Crystal Vision Indigo Q-Down User manual

Q-Down
Broadcast down converter and
distribution amplifier
Crystal Vision Ltd., Lion Technology Park, Station Road East, Whittlesford, Cambridge, CB22 4WL, England.
Tel: [phone] Fax: [phone] [e-mail] www.crystalvision.tv

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Contents
1Introduction 3
2Hardware installation 4
2.1 Module configuration 4
2.2 Rear modules and signal I/O 5
Rear module connections with RM34 6
Rear module connections with RM45 6
2.3 General Purpose Interface (GPI) 7
3Card edge operation 10
3.1 Card edge controls 10
3.2 Card edge buttons 10
3.3 Reading card edge LEDs 11
Navigating card edge menus 11
4Using the front control panel 12
4.1 Module selected 12
Updating the display 13
4.2 The Q-Down active panel menu structure 14
The Q-Down menu tree 15
Output aspect ratio 15
Analogue video output format 16
Vertical bandwidth filters 16
The Status menu 17
5Statesman 18
5.1 Statesman operation 18

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5.2 Video properties 19
Board status 19
Analogue output format 19
Output aspect ratio 19
Vertical bandwidth 19
6Trouble shooting 20
Card edge monitoring 20
Basic fault finding guide 21
7Specification 22
Revision 1 RM45 information added 16-04-08
Revision 2. Centre cut aspect ratio and selectable processing delay added.
Software level 2.30. 06-04-09
Revision 3. Amendment of Fixed and Minimum Delay, page 5 15-03-10
Revision 4. Amendment of PL11 table, page 5 13-09-10
Revision 5. Link PL9 information amended, page 5 01-10-10

Crystal Vision Introduction
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1Introduction
The Q-Down is a broadcast down converter and distribution amplifier with a short processing
delay of 16 lines. Two reclocked input loop-throughs (eight with optional sub PCB fitted) are
available along with three Standard Definition link selectable SDI/analogue outputs. The
analogue outputs can be selected to give CVBS, Y/C, YUV or RGB. The output line rate at all
times will be the same as the input line rate.
There are three video delay settings available, minimum (processing delay), fixed (52 SD
lines) and frame.
Q-Down’s processing delay is determined by several factors such as inputformat, aspect ratio
selection and reclocker status. With a High Definition input the minimum processing delay
will be 16 SD lines with a full screen output. Selecting Letterbox will increase this delay to 52
SD lines. For a Standard Definition input the delay will be as little as 1µs with the reclocker
bypassed.
Q-Down converter
The main features are as follows:
•Selectable output aspect ratio (centre-cut, letterbox and anamorphic)
•High quality down conversion with a minimum of 16 lines of processing delay
(dependent on conversion selected) - selectable fixed delay also available
•Aspect ratio and vertical filter selection with a High Definition input
•Two input loop-throughs (Q-Down123 with RM34 rear module)
•Link selectable output formats - Standard Definition analogue and digital
•Six extra input loop throughs with optional sub PCB (Q-Down183)
Q-Down is a 100mm x 266mm module, which fits in the four standard frames and can be
integrated with any boards from the company’s full product range. Q-Down uses the RM34
and RM45 rear modules, two rear modules are required for extended loop throughs (Q-
Down183).

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2Hardware installation
2.1 Module configuration
There are six user settable links on the Q-Down - PL9, PL10 and PL11 on the PCB top side
and PL6, 7 and 8 on the bottom side. PL9 and PL10 are used for selective NTSC pedestal and
Betacam levels. PL11 sets the selectable processing delays. PL6-8 are used to select the range
of output formats.
The four potentiometers have been factory set and should not require further adjustments.
Q-Down top side
The surface-mounted LEDs on the top side of the PCB are not visible from the front of the
frame and are included for diagnostic purposes only.
Q-Down bottom side

