Kramer VP-427A User manual

KRAMER ELECTRONICS LTD.
USER MANUAL
MODEL:
VP-427A
HDBaseT to HDMI+Audio
Receiver/Scaler
P/N: 2900-300425 Rev 1

VP-427A – Contents
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Contents
1Introduction 1
2Getting Started 2
2.1 Achieving the Best Performance 2
2.2 Safety Instructions 3
2.3 Recycling Kramer Products 3
3Overview 4
3.1 Defining the VP-427A HDBaseT to HDMI+Audio Receiver/Scaler 5
4Connecting the VP-427A 6
4.1 RS-232 Control Over HDBaseT 7
4.2 IR Control Over HDBaseT 8
5Operating the VP-427A 9
5.1 Operating the VP-427A from the Front Panel Buttons 9
5.2 Using the OSD 9
6Technical Specifications 13
6.1 Input Resolutions Support 13
Figures
Figure 1: VP-427A HDBaseT to HDMI+Audio Receiver/Scaler 5
Figure 2: Connecting the VP-427A HDBaseT to HDMI+Audio Receiver/Scaler 7

VP-427A - 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 VP-427A HDBaseT to HDMI+Audio
Receiver/Scaler, which is ideal for the following typical applications:
Home theater, presentation and multimedia applications
Rental and staging

2
VP-427A - 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 http://www.kramerelectronics.com/support/product_downloads.asp
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 neighboring electrical appliances that may adversely
influence signal quality
Position your Kramer VP-427A 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.
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VP-427A - Getting Started
3
2.2 Safety Instructions
Caution:
There are no operator serviceable parts inside the unit
Warning:
Use only the Kramer Electronics input power wall
adapter that is provided with the unit
Warning:
Disconnect the power and unplug the unit from the wall
before installing
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/.
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4
VP-427A - Overview
3 Overview
The Kramer VP-427A is a receiver/scaler for HDBaseT twisted pair, HDMI,
bidirectional RS-232 and IR signals. The unit receives an HDBaseT signal that it
converts to HDMI, IR and passed RS-232 signals. It up- or down-scales the picture
to match the resolution of the HDMI monitor.
The VP-427A also features:
An HDBaseT input
An HDMI output
A bidirectional RS-232 port for embedding/de-embedding control commands
in the HDBaseT data stream
Infrared input and output ports for controlling devices over the HDBaseT data
stream
Embedded audio supporting LPCM 2CH
Maintains constant sync on the output, even when the input video signal is
lost or interrupted
A simultaneous analog audio output of the embedded HDMI audio
System range of up to 70m (230ft).
A built-in ProcAmp for convenient signal adjustment
An On-Screen Display (OSD) for easy setup and adjustment, accessible via
the front-panel buttons
A non-volatile memory that retains the last settings used
A freeze button
A USB connector for firmware upgrading
The machine is fed from an external 5V DC source, making it suitable for field
operation.

VP-427A - Overview
5
3.1 Defining the VP-427A HDBaseT to HDMI+Audio
Receiver/Scaler
This section defines the VP-427A.
Figure 1: VP-427A HDBaseT to HDMI+Audio Receiver/Scaler
#
Feature
Function
1
ON LED
Lights green when the unit is powered on
2
MENU Button
Press to enter/escape the on-screen display
(OSD) menu. Press together with the –button to
reset to 720p
3
ENTER Button
In OSD, press to choose the highlighted menu
item. Press together with the + button to reset to
XGA
4
–
In OSD, press to move backward through the list
or to decrement the parameter value
5
+/FREEZE Button
In OSD, press to move forward through the list or
to increment the parameter value. When not in
OSD, press to freeze the display
6
PROG USB Connector
Connects to a PC for programming upgrade
7
HDBT IN RJ-45 Connector
Connects to an HDBaseT transmitter
8
AUDIO OUT 3.5mm Mini Jack
Connects to an unbalanced stereo acceptor
9
HDMI OUT Connector
Connects to an HDMI acceptor
10
IR IN 3.5mm Mini Jack
Connects to an IR receiver
11
IR OUT 3.5mm Mini Jack
Connects to an IR emitter
12
RS-232 9-pin D-sub Connector
Connects to a controller
13
5V DC
+5V DC connector for powering the unit

