Black Box Computer Hardware VX HDV iP RM User Manual

VX-HDV-IP  
VX-HDV-IP-SDI  
VX-HDV-IP-HDMI  
VX-HDV-IP-AUDIO  
VX-HDV-IP-RM  
VX-HDV-IP-PSU  
HD over IP Encoder/Decoder  
Provides first-class HD video  
transmission.  
NOM Statement  
Normas Oficiales Mexicanas (NOM) Electrical Safety Statement  
INSTRUCCIONES DE SEGURIDAD  
1. Todas las instrucciones de seguridad y operación deberán ser leídas antes de  
que el aparato eléctrico sea operado.  
2. Las instrucciones de seguridad y operación deberán ser guardadas para  
referencia futura.  
3. Todas las advertencias en el aparato eléctrico y en sus instrucciones de  
operación deben ser respetadas.  
4. Todas las instrucciones de operación y uso deben ser seguidas.  
5. El aparato eléctrico no deberá ser usado cerca del agua—por ejemplo, cerca de  
la tina de baño, lavabo, sótano mojado o cerca de una alberca, etc.  
6. El aparato eléctrico debe ser usado únicamente con carritos o pedestales que  
sean recomendados por el fabricante.  
7. El aparato eléctrico debe ser montado a la pared o al techo sólo como sea  
recomendado por el fabricante.  
8. ervicio—El usuario no debe intentar dar servicio al equipo eléctrico más allá a lo  
descrito en las instrucciones de operación. Todo otro servicio deberá ser referido  
a personal de servicio calificado.  
9. El aparato eléctrico debe ser situado de tal manera que su posición no interfiera  
su uso. La colocación del aparato eléctrico sobre una cama, sofá, alfombra o  
superficie similar puede bloquea la ventilación, no se debe colocar en libreros o  
gabinetes que impidan el flujo de aire por los orificios de ventilación.  
10. El equipo eléctrico deber ser situado fuera del alcance de fuentes de calor como  
radiadores, registros de calor, estufas u otros aparatos (incluyendo  
amplificadores) que producen calor.  
11. El aparato eléctrico deberá ser connectado a una fuente de poder sólo del tipo  
descrito en el instructivo de operación, o como se indique en el aparato.  
12. Precaución debe ser tomada de tal manera que la tierra fisica y la polarización  
del equipo no sea eliminada.  
13. Los cables de la fuente de poder deben ser guiados de tal manera que no sean  
pisados ni pellizcados por objetos colocados sobre o contra ellos, poniendo  
particular atención a los contactos y receptáculos donde salen del aparato.  
14. El equipo eléctrico debe ser limpiado únicamente de acuerdo a las  
recomendaciones del fabricante.  
15. En caso de existir, una antena externa deberá ser localizada lejos de las lineas  
de energia.  
16. El cable de corriente deberá ser desconectado del cuando el equipo no sea  
usado por un largo periodo de tiempo.  
17. Cuidado debe ser tomado de tal manera que objectos liquidos no sean  
derramados sobre la cubierta u orificios de ventilación.  
18. Servicio por personal calificado deberá ser provisto cuando:  
A. El cable de poder o el contacto ha sido dañado; u  
B. Objectos han caído o líquido ha sido derramado dentro del aparato; o  
C. El aparato ha sido expuesto a la lluvia; o  
D. El aparato parece no operar normalmente o muestra un cambio en su  
desempeño; o  
E. El aparato ha sido tirado o su cubierta ha sido dañada.  
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Table of Contents  
Table of Contents  
1
2
Technical Specifications ................................................................5  
Overview .........................................................................................7  
2.1 Summary description  
2.2 Special features  
2.3 How it works  
7
7
8
2.4 Plug-in connections  
2.5 Scope of delivery  
8
Error! Bookmark not defined.  