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Link configurations
PCB top side
Link Function Towards front 1-2 Towards rear 2-3
PL9 Betacam Betacam levels Normal levels
PL10 Pedestal (NTSC) Pedestal applied (NTSC M) No pedestal applied (NTSC J)
PCB bottom side
Link Towards board edge 1-2 Away from board edge 2-3
PL6 CVBS / Y / G output Standard Definition serial digital output
PL7 CVBS / U / B / YC-Y output Standard Definition serial digital output
PL8 CVBS / V / R / YC-C output Standard Definition serial digital output
Link Function Towards top 1-2 Middle 2-3 Towards bottom 3-4
PL11 Processing delay Minimum Frame Fixed
With an HD video input the minimum processing delay will be 16 or 52 SD lines depending
on the selected conversion. The fixed delay will always be 52 SD lines and frame will be one
full video frame.
With an SD video input the minimum processing delay will become as little as 1µs. Fixed and
frame will remain 52 SD lines and one frame respectively.
Note: Analogue video output formats are selected via the board edge or remotely.
When the Y/C output format is selected the third output will give CVBS.
Engineering LEDs
These LEDs are included for diagnostic purposes and are not visible from the front of the
frame.
LED Illuminated Not Illuminated
LED3 Input present
LED4 Board configuring Board configured
LED5 Data
LED6 Link
2.2 Rear modules and signal I/O
The 4U Indigo 4 frame will house up to 24 single height modules with up to three power
supplies. The 2U Indigo 2 frame will house up to 12 single height modules and dual power
supplies. The 1U Indigo 1 frame will house six single height modules and a single or dual
power supply. The Indigo DT desk top boxes have a built-in power supply and will house up
to two single height modules. All modules can be plugged in and removed while the frame is
powered without damage.
Note:
For details of fitting rear connectors please refer to the appropriate frame manual.

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Rear module connections with RM34
The RM34 being a single height module will allow maximum packing density with the
maximum number of outputs available.
RM34 rear module connector Description
RM34
•24 Q-Down modules per
Indigo 4 frame
•12 per Indigo 2 frame
•Six per Indigo 1 frame
•2 per Indigo DT
•
All frame slots can be used
BNC I/O assignment
SD/CVBS/Y/G OUT Standard Definition SDI/CVBS, Y, G output
SD/CVBS/U/B/YCY OUT Standard Definition SDI/CVBS, U, B, YC-Y output
SD/CVBS/V/R/YCC OUT Standard Definition SDI/CVBS, V, R, YC-C output
HD/SD IN LOOP OUT High Definition/Standard Definition serial digital input reclocked loop-through
HD/SD IN LOOP OUT High Definition/Standard Definition serial digital input reclocked loop-through
HD/SD IN High Definition/Standard Definition serial digital input
Rear module connections with RM45
The RM45 is similar to the RM34 but an input loop-through has been replaced by a further SD
output giving up to four available outputs.
RM45 rear module connector Description
RM45
•24 Q-Down modules per
Indigo 4 frame
•12 per Indigo 2 frame
•Six per Indigo 1 frame
•2 per Indigo DT
•All frame slots can be used
BNC I/O assignment
SD/CVBS/Y/G OUT Standard Definition SDI/CVBS, Y, G output
SD OUT Standard Definition SDI output
SD/CVBS/U/B/YCY OUT Standard Definition SDI/CVBS, U, B, YC-Y output
SD/CVBS/V/R/YCC OUT Standard Definition SDI/CVBS, V, R, YC-C output
HD/SD IN LOOP OUT High Definition/Standard Definition serial digital input reclocked loop-through
HD/SD IN High Definition/Standard Definition serial digital input
Note: The Q-Down183 with seven/eight input loop-throughs requires two RM34 or an RM45
plus RM34 rear module, thus requiring two frame slots compared to the Q-Down123. The
upper RM34 position will supply the six extended loop-though connections.

