Link electronics Two Field Closed Caption Decoder IEC-786 User manual

CLOSED CAPTION SERIES
LINK ELECTRONICS, INC.
TWO FIELD CLOSED CAPTION DECODER
MODEL IEC-786
FEATURES
Field 1 & Field 2
Captions
Text
XDS
The IEC-786 is a high performance Closed Cap-
tion Decoder for the NTSC system. It is capable of
processing and displaying all standard line 21
closedcaptionformattransmissions.Thisincludes
the codes specified by the FCC Report and Order
on General Docket No. 91-1 and EIA-608 recom-
mended practices for Captions, Text and XDS in
field 2.
Nine standard data channels are supported by the
IEC-786: Caption channels 1 through 4 (CC1-
CC4), Text modes 1 through 4 (T1 through T4),
and Extended Data Services (XDS). The various
operating modes are selectable from four front
panel switches. Designed with the professional
user in mind, the IEC-786 processes composite
baseband video.
Baseband Video Input
Baseband Video Output
Differential Input
Rack Mountable (Optional Tray)
Itfeaturesahigh impedance looping input and two
composite video outputs. A complementary differ-
ential input amplifier assures high common mode
rejection while its phase-linear keyer cleanly
inserts decoded characters into the video image.
Differential gain and phase are well within 0.1%
and 0.1° respectively.
Packaged in LINK's compact 700 Series chassis,
theIEC-786is both rugged and reliable. If desired,
it may be rack mounted along side two other 700
Series units of any mix.
In addition, the IEC-786 is backed by a standard
10-yearwarranty.Highperformance,flexibility,and
economy are equally represented in the IEC-786
Closed Caption Decoder.
LINKELECTRONICS, INC. 2137 Rust Avenue Cape Girardeau, MO 63703-7668
Phone [phone] FAX [phone]
MADE IN THE USA

PRT-700 RACK TRAY
IEC-786 REAR PANEL
IEC-786/101802
MODEL IEC-786 CLOSED CAPTION DECODER
SPECIFICATIONS
INPUT:
Video Level: .............................................................1.0Vpp±6dB
Impedance: ............................................................>20KΩLooping
Connector: ..................................................................... BNC
Maximum DC on Inputs: ....................................................... ±6.0VDC
Common Mode Range: ........................................................... 5Vpp
CMRR@60Hz: ................................................................ >50dB
OUTPUTS:
Number: .......................................................................Two
Connector: ..................................................................... BNC
Level:.....................................................................UnityGain
Character Video: .......................................................... 90IREUnits
Character Background: ..................................................... 10IREUnits
Impedance: .................................................................75Ω±1%
Frequency Response: .................................................. ±0.1dBat15MHz
....................................................................-0.5dBat17MHz
.................................................................. -1.0dBat18.5MHz
....................................................................-3.0dBat26MHz
DifferentialGain: ............................................................... 0.10%
DifferentialPhase:............................................................... 0.10°
Propagation Delay: .............................................................. 16nS
Hum and Noise: ........................................................>55dB to 5MHz
................................................................. >40dB above 5MHz
DC Offset: ............................................................ <2mV,Clamped
LineRateTilt: ................................................................. <0.1%
FieldRateTilt:................................................................. <0.1%
ENVIRONMENTAL:
Temperature:........................................................0°to50°Cambient
Humidity: ..................................................... 10%/90%non-condensing
Power:........................................................................9VAR
AC Voltage: ................................................. 120/240 VAC±10%, 50/60Hz
MECHANICAL:
Height:.................................................................... 1.0inches
Width: .................................................................... 5.5inches
Depth: ................................................................... 9.25inches
Weight: ................................................................... 2lbs.,9oz.
LINKELECTRONICS, INC. 2137 Rust Avenue Cape Girardeau, MO 63703-7668
Phone [phone] FAX [phone]