HDP4 HD-SDI/SDI To DVI-D and Audio Converter 4-Output User Manual June 30, 2005 P/N 101661
Trademarks AJA, Io, and Kona are trademarks of AJA Video, Inc. DVI is a registered trademark of DDWG. E-DDC and E-EDID are registered trademarks of VESA. All other trademarks are the property of their respective holders. Notice Copyright © 2005 AJA Video, Inc. All rights reserved. All information in this manual is subject to change without notice.
AJA HDP4 HD-SDI/SDI to DVI-D and Audio Converter User Manual — Introduction Introduction The HDP4 is similar to the HDP, converting HD-SDI/SDI to DVI-D for LCD or Plasma monitors. Where the HDP outputs 1 DVI-D output with audio, the HDP4 provides 4 sets of DVI-D and audio outputs. Each output is separately reclocked and buffered. Using a very high quality scaling engine, the HDP4 automatically sizes 4:3 or 16:9 inputs to many DVI-D monitors.
About Monitor Compatibility The HDP4 is designed to work with most DVI-D monitors. The HDP4 uses the industry standard EDID communication protocol (within the DVI link) to communicate with the monitor, and then adjust the DIP’s internal scaling engine to scale the input video to the native resolution of the monitor. However, due to the hundreds of variations of DVI formats currently in use, proper operation with all monitors cannot be guaranteed.
AJA HDP4 HD-SDI/SDI to DVI-D and Audio Converter User Manual — Video Scaling Video Scaling As shown in the graphic below, the HDP4 will scale the input video to the best fit for a given monitor and video input. In cases where the input video and the monitor are already the same or similar, the HDP4 automatically turns off scaling. For example, a 1920 x1080 video and a 1920 x1200 monitor will not be scaled.
Vertical Locking Depending on the input frame rate and the capabilities of the monitor in use, the HDP4 will provide a vertically locked signal to the monitor. Because most DVI monitors have their own internal scaling, the internal scaler of the monitor may or may not lock vertically to the HDP4 output. The recommended monitor list shown below lists only monitors which have been tested for proper vertical lock.
AJA HDP4 HD-SDI/SDI to DVI-D and Audio Converter User Manual — I/O Connections I/O Connections Output DVI Connectors (4) 2 Channel Unbalanced Analog Audio (4 Sets of RCA Jacks) 1 SD/HD-SDI Loop Output 2 SD/HD-SDI Loop Output 1 Configuration DIP switch SD/HD-SDI Input BNC HDP4 Converter Universal 100/240 VAC Power Input 7
User Controls The user interface for the HDP4 is a 4-switch DIP accessible through a cut-out in the outside of the case (same side as the AC power connector). Use the DIP switches to enable/disable and configure scaling modes, and assign which AES audio channels are HDP4 DIP Switches disembedded. The exact function of each DIP switch and what it controls is described on the following pages.
AJA HDP4 HD-SDI/SDI to DVI-D and Audio Converter User Manual — Installation Installation Typically, HDP4 installation consists of the following steps: 1. 2. 3. 4. 5. Ensure the HDP4 is disconnected from power. Configure the DIP switch for the desired configuration and video scaling. Connect video equipment to the convertor BNCs and DVI connector. Connect audio equipment to RCA connectors (optional) Apply AC power to the converter.