3
Installation ......................................................................................9  
3.1 Tabletop version  
9
3.2 Rack-mounting version  
9
3.3 How to change and insert the video interface modules  
3.4 Power supply and switch contact  
11  
11  
4
5
Description ...................................................................................12  
Web interface................................................................................14  
5.1 VX-HDV-IP system start-up  
14  
15  
16  
18  
19  
20  
22  
23  
24  
25  
26  
5.2 Ethernet  
5.3 Transmitter stream settings  
5.4 Transmitter status reports  
5.5 Choose the receiver’s EDID  
5.6 Receiver stream settings  
5.7 Receiver status reports  
5.8 Receiver video interface test  
5.9 Firmware upgrade  
5.10 Factory default restore  
5.11 Settings  
6
7
8
9
USB ports......................................................................................27  
FEC Forward Error Correction according to SMPTE 2022-1.......28  
Hardware reset instructions.........................................................31  
Console ports ...............................................................................31  
10 Audio-Board..................................................................................32  
11 Supported resolutions……………………………………………………. 34  
VX-HDV-IP, rev. 1  
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1
Technical Specifications  
Encoder/Decoder (VX-HDV-IP)  
Compression process  
Video resolution  
Delay per device  
Total delay  
JPEG2000  
max. 1920 x 1080P, min. 640 x 480I  
1.5 frames (=25 ms @ 60 Hz)  
3 frames (=50 ms @ 60 Hz) + network delay  
max. 72 Hz, min. 24 Hz  
Frame rate  
Pixel clock  
max. 150 MHz, min. 25 MHz  
Color depth  
12Bit / component  
Audio channels  
16 in same direction as video **  
16 in opposite direction to video **  
Audio sampling rate  
Audio coding  
Network interface  
max. 192kHz  
max. 32 Bit, uncompressed  
10/100/1000BaseTX,  
1 x RJ45  
Data interface  
Power supply  
USB 2.0, 1 plug type A, 1 plug type B  
2x 12VDC +/- 10%, 13W  
Operation temperature -10°C to 60°C  
Dimensions  
211 x 210 x 41.5mm,  
Weight 1.3 kg (not including interface module)  
Management  
Internal web server  
HDMI / DVI / VGA card (VX-HDV-IP-HDMI)  
Version  
HDMI 1.3  
Plug  
DVI-I  
Ports  
1 x video in (for encoder), 1 x video out (for  
decoder)  
HDMI interface  
DVI interface  
VGA interface  
Adapter plug included  
direct connection  
VGA signal receivable but not transmittable  
HD-SDI card (VX-HDV-IP-SDI)  
Max. resolution  
3G-SDI (SMPTE424M)  
Plug  
BNC  
Ports  
1 x video in (for encoder) or gen-lock  
1 x video out (for loopback)  
2 x video out (for decoder)  
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Audio card  
Audio frequency range 20Hz – 20kHz  
Audio channels  
Encoder: 2 x audio in, 2 x audio out  
Decoder: 2 x audio in, 2 x audio out  
Audio interfaces  
Line-In and Out, Mic-In, Headph.-Out and  
RS-232-Interface  
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2
Overview  
2.1 Summary description  
The VX-HDV-IP modular JPEG 2000 IP encoder/decoder system for  
HD video and audio is configurable as encoder or as decoder. Two different  
video interface modules are currently available: DVI-I and 3G-SDI. HDMI and  
VGA transmission is also possible by means of simple converters.  
A separate audio interface is available to enable one bidirectional audio  
channel for an Intercom connection.  
2.2 Special features  
Thanks to HD image quality, the system is ideally suited for professional  
applications. The modular video interface also enables interface mixing  
within the same installation, such as from an HD-SDI source to an HDMI  
device.  
The VX-HDV-IP is an independent encoder that delivers full HD 1080p/60Hz  
video streams without any quality impairment via conventional 10/100/  
1000 BASE-T networks. VX-HDV-IP encoders/decoders can be simply  
interconnected via existing networks (LANs and WANs) as well as by  
Internet.  
The VX-HDV-IP functions equally well in point-to point or in point-to-  
multipoint connections.  
