Specifications


Specifications in this chapter:

AC power specification

The K2 Media Client AC power specification is shown in the following table.

Characteristic
Specification
Power supply
Dual, redundant
Mains Input Voltage
100V to 240V auto-range, 50-60Hz
Power consumption
300W typical, 500W maximum

WARNING: Always use a grounded outlet to supply power to the system. Always use a power cable with a grounded plug, such as the one supplied with the system.

Environmental specifications

Characteristic
Specification
Ambient Temperature Non-Operating
-40˚ to +60˚ C
Ambient Temperature
Operating
10˚ to +40˚ C
Relative Humidity
Operating 20% to 80% from -5 to +45 C
Non-Operating 10% to 80% from -30 to +60 C
Do not operate with visible moisture on the circuit boards
Operating Altitude
To 10,000 feet
IEC 950 compliant to 2000 meters
Storage Altitude
To 40,000 feet
Non-Operating
Mechanical Shock
Class 5 (30G) Thomson Grass Valley 001131500
Random Vibration
Operational: Class 6 Thomson Grass Valley 001131500
Non-Operational: Class 5 Thomson Grass Valley 001131500
Transportation
Thomson Grass Valley 001131500
Equipment Type
Information Technology
Equipment Class
Class 1
Installation Category
Category II Local level mains, appliances, portable equipment, etc.
Pollution Degree
Level 2 operating environment, indoor use only.

Mechanical specifications

Dimension
Measurement
Height
7 in (177 mm)
Width
17.75 in (450 mm)
Depth1
25.75 in (654 mm)
Weight:
69.5 lbs (31.5 kg) maximum
1Adjustable rack-mounting ears accommodate different rack depth limitations.

Electrical specifications

The following sections describe the electrical specifications:

Serial Digital Video (SDI)

Parameter
Specification
Video Standard
525 Line or 625 Line component
Number of Inputs
1 per record channel
Number of Outputs
1 per play channel
Data format
Conforms to SMPTE 259M (SD) and 292M (HD)
Number of bits
10bits
Embedded Audio Input
SD data format conforms to SMPTE 259M (48kHz, 20bits)
HD data format conforms to SMPTE 299.
48 kHz (locked to video) and 16- or 24- bit PCM
Compatible with AC-3 and Dolby-E
User selectable audio group 1- 4
Embedded Audio Output
Output data format is 48 kHz 24-bit
User can disable embedded audio on SDI output
Connector
BNC, 75 ohm, No loop-through
Max Cable Length
225 meters (738 ft)
(Belden 8281 type cable)
Return Loss
Š15db, 5Mhz to 270Mhz

Genlock Reference

Characteristic
Description
Signal Type
NTSC/PAL Color Black Composite Analog
Connectors
2 BNC, 75 ohm passive loop through
Burst Frequency Lock Range
PAL,±10 Hz at subcarrier
NTSC, ±20 Hz at subcarrier
Signal Amplitude Lock Range
Stays locked to +6 dB and -3 dB
Input Return Loss
Š40 dB to 5 MHz

System Timing

Characteristic
Description1
Encoder timing
Derived from the video input
Nominal Playback Output Delay
Adjustable
(Default: Zero timed to reference genlock)
SD Output Delay Range
(Independent for each play channel)
525 lines
 Frames: 0 to +1
 Lines: 0 to +524
 Samples: 0 to +1715 clock samples
625 lines
 Frames: 0 to +3
 Lines: 0 to +624
 Samples: 0 to +1727 clock samples
HD Output Delay Range
(Independent for each play channel)
1080i at 29.97 FPS (SMPTE 274M-5)
 Frames: 0 to +1
 Lines: 0 to +1124
 Pixels: 0 to +2199
720p at 59.94 FPS (SMPTE 296M-2)
 Frames: 0 to +1
 Lines: 0 to +749
 Pixels: 0 to +1649
1080i at 25 FPS (SMPTE 274M-6)
 Frames: 0 to +1
 Lines: 0 to +1124
 Pixels: 0 to +2639
720p at 50 FPS (SMPTE 296M-3)
 Frames: 0 to +1
 Lines: 0 to +749
 Pixels: 0 to +1979
Loop through
On SD-only models, the video, AES, and LTC inputs pass to the their output connectors as loop through. This is on record channels only.
On HD/SD models there is no loop through of any type
E-to-E video
Not supported
1All delay values shown are relative to Black Reference.

