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8920ADC

AUDIO A-TO-D CONVERTER

Instruction Manual

SOFTWARE VERSION 2.0.1A

071059503
JUNE 2005

Summary of Contents for 8920ADC -

Page 1: ...8920ADC AUDIO A TO D CONVERTER Instruction Manual SOFTWARE VERSION 2 0 1A 071059503 JUNE 2005 ...

Page 2: ...Solutions to problems and troubleshooting efforts can be found by searching our Frequently Asked Questions FAQ database Software Downloads Software updates drivers and patches can be down loaded Region Voice Fax Address Web Site North America 800 547 8949 Support 530 478 4148 Sales 530 478 3347 Support 530 478 3181 Grass Valley P O Box 599000 Nevada City CA 95959 7900 USA www thomsongrassvalley co...

Page 3: ...e Control Lockout 16 Local Onboard Module Configuration 18 Remote Configuration and Monitoring 19 8900NET Module Information 19 Newton Control Panel Configuration 19 Web Browser Interface 20 8920DAC Links and Web Pages 22 User Settings Web Page 26 Slot Config Web Page 27 Software Update Web Page 29 Specifications 30 Service 31 Status Monitoring 32 LEDs 32 Frame Alarm 33 Web Browser Interface 33 SN...

Page 4: ...4 8920ADC Instruction Manual Contents ...

Page 5: ... features of a specific module of the Gecko 8900 Signal Processing System As part of this module family it is subject to Safety and Regulatory Compliance described in the Gecko 8900 Series frame and power supply documentation see the 8900TX 8900TF 8900TFN Frames Instruction Manual ...

Page 6: ...6 8920ADC Instruction Manual Preface ...

Page 7: ...U 75 Ω signals through BNCs on the rear panel The 8920ADC can modify the outgoing signal to provide channel swap ping channel summing tone and phase inversion The remote control capability supports mode selection and input gain control The 8920ADC features 24 bit resolution AES EBU loop through reference input 48 kHz sampling rate Terminal block input via adapter Independent input level control fr...

Page 8: ...module count for each frame type Note Module capacity figures assume no other modules are in the frame Module Placement in the 8900 Frame There are ten cell locations in the frame to accommodate either analog or digital modules These are the left ten locations Refer to Figure 1 on page 9 The two cells on the right are allocated for the power supplies For addi tional information concerning the Powe...

Page 9: ...ule facing to the right and the ejector tab to the top 2 Verify that the module connector seats properly against the backplane 3 Press the ejector tab in to seat the module in place Frame Monitor Module or Network Interface Module Any 8900 Module Power Supplies only 0595 04r1 0595 03 J1 J2 J3 J4 J5 J6 J7 J8 J9 J10 IN DA1 J2 J4 J6 J8 J1 J2 J3 J4 J5 J6 J7 J8 J9 J10 IN DA3 J1 J2 J3 J4 J5 J6 J7 J8 J9 ...

Page 10: ...duce a full scale output from an analog audio input signal level of 12 dBu to 28 dBu Figure 3 8920ADC Input Output Connectors Outputs The 8920ADC has four AES EBU serial digital outputs J5 through J8 The destination equipment should have a 75 Ω input impedance or loop through inputs that are terminated into 75 Ω Reference Inputs Loop through input BNCs are provided for the required 48 kHz AES EBU ...

Page 11: ...nd Conditions Indicated LED Indication Condition FAULT red Off Normal operation On continuously Module has detected an internal fault Flashing Reference input is faulty or not present COMM yellow Off No activity on frame communication bus Long flash Location Command received by the module from a remote control system Short flash Activity present on the frame communication bus CONF yellow Off Modul...

Page 12: ...signal level is less than 0 5 dBFS On continuously Left channel digitized signal level is greater than 0 5 dBFS Flashing Left channel digitized signal level is transitioning through 0 5 dBFS RIGHT IN CLIP red Off Right channel digitized signal level is less than 0 5 dBFS On continuously Right channel digitized signal level is greater than 0 5 dBFS Flashing Right channel digitized signal level is t...

Page 13: ...is explained in detail in their respective sections of this manual Configuration Summary This section provides a summary of all parameters that can be configured on the 8920DAC module Table 6 on page 17 provides a summary in table format of all parameters and their ranges default values and remote local and control panel function names and locations for setting each value The following parameters ...

