Broadcast Microwave Services CCII-7 Carry Coder II User Manual 02 24 2005

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Document Description	user manual part 2
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Date Submitted	2005-03-16 00:00:00
Date Available	2005-03-16 00:00:00
Creation Date	2005-03-16 16:11:21
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Document Lastmod	2005-03-16 16:11:35
Document Title	02-24-2005
Document Creator	Panasonic Communications Utility
Document Author:	Panasonic Communications Co., Ltd.

BROADCAST CARRY-CODER
MICROWAVE User Manual
VWINVCMMN SERVICES, INC.
3.3 Changing Operator Menu parameter values
When changing an operating parameter, line 2 describes the parameter and line 3 offers the available choices:
RF OUTPUT POWER
OFF LOW MID HIGH MAX
The cursor (underscore) shows that the transmitter output is switched off.
The operator can change the current condition (displayed line 3) by using the Left Arrow < 6 > or Right Arrow < 9 > keys, moving
the cursor under the desired transmit output power level, followed by pressing the < OK > key to accept the chosen parameter. If the
user doesn’t confirm his choice by pressing the < OK > key, or uses the Up Arrow < m > or Down Arrow < 4/ > keys, the operating
parameter change is cancelled; the current parameter is not modified. This is a convenient “escape“ features
Certain operating parameters are entered values (not multiple choice). For example, the frequency is displayed as follows:
FREQUENCY
2454.25 MHz
To change the current value of this parameter, the operator presses < 0K >, entering the Menu Edit mode, so the cursor appears
under the first figure of the displayed frequency, as follows:
FREQUENCY
2454.25 MHZ
The frequency value is changed by the following steps: (1) move the cursor to the appropriate figure using the < 6 > and < -) >
keys; (2) increment or decrement the selected figure using the < fr > and < sl/ > keys For example:
FREQUENCY
245&25 MHz
The frequency value to the right of the decimal point is a fractional MHz value, selected in steps of 250 KHz (.25 MHz). Repeat the
operation (previously described) to increment or decrement this value. To increment to a frequency of 2450.50 MHz, move the
cursor to the right of the decimal point, then press the < 1 > one time:
FREQUENCY
2450@ MHz
After modifying all of the necessary digits, the operator must validate the chosen frequency by pressing < 0K >, closing the Menu
Edit mode, changing the operating frequency.
FREQUENCY
2450.50 MHz
\\ I / If you make a mistake while setting a number and you want to restore the previous value, don’t validate your
\ modifications: simply wait during 30 seconds without touching the keypad. The system will automatically exit the edit
mode without saving the modifications; the display returns to the status screen.
6051397800 Rev A Page : 11
BMS $853,223: CARRY-CODER
me/iMMtv SERVICESLINC. User Manual
3.4 Setting Transmitter Operating Frequency
CARRY-CODER ll using direct frequency entry: the RF frequency is set as follows:
2454.25 MHz
FREQUENCY
2454.25 MHz
The frequency display is expressed in MHz with 250 kHz tuning steps. The frequency value corresponds to the center of the 8 MHz
RF channel that is used for transmission. If the user tries to enter a value which is not in the operating frequency range, an “Out of
range" message is displayed and the current frequency value is not changed.
CARRY-CODER II for Broadcast , the RF operating frequency is set using the channel plan with frequency offset:
CH 3- 2029.25 MHz
FREQUENCY
2101.50 MHz
The US channels table and corresponding frequencies is the following :
Channel Freguency
CH 1 - 1994.75 MHz
CH 1 0 1999.00 MHz
CH 1 + 2003.25 MHz
CH 2 - 2012.25 MHz
CH 2 0 2016.50 MHz
CH 2 + 2020.75 MHZ
CH 3 ~ 2029.25 MHz
CH 3 0 2033.50 MHz
CH 3 + 2037.75 MHz
CH 4 - 2046.25 MHz
CH 4 c 2050.50 MHz
CH 4 + 2054.75 MHz
CH 5 - 2063.25 MHz
CH 5 0 2067.50 MHz
CH 5 + 2071.75 MHz
CH 6 - 2080.25 MHz
CH 6 0 2084.50 MHz
CH 6 + 2088.75 MHz
CH 7 - 2097.25 MHz
CH 7 c 2101.50 MHz
CH 7 + 2105.75 MHz
CH 8 - 2454.25 MHz
CH 8 0 2458.50 MHz
CH 8 + 2462.75 MHz
CH 9 - 2471.25 MHz
CH 9 c 2475.50 MHz
CH 9 + 2479.75 MHz
CH 10 - 2487.75 MHz
CH 10 c 2492.00 MHz
CH 10 + 2496.25 MHz
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M BROADCAST CARRY-CODER
MICROWAVE User Manual
WWII/WIN SERVICES, INC.