AES/EBU Digital Audio

Parameter
Specification
Standard
AES3
Audio Inputs
4 Channels per video input; 2 dedicated BNC connectors per video input; two channels per BNC connector
8 Channels of embedded audio from video input.
Supports 48kHz, 16 bit, 20 bit, or 24 bit digital audio sources.
Audio Outputs
4 Channels per video output; 2 dedicated BNC connectors per video output; two channels per BNC connector
8 Channels of embedded per video output.
Audio mapping is direct and fixed, the first four channels are the same for AES and embedded, the last four channels are only embedded.
AES outputs are active at all times; embedded audio insertion on outputs can be disabled.
Audio is output using a 48kHz clock derived from the video reference.
Supports 16- or 24-bit media.
On playout, audio is synchronized with video as it was recorded.
Input Impedance
75 ohms, unbalanced
Audio shift
Configurable relative to the incoming video on record or playout.

LTC Input/Output

Parameter
Specification
Standard
SMPTE 12M Longitudinal Time Code, AC coupled, differential input
Number of Inputs
1 per video input - Female XLR
Number of Outputs
1 per video output - Male XLR
Input Impedance
1K ohm
Output Impedance
50 ohm
Minimum Input Voltage
0.1 V peak-to-peak, differential
Maximum Input Voltage
2.5 V peak-to-peak, differential
Nominal Output Voltage
2.0 V peak-to-peak differential.
LTC Reader
LTC reader will accept LTC at rates between 1/30 and 80 times the nominal rate in either forward or reverse directions.
LTC Transmitter
LTC transmitter outputs LTC at the nominal frame rate for the selected standard at 1x speed, forward direction only.

VITC Input/Output

Parameter
Specification
VITC
lines 10-20 NTSC (525 Line); lines 10-22 PAL (625 Line)
VITC is decoded on each SDI input and inserted on each SDI output.
VITC Reader configurable for a search window (specified by two lines) or set to manual mode (based on two specified lines).
VITC Writer inserts VITC data on two selectable lines per field in the vertical interval. The two lines have the same data.
VITC is not decoded off of the video reference input.

RS-422 specification

The RS-422 interface conforms to ANSI/SMPTE 207M-1997 standard (SMPTE 422).

GPI I/O specifications

Characteristic
Description
Number of Inputs/Outputs
12 inputs and 12 outputs.
Connector type
25pin D
GPI Input
TTL 0-0.8 V Low; 2.4-5 V High; 1 mA external current sink
GPI Output
Max Sink Current: 100 ma; Max Voltage: 30 V
Outputs are open drain drivers.
Max. voltage when outputs are open = 45V
Max. current when outputs are closed = 250ma
Typical risetimes approximately 625ns
Typical falltimes approximately 400ns

Operational specifications

Topics include:

Video codec description – SD-only models

Format
Sampling
Frame Rate
Data Rate
Other
DVCPRO25 (720X480/576)
4:1:1
29.97, 25
3.6 MBps
DVCPRO501 (720X487.5/585)
4:2:2
29.97, 25
7.2 MBps
DVCAM (720X480/576)
4:1:1/4:2:0
29.97, 25
3.6 MBps
MPEG-2 (720X480/576)
4:2:0
29.97, 25
2-15 Mbps
I-frame and long GoP
MPEG-2 (720X480/576)
4:2:2
29.97, 25
4-50 Mbps
I-frame and long GoP
MPEG-2 (720X512/608)
4:2:2
29.97, 25
4-50 Mbps
I-frame and long GoP
D10/IMXa (720X512/608)
4:2:2
29.97, 25
30, 40, 50 Mbps
I-frame only
1DVCPRO50 / D10/IMX operation is a licensable option.