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2.3 General Purpose Interface (GPI)
Each frame slot has up to six connections ‘a-f’ for GPI control and monitoring. These
connections are available at the rear of the frame on the 26-way D-Type remote connectors.
GPI Low (<1V) High (+5V)
0 ‘a’ No function at present
1 ‘b’ No function at present
2 ‘c’ No function at present
3 ‘d’ No function at present
4 ‘e’ Input missing or not valid Input present
5 ‘f’ No function at present
As supplied, each GPI output has a 270Ω resistor in series with its output. This allows for an
external LED to be driven, connected to a DC voltage of +5V.
Each General Purpose Input (GPI) is fitted with a 10kΩ resistor connected to the internal +5V.
4U frame GPI connections
GPI lines ‘a’ to ‘f’ of each card connect to two of eight rear remote connectors as follows:
Slot no. ‘a’ pin ‘b’ pin ‘c’ pin ‘d’ pin ‘e’ pin ‘f’ pin
1
8 (1)
9 (1)
18 (1)
26 (1)
19 (2)
20 (2)
2
7 (1)
16 (1)
17 (1)
25 (1)
10 (2)
11 (2)
3
8 (3)
9 (3)
18 (3)
26 (3)
19 (4)
20 (4)
4 7 (3) 16 (3) 17 (3) 25 (3) 10 (4) 11 (4)
5
5 (1)
6 (1)
15 (1)
24 (1)
1 (2)
2 (2)
6
4 (1)
14 (1)
13 (1)
23 (1)
3 (2)
4 (2)
7
5 (3)
6 (3)
15 (3)
24 (3)
1 (4)
2 (4)
8 4 (3) 14 (3) 13 (3) 23 (3) 3 (4) 4 (4)
9
3 (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)
Upper

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Slot no. ‘a’ pin ‘b’ pin ‘c’ pin ‘d’ pin ‘e’ pin ‘f’ pin
1
8 (5)
9 (5)
18 (5)
26 (5)
19 (6)
20 (6)
2
7 (5)
16 (5)
17 (5)
25 (5)
10 (6)
11 (6)
3
8 (7)
9 (7)
18 (7)
26 (7)
19 (8)
20 (8)
4
7 (7)
16 (7)
17 (7)
25 (7)
10 (8)
11 (8)
5
5 (5)
6 (5)
15 (5)
24 (5)
1 (6)
2 (6)
6
4 (5)
14 (5)
13 (5)
23 (5)
3 (6)
4 (6)
7
5 (7)
6 (7)
15 (7)
24 (7)
1 (8)
2 (8)
8
4 (7)
14 (7)
13 (7)
23 (7)
3 (8)
4 (8)
9
3 (5)
12 (5)
22 (5)
21 (5)
12 (6)
13 (6)
10
10 (5)
11 (5)
19 (5)
20 (5)
21 (6)
22 (6)
11
3 (7)
12 (7)
22 (7)
21 (7)
12 (8)
13 (8)
12
10 (7)
11 (7)
19 (7)
20 (7)
21 (8)
22 (8)
Table shows pin number (remote number)
Note: Remote 1, Remote 3, Remote 5 and Remote 7 are 26-way high-density D-Type female
sockets. Frame ground is pin 2 and +5V @500mA is pin 1 in each case.
Remote 2, Remote 4, Remote 6 and Remote 8 are 26-way high-density D-Type male plugs
and frame ground is pin 6 in each case and +5V @500mA is pin 15 on Remote 2 and
Remote 6.
The +5V output is protected by self-resetting thermal fuses, which limit the total output
current available from Remotes 1-4 to approximately 1A. Remotes 5-8 are similarly
protected.
2U frame GPI connections
GPI lines ‘a’ to ‘f’ of each card connect to two of four rear remote connectors as follows:
Slot no. ‘a’ pin ‘b’ pin ‘c’ pin ‘d’ pin ‘e’ pin ‘f’ pin
1
8 (1)
9 (1)
18 (1)
26 (1)
19 (2)
20 (2)
2
7 (1)
16 (1)
17 (1)
25 (1)
10 (2)
11 (2)
3
8 (3)
9 (3)
18 (3)
26 (3)
19 (4)
20 (4)
4
7 (3)
16 (3)
17 (3)
25 (3)
10 (4)
11 (4)
5
5 (1)
6 (1)
15 (1)
24 (1)
1 (2)
2 (2)
6
4 (1)
14 (1)
13 (1)
23 (1)
3 (2)
4 (2)
7
5 (3)
6 (3)
15 (3)
24 (3)
1 (4)
2 (4)
8
4 (3)
14 (3)
13 (3)
23 (3)
3 (4)
4 (4)
9
3 (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. 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 in each case and +5V @500mA is pin 15 on Remote 2.
The +5V output is protected by self-resetting thermal fuses, which limit the total output
current available from Remotes 1-4 to approximately 1A.
Lower