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2.3 How it works  
The encoder receives and compresses the incoming HD video signal and  
transmits it via LAN or WAN. The decoder decompresses and passes on the  
original video signal to the device connected. With adequate LAN/WAN  
bandwidth, the signal quality is not reduced. And thanks to the JPEG 2000  
compression process, the image is not affected by artefacts or stutter.  
System delay (latency), network delay not included, is less than three  
frames. Multicast is supported, which means the image from one source can  
be simultaneously displayed on several monitors. The connections between  
encoders and decoders are defined by simple IP-addressing, enabling easy  
re-switching of connections without the need of crossbars.  
2.4 Plug-in connections  
Slot for video interfaces (DVI-I or 3G-SDI)  
Slot for audio input/output (not yet available)  
Redundant power input 12 VDC  
Alarm switch contact  
Two USB connections ([1] USB-A, [1] USB-B)  
Console port (USB plug)  
2.5 Scope of delivery  
VX-HDV-IP basic housing  
(4) rubber feet for tabletop version  
Video board (DVI-I or 3G-SDI, as required)  
12 VDC external power supply (optional)  
19-inch rackmounting kit (optional)  
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3
Installation  
The VX-HDV-IP is intended for indoor installation. The operating temperature  
limits are -10° C to +60° C. Two or more devices stacked above each other  
must be adequately spaced to ensure sufficient cooling.  
3.1 Tabletop version  
For tabletop use, the VX-HDV-IP must be fitted underneath the housing with  
the four screw-on rubber feet supplied.  
Fit rubber  
feet here  
3.2 Rack-mounting version  
The VX-HDV-IP is dimensioned so that two devices fit together in a 19-inch  
rack. For this, the optional rack mounting kit is required (VX-HDV-IP-RM).  
The VX-HDV-IP only needs one HU and can be fixed with four screws in  
various positions:  
Front connections,  
flush with edge of rack  
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Front connections, set back  
approx. 2 cm (for plug protection)  
Rear connection,  
flush with edge of rack  
Rear connection,  
set back approx. 2 cm  
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3.3 How to change and insert the video interface modules  
These modules are fixed with two screws. To change a module, release both  
screws and carefully remove the module.  
When installing a module, make sure that the board is supported on the  
guiderails at each side, and insert the module precisely in the straight or  
horizontal position until the connector engages.  
Æ Always shut the power off before changing modules!  
Fixing screws  
3.4 Power supply and switch contact  
To activate the VX-HDV-IP, a 12-VDC/2-A power supply is required.  
The two separate power input connections on the back allow for a redundant  
power supply. If you only use one power supply, you can connect it to either  
of these inputs.  
The switch contact is used for monitoring the two power inputs. It closes to  
signal a power failure, for example, to a control system.  
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4
Description  
The basic housing has a 10/100/1000TX Ethernet connection and two USB  
ports (USB 1 and USB 2) for KVM applications.  
The console port is exclusively for maintenance work and is not user-  
accessible.  
The reset button on the left returns the device to factory default setting if  
required. Press this button for at least five seconds until the green power  
LED starts flashing to signal a reboot.  
The DVI module has two connections: Video In and Video Out. The  
VX-HDV-IP can be configured as an encoder or as a decoder. Only one  
connection can be activated at a time.  
Æ The quality of the video cable can influence the video image quality.  
The LED of the configured port stays red if no connection is detected. This  
indicates whether it is configured as an encoder or a decoder, because the  
LED only goes green if the VX-HDV-IP detects a recognizable connection.  
The port is then ready for use.  
Front view of VX-HDV-IP with DVI module  
Ethernet port  
Power  
LED  
Reset  
Reserve slot for  
audio module  
USB for KVM  
Video in  
LEDs DVI  
Video out  
The VX-HDV-IP has two 12 VDC power inputs; one is redundant. Both power  
inputs are monitored by a switch contact that closes to signal a power failure,  
for example, to a control system.  
