches (1-4)
Used for setting four different operation modes (see Section 3.2)
8
5V DC Power Connector
Connects to a 5V DC power supply
3.2 Setting the DIP-Switches
The VM-3H2 uses four DIP-switches to set four different operation modes:
•Programming mode – normal operation mode, programming mode
•MAC mode – enable HDCP, disable input HDCP
•Force RGB - force RGB, normal operation mode
•Lock default EDID – locked, not locked
Note: Any time the DIP-switch settings are changed, the device must be powered
off and on for the new settings to take effect.

6 VM-3H2 - Overview
To select the operation mode, set the DIP-switches as follows:
Programming
mode
HDCP Input
(MAC mode)
Force RGB
Lock Default
EDID
DIP
1
2
3
4
OFF (up)
Normal mode
HDCP enabled
Force RGB
EDID not locked
ON (down)
Enable programming
HDCP disabled
Normal mode
EDID locked
The VM-3H2 toggles between “Normal” and “Force RGB” modes.
In “Force RGB” mode, the read EDID is rewritten to identify only RGB support.
•To force RGB, set DIP 3 OFF (up)
•After setting Force RGB mode you must re-acquire the EDID to update the
Force RGB change
Powering on the device identifies the mode as follows:
•In “Normal mode” (meaning no forcing RGB), the LEDs flash once
•In “Force RGB mode”, the LEDS flash four times.
Note: Force RGB modifies the EDID saved on the input to not support YUV format.
In case of a pink display, use the Force RGB mode.
3.3 LED Indications
The input and output LEDs turn on only when there is an input signal and an active
output device connected.
Flashing LEDs indicate the following states:
LED
Indication
State
Input LED
(per input)
Flashes four times then stays on
HDCP lost on input while running
Output LED Flashes twice quickly, repeatedly HDCP signal on input.
Output device does not support HDCP
Flashes slowly, repeatedly
Input signal detected.
Output device has invalid EDID
Flashes twice quickly then twice
slowly, repeatedly HDCP signal on input. Output device does not support HDCP
and has invalid EDID

VM-3H2 - Connecting the VM-3H2 7
4 Connecting the VM-3H2
Always switch off the power to each device before connecting it to
your VM-3H2. After connecting your VM-3H2, connect its power and
then switch on the power to each device.
You do not have to connect all the inputs and outputs, connect only
those that are required.
To connect the VM-3H2, as illustrated in the example in Figure 2, do the following:
1. Connect an HDMI input source (for example, a 4K Blu-ray player) to the
HDMI IN connector.
2. Connect the three OUTPUT connectors to up to three HDMI acceptors, as
follows:
Not all outputs need to be connected.
HDMI OUT 1 connector to HDMI acceptor 1 (for example, a 4K display
with speakers)
HDMI OUT 2 connector to HDMI acceptor 2 (for example, a 4K display
with speakers)
HDMI OUT 3 connector to HDMI acceptor 3 (for example, 4K plasma
display)
3. Connect the 5V DC power adapter to the power socket unit and then
connect the adapter to the mains electricity (not shown in Figure 2).
See Section 3.3 for the state of the LED indicators during and after powering
on.