Link electronics Vertical Blanking Insertion IEC-787 User manual

700 SERIES
LINK ELECTRONICS, INC.
VERTICAL BLANKING INSERTION
MODEL IEC-787
FEATURES
VBI Insertion
Field 1 & Field 2 Process
Line 10 thru 21
Recover Lost Captions
The LINK model IEC-787 is a video inserter that
provides an economical way to recover signals in
the vertical blanking interval that may be lost
during video processing such as video
compression or overlay and comb filtering. This
would include Closed Caption data on line 21,
Ghost Cancellation Reference signal on line 19
and other signals in the vertical interval.
Usingfrontpanelswitches,any of lines 10 through
21 may be selected for insertion by the IEC-787.
Odd and even fields are handled separately. The
keyeremploysthesamehighperformancephase-
linear circuit used by LINK Closed Caption
equipment to provide clean insertion, completely
free of artifacts. Overall video handling is
outstanding as well.
Differential input configuration is standard on both
videoinputs,butsingleendedconfigurationcanbe
selected by an internal jumper.
A switchable Monitor output allows the user to
view either of the video inputs ahead of the keyer.
For system timing, a front panel calibrate switch
will cause the unit to alternate between inputs at a
field rate. If no input is connected to the VBI
Source Input BNC, the IEC-787 may be used to
simply pass or delete selected lines in the VBI of
the program video.
Packaged in LlNK's attractive and rugged 700
series chassis, and covered by a ten-year
warranty,theIEC-787willprovideyearsofreliable
service.
LINKELECTRONICS, INC. 2137 Rust Avenue Cape Girardeau, MO 63703-7668
Phone [phone] FAX [phone]
MADE IN THE USA

PRT-700 RACK TRAY / HOLDS 3 IEC-787's
IEC-787/110102
MODEL IEC-787 VERTICAL BLANKING INSERTER
SPECIFICATIONS
INPUT:
Program Input: ..........................................................1.0Vp-p±3dB
VBI Source Input: ........................................................1.0Vp-p±3dB
Program Input Impedance: .................................................... 75Ω±3dB
VBI Source Input Impedance: ..............................................>20KΩLooping
ReturnLoss: .................................................................. >45dB
Configuration: ..............................................................Differential
Common Mode Rejection: ................................................. >50dB @60 Hz
Common Mode Range: .......................................................... 4Vp-p
Maximum DC On Inputs: ........................................................ ±6VDC
OUTPUT:
Number of Outputs:
ProgramOutput: ................................................................. One
MonitorOutput: .................................................................. One
Power-offBypass:....................................................PGMintoPGMout
Level:.................................................................UnityGain±1%
Impedance ..................................................................75Ω1%
Frequency Response .....................................................±0.5to18MHz
.................................................................... -3dBto30MHz
LineRateTilt: ................................................................. <0.1%
FieldRateTilt:................................................................. <0.1%
DC Offset: ........................................................... <50mV,Clamped
Crosstalk,VBISourcetoPGM:.......................................... >60dB @ 3.58MHz
................................................................ >50dB @ 10.0MHz
S/NRatio: .................................................................... >65dB
Propagation Delay: .............................................................. 25ns
DifferentialPhase:............................................................... <0.2°
DifferentialGain: ................................................................ 0.1%
ENVIRONMENTAL:
Temperature:........................................................0°to50°Cambient
Humidity:................................................... 10%to90%non-condensing
PowerConsumption:..........................................................8.4Watts
AC Voltage: ..................................................... 120/240 +10%, 50/60Hz
MECHANICAL:
Height:......................................................................1.0Inch
Width: .................................................................... 5.5Inches
Depth: ................................................................... 9.25Inches
LINKELECTRONICS, INC.
2137 Rust Avenue
Cape Girardeau, MO 63703
Phone: [phone]
FAX: [phone]
PROFESSIONAL SERIES--
stand-alone television system products--by LINK
IEC-787 REAR PANEL