Video codec description – HD/SD models

Format
Sampling
Frame Rate
Data Rate
GoP
SD formats
MPEG-2 (720X480/576)
4:2:0
29.97, 25
2-15 Mbps
I-frame and long GoP
MPEG-2 (720X480/576)
4:2:2
29.97, 25
4-50 Mbps
I-frame and long GoP
MPEG-2 (720X512/608)
4:2:2
29.97, 25
4-50 Mbps
I-frame and long GoP
HD formats1
MPEG-2 (1920x1080)
4:2:0
29.97, 25
20-80 Mbps
I-frame and long GoP2
MPEG-2 (1920x1080)
4:2:2
29.97, 25
20-100 Mbps
I-frame and long GoP
MPEG-2 (1280x720)
4:2:0
59.94, 50
12-80 Mbps
I-frame and long GoP
MPEG-2 (1280x720)
4:2:2
59.94, 50
20-100 Mbps
I-frame and long GoP
1Low bitrate I-frame encoding is not recommended
2Decode of lower bit rate is possible

Playout of multiple formats

The K2 Media Client automatically handles material of various types and formats as specified in the following sections:

Playout on SD-only models

On SD-only models, for a given frame rate, you can play clips of any format back-to-back on the same timeline. Refer to table Video codec description – SD-only models earlier in this chapter for a list of the supported formats.

On SD-only models, both 16:9 and 4:3 resolution formats can be played on the same timeline. Refer to Aspect ratio conversions.

Both SD-only and HD/SD models support mixed clips with uncompressed and compressed (Dolby-E) audio on the same timeline. (requires external Dolby-E decoder).

Refer to VBI/Ancillary data specifications for specifications on how SD-only models handle VBI data and ancillary data.

Playout on HD/SD models

On HD/SD models, for similar frame rates (25/50 fps or 29.97/59.95 fps), MPEG SD material transferred or recorded into the K2 Media Client along with its audio is up-converted when played on a HD output channel. Likewise, HD material is down-converted along with its audio when played on SD output channel. HD and SD clips can be played back-to-back on the same timeline, and aspect ratio conversion is user configurable. Refer to Aspect ratio conversions. Refer to the following tables for specifications on SD and HD conversions.

Refer to VBI/Ancillary data specifications for specifications on how HD/SD models handle VBI data.

25/50 fps conversions on HD/SD models

Converted SD format
Converted HD formats
625 at 25 fps
1080i at 25 fps
720p at 50 fps
Source
SD format
625 at 25 fps
No conversion
Up-convert
SD to HD
Up-convert
SD to HD
Source
HD formats
1080i at 25 fps
Down-convert
HD to SD
No conversion
Cross-convert from 1080i to 720p
720p at 50 fps
Down-convert
HD to SD
Convert
HD to HD
No conversion

29.97/59.95 fps conversions on HD/SD models

Converted SD format
Converted HD formats
525 at 29.97 fps
1080i at 29.97 fps
720p at 59.94 fps
Source
SD format
525 at 29.97 fps
No conversion
Up-convert
SD to HD
Up-convert
SD to HD
Source
HD formats
1080i at 29.97 fps
Down-convert
HD to SD
No conversion
Convert
HD to HD
720p at 59.94 fps
Down-convert
HD to SD
Convert
HD to HD
No conversion

Aspect ratio conversions

Source aspect ratio
Source image
Conversion option
Conversion description
Converted aspect ratio
Converted image
4:3

Bar
The 4:3 aspect ratio is maintained, centered on the screen, with black bars filling the left and right portions of the 16:9 display.
16:9

Half Bar
The picture aspect ratio is maintained, but the image is slightly enlarged. The top and bottom of the image are slightly cropped, and thin black bars fill the left and right portions of the 16:9 display.
16:9

Crop
The picture aspect ratio is maintained, but the image is enlarged so that it horizontally fills the HD display. The top and bottom of the 4:3 SD image are cropped to fit in the 16:9 display.
16:9

Stretch
The picture aspect ratio is distorted. The image fills the screen vertically without cropping, and is stretched horizontally to fill the 16:9 display. This conversion up-converts Full Height Anamorphic (FHA) 16:9 SD material.
16:9

16:9

Bar
The 16:9 aspect ratio is maintained, centered on the screen, with black bars filling the top and bottom portions of the 4:3 display.
4:3

Half Bar
The picture aspect ratio is maintained, but the image is slightly enlarged. The left and right sides the image are slightly cropped, and thin black bars fill the top and bottom portions of the 4:3 display.
4:3