Rear view of VX-HDV-IP  
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Status LED  
LED  
Color  
Status  
on  
off  
Description  
Ready for use  
No power  
Flashes  
every 3  
seconds  
Flashes  
every second video stream  
Flashes  
Ready for use, but not on line  
Ready for use and on line, but no  
green  
Power  
LED  
every 0.2  
seconds  
Flashes  
Booting after hardware or software  
reset  
Identifying device (see 5.2: System  
red  
every second Configuration)  
left  
LAN  
port  
right  
On  
Flashing  
Off  
Network detected  
Data transmission  
No network  
Connection speed 10/100 Mbps  
Connection speed 1000 Mbps  
yellow  
amber on  
green  
on  
Device connected, streaming  
(transmitter only in case of EDID  
reception)  
On  
green  
Flashes  
every 3  
seconds  
Off  
Device connected, video streaming  
but no audio (receiver only)  
Not connected  
DVI  
port  
Connection active, but no device  
present or ready  
Identifying device (see 5.2: System  
Configuration)  
On  
Rapid  
flashing  
red  
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5
Web interface  
5.1 VX-HDV-IP system start-up  
The VX-HDV-IP is delivered with a preconfigured IP address. Before start-  
up, the IP address must be reconfigured and the device defined either as  
encoder or decoder (the two functions cannot be used in parallel).  
Connect the Ethernet port (RJ-45) of the VX-HDV-IP with shielded CAT5e  
cable to a Ethernet switch or network.  
Connect the monitor to the Video Out port.  
or  
Connect the video source to the Video In port.  
Access via Web browser  
Default settings:  
IP address  
Subnet mask 255.255.255.000  
Gateway 192.168.001.001  
192.168.001.200  
Per default, the devices are configured so that no password is required.  
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5.2 Ethernet  
In the first register, you can define the IP address, the subnet mask, and the  
gateway. You can also allocate an IP address from the network by activating  
the DHCP checkbox. Before activation, make sure a DHCP server is present  
in the network. Two DNS server addresses can also be defined.  
For easier identification, you can also assign a name to the device and  
designate a caption.  
The default name is “device_0” and the device caption is “e.q. blu-ray  
player.”  
After entering the network data, define the system operating mode of the  
device—either as receiver or transmitter—by checking the box next to  
System mode in the screen.  
To distinguish between several VX-HDV-IP devices in a rack, activate  
“Identify device.”  
All the LEDs in the device you want to identify will then flash red.  
Press the “Apply” key to confirm and activate your changes. If everything  
works correctly, press “Save” to finalize all changes.  
This ensures that your new settings will still be active after a reboot.  
Press “Undo” to cancel a command without saving.  
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5.3 Transmitter stream settings  
You can either set up a point-to-point connection (unicast) or a multicast  
connection to video stream receivers in the network that support the  
multicast address.  
For connections that need to pass through firewalls, the RTSP TCP port  
can be separately defined. To avoid unnecessary network loading, the  
video stream size can be defined by setting a maximum data rate, for  
example, 80 Mbps (see below). For an optimal HD video stream, the data  
rate setting should not be less than 30 Mbps. With “Auto stream” activated in  
the stream configuration checkbox, the video stream starts as soon as a  
connection between two units is made.  
For additional security against eavesdropping, activate “Force HDCP” (High  
Definition Content Protection) to protect video streams that are not from  
HDCP encrypted sources. HDCP encrypted sources will always be  
transmitted with HDCP encryption. This feature must be selected only at one  
device to be activated.  
Chroma Data Rate  
This menu item uses the available bandwidth optimally for color  
(chromaticity), then brightness (luminance). If the brightness is more  
important than the color, the proportion of Chroma can be reduced.  
When Chroma is set to 100%, 50% of the bandwidth is used for Chroma and  
50% is used for Luma (brightness of the image points). In the extreme case  
(black/white picture), only half of the set bandwidth is used because Chroma  
generates almost no data.  
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When Chroma is set to 50%, 25% of the bandwidth is used for Chroma and  
75% of the bandwidth is used for Luma.  
When Chroma is set to 0%, 100% of the bandwidth is used for Luma.  