3.5 Setting Transmitter Output Power
The RF power is set through the following menu:
RF OUTPUT POWER
OFF LOW MID HIGH MAX
The following table gives the RF power (real average COFDM power) corresponding to each setting, accompanied by the resulting
power supply consumption :
Choice RF Power Power Consumption
OFF Muted Low (about 30 W)
LOW 50 mW Low (about 30 W)
MID 100 mW Low (about 30 W)
HIGH 7 250 mW Normal (about 40 W)
MAX 1 W Normal (about 40 W)
\\ I / When the CARRY-CODER is close to the receiving antenna (< 25m) you can try to reduce the RF output power to
g MIN or MID level. It saves the batteries and can improve reception (avoiding receiver overload).
3.6 Setting Transmission Mode and Robustness
The CARRY-CODER ll includes 3 pre—defined modes, characterized by defined transmission robustness.
These 3 pre—deflned modes have been configured to provide the best trade—off between transmission robustness, video quality and
end-to—end delay for typical applications of the CARRY-CODER.
These modes can be selected through the following menu:
ROBUSTNESS
LOW MID HIGH
The detailed characteristics of these modes are:
Mode (Tx Robustness) LOW MID HIGH
COFDM Guard Interval 1/16 1/8 1116
COFDM Constellation 64QAM 160AM QPSK
COFDM Code Rate 112 1/z 1/2
Video bit rate (Mbps) 15.0 11.0 r 4.9
Audio bit rate (kbpslchannet) 192 128 128
Resolution 720 x 576 720 x 576 720 x 576
GOP structure IP IP IBBP
GOP size 12 12 12
End to and delay (ms) 100 ms 100 ms 140 ms _
\ | // When changing to the < HIGH > robustness condition, take the following steps: (1) Select < HIGH > mode, then press
‘ < OK >; < 2 > wait for the system to re-initialize then press < OK > once again.
6051397800 Rev A Page : 13
BMS figfigfifl CARRY-CODER
U M /
lewwvw SERVICES, INC. ser anua
The following table suggests which (factory defined) robustness mode to use certain applications:
Mode (Tx Robustness) Preferred applications Characteristics
' Studio Short transmission range.
LOW . Maximum video quality.
News, sports, entertainment. Medium transmission range.
MID High video quality,
Mobile & airborne transmission (with. Long and/or difficult transmission.
HIGH walls or buildings in the path. Normal video quality.
\ | / The operator can define specific operating parameters (compression and transmission) via the EXPERT mode. When
\ the CARRY-CODER II is in the EXPERT mode, the “Robustness" menu is disabled and the 3 pre-defined modes are
replaced by a message saying: “Expert Config".
3.7 Recalling and Saving Operating Configurations
The CARRY-CODER II provides the operator with the ability to save and recall 8 user-defined presets (configurations). These
configurations are non-volatile (saved in an EEPROM) and are not lost when the system power is switched off.
Each configuration contains all of the CARRY-CODER operating parameters, so that recalling a user-defined configuration will
restore the system exactly in the same state as when it was saved
Preset (stored) configurations are recalled using the following menu:
RECALL CONFIGURATION
1 2 3 4 5 6 7 8 9
To recall a configuration the user should select one of the preset memories, as above, then press < OK >.
Custom configurations are saved to memory using the following menu:
SAVE CONFIGURATION
1 2 3 4 5 6 7 B 9
To save a configuration the user should first set the appropriate operating parameters to the desired state, then select one of the
preset (configuration) memories. In the following example, preset memory 2 is selected:
SAVE CONFIGURATION
1 2 3 4 5 6 7 8 9
Then, press < 0K > to save the configuration to the selected preset (memory): The Menu Edit mode is completed.