Page 14: ...Maximum Operating Level Once you have determined the proper coarse level jumper setting perform the following steps 1 Set the Function Rotary Switch SW1 on the front of the module circuit board to the position marked 0 as shown at left 2 Remove the module from the frame and set jumpers on JP5 and JP6 to the jumper setting that you determine using Table 4 3 Return the module to the frame Using Leve...

Page 15: ... you can use the tone output position to compare with the output level Tone output is position E on the Function Switch and outputs a 1 kHz tone at 20 dBFS Note the internal tone level indication while monitoring the AES output and switch back to 0 or F position on the Function Switch then adjust the gain toggle switch to the same level as the internal tone level Apply the maximum level to the inp...

Page 16: ...witches only To have both Local and Remote access set the jumper across pins 2 and 3 Table 5 8920ADC Output Mode Configuration Switch Position Mode Description 0 Factory default No phase inversion channel swapping or summing 1 Channel swap Left and Right 2 Both channels phase inverted 3 Left channel phase inverted 4 Right channel phase inverted 5 Right channel to both channel outputs 6 Left channe...

Page 17: ...plus R to L R L minus R to L R L plus R L minus R L plus R Inv to L R AES Silence 1K 20 dBFS Audio Control and Status Operational Modes pulldown Refer to Table 7 on page 24 for a description of each setting Function Rotary Switch SW1 Refer to Table 5 on page 16 for switch settings Op Mode Controls type Numeric Numeric or Sliders Audio Control and Status Controls Type pulldown N A Controls Left Cha...

Page 18: ...t levels as described in Using Level Gain Toggle Switches on page 14 Function rotary switch selects a desired output configuration 0 through 9 A through F although not all positions are used CONF configuring LED when on indicates the module is initial izing or processing configuration information Note Function switch positions 0 and F Factory defaults can be used to return the module configuration...

Page 19: ...onfiguration A Newton Control Panel hard or soft version can be interfaced to the Gecko 8900 Series frame over the local network Refer to the documenta tion that accompanies the Newton Modular Control System for installa tion configuration and operation information Control panel access offers the following considerations for module config uration and monitoring Ability to separate system level tas...

Page 20: ...ns slot configuration and SNMP monitoring controls Web access will require some normal network time delays for pro cessing of information Configuration parameter changes may require pressing Apply button or Enter upload processing time and a manual screen refresh to become effective Web interface recommended for setting up module signal and slot names E MEMS and reporting status for SNMP and monit...

Page 21: ...l reflects 8900NET software version 4 0 0 For information on status and fault monitoring and reporting shown on the Status page refer to Status Monitoring on page 32 Figure 7 Gecko 8900 Frame Status Page 0595_08 The Links section lists the frame and its current modules The selected link s Status page is first displayed and the sub list of links for the selection is opened The sub list allows you t...

Page 22: ...t the levels for video composite sync and DC output and video setup amplitude page 24 User Settings select factory defaults and enable or disable status reporting of audio inputs page 26 Slot Config provides a Locate Module function and Slot Memory and SNMP reporting status information page 27 and Software Update provides information on software updating page 29 Figure 8 8920ADC Web Page Links Ref...

Page 23: ...ing can be disabled on the User Settings webpage page 26 If set to disabled the Input Signal s arrow will be gre yed out Refer to Status Monitoring on page 32 for an explanation of the color coding Information about the module such as part number serial number hard ware revision and software and firmware versions are given in a read only section at the bottom of the display Figure 9 8920ADC Status...

Page 24: ...l Modes Set the operational mode pulldown for the desired output of the module from the thirteen selections listed below in Table 7 and shown in the web page in Figure 10 on page 25 After making the selection select the Apply button to activate it Table 7 Audio Output Configuration Modes Mode Name Mode Description Default Factory default with no phase inversion channel swapping or summing L R Swap...

Page 25: ...ut levels using the fine gain adjustments described below Adjust the fine gain in either Numeric or Sliders mode Numeric mode shown in Figure 10 The single arrows increment the value by 1x and the double arrow will increment the value by approximately 10x These controls will allow you 6 0 dB of fine adjustment range Note In Numeric mode only values selected with the single or double arrow keys wil...

Page 26: ...s button to return the module to factory set tings Operation output mode to default all audio levels to 0 dB and Monitor Audio Input mode to disabled Set Monitor Audio Inputs to enable or disable the status reporting of the audio inputs When set to disabled the Input Signal s arrow on the Status web page will be greyed out Figure 11 8920ADC User Settings Web Page Use this link ...

