OSEE DAC6820N User manual

DAC6820N (4) Balanced/unbalanced
AES to Analog Audio Converter
USER MANUAL

Product Information
Model: DAC6820N Balanced/unbalanced AES to Analog Audio Converter
DAC6820N4 Balanced/unbalanced AES to Analog Audio
Converter
Version: V010001
Release Date: March 12th, 2015
Company
OSEE TECHNOLOGY CO., LTD.
Contact Information
Address: No.22 Building, No.68 zone, Beiqing Road, Haidian District,
Beijing, China
Post Code: 100094
Tel: [phone]
Fax: [phone]
Web: http://www.osee-dig.com/
E-mail: [email protected]

Contents
Chapter 1 Introduction........................................................................................................ 1
Overview........................................................................................................................................... 1
Features............................................................................................................................................. 1
Module Descriptions........................................................................................................................ 2
The Front Part of Module ....................................................................................................... 2
Back Connector................................................................................................................................ 2
DAC6820N (4) .......................................................................................................................... 3
Signal Flow ....................................................................................................................................... 3
Chapter 2 Installation.......................................................................................................... 4
Overview........................................................................................................................................... 4
Maximum Power Ratings for Frame.............................................................................................. 4
Unpacking the Module..................................................................................................................... 4
Preparing the Product for Installation................................................................................... 4
Check the Packing List............................................................................................................ 4
Installing the Module....................................................................................................................... 4
Install the front panel. Making the Connections........................................................................... 5
Removing the Module...................................................................................................................... 6
Chapter 3 Operation and Control...................................................................................... 6
Control .............................................................................................................................................. 6
Setting Jumper................................................................................................................................. 6
LED Indicator .................................................................................................................................. 7
Chapter 4 Specifications...................................................................................................... 8
Chapter 5 Warranty for osee product................................................................................9
What the warranty covers............................................................................................................... 9
What the warranty does not cover ................................................................................................. 9

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DAC6820N (4) Balanced/unbalanced AES to Analog Audio Converter
Chapter 1 Introduction
Overview
The DAC6820N/DAC6820N4 is the converter module that can convert Digital audio to Analog audio. It
provides one/two balanced or unbalanced AES audio inputs and two/four balanced analog audio outputs.
The two modules both have status indicator.
The module has its own features stated as Tab. 1-1:
Tab. 1-1 DAC6820N (4) Balanced/unbalanced AES to Analog Audio Converter
Module Input output
DAC6820N One balanced or unbalanced AES
audio inputs Two balanced analog audio outputs
DAC6820N4 Two balanced or unbalanced AES
audio inputs Four balanced analog audio outputs
Features
The DAC6820N (4) offers the following features:
One/two balanced and unbalanced AES inputs
Two/four balanced analog audio outputs
32KHz~96KHz sampling frequency
16, 20, 24-bit audio processing
Selectable analog audio output level
Status indicator
Local/remote control and monitoring
FCC Caution:
Any Changes or modifications not expressly approved by the party responsible for compliance could
void the user's authority to operate the equipment.
This device complies with part 15 of the FCC Rules.
Operation is subject to the following two conditions: (1) This device may not cause harmful interference,
and (2) this device must accept any interference received, including interference that may cause
undesired operation.
Note: This equipment has been tested and found to comply with the limits for a Class B digital device,
pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against
harmful interference in a residential installation. This equipment generates uses and can radiate radio

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frequency energy and, if not installed and used in accordance with the instructions, may cause harmful
interference to radio communications. However, there is no guarantee that interference will not occur in
a particular installation. If this equipment does cause harmful interference to radio or television
reception, which can be determined by turning the equipment off and on, the user is encouraged to try to
correct the interference by one or more of the following measures:
Reorient or relocate the receiving antenna.
Increase the separation between the equipment and receiver.
Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
Consult the dealer or an experienced radio/TV technician for help.
Module Descriptions
The Front Part of Module
Figure 1-1 shows the board of DAC6820N (4)
Fig. 1-1 The board of DAC6820N (4)
Back Connector

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DAC6820N (4)
Fig.1-2 Back Connector of DAC6820N (4)
Tab. 1-2 description of DAC6820N (4) Back Connector
Item Description
AESI 1,AESI 2 Balanced or unbalanced AES audio inputs.
For DAC6820N, AESI 2 is invalid.
ANALOG AUDIO OUT
1A,1B,2A,2B
Balanced analog audio outputs.
For DAC6820N, 2A and 2B are invalid.
Signal Flow
Fig. 1-3 Signal Flow of DAC6820N
Fig. 1-4 Signal Flow of DAC6820N4

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Chapter 2 Installation
Overview
The power consumption for module and the maximum power ratings that frame can sustain have to be
confirmed before installing the module.
In this chapter, the following topics on installation process for DAC6820N (4) are discussed below:
Unpacking the module
Installing the module
Making the connections
Removing the module
Maximum Power Ratings for Frame
The maximum power ratings that different types of frames can sustain are listed in the Table 2-1
Tab. 2-1 Maximum Power Consumption
Frame Maximum Voltage Redundant Power Supplies Numbers of Slots
6800N-1U 40W Yes 4
6800N-2U 60W Yes 10
Unpacking the Module
Check the Packing List
Tab. 2-2 Packed Components
Model Name Description
DAC6820N (4) DAC6820N (4) module (1pc); back connector (1pc), and other accessories
Preparing the Product for Installation
Contact your dealer right now if any items are missing.
Follow the procedures below before installing the module:
Check the equipment for any invisible damage that may have occurred during transit.
Confirm all the items listed on the packing list have been received.
Remove all the packing material including electrostatic-resistant packing.
Retain these packing for future use.
Installing the Module
Caution：Static electricity may cause sensitive semiconductor out of order. Avoid installing
or removing the module in the electrostatic-induced environment.

