BKPF-L642 (BKPFL642)

4:2:2 to NTSC/PAL Encoder Board

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The BKPF-L642 is an encoder board that converts a component 4:2:2 serial digital signal into an NTSC/PAL composite analog signal. It features 10-bit processing, 2x over sampling and a line synchronizer.
In conjunction with the BKPF-L641 4:2:2 to NTSC/PAL decorder board, the color frame ID extractor function avoids the reverse color framing that may be generated by the encode/decode chain. It maintains ancillary data within the VBI. An internal test signal generator is provided for maintenance purposes.
The BKPF-L642 uses 10-bit conversion for quality-critical application such as distribution or on-air transmission applications.
The BKPF-L Series function boards install in the PFV-L Series Interface Units in any combination with other BKPF-L Series function boards.


High performance NTSC/PAL encoder
- 12-bit internal processing
- Supports SMPTE259M-C
- One equalized input with active loop-through output
- Four distribution outputs
- Black burst reference input with passive loop-through output
NTSC/PAL selectable
Built-in line synchronizer
- H phase adjustment
Color frame ID extraction
Maintains the content of the VBI to support Closed Caption
EDH monitoring
Built-in test signal generator


Generic Specifications
Serial digital input: SDI IN connector (BNC type) (1), 0.8 Vp-p, 75 Ohm, 4:2:2 component serial digital signal, conforming to SMPTE-259M-C, 270 Mb/s.

Reference input: REF IN connector (BNC type) (1), 0.3 Vp-p ±10%, 75 Ohm, black burst signal

Digital input return loss: 15 dB or more (5 MHz to 270 MHz)

Serial digital output: Active loop-through output connector (BNC type) (1), 0.8 Vp-p, 75 Ohm, 525/625 component serial digital signal, conforming to SMPTE-259M-C, 270 Mb/s

Analog video output: ANALOG OUT connectors (BNC type) (4), NTSC/PAL composite analog video signal, 1.0 Vp-p, 75 Ohm

Reference output: Passive loop-through output connector (BNC type) (1), 0.3 Vp-p ±10%, 75 Ohm, black burst signal

Digital output return loss: 15 dB or more (5 MHz to 270 MHz)

Cable length: 200 m max. (with Belden 8281, Fujikura 5C2V or equivalent coaxial cable)

Channel coding: Scrambled NRZI
Video characteristics
Sampling frequency: 27 MHz

Signal: 10 bits

Internal processing: 12 bits

Band width: 5.75 MHz

DG: 1% or less

DP: Within 1 °

K factor (2T pulse): 1% or less

Signal-to-noise ratio: 60 dB or more (using Flat Field)

Y/C delay: ±10 ns or less

Processing delay: 4 µs (NTSC)/7.5 µs (PAL)

Phase adjustment range: Line: -2 H, -1 H, ±0 H, +1 H
INPUT Lock mode: 0.1 to 8.5 µs (NTSC), 0.1 to 7.0 µs (PAL)
External REF mode: -4.2 to +4.2 µs (35 ns steps NTSC), -3.5 to +3.5 µs (28 ns steps PAL),

Test signal: 75% color bars with 100% white
Power requirement: +5 V DC: 1.2 A (supplied from PFV-L Series Interface Unit)

Operating temperature: +5 °C to +40 °C (+41 °F to +104 °F)

Storage temperature: -20 °C to +60 °C (-4 °F to +140 °F)

Operating humidity: 10% to 90% (no condensation)

: Board 77 x 267 mm (3 1/8 x 10 3/4 inches) (h/w)
Connector panel 33 x 85 mm (1 5/16 x 3 3/8 inches) (w/h)

: Board Approx. 150 g (5 oz)
Connector panel Approx. 100 g (4 oz)
Supplied Accessories
Installation Guide (1)
Installation Manual (1)

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