Crystal Vision DDAA246 User manual

Crystal Vision Ltd., Lion Technology Park, Station Road East, Whittlesford, Cambridge, CB22 4WL, England.
E-mail: [email protected] Website: www.crystalvision.tv Tel: [phone] Fax: [phone]
DDAA246
SDI to composite monitoring encoder
with distribution amplifier

Crystal Vision Introduction
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Contents
1 Introduction 2
2 Card edge operation 4
3 Hardware installation 6
3.1 Universal rear connectors 6
Rear module connections with RM18 6
Rear module connections with RM02 7
Rear module connections with RM01 7
3.2 General purpose interface 8
2U frame GPI Connections 8
1U frame GPI connections 9
DTB GPI connections 9
3.3 Configuration 10
Changing the standard selection mode 10
4 Problem solving 11
5 Specification 13

Crystal Vision Introduction
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1 Introduction
The DDAA246 is a dual 8-bit Serial Digital to Analogue Composite converter with re-
clocked serial and analogue outputs.
The universal connection system allows a mixture of Crystal Vision modules in the frame.
The modules plug in the front and the rear connectors plug in the rear. Depending on
frame design, a hinged or removable front panel reveals LED indication of input and PSU
status when opened.
DDAA246 serial digital to analogue converter
The DDAA246 may be used with the RM01 single slot rear connector, the RM02
quadruple slot rear connector and the RM18 double slot rear connectors. The RM01
allows the highest frame packing density, with reduced output connections, whilst the
RM18 and RM02 provide more outputs but with reduced packing density. Only the RM18
with 12 BNCs per module allows access to all module connections.
The RM01 allows 12 modules to fit in a 2U frame, the RM02 allows 9 modules to fit in a
2U frame and the RM18 allows 6 modules to fit in a 2U frame.
The analogue outputs can be switched between input video and an internal test pattern
under local or remote (GPI) control. It accepts either 625 or 525 line input, with automatic
detection.

Crystal Vision Introduction
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The main features are:
•Dual 8-bit Serial Digital to Analogue Composite converter
•Variable gain
•Automatic equalisation for up to 200 metres of coaxial cable.
•Up to two reclocked SDI outputs and three composite outputs per channel
•GPI/LED input presence indication
•Auto or manual PAL 625/NTSC 525 line selection
•VBI blanked or unblanked
•Modulated ramp test pattern or serial input
•NTSC setup on/off and chroma bandwidth select
•Card edge control

Crystal Vision Card edge operation
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2 Card edge operation
The front edge of the DDAA246 card provides power rail monitoring, signal status, gain
adjustment and configuration switches.
DDAA246 front edge view
The 8-way front edge switch provides access to the following:
•Test – for each channel, composite output is test pattern or SDI input
•525 – for each channel, force standard if board is NOT in AUTO
•VBI – for each channel, blank or unblank VBI data
•SET – for both channels, apply 7.5 IRE in NTSC
•CBW – for both channels, change chroma bandwidth
Lever Up Down
1TEST A Composite output is incoming SDI data Composite output is modulated ramp test pattern
2525 A 625-line if manual selected on jumper PL4 525-line if manual selected on jumper PL4
3VBI A Blank PAL lines 7 to 22 & 320 to 335,
NTSC lines 10 to 20 & 273 to 282
Unblank PAL lines 7 to 22 & 320 to 335, NTSC
lines 10 to 20 & 273 to 282
4SETUP No setup Adds 7.5 IRE of setup to Y & reduces Y gain as
required. Only affects 525-line output
5C BW Chroma Bandwidth 1.3MHz Chroma Bandwidth 650kHz
6TEST B Composite output is incoming SDI data Composite output is modulated ramp test pattern
7525 B 625-line if manual selected on jumper PL5 525-line if manual selected on jumper PL5
8VBI B Blank PAL lines 7 to 22 & 320 to 335,
NTSC lines 10 to 20 & 273 to 282
Unblank PAL lines 7 to 22 & 320 to 335, NTSC
lines 10 to 20 & 273 to 282