6
VP-427A - Connecting the VP-427A
4 Connecting the VP-427A
Always switch off the power to each device before connecting it to your
VP-427A. After connecting your VP-427A, connect its power and then
switch on the power to each device.
To connect the VP-427A as illustrated in the example in Figure 2:
1. Connect the output from an HDBaseT transmitter (for example, a TP-582T)
to the HDBT IN RJ-45 connector.
2. Connect the AUDIO OUT 3.5mm mini jack connector to an unbalanced
stereo audio acceptor (for example, an amplifier).
3. Connect the HDMI OUT connector to an HDMI acceptor (for example, a
display).
4. Connect an IR receiver to the IR IN 3.5mm mini jack.
5. Connect the IR OUT 3.5mm mini jack to an IR emitter.
6. Connect the RS-232 9-pin D-sub connector to an RS-232 port (for example,
a display).
7. Connect the 5V DC power adapter to the power socket and connect the
adapter to the mains electricity (not shown in Figure 2).
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VP-427A - Connecting the VP-427A
7
Figure 2: Connecting the VP-427A HDBaseT to HDMI+Audio Receiver/Scaler
4.1 RS-232 Control Over HDBaseT
You can connect to the transmitter/receiver system via an RS-232 connection
using, for example, a PC. Note that a null-modem adapter/connection is not
required.
To connect a PC via RS-232, connect the RS-232 9-pin D-sub rear panel port on
the transmitter/receiver system unit via a 9-wire straight cable (only pin 2 to pin 2,
pin 3 to pin 3, and pin 5 to pin 5 need to be connected) to the RS-232 9-pin D-sub
port on your PC.

8
VP-427A - Connecting the VP-427A
Figure 2 shows RS-232 bidirectional control of the DVD that is connected to a
TP-582T.
4.2 IR Control Over HDBaseT
Since the IR signal on the TP-582T transmitter and VP-427A receiver is
bidirectional, you can use a remote control transmitter (that is used for controlling
a peripheral device, for example, a DVD player) to send commands (to the AV
equipment) from either end of the transmitter /receiver system. To do so, you have
to use the Kramer external IR sensor on one end (P/N: 95-0104050) and the
Kramer IR emitter cable on the other end (P/N: C-A35/IRE-10)
Two IR Emitter Extension Cables are also available: a 15 meter cable and a 20 meter cable.
The example in Figure 2 illustrates how to control the DVD player that is
connected to TP-582T using a remote control, via the VP-427A. In this example,
the External IR Sensor is connected to the IR connector of the VP-427A and an IR
Emitter is connected between the TP-582T and the DVD player. The DVD remote
control sends a command while pointing towards the External IR Sensor. The IR
signal passes through the TP cable and the IR Emitter to the DVD player, which
responds to the command sent.

VP-427A - Operating the VP-427A
9
5 Operating the VP-427A
The VP-427A is operated directly using the front panel buttons and the OSD menu
(see Section 5.2).
5.1 Operating the VP-427A from the Front Panel Buttons
During normal operation (without the OSD), the front panel buttons perform the
following functions:
Pressing MENU opens the on-screen display (OSD) main menu (see
Section 5.2), the next press closes the OSD
Pressing +/FREEZE freezes the display, the next press unfreezes the
display
Pressing MENU and –/AUTO ADJUST together resets the display to 720p
Pressing ENTER and +/FREEZE together resets the display to XGA
5.2 Using the OSD
You can use the OSD to set a wide variety of parameters. When the MENU button
is pressed, the main menu opens (see Section 5.2.2) allowing access to all the
device settings.
5.2.1 Operating the OSD from the Front Panel Buttons
While the OSD is open, the front panel buttons perform the following functions:
Pressing - and + move forward and backward through the menu items and
decrement or increment the parameter values
Pressing ENTER selects and activates a menu item or accepts the
parameter value set
Pressing MENU closes the OSD menu
The menu times out by default after 10 seconds. To change the OSD display time,
adjust the OSD/TIMER parameter.

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VP-427A - Operating the VP-427A
As an example of setting parameters, to increase the contrast on the display:
1. From normal operation, press MENU.
The OSD main menu appears on the screen.
2. Press the + or –button to highlight CONTRAST.
CONTRAST changes to green when highlighted.
3. Press ENTER.
The contrast value parameter changes to red.
4. Press the + button to increase the value (increase the contrast) or
the –button to decrease the value (decrease the contrast).
The value ranges from 0 to 100.
5. Press ENTER to set the value.
The contrast value parameter changes back to white.
6. To return to normal operation, highlight EXIT and press ENTER, press
MENU, or wait until the menu times out.
5.2.2 The OSD Menu Structure
Main Menu
Submenu
Values
Notes
Picture
Contrast
0-100
Adjusts the contrast
Brightness
0-50
Adjusts the brightness level
Saturation
0-100
Adjusts the color saturation level
Hue
0-100
Adjusts the color hue setting
Sharpness
0-100
Adjusts the sharpness (edge contrast)
Picture Reset
Resets picture settings to their default
values
Exit
Select to exit to the Main Menu
Aspect Ratio
Best Fit
Shows the largest sized picture
without distorting the aspect ratio
Full
The output picture fills the screen
16:9
Forces a 16:9 aspect ratio
4:3
Forces a 4:3 aspect ratio
Over Scanning
5%
10%
15%
20%
OFF
Allows enabling and sizing selection of
overscanned output
Noise Reduction
Off
Min
Typ
Max
Enable video noise reduction, and
selection of strength of noise filter

