Table of Contents
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1.
OVERVIEW......................................................................................................................................... 1
2.
INSTALLATION.................................................................................................................................. 2
3.
SPECIFICATIONS.............................................................................................................................. 3
3.1. ANALOG VIDEO INPUT............................................................................................................ 3
3.2. ANALOG VIDEO OUTPUTS ..................................................................................................... 3
3.3. ELECTRICAL ............................................................................................................................ 4
3.4. PHYSICAL ................................................................................................................................. 4
4.
STATUS LEDS ................................................................................................................................... 5
5.
CIRCUIT DESCRIPTION.................................................................................................................... 6
6.
JUMPERS AND USER ADJUSTMENTS ........................................................................................... 7
BY THE GLOBAL FRAME STATUS......................................................................................... 7
6.2. SELECTING THE INPUT AC/DC COUPLING .......................................................................... 7
6.3. DC RESTORING (CLAMP) OPERATION ................................................................................. 8
6.4. GAIN ADJUSTMENT................................................................................................................. 8
6.5. CABLE EQUALIZATION OPERATION .................................................................................... 9
6.6. LOW PASS FILTER SELECTION............................................................................................. 9
Figures
Figure 1-1: 500ADA-EQ-L Block Diagram .......................................................................................................... 1
Figure 2-1: 500ADA-EQ-L Rear Panel Overlay ................................................................................................. 2
Figure 6-1: LED and Jumper Locations .............................................................................................................. 7
500ADA-EQ-L Equalizing Analog Video Distribution Amplifier
TABLE OF CONTENTS
Revision 1.2
Frame Manual
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Summary of Contents for evertz exponent 500ADA-EQ-L
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Page 1: Table Of Contents
Frame Manual 500ADA-EQ-L Equalizing Analog Video Distribution Amplifier TABLE OF CONTENTS OVERVIEW............................1 INSTALLATION..........................2 SPECIFICATIONS..........................3 3.1. ANALOG VIDEO INPUT......................3 3.2. ANALOG VIDEO OUTPUTS ..................... 3 3.3. ELECTRICAL ..........................4 3.4. PHYSICAL ..........................4 STATUS LEDS ........................... 5 CIRCUIT DESCRIPTION........................ - Page 2 Frame Manual 500ADA-EQ-L Equalizing Analog Video Distribution Amplifier REVISION HISTORY REVISION DESCRIPTION DATE Original Version Jul 06 Updated jumper diagram Nov 06 Fixed formatting and typos Jul 07 Revision 1.2...
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Page 3: Overview
Frame Manual 500ADA-EQ-L Equalizing Analog Video Distribution Amplifier OVERVIEW The 500ADA-EQ-L Equalizing Analog Distribution Amplifier is a general purpose amplifier for distributing analog video signals. The 500ADA-EQ-L features one looping (passive) balanced equalized input with eight outputs. The 500ADA-EQ-L amplifier has been designed to distribute a wide range of analog video signals. -
Page 4: Installation
Frame Manual 500ADA-EQ-L Equalizing Analog Video Distribution Amplifier INSTALLATION The 500ADA-EQ-L comes with a companion rear panel overlay that can be placed over the rear panel BNC connectors to identify their function. For information on inserting the module into the frame see section 3 of the 500FR chapter. -
Page 5: Specifications
Frame Manual 500ADA-EQ-L Equalizing Analog Video Distribution Amplifier SPECIFICATIONS Note: At the time of printing, this product has only been qualified for use with standard definition signals. It, however, has been designed to work with high definition signals. Frequency, phase response as well as cable equalization will not be optimized at the upper frequency range of high definition video bandwidths. -
Page 6: Electrical
Frame Manual 500ADA-EQ-L Equalizing Analog Video Distribution Amplifier C/L gain inequality: <+/-0.1% for all cable lengths C/L Delay: LPF OUT: <+/-2nsec LPF IN: <+/-3nsec Output isolation: >42dB to 10MHz, >32 dB to 30MHz Output return loss: >40dB to 30MHz Noise performance: <-78dB RMS NTC7 weighting, <-70dB RMS 15kHz to 5.5MHz 3.3. -
Page 7: Status Leds
HD PRES LED is illuminated. If neither sync size is present, both LEDs are turned off. This technique will also successfully detect HD signals with bi-level sync generated by Evertz DACs for applications with computer monitors. Other manufacturers DACs may not have the same sync size so the detection may not work with these signals. -
Page 8: Circuit Description
Frame Manual 500ADA-EQ-L Equalizing Analog Video Distribution Amplifier CIRCUIT DESCRIPTION The input signal enters the board through looping BNCs with isolated ground so that balanced input processing may be done to remove any common mode hum that may have been added to the signal and ground shield. -
Page 9: Jumpers And User Adjustments
Frame Manual 500ADA-EQ-L Equalizing Analog Video Distribution Amplifier JUMPERS AND USER ADJUSTMENTS MODULE STATUS SLOW FAST CLAMP GAIN INPUT EQ CTRL CLAMP CLAMP LEVEL 8281 1694 HD PRES CABLE (A)500ADA-EQ-L SD PRES VIDEO HIGH SYNC HIGH SYNC LOW FRAME STATUS +12V Figure 6-1: LED and Jumper Locations 6.1. -
Page 10: Dc Restoring (Clamp) Operation
1125-line high definition video will be supported. The clamp position and size will successfully DC restore HD signals with bi-level sync generated by Evertz DACs for applications with computer monitors. Other manufacturers DACs may not have the same sync size and the DC restoring may not work with these signals. -
Page 11: Cable Equalization Operation
Frame Manual 500ADA-EQ-L Equalizing Analog Video Distribution Amplifier 6.5. CABLE EQUALIZATION OPERATION With the cable equalizer EQCTRL POT set fully counter-clockwise, the cable equalizer will be set to the "zero length". As you turn the POT clockwise, more cable equalization is added. To set the POT to the correct position, perform the following calibration: 1. - Page 12 Frame Manual 500ADA-EQ-L Equalizing Analog Video Distribution Amplifier This page left intentionally blank 500ADA-EQ-L - 10 Revision 1.2...
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