evertz 7700 Series Manual
Quad analog audio to dual aes converter
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Table of Contents
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1.
OVERVIEW.......................................................................................................................................... 1
2.
INSTALLATION................................................................................................................................... 2
2.1. ANALOG AUDIO CONNECTIONS............................................................................................. 3
2.2. AES AUDIO CONNECTIONS ..................................................................................................... 3
2.3. AES REFERENCE CONNECTIONS .......................................................................................... 3
3.
SPECIFICATIONS............................................................................................................................... 4
3.1. ANALOG AUDIO INPUT............................................................................................................. 4
3.2. AES AUDIO OUTPUTS .............................................................................................................. 4
3.3. REFERENCE INPUT .................................................................................................................. 4
3.4. ELECTRICAL ............................................................................................................................. 5
3.5. PHYSICAL .................................................................................................................................. 5
4.
STATUS INDICATORS ....................................................................................................................... 6
4.1. MODULE STATUS LEDS ........................................................................................................... 6
4.2. DOT-MATRIX DISPLAY ............................................................................................................. 6
4.2.1. Audio Level Bar Graphs .................................................................................................. 6
5.
CARD EDGE CONTROLS .................................................................................................................. 8
5.1. AUDIO LEVELS, HEADROOM, CLIPPING AND THE BAR GRAPHS ...................................... 8
5.1.1. Input Audio Level Calibration .......................................................................................... 8
6.
JUMPERS.......................................................................................................................................... 10
BY THE GLOBAL FRAME STATUS ........................................................................................ 10
6.2. SETTING THE COARSE ANALOG INPUT GAIN RANGE....................................................... 10
6.3. CONFIGURING THE MODULE FOR FIRMWARE UPGRADES .............................................. 11
Figures
Figure 1-1: 7720ADC-A4 Block Diagram ..............................................................................................................1
Figure 2-1: 7720ADC-A4 and 7720ADC-A4-B Rear Panels.................................................................................2
Figure 4-1: Bar Graph Displays.............................................................................................................................6
Figure 6-1: Location of Jumpers..........................................................................................................................10
Tables
Table 4-1: Bar Graph Levels .................................................................................................................................7
7720ADC-A4-(B) Quad Analog Audio to Dual AES Converter
TABLE OF CONTENTS
Revision 1.2
7700 MultiFrame Manual
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Summary of Contents for evertz 7700 Series
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Page 1: Table Of Contents
7700 MultiFrame Manual 7720ADC-A4-(B) Quad Analog Audio to Dual AES Converter TABLE OF CONTENTS OVERVIEW............................1 INSTALLATION........................... 2 2.1. ANALOG AUDIO CONNECTIONS..................... 3 2.2. AES AUDIO CONNECTIONS ..................... 3 2.3. AES REFERENCE CONNECTIONS ..................3 SPECIFICATIONS..........................4 3.1. ANALOG AUDIO INPUT......................4 3.2. - Page 2 Feb 2010 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 effected 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 express or implied.
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Page 3: Overview
7700 MultiFrame Manual 7720ADC-A4-(B) Quad Analog Audio to Dual AES Converter OVERVIEW The 7720ADC-A4 is a high-quality, 24-bit, analog to digital audio converter which provides digital conversion of 4 balanced analog audio channels and provides 2 unbalanced (or balanced from the 7720ADC-A4-B) AES/EBU channels out. -
Page 4: Installation
7700 MultiFrame Manual 7720ADC-A4-(B) Quad Analog Audio to Dual AES Converter INSTALLATION The 7720ADC-A4 modules each come with a companion rear plate that has 3 BNC connectors and two 6 pin terminal strips. For information on mounting the rear plate and inserting the module into the frame see section 3 of the 7700FR chapter. -
Page 5: Analog Audio Connections
7700 MultiFrame Manual 7720ADC-A4-(B) Quad Analog Audio to Dual AES Converter 2.1. ANALOG AUDIO CONNECTIONS The 7720ADC-A4 has two 6 pin terminal blocks containing balanced analog audio inputs. The audio cables can be secured into the removable portion of the terminal strips using a small screwdriver. The removable part of the terminal strip is then inserted into the rear panel. -
Page 6: Specifications
7700 MultiFrame Manual 7720ADC-A4-(B) Quad Analog Audio to Dual AES Converter SPECIFICATIONS 3.1. ANALOG AUDIO INPUT Number of Inputs: Balanced analog audio Type: Removable terminal strip Connector: 10k Ω minimum (differential) Input Impedance: 48kHz synchronous locked to reference Sampling Frequency: 48 kHz ±... -
Page 7: Electrical
7700 MultiFrame Manual 7720ADC-A4-(B) Quad Analog Audio to Dual AES Converter 3.4. ELECTRICAL + 12VDC Voltage: 10 watts Power: Complies with FCC Part 15, class A and EU EMC directive. EMI/RFI: 3.5. PHYSICAL 7700 or 7701 frame mounting: Number of slots: Stand Alone Enclosure: 14 “... -
Page 8: Status Indicators
7700 MultiFrame Manual 7720ADC-A4-(B) Quad Analog Audio to Dual AES Converter STATUS INDICATORS The 7720ADC-A4 has 2 LED Status indicators and a 4 digit alphanumeric display on the front card edge to show operational status of the card at a glance. The card edge pushbutton is used to select various displays on the alphanumeric display. -
Page 9: Table 4-1: Bar Graph Levels
7700 MultiFrame Manual 7720ADC-A4-(B) Quad Analog Audio to Dual AES Converter The signal levels shown in Table 4-1 are nominally in dBFS units. Table 4-1 also shows the levels in dBu when the gain is set to 0 dB (see section 5.1.1) and the level jumpers are set so that 24 dBu = 0 dBFS (see section 6.2). -
Page 10: Card Edge Controls
7700 MultiFrame Manual 7720ADC-A4-(B) Quad Analog Audio to Dual AES Converter CARD EDGE CONTROLS On the card edge there is a toggle switch and a ten position rotary switch that are used to choose what will be displayed on the dot matrix display, and to set the gain for each of the analog channels. 5.1. - Page 11 7700 MultiFrame Manual 7720ADC-A4-(B) Quad Analog Audio to Dual AES Converter The following is an example calibration procedure: 1. Take your analog program reference level and add the amount of desired headroom in the digital signal (SMPTE standard is 20dB). If this number is greater than 18dBu, then remove the 8 jumpers near the rear of the 7720ADC-A4 module.
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Page 12: Jumpers
7700 MultiFrame Manual 7720ADC-A4-(B) Quad Analog Audio to Dual AES Converter JUMPERS FRAME STATUS MODULE STATUS EVERTZ (A) 7735AI +12V SFF POWER Figure 6-1: Location of Jumpers 6.1. SELECTING WHETHER LOCAL FAULTS WILL BE MONITORED BY THE GLOBAL FRAME STATUS... -
Page 13: Configuring The Module For Firmware Upgrades
7700 MultiFrame Manual 7720ADC-A4-(B) Quad Analog Audio to Dual AES Converter 6.3. CONFIGURING THE MODULE FOR FIRMWARE UPGRADES The UPGRADE jumper J28 located at the front of the module is used when firmware UPGRADE: upgrades are being done to the module. For normal operation it should be installed in the RUN position. - Page 14 7700 MultiFrame Manual 7720ADC-A4-(B) Quad Analog Audio to Dual AES Converter This page left intentionally blank Revision 1.2 7720ADC-A4-(B)-12...
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