Crystal Vision Card edge operation
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LED indicator assignments
LED Colour Meaning when lit
INPUT A Green (bottom) Valid serial digital input detected channel A
ERROR A Red (top) Serial digital input lock error channel A
625 A Yellow (top) 625-line output channel A
525 A Yellow (bottom) 525-line output channel A
INPUT B Green (bottom) Valid serial digital input detected channel B
ERROR B Red (top) Serial digital input lock error channel B
625 B Yellow (top) 625-line output channel B
525 B Yellow (bottom) 525-line output channel B
PSU Green (top) Power supply voltage present
Adjusting input gain
Composite gain is continuously variable by ±10% using the GAIN control. The
DDAA246 is supplied with a factory-set gain of 0dB.
Cable equalisation
Cable equalisation is adjusted automatically for up to 200 meters of Belden 8281 or
equivalent.
On-board jumper link settings
Please refer to section 3.4 Configuration to set the following option when using card edge
control:
•Changing the standard selection – PL8, AUTO/Manual

Crystal Vision Hardware installation
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3 Hardware installation
The DDAA246 Serial Digital to Analogue Composite converter fits into all Crystal
Vision rack frames. All modules can be plugged in and removed while the frame is
powered without damage.
3.1 Universal rear connectors
When used with a single height rear connector, the 2U Indigo or FR2AV frame will house
up to 12 modules and dual power supplies, the 1U Indigo or FR1AV frame will house 6
modules and a single power supply. The 1U Desk Top Box has a built-in power supply
and will house up to 2 modules with a single height rear connector.
The 2U and 1U frames have a hinged front panel which gives access to the PSU and all
modules. The Desk Top Box has a removable front. The universal frame wiring system
allows any of the interface range of modules to be fitted in any position with the use of
removable rear modules.
The DDAA246 may be used with the RM01 single slot rear connector, the RM02
quadruple slot rear connector and the 18 double slot rear connectors.
Rear module connections with RM18
RM18 fits in all frames Description
RM18
•6 modules in 2U , 3 in 1U, 1 in a
DTB
•1 module per rear connector
•12 connections per module
available
•Card fits in upper slot
•No card fits in lower slot
BNC Connection
SDI(A) IN Channel A Serial Digital Input
SDI(A) OUT Channel A Serial Digital Output
PAL/NTSC(A) Channel A Composite Video Output
PAL/NTSC(B) Channel B Composite Video Output
SDI(B) OUT Channel B Serial Digital Output
SDI(B) IN Channel B Serial Digital Input

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Rear module connections with RM02
RM02 fits in a 2U Indigo or FR2AV frame Description
RM02
•9 modules per 2U frame
•3 modules per rear connector
•9 connections per module
available
•Card 1 fits in slots 1, 5 and 9
•Card 2 fits in slots 2, 6 and 10
•Card 3 fits in slots 4, 8 and 12
•No card fits in 3, 7 or 11
BNC Single-channel configuration
SDI(A) IN Serial Digital Input channel A
SDI(A) OUT Reclocked Serial Digital Output channel A
PAL/NTSC(A) Composite Video Output channel A
SDI(A) OUT Reclocked Serial Digital Output channel A
SDI(B) OUT Reclocked Serial Digital Output channel B
PAL/NTSC(B) Composite Video Output channel B
SDI(B) OUT Reclocked Serial Digital Output channel B
PAL/NTSC(B) Composite Video Output channel B
SDI(B) IN Serial Digital Input channel B
Rear module connections with RM01
RM01 fits in all frames Description
RM01
•12 modules in 2U, 6 in 1U &
2 in a DTB
•All frame slots can be used
•6 connections available
BNC Connection
NTSC/PAL B Composite Video Output channel B
SDI(A) IN Serial Digital Input channel A
SDI(A) OUT Re-clocked Serial Digital Output channel A
NTSC/PAL A Composite Video Output channel A
SDI(B) OUT Re-clocked Serial Digital Output channel B
SDI(B) IN Serial Digital Input channel B