Crop
The picture aspect ratio is maintained, but the image is enlarged so that it vertically fills the SD display. The left and right sides of the 16:9 HD image are cropped to fit in the 4:3 SD display
4:3

Stretch
The picture aspect ratio is distorted. The image fills the screen horizontally without cropping, and is stretched vertically to fill the 4:3 display. This conversion generates Full Height Anamorphic (FHA) 16:9 SD material.
4:3

VBI/Ancillary data specifications

The K2 Media Client supports SD Vertical Blanking Interval (VBI) data and HD Ancillary (Anc) data as specified in the following sections:

VBI data support on SD-only models

Video format
Compressed VBI
Uncompressed VBI
Closed Captioning
Comments
DVCPRO25
525 line (NTSC)
Not supported
Not supported by DVCPRO25 format
Supported, as native to DVCPRO25. VCHIP data supported.
DVCPRO25
625 line (PAL)
Not supported
Not supported by DVCPRO25 format
Not supported.
Teletext not supported
DVCPRO50
525 line (NTSC)
Supported
Not supported by DVCPRO50 format
Supported, as native to DVCPRO50 (compressed VBI). VCHIP data supported.
DVCPRO50 is a licensable option.
DVCPRO50
625 line (PAL)
Supported
Not supported by DVCPRO50 format
Closed Captioning not supported.
Teletext supported, as native to DVCPRO50 (compressed VBI).
DVCAM
525 line (NTSC)
Not supported
Not supported by DVCAM format
Supported, as native to DVCAM.
DVCAM
625 line (PAL)
Not supported
Not supported by DVCAM format
Closed captioning and teletext supported, as native to DVCAM.
MPEG-2
525 line (NTSC)
Supported as 16 lines per field.
Range: 7–22
Supported. Six lines per field. User selectable. Range: 10–22
Selected lines are saved in MPEG user data space and restored on playout.
Supported and always on. Not selectable.
MPEG-2
625 line (PAL)
Supported as 16 selectable lines per field.
Range: 7–22
Supported. Six lines per field. User selectable. Range: 6–22
Selected lines are saved in MPEG user data space and restored on playout.
Teletext not supported1
MPEG-D10
525 line (NTSC)
Supported
Not supported by D10 format.
Supported, as native to D10.
MPEG-D10
625 line (PAL)
Supported
Not supported by D10 format.
Closed captioning and teletext supported, as native to D10.
1For 625/PAL, CC user data is disabled, so the only way to get Teletext is by either using Uncompressed VBI Line 21 (if an MPEG format), or Compressed VBI for the 625/PAL formats.

Only Luma VBI/Closed-captioning data is saved/encoded. Chroma VBI/Closed-captioning data is ignored on playback.

Ancillary data is not supported on SD-only models, except as data bridging when material is transferred to or from a HD/SD model. Refer to Data bridging of native material on HD/SD models.

VBI data support on HD/SD models

Video format
Compressed VBI
Uncompressed VBI
Closed Captioning
Comments
SD
MPEG-2
525 line (NTSC)
Supported for record. Not supported for playback.
Supported as six selectable lines per field. Range: 10–22
Selected lines are saved in MPEG user data space and restored on playout.
Supported and always on. Not selectable.
SD
MPEG-2
625 line (PAL)
Supported for record. Not supported for playback.
Supported as six selectable lines per field. Range: 6–22
Selected lines are saved in MPEG user data space and restored on playout.
Teletext not supported1
1To pass through PAL MPEG-2 Teletext to playout, record it on VBI line 21, compressed or uncompressed.

Only Luma VBI/Closed-captioning data is saved/encoded. Chroma VBI/Closed-captioning data is ignored on playback.

Ancillary data support on HD/SD models

Video format
Data
Supported as follows:
HD MPEG-2
Vertical interval ancillary data packets
Extracted at input and stored on an ancillary data track. Upon playout, the data packets are inserted into the video stream on specified lines. Maximum 8 packets per field.

Luma ancillary data packets are stored. Chroma ancillary data packets are not supported. Both VANC and HANC packets are stored if they are luma packets.

