Link electronics Closed Caption Series ENC-896 User manual

CLOSED CAPTION SERIES
MADE IN THE USA
LINK ELECTRONICS, INC.
PORTABLE CAPTION ENCODER-DECODER
DIGITAL OR ANALOG
MODEL ENC-896
FEATURES
Encoder
Decoder
Data Recovery
Field 1 or Field 2
Analog Open CC Out
Weather Lift, User Defined
Analog Closed CC Out
Optional Modem
Modem Indication
SDI I/O
Analog Composite I/O
Power-Up Mode, User Defined
Caption & Text
Two Composite Outputs
RS-232C/ 422 Controlled
V-Chip Compatible
Power Down Protect
Auto-Detect, PAL/NTSC
The ENC-896 is both a Closed Caption Encoder
and Decoder capable of inserting and decoding
caption and text data on NTSC, PAL, Analog Y/C,
RGB, YUV, and SDI.
Caption and Text data may be inserted in either
field of the Vertical Blanking Interval. In addition,
data on the incoming video signal may be
recovered from either field of the VBI. This
incoming data may be displayed as Open
Captions, using the built-in Closed Caption
Decoder, and captured by a computer utilizing the
ENC-896's serial data port. Each of these
importantfunctions,Encoding,Decoding,andData
Recovery may be done simultaneously.
The Closed Caption Decoder's functions may be
controlled from the front panel while the Encoder
andDataRecoveryfunctionsarecontrolledviathe
serial data port, on the SDI and analog composite
and the open caption outputs..
Inputsandoutputsareprovidedfor,notonlyNTSC
and PAL, but also Analog Y/C, RGB, YUV, and
SDI.Thepower-loss feature by-passestheanalog
and SDI when AC power to the ENC-896 fails.
In response to the FCC mandated requirements,
captionsshallnotinterferewithemergencycrawls.
The ENC-896 incorporates a weather-lift feature
thatmovesthecaptioningup1 to3lineswhenever
a contact-closure is detected on it ‘s GPI input.
Forremotecaptioningapplications,asecondserial
port is available as a modem input. Both serial
portsmaybeconfiguredforRS-232orRS-422I/O.
Front panel DIP switches are provided to select
the baud rate selections of 1200, 2400, 4800, and
9600 bps.
Modem speeds are 1200 or 2400 baud. The
modem takes priority over the serial port, and
when the modem hangs up, the ENC-896 is
restored to the last mode left by the modem.
Front panel LED's show the unit status and the
presence of serial data. A pair of front panel push-
buttons allow the user to run an encoded test
message or to place the unit in by-pass mode.
TheENC-896isreadyforV-Chiptechnology.LINK
Electronics is incorporating this technology in the
firmware of the ENC-896. The ENC-896 handles
the automatic repetition of the "V-Chip" data and
can interleave it with existing Line 21 Closed
Caption data.
LINKELECTRONICS, INC. 2137 Rust Avenue Cape Girardeau, MO 63703-7668
Phone [phone] FAX [phone]
AC Power Supply
(supplied)

MODEL ENC-896 CAPTION ENCODER/DECODER
DIGITAL AND ANALOG SPECIFICATIONS
ANALOG INPUT:
NTSC/PAL/RGB/YUV/YC:
Inputs: .............................One
NTSC/PAL/G/YLevel:.......1.0Vpp±4dB
RB / UV / C Level: . . . 0.7Vpp (100% Sat.) ±4dB
Impedance: .............. 75Ω, Terminated
Connectors: .....................BNC(x3)
ReturnLoss: ....................... 40dB
Maximum DC on Input: ............ 3.2VDC
Common Mode Range: ............ 6.4Vp-p
SDI INPUT:
Number: ...........................One
Standard: ..........SMPTE259M-C 270Mb/s
Connector: ......................75ΩBNC
Impedance: .....................75Ω±1%
ReturnLoss: .............>18dB to 270MHz
Signal Level: ................ 800mV ±10%
OUTPUTS:
NTSC/PAL/RGB/YUV/YC:
NumberofOutputs:................... Two
NTSC/PAL/G/YLevel:........1Vp-p±1dB
RB / UV / C Level: . . . 0.7Vpp (100% Sat.) ±1dB
InsertionGain:...................... Unity
Impedance: .........................75Ω
Connectors: ........................ BNC
Bandwidth: .......................26MHz
Tilt: ............ <1%ref.30Hzsquare wave
Hum: .....................>70dB, 1.0Vp-p
Overshoot & Ringing: .................<1%
Propagation Delay: .............. 30nS ±5%
S/NRatio: ........................ >60dB
DifferentialGain ................... <0.1%
DifferentialPhase ................... <0.1°
DC Offset .......................<0.2Vdc
SDI OUTPUT:
Number: ........................ Two(2)
Standard: ..........SMPTE259M-C 270Mb/s
Connector: ......................75ΩBNC
Impedance: .....................75Ω±1%
ReturnLoss: ............ >18dB to 270 MHz
Signal Level: ................ 800mV ±10%
DECODER:
Output: ............................Two
Level:.......................1.0Vpp±1dB
Character Video: ...................90IRE
Character Background: ..............10IRE
Frequency Response: ........ -3dBto26MHz
DifferentialGain ................... <0.1%
DifferentialPhase ................... <0.1°
DC Offset .......................<0.2Vdc
LineRateTilt: ..................... <0.1%
FieldRateTilt:..................... <0.1%
WEATHER-LIFT (GPI) INPUT:
Open Circuit Voltage: ............. 5.0VDC
MaximumSourceCurrent: ........... 0.5mA
Maximum Overload Input ........+12Vto-7V
FRONT PANEL CONTROLS:
ACPower:........................ On/Off
By-Pass.............Push/Push,Maintained
Test: ...............Push/Push,Momentary
LED's: ....................Video Presence
Modem Status: RI,OH,CD, Serial Data, Pedestal
LCD DISPLAY:
Encoding: ................ Field1orField2
Decoding: ............CC1-4,T1-T4,&XDS
Standard: ..... NTSCorPAL,AnalogorDigital
Baud Rate: ........1200, 2400, 4800 or 9600
REAR PANEL:
Modem Connection: .... 9PinDwiredasDTE
Computer Connection: . . 9 Pin D wired as DCE
ENVIRONMENTAL:
Temperature:........... 0°to50°C(ambient)
Humidity: ....... 10%to90%non-condensing
Power:......................... 24Watts
AC Input: .......120/240VAC (±10%) 50/60Hz
MECHANICAL:
Height:....................... 2.25Inches
Width: ....................... 14.5Inches
Depth: ........................ 10Inches
Weight: .........................3.5Lbs.
LINKELECTRONICS, INC. 2137 Rust Avenue Cape Girardeau, MO 63703-7668
Phone [phone] FAX [phone]