Link electronic IEC-787 User Manual

LINK ELECTRONICS, INC.

VERTICAL BLANKING INSERTION

MODEL IEC-787

MADE IN THE USA

700 SERIES

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.

Using front panel switches, any of lines 10 through
21 may be selected for insertion by the IEC-787.
Odd and even fields are handled separately. The
keyer employs the same high performance phase­linear 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
video inputs, but single ended configuration can be
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, the IEC-787 will provide years of reliable
service.

LINK ELECTRONICS, INC.  2137 Rust Avenue  Cape Girardeau, MO 63703-7668

Phone [phone]

 FAX [phone]

MODEL IEC-787 VERTICAL BLANKING INSERTER

SPECIFICATIONS

INPUT:

Program Input: ..........................................................1.0 Vp-p ±3dB

VBI Source Input: ........................................................1.0 Vp-p ±3dB

Program Input Impedance: .................................................... 75Ω ±3dB

VBI Source Input Impedance: ..............................................>20KΩ Looping

Return Loss: .................................................................. >45dB

Configuration: ..............................................................Differential

Common Mode Rejection: ................................................. >50dB @60 Hz

Common Mode Range: .......................................................... 4Vp-p

Maximum DC On Inputs: ........................................................ ±6 VDC

OUTPUT:

Number of Outputs:

Program Output: ................................................................. One

Monitor Output: ..................................................................One

Power-off Bypass:....................................................PGM in to PGM out

Level:.................................................................Unity Gain ±1%

Impedance ..................................................................75Ω 1%

Frequency Response .....................................................±0.5 to 18MHz

.................................................................... -3dB to 30MHz

Line Rate Tilt: ................................................................. <0.1%

Field Rate Tilt:................................................................. <0.1%

DC Offset: ........................................................... <50mV, Clamped

Crosstalk, VBI Source to PGM:.......................................... >60dB @ 3.58MHz

................................................................ >50dB @ 10.0MHz

S/N Ratio: .................................................................... >65dB

Propagation Delay: .............................................................. 25ns

Differential Phase:............................................................... <0.2°

Differential Gain: ................................................................ 0.1%

ENVIRONMENTAL:

Temperature:........................................................0° to 50° C ambient

Humidity:................................................... 10% to 90% non-condensing

Power Consumption:..........................................................8.4 Watts

AC Voltage: ..................................................... 120/240 +10%, 50/60Hz

MECHANICAL:

Height:...................................................................... 1.0 Inch

Width: .................................................................... 5.5 Inches

Depth: ................................................................... 9.25 Inches

LINK ELECTRONICS, INC.

2137 Rust Avenue

Cape Girardeau, MO 63703

Phone: [phone]

FAX: [phone]

IEC-787 REAR PANEL

PRT-700 RACK TRAY / HOLDS 3 IEC-787's

PROFESSIONAL SERIES-­stand-alone television system products--by LINK

IEC-787/110102