Table of Contents
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1.
OVERVIEW.......................................................................................................................................... 1
2.
INSTALLATION................................................................................................................................... 2
3.
SPECIFICATIONS............................................................................................................................... 3
3.1. INPUTS ....................................................................................................................................... 3
3.2. OUTPUTS ................................................................................................................................... 3
3.3. ELECTRICAL ............................................................................................................................. 3
3.4. PHYSICAL .................................................................................................................................. 3
4.
STATUS LEDS .................................................................................................................................... 4
5.
CIRCUIT DESCRIPTION..................................................................................................................... 5
6.
JUMPERS AND USER ADJUSTMENTS ............................................................................................ 6
BY THE GLOBAL FRAME STATUS .......................................................................................... 6
6.2. SELECTING THE INPUT AC/DC COUPLING ............................................................................ 6
6.3. GAIN ADJUSTMENT.................................................................................................................. 6
6.4. CABLE EQUALIZATION OPERATION...................................................................................... 7
Figures
Figure 1-1: 7700ADA-ETSI Block Diagram...........................................................................................................1
Figure 2-1: Rear Panel .........................................................................................................................................2
Figure 6-1: LED and Jumper Locations ................................................................................................................6
7700ADA-ETSI High Amplitude Distribution Amplifier
TABLE OF CONTENTS
Revision 1.1
7700 Multiframe Manual
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Summary of Contents for evertz 7700
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Page 1: Table Of Contents
7700 Multiframe Manual 7700ADA-ETSI High Amplitude Distribution Amplifier TABLE OF CONTENTS OVERVIEW............................1 INSTALLATION........................... 2 SPECIFICATIONS..........................3 3.1. INPUTS ............................3 3.2. OUTPUTS ........................... 3 3.3. ELECTRICAL ..........................3 3.4. PHYSICAL ..........................3 STATUS LEDS ............................ 4 CIRCUIT DESCRIPTION........................5 JUMPERS AND USER ADJUSTMENTS .................... - Page 2 Sept 09 Information contained in this manual is believed to be accurate and reliable. However, Evertz assumes no responsibility for the use thereof nor for the rights of third parties, which may be affected in any way by the use thereof. Any representations in this document concerning performance of Evertz products are for informational use only and are not warranties of future performance, either expressed or implied.
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Page 3: Overview
7700 Multiframe Manual 7700ADA-ETSI High Amplitude Distribution Amplifier OVERVIEW The 7700ADA-ETSI High Amplitude Distribution Amplifier is a general purpose amplifier with an equalizing function for distributing a wide range of digital and analog signals. It has been designed to distribute pulses and signals up to ±3.5V ITU-T G.703 E12 (Physical/electrical characteristics of hierarchical digital... -
Page 4: Installation
7700 Multiframe Manual 7700ADA-ETSI High Amplitude Distribution Amplifier INSTALLATION The 7700ADA-ETSI comes with a companion rear panel and occupies one slot in the 7700FR frame. Figure 2-1 shows a diagram of the rear panel. For information on inserting the module into the frame see the 7700FR manual section 3. -
Page 5: Specifications
7700 Multiframe Manual 7700ADA-ETSI High Amplitude Distribution Amplifier SPECIFICATIONS All specifications, unless otherwise indicated, are measured under the following conditions: • 1 Vp-p video applied • 75 Ohm source impedance signal • DC coupled • Gain adjusted for unity operation into 75 Ohm load •... -
Page 6: Status Leds
7700 Multiframe Manual 7700ADA-ETSI High Amplitude Distribution Amplifier STATUS LEDS Two large LEDs on the front of the board indicate the general health of the module. LOCAL FAULT: This Red LED indicates poor module health and will be illuminated when a local input power fault exists (i.e.: a blown fuse). -
Page 7: Circuit Description
7700 Multiframe Manual 7700ADA-ETSI High Amplitude Distribution Amplifier CIRCUIT DESCRIPTION The input signal enters the board through a BNC 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 8: Jumpers And User Adjustments
7700 Multiframe Manual 7700ADA-ETSI High Amplitude Distribution Amplifier JUMPERS AND USER ADJUSTMENTS MODULE STATUS GAIN INPUT EQ CTRL (1)7700ADA-ETSI 8281 1694 CABLE FRAME STATUS Figure 6-1: LED and Jumper Locations 6.1. SELECTING WHETHER LOCAL FAULTS WILL BE MONITORED BY THE GLOBAL FRAME STATUS The FRAME STATUS jumper J1, located at the front of the module, determines whether local faults (as shown by the Local Fault indicator) will be connected to the 7700FR frame's global status bus. -
Page 9: Cable Equalization Operation
7700 Multiframe Manual 7700ADA-ETSI High Amplitude Distribution Amplifier 6.4. 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 10 7700 Multiframe Manual 7700ADA-ETSI High Amplitude Distribution Amplifier This page left intentionally blank Page - 8 Revision 1.1...
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