MECHANICAL
Standard Crystal Vision module 266mm x 100mm
Weight: 185g
Power consumption: 4 Watts

VIDEO INPUT
One HD or SD input with reclocking
270Mb/s or 1.5Gb/s serial compliant to EBU 3267-E, SMPTE 259M and SMPTE 292M
HD cable equalisation up to 140m with Belden 1694A or equivalent (approx. 100m with Belden 8281). SD cable equalisation >250m Belden 8281 or equivalent
The video formats supported are 625, 525, 720p50, 720p59.94, 720p60, 1035i59.94, 1035i60, 1080i50, 1080i59.94 and 1080i60
Input return loss: -15dB for 50MHz to 1.5GHz
Auto 50/59.94/60Hz and video format selection
May contain embedded audio when input and output frequencies are locked

VIDEO OUTPUTS
Two HD or SD retimed outputs using RM34 frame rear module
Two equalised and reclocked input loop-throughs
Serial output: 270Mb/s or 1.5Gb/s serial compliant to EBU 3267-E, SMPTE 259M and SMPTE 292M. Output follows the input format

ANALOGUE REFERENCE
Tri-level syncs or analogue Black and Burst or video
HD or SD source can use either type of reference
When cross-locking it is necessary for both the video input and reference to share the same frame rate
Amplitude of syncs 150mV to 600mV
Link on PCB selects 75 ohm termination or high impedance

TIMING ADJUSTMENTS
In synchroniser mode SYN HD-AFD takes its timing from the analogue external reference and will automatically synchronise sources between 0 and one frame. Should the reference be removed it will free run at the previous received line rate
In delay mode timing is derived from the HD or SD input
The timing can be fully adjusted using horizontal and vertical settings. Increasing the vertical setting will delay the output relative to the reference in increments of one line. Increasing the horizontal setting will increase this delay in increments of approx. 74ns for SD and 13.5ns for HD. The maximum setting of both controls will provide a delay of one frame plus approx. 2us
SYN HD-AFD synchronises at three separate points within each field or frame: at the start of the nominal field/frame, just after the switching point and before the start of the active field/frame

DELAY THROUGH BOARD
2us min - 1 frame plus appox. 2us max

FREEZE FUNCTIONS
Manual freeze allows the SYN HD-AFD to be used as a simple still store. Selecting single field output can counteract any flicker caused by the interlacing of the two fields on a picture with significant movement. Either field can be selected. The single field is output only when the picture is frozen. Automatic freeze is available when input fails through loss of signal. The user can specify to show the whole frame in which failure happened, field 1 or 2 of the last frame or alternatively a black or blue screen (with or without an initial delay)

ACTIVE FORMAT DESCRIPTION
SYN HD-AFD will insert SMPTE 2016 picture aspect ratio data into the output video to allow downstream equipment to automatically select the correct aspect ratio
One of 16 AFD codes can be embedded, with the code describing which areas of the screen contain a picture and which areas are black 'padding'
The sixteen codes are
0: Undefined
1: Reserved
2: 16:9 top
3: 14:9 top
4: >16:9
5: Reserved
6: Reserved
7: Reserved
8: Full Frame (as coded frame)
9: 4:3 image
10: 16:9 image
11: 14:9 image centred
12: Reserved for future use
13: 4:3 with shoot and protect 14:9 centre
14: 16:9 with shoot and protect 14:9 centre
15: 16:9 with shoot and protect 4:3 centre
The AFD code is contained in an ANC data packet, which is carried in the active portion of a specified line in the vertical blanking
When inserting SMPTE 2016 data the inserter will blank any incoming SMPTE 2016 data

EDH AND CRC
EDH/CRC insertion to SMPTE RP165 and SMPTE 292M

AUDIO FOLLOW OUTPUT
TTL output on GPI
Pulse length shows delay through store
Can provide control signal for audio delay systems

GPI INPUT LEVELS
Active: pull to ground, pulled up to +5V through 10 kohm

GPI OUTPUT LEVELS
Electrically: Open collector transistors 30V, 270 ohm current limit resistors. Pulled up to +5V through 6800 ohm

GPI INPUTS
Four GPI inputs can recall one of 16 presets. GPIs can be used to control the insertion of any of the 16 AFD codes by recalling a preset

GPI OUTPUTS
Two GPI outputs
Audio follow pulse
Reference disconnected or missing

LED INDICATION OF:
SD/HD input or input not present
Power supplies okay
External reference present
Short delay

LOCAL CONTROL
Intuitive board edge interface with two select buttons, shaft encoder and ten character alphanumeric display

REMOTE CONTROL
RS422/485
19200 baud, 8 bits, 1 stop no parity
Control from frame active panel and remote panel
Statesman allows control from any PC on a network
SNMP monitoring and control available as a frame option