Grass Valley 8920ADC User Manual v.2.0.1A
8920ADC
AUDIO A-TO-D CONVERTER
Instruction Manual
SOFTWARE VERSION 2.0.1A
071059503
JUNE 2005
Contacting Grass Valley
Region Voice Fax Address Web Site
North America (800) 547-8949
Support: 530-478-4148
Pacific Operations +852-2585-6688
Support: 852-2585-6579
U.K., Asia, Middle East +44 1753 218 777 +44 1753 218 757
France +33 1 45 29 73 00
Germany, Europe +49 6150 104 782 +49 6150 104 223
Copyright © Thomson Broadcast and Media Solutions All rights reserved.
Grass Valley Web Site
Sales: (530) 478-3347
Support: (530) 478-3181
+852-2802-2996
Grass Valley
P.O. Box 599000
Nevada City, CA 959597900 USA
www.thomsongrassvalley.com
The www
Online User Documentation
.thomsongrassvalley.com web site offers the following:
— Current versions of product catalogs, brochures,
data sheets, ordering guides, planning guides, manuals, and release notes
in .pdf format can be downloaded.
FAQ Database
— 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.
2 8920ADC Instruction Manual
Contents
Preface
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
About This Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
8920ADC Analog Audio to AES/EBU Converter
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Frame Capacity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Module Placement in the 8900 Frame. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Cabling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Input. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Reference Inputs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Power Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Operation Indicator LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Configuration Summary. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Output Level Adjustment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Configuring Output Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Remote 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
SNMP Reporting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Differential Input, Analog Gain and A/D Converters . . . . . . . . . . . . . . . . . . . . 35
Digital Reference Input. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Routing and Control FPGA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Power Supply. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Index
8920ADC Instruction Manual 3
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Contents
4 8920ADC Instruction Manual
Preface
About This Manual
This manual describes the 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
).
8920ADC Instruction Manual 5
Preface
6 8920ADC Instruction Manual
8920ADC Analog Audio to AES/EBU Converter
Introduction
The 8920ADC converts analog audio to digital audio. The right and left
channel audio inputs enter via a terminal block-to-BNC adapter on the rear
panel. A 48 kHz AES/EBU reference is required to lock the module, which
is connected to the loop through input BNCs. The module outputs 4
AES/EBU 75
Ω signals through BNCs on the rear panel.
The 8920ADC can modify the outgoing signal to provide channel swapping, 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 from +12 dBu to +28 dBu,
• 8900 Series Frame compatibility,
•Remote control via ethernet frame I/F,
•Newton Control Panel,
•SNMP monitoring, and
•Remote control lockout via onboard jumper.
8920ADC Instruction Manual 7
Installation
Installation
Frame Capacity
1.
2.
3.
Installation of the 8920ADC module is a process of:
Placing the module in the desired frame slot,
Cabling and terminating signal ports, and
Configuring the module.
The 8920ADC module can be plugged in and removed from an 8900 Series
frame with power on. When power is applied to the module, LED indicators reflect the initialization process (see Power Up on page 11).
The 8920ADC module can be installed in all 8900 Series frames but with
varying maximum quantities determined by frame cooling capacity.
Table 1 provides the power capacity, cooling capacity, and maximum
module count for each frame type.
Table 1. Power, Cooling, and Module Capacity of 8900 Frames
Capacity Calculated
Power (W) 100 100 100
Recommended Module Cooling (W) 30 90 90
8920ADC Modules 7 10 10
Note
Module capacity figures assume no other modules are in the frame.
8900TX
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 additional information concerning the Power Supply module, refer to the
8900 Frame Instruction Manual
The third cell from the right is allocated for the Frame Monitor or 8900NET
Network Interface controller modules. These modules provide health monitoring and control options.
.
8900TF
Frame
8900TFN
Frame
Gecko
8 8920ADC Instruction Manual
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 J10
IN
DA5
J1 J2
J3 J4
J5 J6
J7 J8
J9 J10
IN
DA2
J1 J2
J3 J4
J5 J6
J7 J8
J9 J10
IN
DA7
J1 J2
J3 J4
J5 J6
J7 J8
J9 J10
IN
DA9
J1 J2
J3 J4
J5 J6
J7 J8
J9 J10
IN
DA4
J2
J4
J6
J8
J1 J2
J3 J4
J5 J6
J7 J8
J9 J10
IN
DA6
J2
J4
J6
J8
J1 J2
J3 J4
J5 J6
J7 J8
J9 J10
IN
DA8
J2
J4
J6
J8
J1 J2
J3 J4
J5 J6
J7 J8
J9 J10
IN
DA10
O
U
T
O
U
T
O
U
T
O
U
T
O
U
T
O
U
T
O
U
T
O
U
T
O
U
T
O
U
T
1.
2.
3.