Data bridging of native material on HD/SD models

When MPEG-2 material that was recorded on a HD/SD model is converted on a HD/SD model, data is bridged as follows:

Source format
Source
data
Conversion
Converted format
Converted
data
SD
525 line
Closed-captioning (CC) on line 21 (EIA-608) can be stored as UserData CC packets1 or UserData VBI Line21 (Uncompressed VBI Line21)
Up-convert
HD
Ancillary Closed Caption EIA-708-B packets
SD
625 line
Teletext on line 21
No up conversion to HD
SD
625 line
525 line
Ancillary data
No up conversion to HD
HD
EIA-708 & 608 Ancillary data packets
Down-convert
SD
Closed-captioning on line 21 (EIA-608 standard).
HD
Teletext
No down conversion to SD
HD
1080i
Ancillary data
Cross-convert
HD
720p
Moved to valid lines
HD
720p
Ancillary data
Cross-convert
HD
1080i
Moved to valid lines. Any data on lines 21-25 is moved to line 20 on 1080i output.
1UserData CC packets always on. If CC exists, it is recorded and played back.

HD/SD models data compatibility with PVS models

When material is transferred between a PVS Profile XP Media Platform and a K2 Media Client, SD VBI data and HD Ancillary data is supported as follows:

Source device
Source format
Source
data
Destination device
Data support:
SD Playout
Data support:
HD Playout
PVS
SD MPEG-2
Any supported on PVS
SD-only K2 Media Client
All supported
NA
Uncompressed VBI
HD/SD K2 Media Client
Yes
Yes, with data bridging for CC only. Other VBI lines are discarded.
Closed captioning
HD/SD K2 Media Client
Yes
Yes.
Ancillary data packets
Compressed VBI
HD/SD K2 Media Client
No
No
Ancillary data
HD/SD K2 Media Client
No
No
HD MPEG-2
Ancillary data
HD/SD K2 Media Client
Yes
Yes
SD-only K2 Media Client
SD MPEG-2
Any supported on K2 Media Client
PVS
All supported
NA
HD/SD K2 Media Client
SD MPEG-2
Compressed VBI
PVS
Yes
No
Uncompressed VBI
PVS
Yes
No
Closed captioning
PVS
No
No
HD MPEG-2
Ancillary data
PVS
Yes, with data bridging for ancillary CC packets only.
Yes

Internationalization

When you enable internationalization on a K2 Media Client, you can name your media assets in a local language. The K2 Media Client supports the local language name as specified in the following table:

System
Internationalization support
Media database
• All external views of movie assets can be represented as wide-file names
• AppCenter runs in Unicode
• Only movie assets and searchable User Data keys are Unicode.
Media file system
• Support for Kanji and wide-character file and folder names.
• File-folder representation of movie are internationalized, as well as the QuickTime reference file it contains.
• Key names (V:\PDR) remain unchanged, but are Unicode.
• Elementary streams remain as GUIDs, but are Unicode.
K2 Media Client applications
• Movie assets are described in Unicode.
• Application user interfaces are Unicode compliant.
Protocols
• AMP supports UTF8. Unicode movie names pass through as opaque bits.
• VDCP does not support UTF8. VDCP protocols are ASCII and VDCP protocol handler needs to convert movie names to Unicode.
FTP transfers
• Large file-name supported only via UTF8.
• All FTP client/server commands are in English
• The named movie asset is in wide-characters

Video network performance

The K2 Media Client supports streaming transfers to and from K2 Media Clients, M-Series iVDRs, Profile XP Media Platforms, or any device that supports General Exchange Format (GXF) as described in SMPTE 360M.

Parameter
Specification
Comments
Transfer bandwidth per internal storage K2 Media Client
Up to 50 MBytes per second
Transfer bandwidth per Level 2 K2 Storage
50 MBytes per second
Transfer bandwidth per Level 3 K2 Storage
80 MBytes per second
Additional K2 Media Servers dedicated as FTP servers add 80 MBytes per second each
Maximum concurrent transfers per transfer engine
4
Additional transfers are queued.
Minimum delay from start of record to start of transfer
20 seconds
Minimum delay between start of transfer into destination and start of play on destination
20 seconds.

Supported file input/output formats

The K2 Media Client can send and receive files of various formats using import, export, and transfer mechanisms.