IP TTL (time to life)  
This is a mechanism that limits the lifetime of data in a network. Once the  
prescribed timespan has elapsed, data is discarded.  
The range is between 0–255 seconds.  
Reduce the refresh rate  
In connection with the software decoder of EIT, the refresh rate can be  
reduced, so that only every second or every third or even only every 4th  
image is transferred. Thus, the data volume gets smaller and the computer  
that is running the software uses less CPU power.  
Traffic shaping  
Traffic shaping is a form of rate limiting. Use it to optimize or guarantee  
performance, improve latency, and/or increase usable bandwidth.  
Possible range for Max datarate is: 1–800 MBps  
If the max data rate is set as 30 Mbit/s and you change it to 70 Mbit/s, for  
example, with a resolution of 1080i, the stream will stop and rebuild a new  
stream. This is because if we have a stream <50 Mbit/s we need only two  
compression chips. If the stream is bigger than 50 Mbit/s, we need four  
compression chips. The transmitter has to inform the receiver (when  
rebooting) that now it has to use four compression chips.  
Æ The maximum data rate for interlaced resolutions, such as 1080i,  
must not exceed 140 MBps.  
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5.4 Transmitter status reports  
The example below shows a VX-HDV-IP with activated media player (no  
HDCP encryption).  
Operation mode:  
The device is configured as video transmitter box  
(vtb)  
Video sink:  
Video source:  
Resolution:  
No monitor is connected  
connected to activated media player  
Video stream resolution, frame rate, and pixel  
frequency  
Stream 0 (Video out): Playing = video stream currently sending  
Stream 1 (Audio out): Playing = audio stream currently sending  
Checking the video source  
If the unit is configured as transmitter and one source is connected to the  
video-in port, all video-out ports are loopback active and you can see the  
stream.  
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5.5 Choose the receiver’s EDID  
By default, the transmitter requires the EDID of the sink (e.g. monitor), so  
that the best possible resolution the receiver can handle is delivered. When  
an EDID is received, the transmitter sends a video stream. If the sink cannot  
send an EDID, the transmitter has to be set to “Use default EDID.” The video  
stream is then sent with the same resolution as the video source.  
On Multicast modus, the EDID is set automatically as “use default EDID.”  
Be sure that all monitors support the settings from the source.  
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5.6 Receiver stream settings  
The receiver must also know where the video stream is coming from, so the  
transmitter IP address must be entered accordingly.  
If “Force HDCP” was activated on the transmitter, it must not be activated on  
the receiver. It is sufficient if it is only activated on one device.  
As with the transmitter, the different ports can also be manually adjusted on  
the receiver. Here again, the port details settings must be the same for  
transmitter and receiver to enable transmission.  
Depending on the network constellation, the maximum network delay for  
transmission must be set accordingly. With large networks, it is better to set  
a longer delay so that the video stream is temporarily stored before  
transmission. This ensures a constant video stream even in the case of  
complex networks. Changing the maximum network delay reboots the  
connection and interrupts the video stream because the buffer has to be  
read in again.  
Since the video and the audio stream is not processed identically—video  
stream is compressed, audio stream is not— there may be delays in the  
transmission of sound and image. To achieve a lip-synchronous  
transmission, the “audio-video delay” can be adapted with values between  
100 ms and 100 ms. Here, too, the change of this size reboots the  
connection because the buffer has to be read again.  
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The OSD (On Screen Display) setting defines how long information is shown  
on the monitor. The setting range is 0–100 seconds. At 0 setting, nothing will  
be displayed, and at 100 setting the display remains on screen.  
Typical On Screen Display (OSD)  
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5.7 Receiver status reports  
The example below shows a VX-HDV-IP with an activated monitor.  
Operation mode:  
Video sink:  
Video source:  
Resolution:  
The device is configured as video receiver box (vrb).  
A monitor is connected and activated.  
No video source is connected.  
Only displays on the transmitter box  
Stream 0 (Video out): playing = video stream currently sending  
Stream 1 (Audio out): playing = audio stream currently sending  
The three keys at the top right corner are for starting, stopping, or  
reconnecting the video stream.  