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1U frame GPI connections
GPI lines ‘a’ to ‘f’ of each card connect to two rear remote connectors as follows:
Slot no. ‘a’ pin ‘b’ pin ‘c’ pin ‘d’ pin ‘e’ pin ‘f’ pin
1
8 (1)
9 (1)
18 (1)
26 (1)
19 (2)
20 (2)
2
7 (1)
16 (1)
17 (1)
25 (1)
10 (2)
11 (2)
3
5 (1)
6 (1)
15 (1)
24 (1)
1 (2)
2 (2)
4
4 (1)
14 (1)
13 (1)
23 (1)
3 (2)
4 (2)
5
3 (1)
12 (1)
22 (1)
21 (1)
12 (2)
13 (2)
6
10 (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 female socket. Frame ground is pin 2 and +5V
@500mA is pin 1.
Remote 2: 26-way high-density D-Type male plugs and frame ground is pin 6 and +5V
@500mA is pin 15.
Note. The +5V output is protected by self-resetting thermal fuses, which limit the total
output current available from Remotes 1-2 to approximately 1A.
Indigo DT desk top box GPI connections
GPI lines ‘a’ to ‘f’ of each card connect to two rear remote connectors as follows:
Slot no. ‘a’ pin ‘b’ pin ‘c’ pin ‘d’ pin ‘e’ pin ‘f’ pin
1
8 (1)
9 (1)
18 (1)
26 (1)
19 (2)
20 (2)
2
7 (1)
16 (1)
17 (1)
25 (1)
10 (2)
11 (2)
Table shows pin number (remote number)
Note: Remote 1: 26-way high-density D-Type female socket. Frame ground is pin 2 and +5V
@500mA is pin 1.
Remote 2: 26-way high-density D-Type male plugs and frame ground is pin 6 and +5V
@500mA is pin 15.
The +5V output is protected by self-resetting thermal fuses, which limit the total output
current available from Remotes 1-2 to approximately 1A.

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3Card edge operation
3.1 Card edge controls
Q-Down board edge
3.2 Card edge buttons
The two tactile push button switches allow the operator to navigate within the menu structure.
.
Button Function
ARC Aspect ratio
selection and output
format.
Press to change aspect ratio (action on release).
Hold to enable output format selection.
Filter
Format Filter selection and
output format. Press to select filter type.
Press to select output formats (Hold ARC)