Figure 1. 8900 Series Frame
Installation
8900 modules are interchangeable within the module cells. There are 10
BNC connectors in each cell’s I/O group. The functional assignment of
each connector in a group is determined by the module that is placed in
that cell. The maximum number of modules an 8900 frame can accept is ten.
Figure 2 illustrates the rear connector plate for an 8900 Series frame.
Figure 2. 8900 Series Frame Rear Connector
To install a module in the frame:
Insert the module, connector end first, with the component side of the
module facing to the right and the ejector tab to the top.
Verify that the module connector seats properly against the backplane.
Press the ejector tab in to seat the module in place.
8920ADC Instruction Manual 9
Installation
Cabling
Input
Note
At the back of this manual are overlay cards that can be placed over the rear
connector BNCs to identify the specific 8920ADC connector functions.
Connect a balanced input source to the stereo pair input terminal block (see
Figure 3).
CAUTION The input signal must be balanced. Connecting an un-balanced input signal
at high signal levels may damage the input receivers.
The 8920ADC can produce a full-scale output from an analog audio input
signal level of +12 dBu to +28 dBu.
Figure 3. 8920ADC Input/Output Connectors
Grass Valley
DAx
Adaptor
R+
J2
J2
GND
R–
J4
J4
T
J4
Analog balanced
input adapter
J1
J1
J3
L+
GND
L–
O
U
AES reference
loop-through input
Outputs
Reference Inputs
J5
J7
J9 J10
IN
J6
J8
J6
J8
AES outputs
0595-02
The 8920ADC has four AES/EBU serial digital outputs—J5 through J8. The
Ω
destination equipment should have a 75
through inputs that are terminated into 75
input impedance or loop
Ω .
Loop-through input BNCs are provided for the required 48 kHz AES/EBU
reference signals. Terminate the looping BNC into 75
Ω if not used.
10 8920ADC Instruction Manual
Power Up
Operation Indicator LEDs
Power Up
The front LED indicators and configuration switches are illustrated in
Figure 4. Upon power-up, the green PWR LED should light and the yellow
CONF LED should illuminate for the duration of module initialization.
With factory default configuration and valid input and reference signals
connected, the green PWR LED and the green LOCK LED should be on.
Figure 4. Operation Indicator LEDs
FAULT (red)
COMM (yellow)
CONF (yellow)
PWR (green)
REM OVER (yellow)
LOCK (green)
Left In
Clip (red)
Right In
Clip (red)
Left In > -20dBFS (green)
Right In > -20dBFS (green)
A red FAULT LED indicates an error situation and, with the other LEDs,
can indicate the operational conditions presented in Table 2. The table
describes signal output and LED indications for various input/reference
combinations and user settings.
Table 2. Indicator LEDs and Conditions Indicated
LED Indication Condition
FAULT
(red)
COMM
(yellow)
CONF
(yellow)
PWR
(green)
Off Normal operation.
On continuously Module has detected an internal fault.
Flashing Reference input is faulty or not present.
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.
Off Module is in normal operating mode.
On continuously
Flashing Indicates rate of change of paddle-controlled analog setting.
Off No power to module or module’s DC/DC converter failed.
On continuously Normal operation, module is powered.
Module is initializing, changing operating modes or updating firmware. Simultaneous CONF and FAULT LEDs on indicate FPGA load error.
0595_06
8920ADC Instruction Manual 11
Power Up
Table 2. Indicator LEDs and Conditions Indicated - (continued)
LED Indication Condition
REM OVER
(yellow)
LOCK
(green)
LEFT IN
(green)
RIGHT IN
(green)
LEFT IN
CLIP
(red)
RIGHT IN
CLIP
(red)
Off Module configuration matches switch and jumper settings.
On continuously
Off Module does not detect a valid AES in reference signal.
On continuously Valid AES in reference signal is present and module is locked to it.
Off Left channel level is less than -20 dBFS.
On continuously Left channel level is greater than -20 dBFS.
Flashing Left channel level is transitioning through -20 dBFS
Off Right channel level is less than -20 dBFS.
On continuously Right channel level is greater than -20 dBFS.
Flashing Right channel level is transitioning through -20 dBFS
Off Left channel digitized 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.
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 transitioning through -0.5 dBFS.
Module configuration may not match switch and jumper settings. Control has been
remotely overridden.
Table 3 provides the possible input conditions and the output condition
that results.
Table 3. Possible Operating Conditions
Audio Input Condition Reference Input Condition Output Condition
Audio inputs present Valid reference input present AES/EBU serial digital output sampled at 48 kHz.
No audio input signal present Valid reference input present AES/EBU serial digital output sampled at 48 kHz. See S/N specification for level.
Audio inputs present Reference not present AES/EBU serial digital output sampled at approximately 47.992 kHz. Internal
freerun clock rate.
Audio inputs present Invalid reference input Invalid AES/EBU serial digital output.
12 8920ADC Instruction Manual
Loading...