Page 27: ...d configurations are not saved When the Restore upon Install box has been checked the current configu ration saved to this slot is saved as slot memory When the current module is removed and another module of the same type is installed the configuration saved to the 8900NET module will be downloaded to the new module The box must be checked before the current module with the saved configuration is...

Page 28: ...28 8920ADC Instruction Manual Configuration Figure 12 8920ADC Slot Config Web Page ...

Page 29: ...date for complete details Currently the only recommended method of software updating is done with a software kit 8900 FLOAD CBL that includes a CD ROM with the current software files and a serial cable assembly available from Grass Valley Refer to the 8900 FLOAD CBL Software Upgrade Instruction Manual in PDF format on the CD ROM for complete updating instructions and the required software files fo...

Page 30: ...utputs Number of outputs 4 Signal type SMPTE 276M AES3 ID 1992 Signal level 12 to 28 dBu input range adjustable to 0 0 dBFS Output impedance 75 Ω Connector type 75 Ω BNC Coupling AC coupled Performance 28 dBU input and full scale output Sampling rate 48 kHz Frequency response 0 05 dB relative to 1 kHz 20 Hz to 20 kHz Signal to noise ratio 102 dB unweighted 20 Hz to 20 kHz 105 dB A weighted 20 Hz t...

Page 31: ... Verify that source equipment is operating correctly Check cable connections Check output connections for correct I O mapping correct input con nector is used for the corresponding channel output Refer to Figure 4 for the location of PWR LED and Table 2 on page 11 for proper LED indications If the module is still not operating correctly replace it with a known good spare and return the faulty modu...

Page 32: ...nternal faults and normal operation Pass Signal input states including valid present pass not present or invalid warning not monitored and not available no signal inputs Reference input states including locked valid pass not locked invalid warning and not monitored Signal output states with reporting functionality reference output LEDs LEDs on modules in the frame and on the front of the 8900TF TF...

Page 33: ...900NET Network Interface Instruction Manual Web Browser Interface When the 8900NET module is installed in the frame a web browser GUI can indicate frame and module status on the following web pages Frame Status web page reports overall frame and module status in graphical and text formats Module Status web page shows specific input and reference signal status to the module along with enabled optio...

Page 34: ...d on the 8900NET module enabled status reports are sent to an SNMP Manager such as the Grass Valley s NetCentral application There are both hardware and software report enable switches for each report Both must be enabled for the report to be sent Software report switches are set on the 8900NET Configuration web page for the Frame the 8900NET module and each module slot Refer to the 8900NET Networ...

Page 35: ... 3 dB gain steps on the post gain This jumper allows input levels from 12 dBu to 28 dBu to be set to 0dBFS at the output The fine gain control is by two center off toggle switches on the front of the module They provide a 6 dB range of fine gain adjustment in approxi mately 0 1 dB increments The control takes approximately 6 to 10 seconds to transition from minimum to maximum The signal is convert...

Page 36: ...d applied to the Output Drivers The Routing and Control section also drives the front panel LEDs and inter faces to the Controller section Controller The Controller interfaces with the Routing and Control FPGA the EEPROM and the 8900 Frame Bus The Controller also provides the FPGA code that is downloaded to the FPGA during boot up The Controller section handles local control and monitoring as well...

Page 37: ...8 local on board 18 overview 13 Remote GUI 19 summary table 17 switches 18 control panel control summary table 17 overview 19 Controls status reporting 27 D documentation online 2 E enable SNMP 34 F factory defaults remote control 26 summary table 17 FAQ database 2 FAULT LED description 11 troubleshooting 32 fine level adjustment local on board 18 remote 25 frame cell locations 8 cooling capacity ...

Page 38: ...tions LED indications 11 operational mode remote control 24 rotary switch 16 summary table 17 output mode rotary switch 16 outputs configuration 16 connectors 10 level adjustments 19 local on board 15 remote 25 specification 30 termination 10 overlay 10 P power requirements 30 PWR LED 11 R reference inputs 10 REM OVER remote override LED 12 remote control lockout jumper 16 18 report enable switche...

Page 39: ...n Manual 39 Index T termination 10 toggle switches 18 setting levels 14 troubleshooting 31 U User Settings web page 26 W web browser overview 20 web site documentation 2 FAQ database 2 Grass Valley 2 software download 2 ...

Page 40: ...40 8920ADC Instruction Manual Index ...

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