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5.8 Receiver video interface test  
You can test the video output interface’s quality and function on the DVI  
board at three possible resolutions: 1080p60, 1080p24, and 720p60.  
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5.9 Firmware upgrade  
1. Save the new firmware as example “image_v4_02.img” file in a folder on the  
computer from where the update is executed.  
2. Connect to the VX-HDV-IP via a Web interface.  
3. Select “Firmware” in the Web interface menu.  
4. Activate the icon “select a file” and press “Apply.” A new folder will open.  
5. Select “Search” to get the “image_v4_02.img” file.  
6. Click “Upload.”  
7. An upload progress bar is now displayed.  
8. After about four minutes, the firmware is upgraded and ready to reboot.  
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5.10 Factory default restore  
Here, you can reset the VX-HDV-IP encoder/decoder to factory defaults if  
required.  
The network details, names, and designations are restored to factory default  
settings. Pressing the reset button on the front of the device for >5 seconds  
has the same effect.  
The factory default settings are as follows:  
IP address  
192.168.001.200  
Subnet mask 255.255.255.000  
Gateway  
192.168.001.001  
Username  
Password  
admin  
admin  
Host name:  
device_0  
Device caption: e.q. blu-ray player  
System mode: none  
Max. data rate: 80 MBps  
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5.11 Settings  
Here you can choose German or English as the system language, and  
define or change the user name and password for access authentication. To  
use the VX-HDV-IP with AMX devices, AMX must be activated.  
With authentication activated, you can no longer access the device if you  
forgot your user name or password.  
To re-enable access, reset the device to factory default by pressing the reset  
button on the front for at least five seconds.  
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6
USB ports  
Each VX-HDV-IP device has two USB-A ports, and a USB-B port for future  
use with KVM. The current USB port supports only the features for keyboard  
and mouse.  
Each VX-HDV-IP unit can be configured as a host or as a device. Just  
activate the function you want. The USB cable length is maximum 3 m.  
If you configure the unit as a host, the USB-2 interface will be active and you  
can connect a keyboard or a mouse to it.  
If you configure the unit as a device, the USB-1 interface will be active and  
you can connect it to your PC.  
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7
FEC Forward Error Correction according to SMPTE 2022-1  
In telecommunication, information theory, and coding theory, forward error  
correction (FEC) or channel coding is a technique used for controlling errors  
in data transmission over unreliable or noisy communication channels. The  
central idea is the sender encodes their message in a redundant way by  
using an error-correcting code (ECC).  
The redundancy allows the receiver to detect a limited number of errors that  
may occur anywhere in the message, and often to correct these errors  
without retransmission. FEC gives the receiver the ability to correct errors  
without needing a reverse channel to request retransmission of data, but at  
the cost of a fixed, higher forward channel bandwidth.  
The FEC doesn’t support the audio from the external audio interface.  
FEC Enable: for video and audio separately selectable  
Size of matrix: settings between 4 and 10  
To calculate the redundant packets, all packets to be transmitted are placed  
in a matrix. The size of the array determines how many packets can be  
recovered. The smaller the matrix, the more bandwidth is provided to the  
redundant packets (= more overhead) and more packets can be recovered.  
But the larger the matrix, more packets must be buffered before sending, so  
the latency is greater. The lower the bandwidth, the greater is this effect.  
e.g.: low bandwidth (1 frame = 17 Ethernet packets) and a size of 10 x 10, 6  
images need to be cached before the redundant packets may be calculated.  
Thus, at 60 Hz refresh rate, the network delay at the receiver to 1/60 Hz * 6 =  
100 ms must be increased to ensure the restoration works. With a high  
bandwidth (1 picture = 250 Ethernet packets), the additional delay is only  
1/60 Hz * 100/250 = 7 ms. In the example with set low bandwidth (1 frame =  
17 Ethernet packets), the die size is set to 4 x 4, so only one image needs to  
be cached, thus the additional delay is only 17 ms.  