VP-427A - Operating the VP-427A
11
Main Menu
Submenu
Values
Notes
Output
Native
480p
570p
720p
1080i
1080p
640x480
800x600
1024x768
1280x800
1280x1084
1360x768
1400x1050
1440x900
1600x1200
1680x1050
1920x1200
Select the desired resolution (Native is
recommended)
Refresh Rate
60Hz
50Hz
Follow
Select that the output refresh rate
follows the input refresh rate
(recommended), or force it to 50Hz or
60Hz
HD Output Color
RGB
YPbPr
Select the output colorspace
OSD Settings
H-Position
0-100
Adjusts the horizontal position of the
OSD on the screen
V-Position
0-100
Adjusts the vertical position of the
OSD on the screen
Transparency
0-100
Adjusts the transparency of the OSD
background from black to totally
transparent
Menu Timeout
5-100
Adjusts the length of time in seconds
the OSD appears on the screen
before timing out
Info Timeout
Info Display
Exit
Select to exit to the Main Menu
Advanced
Auto Sync
On
Off
Turns ON/OFF the auto sync. When
ON, after a short period of not
detecting a valid video signal on the
input(s), the unit disables the two
outputs until a valid input is again
detected or any keypad is pressed
HDCP on Input
On
Off
Selects the HDCP option for the HDMI
input: either ON (the default) or OFF.
Setting HDCP support on the HDMI
input to disable (OFF) allows the
source to transmit a non-HDCP signal
if required (for example, when working
with a Mac computer)
Freeze
Freeze+Mute
Mute Only
Freeze Only
Exit
Select to freeze/mute the display

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VP-427A - Operating the VP-427A
Main Menu
Submenu
Values
Notes
Factory Default
No
Yes
Reset the unit to its Factory Default
settings
Info Menu
Source Info
Displays the source, input and output
resolutions and the software version
(read only)
Sync Info
Firmware
Version
Exit
Select to exit OSD

VP-427A - Technical Specifications
13
6 Technical Specifications
INPUTS:
1 HDBaseT twisted pair on an RJ-45 connector, 1 IR
on a 3.5mm mini jack
OUTPUTS:
1 HDMI connector, 1 IR on a 3.5mm mini jack, 1
unbalanced stereo audio on a 3.5mm mini jack
PORTS:
1 bidirectional RS-232 port on a 9-pin D-sub connector
OUTPUT RESOLUTIONS:
Native 480p 570p 720p 1080i
1080p 640x480 800x600 1024x768
1280x800 1280x1084 1360x768 1400x1050
1440x900 1600x1200 1680x1050 1920x1200
OUTPUT REFRESH RATE:
60Hz for computer graphics resolutions, 50/60Hz for
HDTV resolutions
LATENCY:
30ms (approx.)
VIDEO COLOR DEPTH:
Input: 8/10/12-bit, output: 8-bit
EMBEDDED AUDIO:
Supports LPCM 2CH
RS-232 BAUDRATE:
115200bps max.
CONTROLS:
Front panel buttons, 1 USB for programming
INDICATORS:
ON LED
POWER CONSUMPTION:
5V DC, 1.5A
OPERATING 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
DIMENSIONS:
18.8cm x 11.4cm x 2.5cm (7.4” x 4.5” x 1.0”) W, D, H
WEIGHT:
0.45kg (1.0lb)
INCLUDED ACCESSORIES:
Power supply
OPTIONS:
RK-T2B 19” rack adapter
Specifications are subject to change without notice at http://www.kramerelectronics.com
6.1 Input Resolutions Support
Resolution/Refresh Rate
Resolution/Refresh Rate
480I/576I(NTSC/PAL)
SXGA@(60)
480P/576P
UXGA@60
720P@(60/50)
WXGA@60(1280x800)
1080I@(60/50)
WXGA@60(1366x768)
1080P@(60/50)
WSXGA@60(1680x1050)
1080P@(24/25/30)
WUXGA@60(1920x1200 RB)
VGA@(60/72/75)
WXGA+@60(1440x900)
SVGA@(56/60/72/75)
SXGA+@60(1400x1050)
XGA@(60/70/75)

For the latest information on our products and a list of Kramer distributors, visit
our Web site where updates to this user manual may be found.
We welcome your questions, comments, and feedback.
Web site: www.kramerelectronics.com
E-mail: [e-mail]
P/N:
2900-300425
Rev:
1
!
SAFETY WARNING
Disconnect the unit from the power
supply before opening and servicing