DVI Video with Stereo Audio (Supporting Single-Link DVI) Models 7500 & 7501 USER’S MANUAL WORLD HEADQUARTERS 55 Cabot Court Hauppauge, N.Y. 11788 USA Tel: (631) 273-0404 Fax: (631) 273-1638 www.commspecial.com Email: info@commspecial.com Communications Specialties Pte Ltd 100 Beach Road #22-09 Shaw Tower Singapore 189702 Tel: +65 6391 8790 Fax: +65 6396 0138 Email: csiasia@commspecial.com P/N: 126184 Rev.
CONTENTS General Information .................................................... 3 Introduction ............................................................ 3 Technical Specifications .......................................... 3 Installation Instructions .............................................. 5 Installation Procedure ............................................. 5 System Connections ............................................... 6 Alarm Switch Settings ............................................
GENERAL INFORMATION Introduction The Pure Digital Fiberlink® 7500 Series is a transmitter/receiver pair that transmits a single channel of DVI video (up to WUXGA) and two audio channels over one single mode fiber. It is available as a freestanding box unit or as a card version for use in the rackmountable 6000A card cage. The system’s all digital encoding delivers noise-free transmissions that retain all of their initial parameters, regardless of fiber optic cable attenuation.
Audio: Number of Audio Channels ..... 2, unbalanced Frequency Response ................. +0/-0.5 dB, 20 Hz to 20 kHz Bits-per-Sample/Sampling Rate ... 24 bits; >48kHz Maximum Audio Level .............. +10 dBu SNR (A-Weighted) ..................... 100 dB THD+N ....................................... 0.001%, 20 Hz - 20 kHz Channel Phase Differential ........ +0.1o Crosstalk ..................................... 100 dB (1 kHz) Input Impedance ......................... >24 k Ohms Output Impedance ............
MAINTENANCE AND REPAIRS The Pure Digital Fiberlink® 7500 Series transmission system has been manufactured using the latest semiconductor devices and techniques that electronic technology has to offer. It has been designed for long, reliable and trouble-free service and are not normally field repairable. Should difficulty be encountered, Communications Specialties maintains a complete service facility to render accurate, timely and reliable service of all products.
. Connect the audio input signals to the transmitter stereo jack and the audio output to the receiver stereo jack. 7. Apply power to both the Pure Digital Fiberlink units and the PC or video source. For box versions using DC power connections, refer to Figure 1. 8. When power is applied, the green POWER LED will light, indicating the presence of operating power. The VIDEO LED will give an indication as described on page 7. 9. The green AUDIO LED will give an indication as stated on page 7. 10.
Lock Bandwidth (BW) Switches 1 and 2 control the lock bandwidth: Wide ide Medium dium Narrow row Very Narrow BW EQ BW EQ BW EQ BW EQ 1 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4 Input Equalization (EQ) Switches 3 and 4 control the input equalization: Short Medium Long Very Long 1 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4 BW EQ BW EQ BW EQ BW EQ Video Pin Out: 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Transmitter N/C Green (-) Green (+) Green Shield N/C N/C +5V Power GND (for +5V) Hot Plug Detect Blue
Alarm Switch Settings (Receiver; Card Version Only): Switch Position 1 2 Alarm Indication Loss of Signal Loss of Video On Off Enabled Disabled Enabled Disabled Note: “Loss of Video” refers to loss of valid DVI video stream. “Loss of Signal” refers to the absence of an optical signal. Indicator LEDs and Alarm Circuitry: The stand-alone box versions of the Pure Digital Fiberlink 7500 and 7501 units have three integral indicator LEDs that are used to monitor the state of the units.
Alarm Switch Settings (Receiver; Card Version Only): Switch Position 1 2 Alarm Indication Loss of Signal Loss of Video On Off Enabled Disabled Enabled Disabled Note: “Loss of Video” refers to loss of valid DVI video stream. “Loss of Signal” refers to the absence of an optical signal. Indicator LEDs and Alarm Circuitry: The stand-alone box versions of the Pure Digital Fiberlink 7500 and 7501 units have three integral indicator LEDs that are used to monitor the state of the units.
Lock Bandwidth (BW) Switches 1 and 2 control the lock bandwidth: Wide ide Medium dium Narrow row Very Narrow BW EQ BW EQ BW EQ BW EQ 1 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4 Input Equalization (EQ) Switches 3 and 4 control the input equalization: Short Medium Long Very Long 1 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4 BW EQ BW EQ BW EQ BW EQ Video Pin Out: 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Transmitter N/C Green (-) Green (+) Green Shield N/C N/C +5V Power GND (for +5V) Hot Plug Detect Blue
6. Connect the audio input signals to the transmitter stereo jack and the audio output to the receiver stereo jack. 7. Apply power to both the Pure Digital Fiberlink units and the PC or video source. For box versions using DC power connections, refer to Figure 1. 8. When power is applied, the green POWER LED will light, indicating the presence of operating power. The VIDEO LED will give an indication as described on page 7. 9. The green AUDIO LED will give an indication as stated on page 7. 10.
MAINTENANCE AND REPAIRS The Pure Digital Fiberlink® 7500 Series transmission system has been manufactured using the latest semiconductor devices and techniques that electronic technology has to offer. It has been designed for long, reliable and trouble-free service and are not normally field repairable. Should difficulty be encountered, Communications Specialties maintains a complete service facility to render accurate, timely and reliable service of all products.
Audio: Number of Audio Channels ..... 2, unbalanced Frequency Response ................. +0/-0.5 dB, 20 Hz to 20 kHz Bits-per-Sample/Sampling Rate ... 24 bits; >48kHz Maximum Audio Level .............. +10 dBu SNR (A-Weighted) ..................... 100 dB THD+N ....................................... 0.001%, 20 Hz - 20 kHz Channel Phase Differential ........ +0.1o Crosstalk ..................................... 100 dB (1 kHz) Input Impedance ......................... >24 k Ohms Output Impedance ............