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Column only: If enabled, SMPTE 2022-1 Level A; disabled, Level B. Level A  
sends only one FEC stream, so only single packets are recovered. The  
overhead is smaller than for Level B. For Level B, in addition, several  
consecutive packets can be restored (it is at most as many as for “Size of  
matrix” set). Overhead in %: Depends on the matrix size, see table.  
Overhead: The spectrum additionally required when FEC is turned on. If the  
bandwidth is set to 100 Mbit (= 40% overhead), and a 5x5 matrix increases  
the total bandwidth to 140 Mbit, the overhead is calculated as follows:  
Column only switched on:  
Overhead = 1 / "size of matrix"  
= For example size of matrix = 5, overhead = 1/5 = 0.2  
Column only off:  
Overhead = ("size of matrix" + "size of matrix") / ("size of matrix" * "size of  
matrix")  
= For example size of matrix = 5, overhead = (5 +5) / (5 * 5) = 0.4  
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Page 29  
Receiver settings  
Restrictions: An additional audio board is not supported by FEC, but how  
many packets are not recovered is visible.  
Measured Bandwith according to different Matrix settings  
FEC-Matrix  
Overhead  
Latency by  
30 Mbps  
24 ms  
Latency by  
50 Mbps  
20 ms  
Latency by  
80 Mbps  
18 ms  
5
8
40%  
25%  
35 ms  
30 ms  
27 ms  
Firewall: you have to set the video-port n and also the ports n+2 and n+4  
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8
Hardware reset instructions  
On the front of the VX-HDV-IP is a slightly recessed reset button. To reboot  
the device, press this button for less than five seconds. Pressing it for  
longer than five seconds resets everything (IP address, user name, and  
password) to factory default.  
9
Console ports  
The console port is exclusively for use by Black Box Technical Support.  
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Page 31  
10 Audio-Board  
The optional audio board has two line-in interfaces, Lin-In and Mic-In and  
two line out-interfaces, Line-out and Head-out. It also has a serial interface  
for future use.  
In this firmware version, the audio interface works only as an intercom  
solution. It builds a bidirectional audio-channel between a transmitter and a  
receiver.  
To activate the audio function, select the “audio” (audio board) icon in the  
“stream” folder on the receiver unit.  
This audio stream will be streamed parallel to the video/audio-stream from  
the main board. The stream is not compressed and HDCP and FEC have no  
functionality in this stream.  
In the folder “audio,” select whether “Line-In” or “Mic-In” should be active.  
You can also adjust the gain and boost the Micro-In with +20 dB.  
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The Lin-In and both Line-out interfaces are stereo. The Mic-In interface is  
mono. It is not possible to use both line in interfaces at the same time. Only  
one is active at a time.  
If you configure the audio board as “Line-In” only, the “Line-Out” interface is  
active. If you configure it as “Mic-In,” both line-out interfaces are active.  
Specifications according to datasheet:  
-
-
-
-
-
Sampling rate  
Resolution  
SNR Lin-In/Out  
SNR Mic-In  
Frequency  
48kHz  
16bit  
90db  
80dB  
20Hz – 20kHz  
Jack 3,5mm, pin assignment  
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Page 33  
11 Supported resolutions  
HDMI / DVI:  
All resolutions up to 150 MHz pixel clock (1920 x 1080)  
VGA:  
640 x 480 @ 60 Hz/72 Hz/75 Hz/85 Hz  
800 x 600 @ 56 Hz/60 Hz/72 Hz/75 Hz/85 Hz  
1024 x 768 @ 60 Hz/70 Hz/75Hz/85 Hz  
1280 x 1024 @ 60 Hz/75 Hz  
SDI:  
1080p60/30  
1080p50/25  
1080p24  
720p60  
720p50  
720p30  
720p25  
720p24  
1080i60  
1080i50  
1080s24  
480i60  
480i50  
576i50  
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VX-HDV-IP, rev. 1  
724-746-5500 | blackbox.com  

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