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Follow the following steps to install the module:
Step 1：Locate the position for back connector and insert the back connector
Step2：Fasten the screw to fix the back connector.
Step3：Locate the slot for module.
Step 4：Get the module installed in the slot, push the module slightly along the slot, press module again
to confirm that the module is installed firmly and then close swivel handle.
Step5：Install the front panel.
Fig. 2-1 Installation of 2U Frame of 6800 Series
Install the front panel. Making the Connections
Please connect signals based on Fig. 1-2.

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Removing the Module
Follow the following steps to remove DAC6820N (4) module:
1. Open the front part of frame.
2. Open the swivel handle to the full.
3. First make sure the frame stands firmly, and then pull the module gently along the slot till out
of frame.
4. Install the front panel.
Chapter 3 Operation and Control
Control
Directly turn the switch up for one second. Set “error is masked”. Here, it indicates that the
module can still receive data when the errors of QCRC, CCRC, UNLOCK, V, CONF, BIP and PAR
appear in the receiver port.
Turn the switch down for one second. Set “error is unmasked”. Here, it indicates that the
module can not receive data when the errors of QCRC, CCRC, UNLOCK, V, CONF, BIP and PAR
appear in the receiver port.
The definitions of seven types of errors in the receiver port are as follows.
1. QCRC – CRC error in Q subcode data.
2. CCRC – CRC error in channel status data.
3. UNLOCK – PLL is not locked to incoming data stream.
4. V – Data Validity bit is set.
5. CONF – The logical OR of UNLOCK and BIP. The input data stream may be near error
condition due to jitter degradation.
6. BIP – Biphase encoding error.
7. PAR – Parity error in incoming data.
Setting Jumper
Set the jumpers, which are JP1, JP2, JP3, JP4, JP5, JP6, JP7, JP8, JP9, JP10, JP11 and JP12, to
adjust the analog audio output level values from 16dB to 28dB.
Set the corresponding position of the jumpers, which are JP21, JP22, JP23 and JP24, to set the
balanced or unbalanced input of digital audio. The position of the jumper must be
corresponding to the real input audio.

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LED Indicator
Table 2-4 LED Indicator Function
Item Description
POWER On: Power is supplied.
AUD1 1A
green For the status of “unmasked”, the indicator
lights, when the input data is correct.
For the status of “unmasked”, the indicator
goes out, when the input data is error.
For the status of “masked”, the indicator
goes out.
AUD2 1B
green
AUD3 2A (only for
DAC6820N4) green
For the status of “unmasked”, the indicator
lights, when the input data is correct.
For the status of “unmasked”, the indicator
goes out, when the input data is error.
For the status of “masked”, the indicator
goes out.
AUD4 2B(only for
DAC6820N4) green

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Chapter 4 Specifications
Balanced AES Inputs
Number of inputs DAC6820N: 1; DAC6820N4:2
Standard AES3-1992(r1997)
Connector 3-pinconnector(male)
Impedance 110Ω+/-20%
Signallevel 2to7Vpk-to-pk
Minimum signal level 200 mV as per AES3
Sampling frequency Supports 32 kHz to 96 kHz
CMRRatio Upto7Vpk-to-pk,fromDCto20kHz
Unbalanced AES Inputs
Standard AES3-1992(r1997),AES3-id-2001,SMPTE276M
Connector BNC(IEC169-8)
Numberofinputs DAC6820N:1DAC6820N4: 2
Impedance 75Ω
Signallevel 1Vpk-to-pk,+/-10%
Minimum signal level 100 mV as per SMPTE276M
Returnloss >25dB,0.1to6MHz
Samplingfrequency Supports32kHzto96kHz
Balanced Analog Audio Outputs
Type Electronic,balanced
Connector 3-pinconnector(male)
Output level setting range +16 dBu to +28 dBu
Maximum output level 0 dBFS = +28 dBu
Outputimpedance 66Ω
THD+N <-85dB@1kHz,-1dBFS=+23dBu
Crosstalk <-95dB,20Hzto20kHz,typical
SNR >100dB@0dBFS
Power Consumption
Power 2.3W
Positiverail 350mA
Negativerail 10mA
Note: Specifications are subject to change without notice

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Chapter 5 Warranty for Osee product
What the warranty covers:
Osee warrants its products to be free from defects in material and workmanship during the warranty
period of two years from purchase date. If a product proves to be defective in material or workmanship
during the warranty period, Osee will, at its sole option, repair or replace the product with a similar
product. The replacement unit will be covered by the balance of the time remaining on the customer’s
original limited warranty.
No sales personnel of the seller or any other person is authorized to make any warranties other than
those described above, or to extend the duration of any warranties on behalf of Osee, beyond the time
period describe above.
This warranty is extended to the first consumer only, and proof of purchase is necessary to honor the
warranty. If there is no proof of purchase provided with a warranty claim, Osee reserves the right not to
honor the warranty set forth above. Therefore, labor and parts may be charged to the consumer.
What the warranty does not cover:
1. Any product, on which the serial number has been defaced, modified or removed.
2. Damage, deterioration or malfunction resulting from:
Accident, misuse, neglect, fire, water, lightning, or other acts of nature, unauthorized product
modification, or failure to follow instructions supplied with the product
Repair or attempted repair by anyone not authorized by Osee
Any damage of the product due to shipment.
Removal or installation of the product.
Causes external to the product, such as electric power fluctuations or failure.
Use of supplies or parts not meeting Osee product’s specifications.
Normal wear and tear.
Any other cause which does not relate to a product defect.