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3.3 Reading card edge LEDs
Card edge LEDs may be used in conjunction with status information from any connected
remote status panel display or from Statesman if available.
Refer also to the trouble shooting chapter for more help with solving problems and monitoring
status information.
The following table summarises the card edge LED functions and colours:
Name
LED
Colour
Function when ON
Function when Off
PSU Green Good power supply (PSU) rails One or more of the monitor
supplies is out of specification
ARC
Yellow
Aspect ratio conversion selected
Full screen (anamorphic) selected
HD Yellow Video input standard is HD
(High Definition) Input not present
SD Yellow Video input standard is SD (Standard
Definition)
1
Yellow
Softest filter / CVBS
Hold ARC Select for
output format
2
Yellow
Soft filter / YUV
3
Yellow
Sharp / RGB
4
Yellow
Sharpest / Y/C
Navigating card edge menus
To access the card edge menu system proceed as follows:
•Repeatedly pressing ARC will toggle the aspect ratio in the order between
Letterbox (16:9) centre-cut and Full screen (anamorphic). Note: the change is
actioned on the button release and the aspect ratio is only selective with a High
Definition input.
•Repeatedly press Filter Format to select in turn the vertical filter response.
(softest, soft, sharp, sharpest). Note: the change is actioned on pressing the
button.
•Hold ARC and repeatedly press Filter Format to select in turn the output format
(CVBS, YUV, RGB, Y/C). The LED indication will revert to showing the filter
selection after a short delay from releasing the ARC button.
Note: When a selection has been made release ARC before Filter Format to prevent an unwanted
aspect ratio change. Pressing ARC at any time will - along with changing the aspect ratio -
cause the filter format LEDs to show the current output format for a brief time.

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4Using the front control panel
4.1 Module selected
This operational guide assumes that the panel has been set up according to the panel setup
procedure described in the Crystal Vision control panels manual.
Note: It is ESSENTIAL that the panel setup procedure is followed and any old or unknown
passwords cleared prior to using the panel for the first time.
At power up all eight control panel keys LEDs will illuminate briefly. Once the panel has
completed its power up and configuration sequence the panel will enter Statesman mode and
the message ‘Press Cal to Exit’ will be displayed.
The Crystal Vision control panel start up display
To continue with control panel operation or configuration, press the CAL key once. A second
press of the CAL key will return to Statesman control.
The control panel will display the name of the card that first responds to the polling request
together with its location number.
The location number consists of the frame number plus the card position in the frame.
Navigating the display
The functions assigned to control panel keys are:
•DEVICE – enters Device menu to select a card or show cards available / enters
Panel Setup when held down during power up / shows frame status when
pressed from Statesman mode
•CAL – enters or leaves Statesman mode / enters Panel Diagnostics mode when
held down during power up / updates the display
•Asterisk – enters Board Rename menu from the Device menu
•F1 to F4 – soft keys, function assigned within each menu
•HOME – moves the display to the Home menu

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•ENTER – accept current selection
•Upward arrow – used to move up the menu structure / enter Lock Panel menu
from the Device menu
•Rotary control – shaft encoder used to select options or variable data
Note: Please refer to the Crystal Vision Control Panel manual for details of the Panel Setup, Lock Panel and
Diagnostic menus.
Selecting Q-Down
To select a particular card in a frame, press the DEVICE key to go to the Device menu.
Note:
There may be a delay whilst the frame is interrogated during which time the ‘No cards found’ could be
displayed.
The top line of the display will show ‘Available cards X’, where X is the number of cards that
have responded so far to the polling request.
Control panel showing available cards
Rotate the shaft encoder and the bottom row will display the successfully polled cards by
name and location or slot number.
In the example above, the card displayed is located in the second frame in slot number 1.
When the desired card is selected press the ENTER key to access that card’s Home menu. The
message shows that a Q-Down has been selected.
The Q-Down Home menu
Updating the display
The values displayed on an active front panel are only updated when an adjustment is made
and when changing menu level. If changes occur through the use of card edge controls or
other remote control, the text displayed on the active front panel will not be updated
immediately. If necessary, use the upward arrow to leave and then re-enter a menu to update
the display.

