D21m System
6.3.7

3G SDI I/O Card (,,)

A949.0451		 The 3G/HD/SD SDI (serial digital interface) embedder/de-embedder cardis able to handle video signals according to the 3G (full HD), HD and SD
standards; both level A and B versions of 3G signals are supported. Standard
selection is performed automatically. The card can act as an eight- or 16-channel embedder, an eight- or 16-channel de-embedder, or any combination
thereof. For the D21m I/O system it can be an eight- or 16-channel audio input
card, an eight- or 16-channel audio output card, or an eight- or 16-channel
input/output card. These modes are determined by DIP switches located on
the card (or by software, if supported).		 The SDI standard defines up to 16 audio channels transmitted within a video
signal. These 16 channels are divided into four groups of four channels each.
Selection of which channels are to be embedded or de-embedded is performedby DIP switches on the card (or by software, if supported): either groups 1&2,groups 3&4, or all. It is also possible to clear the SDI data structure possiblypresent in the incoming video signal and to allocate the groups from scratch.		 The D21m SDI card hosts SRCs (sampling rate converters) for both the audioinputs (de-embedding) and outputs (embedding). So the mixing console canrun independently of the video sync used for SDI. The sampling rate converters can be bypassed; if so, the SDI card is fully compatible to transmitting
the Dolby® E audio format. If power is switched off, the input is hardwarebypassed to output A. If the SRCs are bypassed, the card works at a sampling
rate of 48 kHz only.		 Video signals can be delayed in frames; maximum delay is 4 frames (3G),
8 frames (HD) or 15 frames (SD). The delay can be set by DIP switches.		 The test pattern generator is either automatically activated as soon as the SDI
input signal is invalid, or manually. It either selects its output signal format
according to the last valid SDI input signal or to the DIP switch setting on thecard. Output signal is a black frame or a color bar frame, both with embedded
audio. All generator settings and presets can be made with DIP switches on
the card.		
Operating modes
8- or 16-ch console output (embedder) and/or			
8- or 16-ch console input (de-embedder)		Selectable SDI groups
groups 1&2, and/or groups 3&4		Connectors
IN, OUT A, OUT B, THROUGH (BNC, 75 Ω)		Cable length
max. 50 m		
Video delay
max. 4 frames (3G); 8 frames (HD); 15 frames (SD)		
Audio latency* (de-embedder + embedder) 3G/HD: <800 µs; SD: <2.6 ms		Current consumption (5 V)
1A		
Operating temperature
0-40 °C		* Latency times are identical for all channels and all groups.

52Document generated: 04.03.15

D21m System

3G SDI Embedder/De-Embedder Module
PLL
48 kHzMaster Clk

Slave Clk

SD/HDThru
SD/HDIn

16VideoDelay

Audio In
Ch 1...16

Audio Out
Ch 1...16

TX
SD/HD
Out B

Audio In
Ch 1...16

Out Clk

In ClkAudio Out
Ch 1...16

16 x SRC
Bypass

16SD/HDOut A

Out Clk

16 x SRC
BypassTest Pattern
Generator

SDI HW
BypassIn Clk

Backplane Connector

De-Embedder

RXSettings

EmbedderStatusStatusSDI
ClkID

ONLEDsSDI LOCKHD

Indicates a valid SDI signal at the input.
Indicates a valid (3G or HD) HD SDI signal at the input.

DIP Switches

S1, S2, S3

See next page (factory default setting: All OFF)

Document generated: 04.03.15

53

D21m System

DIP SwitchDefinition
S1.1 S1.2 S1.3 S1.4 S1.5 S1.6 S1.7 S1.8
OFF OFF xxx
xx
x All embedders active, card has 16 output channels
OFF ONxxxxxx Only groups 1 and 2 will be embedded, groups 3 and 4 are transparent. Card has 8 output channels
ON OFF xxxxx
x Only groups 3 and 4 will be embedded, groups 1 and 2 are transparent. Card has 8 output channels
ON ONxxxxx
x All embedders inactive, card has 0 output channels
x
x OFF OFF xxx
x All de-embedders active, card has 16 input channels
x
x OFF ONxxx
x Only groups 1 and 2 will be de-embedded. Card has 8 input channelsxx
ON OFF xxxx Only groups 3 and 4 will be de-embedded. Card has 8 input channelsxx
ON ONxxx
x All de-embedders inactive, card has 0 input channels
xxx
x OFF xx
x SRCs bypassedxx
x
x
ONx
x
x SRCs activexxxxx OFF xx Signal not bypassed
xxxxxONxx Signal bypassed (with relay)
xxxxx
x OFF x Signal not bypassed
xxxxxxONx Signal bypassed (electronically)
xxxxxxx OFF C-Bits newly generated
xxxxxxx
ON C-Bits taken from D21m (reserve for future)
DIP Switch
Definition
S2.1 S2.2 S2.3 S2.4 S2.5 S2.6 S2.7 S2.8
OFF xxxxxx
x SDI Data structure not cleared
ONxxxxxx
x SDI Data structure cleared
x OFF OFF OFF OFF xx
x Generator format: 720 p 60 (HD)x OFF OFF OFF ONxxx Generator format: 720 p 50 (HD)x OFF OFF ON OFF xx
x Generator format: 1080 i 60 (HD)x OFF OFF ON ONxxx Generator format: 1080 p 30 (HD)x OFF ON OFF OFF xx
x Generator format: 1080 i 50 (HD)x OFF ON OFF ONxxx Generator format: 1080 p 25 (HD)x OFF ON ON OFF xx
x Generator format: 1080 p 24 (HD)x OFF ON ON ONxxx Generator format: 525 (SD)x
ON OFF OFF OFF xx
x Generator format: 625 (SD)x
ON OFF OFF ONxxx Generator format: 625 (SD)x
ON OFF ON OFF xx
x Generator format: 625 (SD)x
ON OFF ON ONxxx Generator format: 1080 p 60 (3G)x
ON ON OFF OFF xx
x Generator format: 625 (SD)x
ON ON OFF ONxxx Generator format: 1080 p 50 (3G)x
ON ON ON OFF xx
x Generator format: 625 (SD)x
ON ON ON ONxxx Generator format: Gen OFFxxxx
x OFF xx Generator output signal: Color barsxxxxxONx
x Generator output signal: Black framexxxxx
x OFF x Generator HD drop frequency: 74.25 MHzxxxxxx
ONx Generator HD drop frequency: 74.176 MHzxxxxxx
x OFF Generator format manual: Auto-format
xxx
xxx
x
ON Generator format manual: Pre-selectef format
DIP SwitchDefinition
S3.1 S3.2 S3.3 S3.4 S3.5 S3.6 S3.7 S3.8
OFF xxxxxx
x Generator active if lock fails
xxxx
x
x Generator forced to active
ON x
x OFF OFF OFF OFF xx
x Video delay: 0 frames
x OFF OFF OFF ONxx
x Video delay: 1 frame
x OFF OFF ON OFF xx
x Video delay: 2 frames
x OFF OFF ON ONxx
x Video delay: 3 frames
x
...
...
...
...
xxx ...
x
ON ON OFF ONxxx Video delay: 13 framesx
ON ON ON OFF xx
x Video delay: 14 framesx
ON ON ON ONxx
x Video delay: 15 frames
xxxxx
Reserved

54

Document generated: 04.03.15