Link electronics Component Analog to NTSC Encoding IEC-843 User manual

800 SERIES
MODEL VERSIONS
IEC-843, RGB to NTSC or YC
IEC-843A, RGB to NTSC & YC
IEC-843B, RGB to NTSC & YC
Plus YC in & NTSC Out
IEC-843C, YUV to NTSC or YC
MADE IN THE USA
LINK ELECTRONICS, INC.
COMPONENT ANALOG to NTSC ENCODING
MODEL IEC-843
FEATURES
PC Lock
Gen-lock
RGB to NTSC
YUV to NTSC, Option
"Y" and "C" Outputs
360° Subcarrier Phase
Internal RS-170A Sync Gen.
The IEC-843 is a RGB to NTSC encoder with RS-
170A sync generator. The unit also accepts YUV
(BETA or MII) inputs as model IEC-843C. Other
versions are available. The system is a self
contained unit measuring only 1 3/4 inches high
and 8 inches deep. It can be mounted in a
standard 19 inch equipment rack.
The required signal input is RGB, or YUV with or
without sync on the green channel. An external
composite video or black burst input is required to
gen-lock to an external source. The internal sync
generator provides blanking and burst to the
encoder section.
The IEC-843 provides all sync generator pulse
outputsthatconformtotheRS-170Aspecification.
The propagation delay of the encoded signal is
250nS. An internal set of jumpers provide "Y" and
"C"outputsforrecordingonS/VHStaperecorders.
The IEC-843A provides NTSC and YC outputs
simultaneously. The various configurations of the
unit are explained above.
Frontpanelcontrolsare:ACON/OFF,normallock,
internal lock, PC lock, internal frequency, SC
phaseand horizontalphase. Theunit operateson
115 VAC and dissipates approximately 15 watts.
LINKELECTRONICS, INC. 2137 Rust Avenue Cape Girardeau, MO 63703-7668
Phone [phone] FAX [phone]

MODEL IEC-843, COMPONENT ANALOG TO NTSC ENCODER
ENCODER INPUTS:
Inputs: ..................................................................RGB
Optional Inputs: ........................................................... YUV
Levels:...................................................0.7Vp-pnon-composite
Impedance: .................................................. 47KΩ±5% looping
Connectors: .............................................................. BNC
ENCODER OUTPUTS:
Number: .......................................TwoNTSC,1.0Vp-p,orone YC pair
Impedance: ..........................................................75Ω, ±1%
Connectors: .............................................................. BNC
PERFORMANCE:
VerticalTilt: .............................................................. <1%
Propagation Delay: .......................................................250nS
YtoCTiming: ...........................................................±40nS
Frequency Response: ............................................ -3dB@7.5MHz
GENERATOR OUTPUTS & PERFORMANCE:
Outputs:
SYNC: ..............................................................One(1)
BLANKING: ..........................................................One(1)
H.DRIVE: ...........................................................One(1)
V.DRIVE: ............................................................One(1)
BURSTFLAG: ........................................................ One(1)
Levels: .....................................................4.0Vp-p±5%fixed
Impedance: .........................................75Ω±1%, source terminated
Widths:................................................ NormFCC,EIA&NTSC
Tilt & Overshoot: ........................................................ <1%
Jitter: ................................................... <5nS,referencetoSC
RiseTime: ......................................................140nS ±20nS
SUBCARRIER:
Outputs:...............................................................One(1)
Frequency: ................................................ 3.579545 MHZ ± 1 Hz
Output Impedance: .................................................... 75Ω±1%
OutputLevel:.................................................. 2.0Vp-padj.±20%
HarmonicDistortion: ............................................. >-35dB @ 2Vp-p
GEN-LOCK MODE
Video Level: ..................................................... .1.0Vp-p±6dB
Video Input Impedance: ................................................>20Kloop
PulseJitter: ................................................ <5nS,reftoinput sync
SubcarrierJitter: ......................................................... <0.5°
Color Lock Range: ....................................................... ±4Hz
FRONT PANEL CONTROLS:
SubcarrierPhase: ......................................................... 360°
HorizontalPhase: ....................................................... ±4.5µS
Crystal Frequency: ...........................................±3Hzat3.57945MHz
Switch:.....................................SelectsGen-lock,InternallockorPC-lock
ENVIRONMENTAL:
Temperature:....................................................0°to50°C,Amb
POWER:
Input: ............................................................ 115/230 VAC
Power:...............................................................15Watts
MECHANICAL:
Height:............................................................ 13/4Inches
Depth: ............................................................... 8Inches
Width: .............................................................. 19Inches
Weight: ...........................................................4.75Pounds
LINKELECTRONICS, INC. 2137 Rust Avenue Cape Girardeau, MO 63703-7668
Phone [phone] FAX [phone]