SAVE CONFIGURATION
1 2 3 4 5 6 7 8 9
a Be careful when recalling configurations: If a preset configuration includes RF OUTPUT POWER active, the CARRY-
CODER lI finishes ts initialization and transmits on the RF frequency that is saved in memory! In order to follow
accepted practice and to avoid unwanted transmission, good practice reoommends that the preset configurations are
saved with the  setting in the < OFF > condition.
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MICROWAVE
User Manual
WMMNWWV SERVICES, INC.
3.8 Setting Video Input Parameters and Video Mode
The video input type is set through the following menu :
VIDEO INPUT
CVBS YUV SDI ASI
The operator can choose:
- CVBS : Composite Video Baseband Signal
. YUV: Component video
- SDI: Serial Digital Video
. ASI: Transport
\\ I /,
\ If there is no signal on the selected input, the CARRY»CODER Il displays a “No video" warning message and will not
transmit“
The video input standard is set through the following menu :
VIDEO MODE
PAL NTSC
The user can choose between :
a PAL (625 lines, 50 HZ)
- NTSC (525 lines, 60 Hz)
6051397800 Rev A Page : 15
M BROADCAST CARRY-CODER
MICROWAVE User Manual
WINWIIWVW SERVICESLINC.
3.9 Setting Audio Input Parameters and Audio Level
The audio input mode is set through the following menu :
AUDIO INPUT
ANALOG AES SDI
Operator choice includes:
- ANALOG: analog audio (line level)
- AES: digital audio (AES/EBU format)
- SDl: (to be enabled)
The Operator can adjust the left and right audio level from —10 dBu to +4 dBu, via the following menus :
AUDlO LEVEL LEFT
+ 3 dBu
AUDIO LEVEL RIGHT
— 6 dBu
For instance, setting a value of—6 dBu means that the CARRY-CODER II is adjusted for a nominal input level of -6 dBu. This
ensures headroom for AD (analog-to—digital) conversion of approximately 18 dBFs (relative to full scale).
When the nominal audio input level is below the value that is set, the system will operate correctly, but the signal—to-noise ratio will
be degraded and the nominal audio output level on the receiving side will, in like manner, be low.
If the nominal audio input level exceeds the set value, expect digital clipping to occur.
a If the nominal audio input level exceeds the absolute maximum value of +4 dBu, the audio signal will be heavily
clipped and there will be significant loss of audio quality.
3.10 Configuring Data Input (RS-232)
The CARRY~CODER II provides an RS—232 input port that can be used for asynchronous user data transmission (i.e. for sending
the transmitters GPS-derived location data to a receiver tracking antenna system).
The RS—232 input is configured through the following menu:
DATA PORT BAUD RATE
1.2 4.8 9.6
3.11 Configuring Transmission privacy
The CARRY-CODER II offers the choice of encrypting the transmitted signal in order to ensure the privacy of the link. This feature
is controlled through the following menu:
ENCRYPTION
OFF ENTER PlN
To activate signal encryption, the operator selects this menu function then presses < 0K > to enter the Menu Edit mode. This
operation uses a 6 digit encryption codet Both the transmitter and the receiver must have the same PIN encryption code in memory.
if not, the DC lI receiver will indicate : the receiver will demodulate the signal, but it will not provide valid
audio, video or data output. Once an encryption code is stored, the operator cannot read the setting of the code: if the code is not
on record, the operator must change to a new encryption code or set Encryption to < OFF >.
6051397800 Rev A Page : 16
BROADCAST CARRY-CODER
MICROWAVE
WWMMIWW SERVICESLINC. User Manual
a The PIN code is only visible when you enter it. If you forget the PIN code of one device, the simplest solution is to
enter a new PIN code for both the transmitter and the receiver. All six digits set to < 0 > result in no encryption
The (first generation) CARRY-CODER I (CC I) and the DECODER I (DO I) receiver uses four digit PIN encryption. When the
CARRY-CODER II transmitter is used with the DE-CODER I receiver, the CARRY-CODER II encryption is compatible if the PIN
encryption setting has the first two PIN digits set to <0> (ice., PIN setting <001234> on the CC II or DC II will work with PIN setting
<1234> on the CC I or the DC I>.