Formats supported are as follows:

Streaming file format
Video elementary format
Audio elementary format
Transfer
Monitor
FTP
Other information
Import
Export
Import
Export
GXF
DV25/50
DVCAM
MPEG-2
48 kHz,
16 bit or
24 bit PCM or Dolby digital (AC-3)
Yes
Yes
Yes
Yes
Support for complex movies of like format. GXF is the K2 Media Client’s native file transfer format.
MXF
DV25/50
DVCAM
MPEG-2
MPEG Layer II audio.
48 kHz,
16 bit or
24 bit PCM or Dolby digital (AC-3)
Yes
Yes
Yes
Yes
Simple movies only.
Real time file transfer in and out with wrap/ unwrap of MXF Op 1a on host platform with no external platform required. Standard Definition only. Preservation of metadata as defined in the Operating Pattern 1a level of MXF. HD Ancillary data is not supported as part of the MXF transfer.
AVI
DV25
DV50
48 kHz
16 bit stereo PCM
Yes
Yes
No
No
Limit of two audio tracks
Quicktime
DV25
DV50
48 kHz
16 bit stereo PCM
Yes
Yes
No
No
Limit of two audio tracks
WAV audio
NA
48 kHz
16 bit stereo PCM
Yes
No
No
No
Limit of two audio tracks
Still image formats:
 BMP
 JPEG
 TIFF
NA
NA
Yes
No
No
No
Still images can be used as clips on the timeline.

Media file system performance

Parameter
Internal Storage Specification
External Storage Specification
Maximum number of clips
20,000
50,000
Minimum delay between start record and start playout when record and play is on the same K2 Media Client
6 seconds
10 seconds
Minimum delay between start record and start playout when record and play is on different K2 Media Clients
NA
20 seconds
Maximum length continuous record
24 hours
24 hours

Protocols supported

The following protocols are supported for remote control of the K2 Media Client:

Protocol
Support
AMP
Commands are available via Ethernet or RS-422 serial ports. Ethernet access is possible using DCOM as well as the socket interface to the AMP server.
The AMP's socket interface uses IANA assigned port number 3811 for both TCP and UDP.
VDCP
VDCP preroll: 10 frames for command latency or buffer precharge
The Protocol Recorder allows a default bin to be assigned to each record channel.
The following categories of commands are not supported l:
1. Deferred (Timeline) Commands --these are the basic timeline commands but use the time specified by the PRESET STANDARD TIME
2. Macro commands
3. Archive Commands
BVW
A subset of BVW commands is supported through the Protocol player.
Insert/Edit is not supported.

Transfer compatibility considerations

When transferring material between a K2 Media Client and other Grass Valley products, you must consider the specifications of the different products. The following table illustrates some of these considerations:

Source device
Destination device
Material transferred
Compatibility
K2 Media Client
Profile XP Media Platform
HD 4:2:0, 80 Mb or less
Supported. Can be played out.
K2 Media Client
Profile XP Media Platform
HD 4:2:2
Supported for storage on the only. Transfer is successful but HD 4:2:2 is not supported for playout.
K2 Media Client
M-Series iVDR
1080i
Not supported.
Profile XP Media Platform
K2 Media Client
Any type supported except Ancillary data in SD.
The Profile XP must have system software 5.4.7 or higher in order for the material on the Profile XP to be visible (via Browse) from the K2 Media Client. Otherwise, you must enter an explicit path to the material and add the remote host in Configuration Manager before the transfer. Machine names must be entered in compliance with UIM naming conventions.

Control point PC system requirements

If you are building your own control point PC, the machine you chose must meet the following requirements. These requirements assume that the PC is dedicated to its function as the control point for the K2 Media Client and that no other applications run on the PC that could interfere with system performance.

Control point PC system requirements are as follows:



Requirements
Comments
Operating System
Microsoft Windows XP Professional, Service Pack 2
RAM
Minimum 512 MB, 1 GB recommended
Graphics acceleration
Must have at least 128 MB memory
Processor
Pentium 4 or higher class, 2 GHz or greater
Hard disk space
400 MB
Microsoft .NET Framework
Version 1.1
Java JRE
1.3.1_12 and 1.4.2_05
Required for the HP Ethernet Switch configuration interface, which is used for K2 Storage Systems (external storage).


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