Kramer VM-3H2 User manual

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

Kramer Electronics Ltd.
VM-3H2 –Contents
i
Contents
Introduction 1
Getting Started 1
Overview 3
Typical Applications 3
Defining the VM-3H2 1:3 4K HDR HDMI DA 4
Setting the DIP-Switches 4
LED Indications 5
Mounting VM-3H2 6
Connecting the VM-3H2 7
EDID Acquisition Policy 8
Upgrading the Firmware 9
Default EDID 10
Technical Specifications 12

Kramer Electronics Ltd.
VM-3H2 –Introduction
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!
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).
Achieving 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 neighboring electrical appliances that may adversely influence
signal quality.
•Position your Kramer VM-3H2 away from moisture, excessive sunlight and dust.
Safety Instructions
Caution:
•This equipment is to be used only inside a building. It may only be connected to other
equipment that is installed inside a building.
•For products with relay terminals and GPI\O ports, please refer to the permitted rating
for an external connection, located next to the terminal or in the User Manual.
•There are no operator serviceable parts inside the unit.
Warning:
•Use only the power cord that is supplied with the unit.
•Disconnect the power and unplug the unit from the wall before installing.
•Do not open the unit. High voltages can cause electrical shock! Servicing by qualified
personnel only.
•To ensure continuous risk protection, replace fuses only according to the rating
specified on the product label which located on the bottom of the unit.

Kramer Electronics Ltd.
VM-3H2 –Introduction
2
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 www.kramerav.com/support/recycling.

Kramer Electronics Ltd.
VM-3H2 –Overview
3
Overview
Congratulations on purchasing your Kramer VM-3H2 1:3 4K HDR HDMI DA. VM-3H2 is a 1:3
distribution amplifier for up to 4K HDR, HDMI™signals, that comply with HDCP 2.2 content
protection standard. The unit takes one HDMI input, equalizes and reclocks the signal and
distributes it to three identical outputs.
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).
•HDR, HDCP 2.2 compliant signal, supporting deep color, x.v.Color™, lip sync, 7.1 PCM,
Dolby TrueHD, DTS-HD, CEC (OUT 1 only), 2K, 4K, and 3D as specified in HDMI 2.0.
•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.
Typical Applications
VM-3H2 is ideal for the following typical applications:
•Digital signage, entertainment, retail.
•Medical and defense applications that require high resolution support.

Kramer Electronics Ltd.
VM-3H2 –Defining the VM-3H2 1:3 4K HDR HDMI DA
4
Defining the VM-3H2 1:3 4K HDR
HDMI DA
This section defines the VM-3H2.
Figure 1: VM-3H2 1:3 4K HDR HDMI 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 Setting
the DIP-Switches on page 4)
8
5V DC Power Connector
Connects to a 5V DC power supply
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.
Any time the DIP-switch settings are changed, the device must be powered off and on for the
new settings to take effect.

Kramer Electronics Ltd.
VM-3H2 –Defining the VM-3H2 1:3 4K HDR HDMI DA
5
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.
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.
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

Kramer Electronics Ltd.
VM-3H2 –Mounting VM-3H2
6
Mounting VM-3H2
This section provides instructions for mounting VM-3H2. Before installing, verify that the
environment is within the recommended range:
•Operation temperature –0to 40C (32 to 104F).
•Storage temperature –-40to +70C (-40 to +158F).
•Humidity –10% to 90%, RHL non-condensing.
Caution:
•Mount VM-3H2 before connecting any cables or power.
Warning:
•Ensure that the environment (e.g., maximum ambient temperature & air flow) is
compatible for the device.
•Avoid uneven mechanical loading.
•Appropriate consideration of equipment nameplate ratings should be used for avoiding
overloading of the circuits.
•Reliable earthing of rack-mounted equipment should be maintained.
To mount the VM-3H2 on a rack
Mount the unit in a rack using the recommended rack adapter
(see www.kramerav.com/product/VM-3H2)
To mount the VM-3H2 on a table or shelf
•Attach the rubber feet and place the unit on a flat surface.
•Fasten a bracket (included) on each side of the unit and attach it to
a flat surface.
For more information go to www.kramerav.com/downloads/VM-3H2

Kramer Electronics Ltd.
VM-3H2 –Connecting the VM-3H2
7
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 LED Indications on page 5for the state of the LED indicators during and after
powering on.
Figure 2: Connecting the VM-3H2 1:3 4K HDR HDMI DA

Kramer Electronics Ltd.
VM-3H2 –EDID Acquisition Policy
8
EDID Acquisition Policy
This section describes the EDID policy as a function of the state of DIP-switch 4 (Lock Default
EDID).
When set to ON (down), the input EDID is locked to the default EDID value.
When set to OFF (up):
•If no outputs are connected when powering on the VM-3H2, the default EDID is set on
the input. The EDID of the first output that is connected after powering the device is set
to the input. This EDID is replaced by the default EDID only when all outputs are
disconnected.
•If one or more outputs are already connected when powering on the VM-3H2, the valid
EDID of the display that is connected to the output with the highest number is set to the
input (for example, if OUT 2 and OUT 3 are connected and both have valid EDIDs, when
powering the device, the EDID of the display connected to OUT 3 is written to the input).
DIP-switch changes take effect only after powering on the device.