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User's Manual
for
BT656Pro SDI Mod. Kit
PMS Video Ltd.
Doc No: PMS-UM0006 Rev. 1.0
Last update: 18/06/2004
1. Warning:
It is assumed that you have already fully understood the pin assignments of the MPEG decoder in your DVD
player / set-top boxand have the skill to do the modification. PMS Video Ltd. is not responsible for any
damage caused during the modification.
2. Introduction:
The BT656Pro SDI Mod. Kit converts the standard parallel BT656 digital video signal generated by the
MPEG decoders of DVD players or set-top boxes to SDI (Serial Digital Interface) signal for video signal
transmission in order to avoid unnecessary digital-to-analog and analog-to-digital conversions which will
cause video quality loss. SDI can keep video signal digital, from the source to the video processor / scaler
then to the digital displays, i.e. the highest video picture quality.
2. Features:
Standard compliant SDI output, compatible with major SDI capture devices
Supports major DVD players and set-top boxes with ITU BT656 video output
Provides 1 SDI output
One BNC connector is pre-installed for easy installation
Provides fully digital output directly from a MPEG decoder to SDI capture card/video processor
Status LED turns on when 27MHz clock signal is detected
30AWG wire wrap wires and power cableare included to facilitate the installation
3. System Requirements:
-The video signal from the MPEG decoder must be ITU BT656 compliant (8-bit video data with embedded
sync + 27MHz video clock).
-DC 5V (usually provided by the DVD player or the set-top box) is required to power the kit.
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4. Specifications:
-Dimensions (H x W x D): 1.5cm x 5cm x 4cm, 1.5cm x 7cm x 4cm including the BNC connectors
-Power consumption: 0.3W
-One Serial Digital Interface (SDI) Output
-One BT656 Input LED Indicator
-PIN assignments:
- LED (D2) lights up when 27MHz
clock signal is detected.
- D0 & D1 are for 10-bits SDI
applications, they are not used for
DVD/set top box SDI modification.
- 8bits (D2-D9).
- D2 is the less significant bit.
- D9 is the most significant bit.
- Clock
- Ground
(Twisted clock and ground cable may
lower the noise of the clock signal)
- +5 V.
- Ground
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6. Installation:
1. Connect all D2-D9 pins to the appropriate MPEG decoder output pins of your DVD player or set-top
box. The D0 and D1 pins are not used because the digital video output of the MPEG decoders in
the DVD players and set-top boxes is 8-bit data only.
2. Connect the 5 volt and ground to the appropriate location on the circuit board of the DVD player or
set-top box.
7. Finish:
1. After the modification, power up the DVD player or set-top box and the LED (D2) on the kit should
light up indicating that it is receiving a 27MHz clock signal from the MPEG decoder of the DVD
player or set-top box.
2. Connect BNC cables from the SDI output of this Mod.Kit to your SDI capture device.
Example: An SDI Mod. Kit installed on a Panasonic RP82 DVD player is shown in the following picture.
Example: the pin assignment of RP82's MPEG2 decoder
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