Crystal Vision Hardware installation
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3.2 General purpose interface
The external GPI control lines 'a' to 'f' at the frame remote connectors may be used to
control the DDAA246 remotely with remote switches emulating some of the front panel
switches. The GPI lines are normally pulled up on-board to +5V via 10kΩ and will
withstand up to +35V.
GPI Connections
OPEN CONNECT TO GROUND
‘a’ Channel A 625-line if manual standard
selected on jumper PL4
Channel A 525-line if manual standard
selected on jumper PL4
‘b’ Blank channel A PAL lines 7 to 22 & 320 to
335, NTSC lines 10 to 20 & 273 to 282.
Unblank channel A PAL lines 7 to 22 & 320
to 335, NTSC lines 10 to 20 & 273 to 282.
‘c’ Channel B 625-line if manual standard
selected on jumper PL5
Channel B 525-line if manual standard
selected on jumper PL5
‘d’ Blank channel B PAL lines 7 to 22 & 320 to
335, NTSC lines 10 to 20 & 273 to 282.
Unblank channel B PAL lines 7 to 22 & 320
to 335, NTSC lines 10 to 20 & 273 to 282.
‘e’ Channel A input present Channel A input absent
‘f’ Channel B input present Channel B input absent
The following tables show the GPI pinout for each frame:
2U frame GPI Connections
GPI lines ‘a’ to ‘f’ of each card connect to one of four rear remote connectors as follows:
Slot no. ‘a’ pin ‘b’ pin ‘c’ pin ‘d’ pin ‘e’ pin ‘f’ pin
18 (1) 9 (1) 18 (1) 26 (1) 19 (2) 20 (2)
27 (1) 16 (1) 17 (1) 25 (1) 10 (2) 11 (2)
38 (3) 9 (3) 18 (3) 26 (3) 19 (4) 20 (4)
47 (3) 16 (3) 17 (3) 25 (3) 10 (4) 11 (4)
55 (1) 6 (1) 15 (1) 24 (1) 1 (2) 2 (2)
64 (1) 14 (1) 13 (1) 23 (1) 3 (2) 4 (2)
75 (3) 6 (3) 15 (3) 24 (3) 1 (4) 2 (4)
84 (3) 14 (3) 13 (3) 23 (3) 3 (4) 4 (4)
93 (1) 12 (1) 22 (1) 21 (1) 12 (2) 13 (2)
10 10 (1) 11 (1) 19 (1) 20 (1) 21 (2) 22 (2)
11 3 (3) 12 (3) 22 (3) 21 (3) 12 (4) 13 (4)
12 10 (3) 11 (3) 19 (3) 20 (3) 21 (4) 22 (4)
Table shows Pin number (Remote number)
Note: Remote 1 and Remote 3 are 26 way high density ‘D’ type female sockets and frame
ground is pin 2 and +5V @500mA is pin 1 in each case.
Remote 2 and Remote 4 are 26 way high density ‘D’ type male plugs and frame ground is
pin 6 and +5V @500mA is pin 15 in each case.

Crystal Vision Hardware installation
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1U frame GPI connections
GPI lines ‘a’ to ‘f’ of each card connect to one of two rear remote connectors as follows:
Slot no. ‘a’ pin ‘b’ pin ‘c’ pin ‘d’ pin ‘e’ pin ‘f’ pin
18 (1) 9 (1) 18 (1) 26 (1) 19 (2) 20 (2)
27 (1) 16 (1) 17 (1) 25 (1) 10 (2) 11 (2)
35 (1) 6 (1) 15 (1) 24 (1) 1 (2) 2 (2)
44 (1) 14 (1) 13 (1) 23 (1) 3 (2) 4 (2)
53 (1) 12 (1) 22 (1) 21 (1) 12 (2) 13 (2)
610 (1) 11 (1) 19 (1) 20 (1) 21 (2) 22 (2)
Table shows Pin number (Remote number)
Note: Remote 1: 26 way high density D-type socket. Frame ground is pin 2 and +5V @500mA
is pin 1.
Remote 2: 26 way high density D-type plug. Frame ground is pin 6 and +5V @500mA is
pin 15.
DTB GPI connections
GPI lines ‘a’ to ‘f’ of each card connect to the rear remote connector as follows:
Slot no. ‘a’ pin ‘b’ pin ‘c’ pin ‘d’ pin ‘e’ pin ‘f’ pin
1123456
291011121314
Note: Remote connector is 15 way normal density D-type socket. Frame ground is pin 15.

Crystal Vision Hardware installation
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3.3 Configuration
Jumper links are provided for the following settings:
•PL4/5– manual/AUTO standard selection
DDAA246 showing configuration jumpers
Changing the standard selection mode
With PL4 in the AUTO position, SDI A will automatically adjust to the 525- or 625-line
video standard of the incoming Serial Digital data. With PL4 in the MANUAL position
the video standard for SDI A will be set by the front panel DIL switch or GPI control.
With PL5 in the AUTO position, SDI B will automatically adjust to the 525- or 625-line
video standard of the incoming Serial Digital data. With PL5 in the MANUAL position
the video standard for SDI B will be set by the front panel DIL switch or GPI control.
DDAA246 showing configuration jumpers
Note: The AUTO mode may slightly extend the time required to synchronize a new signal.
The three potentiometers on the board are factory set and should not need re-adjustment.