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4.2 The Q-Down active panel menu structure
At any time the main top-level menu (Home) is obtained by pressing the HOME key. From
the Home menu further selections can be made. Active function keys are indicated by
illuminated, integrated LEDs.
The main top-level menus for the Q-Down are obtained by pressing the F1- F4 keys from the
Home menu. Menu keys are illuminated when active and when further menus are available.
•The top-level menus are:
•Arc (aspect ratio) – Press F1
•OP (output format) – Press F2
•VBand (bandwidth filters) – Press F3
•Status – Press F4
When a sub menu has been selected, further options may be obtained by using the Shaft
control to scroll through them. Once the desired option has been located a selection or value
change can be made by either toggling the appropriate function key or by selecting and using
the Shaft control to alter a numerical value. A configuration change or value will be activated
as the Shaft control is rotated or function button is toggled. The variable being adjusted will
appear in brackets. Pressing ENTER will fix the new value.
The following chart shows the available Q-Down menus. The actual menus available may
vary slightly as software is updated.

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The Q-Down menu tree
Note:
Function key LEDs are illuminated when active.
Output aspect ratio
Pressing button F1 from the Home menu will allow the output aspect ratio to be selected.
Note:
Only functional with an HD input.
Aspect ratio menu Description
From the Home menu, press F1 to select the Aspect ratio menu.
Press F2 to select and rotate the shaft control to view the options.
Press ENTER to action a change.

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Analogue video output format
From the Home menu press F2 to make an output format selection.
Output format menu Description
From the Home menu, press F2 to select the output format menu.
Press F2 to select and rotate the shaft control to view the options.
Press ENTER to action a change
Vertical bandwidth filters
From the Home menu press F3 to select the desired vertical filter.
Vertical bandwidth menu Description
From the Home menu, press F3 to select the appropriate vertical
filter.
Press F2 to select and rotate the shaft control to view the options.
Press ENTER to action a change

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The Status menu
From the Home menu press F4 to view the Status menu.
Status menu Description
From the Home menu, press F4 to select the status menu.
Rotate the shaft control to view the status information.
Video input Present, Missing.
The current input video format.
PAL, NTSC, 720p 50, 720p 59.94, 1080i 50, 1080i 59.94.
The processor delay link PL11 is set to apply the required video
delay.
Minimum, Fixed, Frame.
The pedestal link PL10 is set to apply setup to 525-line outputs.
Pedestal On, Pedestal Off.
The betacam link PL9 is set to apply betacam levels to the
component output. Beta Levels, Normal Levels.
Fitted software level.
Electronically stored board serial number.

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5Statesman
The Crystal Vision Statesman PC control software is designed to control a range of Crystal
Vision modules via serial control from a PC. Statesman provides a user friendly means of
configuring and operating Crystal Vision modules with the benefit of “see-at-a-glance” status
monitoring.
The main Statesman application communicates with each module in a frame through a
Statesman capable or active control panel. An active panel or REMIND remote control panel
must be fitted to allow for Statesman control.
5.1 Statesman operation
The initial view will show an Explorer style view of the connected frames and modules.
Double clicking on a module will enable the display of the main application menus.
Statesman main application window
The two large control panes shown in the upper and lower halves of the window may display
different menus for the same card, or controls for different cards. Click on the horizontal
button-bar between the two panes to close the lower pane or drag the button to vary the size of
the panes.
Note: For further details of Statesman configuration and operation please refer to the Statesman
manual.

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5.2 Video properties
The Q-Down has only one tab. This tab which is divided into four group boxes shows the
video properties and board status.
Video properties and status monitoring
Board status
Input presence is shown with a simulated LED which will show green when a valid input is
present and red when the input is missing.
Text is used to show the video input format, processing delay and the onboard link positions.
Analogue output format
The analogue output format is selected by checking the appropriate radio button.
Note:
The final output configuration will depend on the settings of links PL6, 7 and 8.
Output aspect ratio
With a High Definition input a choice of output aspect ratio can be made. The three choices
are: 16:9 letterbox, centre cut and full screen anamorphic. Check the radio button to select.
Vertical bandwidth
When down converting, the vertical bandwidth can be optimised for a given application by
selecting the most appropriate vertical bandwidth filter. There are four filters to select from
ranging from the highest (sharpest) to the lowest (softest). Check the radio button to select the
chosen filter.