Crystal Vision Problem solving
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4 Problem solving
The front edge of the card provides useful power rail monitoring in addition to card-edge
controls and status LEDs.
DDAA246 front edge view
LED indicator assignments
LED Colour Meaning when lit
INPUT A Green (bottom) Valid serial digital input detected channel A
ERROR A Red (top) Serial digital input lock error channel A
625 A Yellow (top) 625-line output channel A
525 A Yellow (bottom) 525-line output channel A
INPUT B Green (bottom) Valid serial digital input detected channel B
ERROR B Red (top) Serial digital input lock error channel B
625 B Yellow (top) 625-line output channel B
525 B Yellow (bottom) 525-line output channel B
PSU Green (top) Power supply voltage present
Basic fault finding guide
The +5V/PSU LED is not illuminated
Check that the frame PSU is functioning – refer to the appropriate frame manual for detailed
information
Check that the card is seated correctly in the frame
There is no video output
Check that a valid video input is present and that any cabling is intact
Try using the built-in modulated ramp test signal to check output cabling and monitoring
The video output is low quality
Check that the maximum cable length has not been exceeded
Check the card-edge chroma bandwidth setting
Why can I not have 7.5% IRE setup on one channel and 0% on the other?
The NTSC setup controls act on both channels at once
Why can I not have high chroma bandwidth one channel and low bandwidth on the other?
The chroma bandwidth controls act on both channels at once
I can only see a modulated ramp signal on one or more channels, where's the input video?
Check that the channel's TEST switch is in the UP position to view the input video

Crystal Vision Problem solving
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The card no longer responds to card edge control
Check that the card is seated correctly and that the Power OK LEDs are lit
If necessary re-set the card
Re-setting the card
If required, the card may be reset by simply removing the rack power and re-applying power after a
few seconds or by removing the card from the rack and then re-inserting the card
It is safe to re-insert the card whilst the rack is powered

Crystal Vision Specification
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5 Specification
General
Dimensions 100mm x 266 mm module with DIN 41612 connector
Weight 168g
Power consumption 8 W
Inputs
Video 2 x 270Mb/s serial digital to EBU Tech 3267-E and SMPTE-
259M.
Cable equalisation >200m Belden 8281 or equivalent.
Auto or manual 525/625 selection.
Outputs
Number and type: 2+2 reclocked serial digital loop through
3+3 composite analogue outputs; PAL-I/NTSC-M 1V into 75Ω
Each will drive >200m Belden 8281 or equivalent.
Gain adjustment
Continuous adjustment: ± 10% per channel
Performance
Frequency response: ± 0.2dB 0 to 3.5MHz. ± 0.3dB 0 to 5MHz
Blanking: To PAL/NTSC specification horizontally and vertically with
selectable VBI blanking - PAL lines 7-22 & 320-335 and NTSC
lines 10-20 & 273-282.
Signal to noise ratio: < -54dB weighted
Test functions
Internal test pattern: Modulated ramp
GPI lines
Inputs: 6 ( D-type on frame )
4 inputs: SDI 1: Standard select, VBI blank/unblank
SDI 2: Standard select, VBI blank/unblank
2 outputs: SDI1 input present, SDI2 input present
Status monitoring

Crystal Vision Specification
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LED display Front of card edge visual monitoring with LED indicators to
indicate:
PSU +5V rail present
Input present, I/P error and standard for each SDI input
Ordering information
DDAA246 Dual 8-bit Serial Digital to Analogue Composite converter
Indigo 2 2U frame without active control panel for up to 12 modules
Indigo 1 1U frame without active control panel for up to 6 modules
Indigo DT 1U Desk top box without active control panel for up to 2 modules
Indigo 2A 2U frame with active control panel for up to 12 modules
Indigo 1A 1U frame with active control panel for up to 6 modules
Indigo DTA 1U Desk top box with active control panel for up to 2 modules
Indigo 2S Statesman enabled only 2U frame for up to 12 modules
Indigo 1S Statesman enabled only 1U frame for up to 6 modules
Indigo DTS Statesman enabled only 1U Desk top box for up to 2 modules
RM01 Single slot rear module with 6 BNCs
RM02 Quad slot rear module with 27 BNCs for 3 boards
RM18 Dual slot rear module for 1 board with 12 BNCs