6051397800 Rev A Page : 17
BMS 353335523: CARRY-CODER
U M I
VWWWWWV SERVICES, INC. ser Elma
4. USING EXPERT MODE
The CARRY-CODER II has two modes of operation. (1) The NORMAL mode provides the operator with control of system functions
that are needed in routine portable camera situations. Section 3 of this manual describes these functions. including three factory
preset configurations. (2) The EXPERT mode enables the operator to selectively adjust key (audio and video) compression and
COFDM transmission parameters.
A The EXPERT mode should be used carefully because specific parameter settings are required to ensure
proper operation of the system. This mode should be reserved to advanced users.
The expert mode is activated through the following menu :
USER MODE
NORMAL EXPERT
The Expert Mode gives access to the expert audio-video and COFDM parameters that are described in the next sections.
4.1 Expert audio-video parameters
Recommendations
The video quality mainly depends upon the allocated video bit rate and is closely linked to picture resolution and Group Of Picture
structure,
The following table describes recommendations for realistic combinations for video encoding parameters :
Video Bit Rate GOP structure Resolution Video qualitLi Typical end-to—end Delgy
23 Mb/s IBBP 1/2 or 2/3 Low Apgoximately 140 ms.
3-5 Mb/s IBP or IBBP 2/3 or 3/4 Medium Approximately 100 ms.
58 Mb/s IBP or IBBP 3/4 or 1/1 High Approximately100 rns.
8-11 Mbls lP 1/1 l-flgh Mroximatejy 100 ms.
11-15 Mb/s l or IP 1/1 Maximum Approximately 100 ms.
Other combinations can be derived by the operator using the expert video parameters that are described below:.
Resolution (D11
RESOLUTION
1/1 “A 2/3 1/2
This parameter controls digital picture resolution (pixels per line) used for MPEG—Z encoding. A high MPEG-2 encoding Bit rate
provides greater resolution for the best video quality. A low MPEG-Z encoding Bit rate provides lower resolution, reducing the
quality of the picture. Decreasing the resolution setting is useful for a low encoding Bit rate in order to reduce Pixelization when
dealing with highly detailed fast moving scenes.
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WWW SERVICES, INC.
GOP Structure
GOP STRUCTURE
I IF’ lBP lBBP
This parameter controls the structure of picture groups used in the MPEG-2 encoding process. These groups are based on three
possible picture types:
. l: lntra-frames (completely encoded).
. P: Predicted-frames (using motion estimation).
- B: Bi-directionally estimated frames (using motion estimation).
This parameter has a direct affect on video encoding delay. For a given Bit rate:
. lBBP and IBP frame modes offer good video quality in difficult transmission conditions.
. IP frame mode offers a good compromise between video quality and “near-Iine-of-sight" conditions.
. I-frame mode offers the same encoding delay as IP mode, with high Bit rates to ensure the greatest video quality.
GOP Length
GOP LENGTH
6 12 18 24
This is a secondary parameter involving a trade—off between video encoding efficiency and transmission error tolerance. A high
value slightly improves the video quality at the expense of an increased worst—case recovery time required by the MPEGZ decoder
when a transmission error occurs.
The value is expressed in terms of full frame pictures. The typical value is 12.
4.2 Expert COFDM parameters
You can find some information about COFDM modes characteristics in Annex A.
The COFDM mode is controlled by adjusting certain COFDM parameters, described below.
Constellation
CONSTELLATION
QPSK 1GQAM 64QAM
This represents the constellation scheme that is used to individually modulate each sub-carrier of the COFDM signal.
The characteristics corresponding to the 3 possible choices are summarized in this table :
Constellation Nb of points Nb of bits Relative
per Sub-carrier Bit rate
QPSK 4 2 x 1
1 SQAM 16 4 x 2
64QAM 64 6 x 3
Guard Interval
GUARD INTERVAL
1/32 1/16 1/8 VA
The Guard interval corresponds to the idle time that exists between each COFDM symbols, in order to avoid inter-symbol
interference in a Multipath environment. Guard interval is expressed as the ratio of the idle time divided by the useful part of the
COFDM symbol.
6051397800 Rev A Page 2 19
B ROADCAST
MICROWAVE
W'WVIMMMI SERVICES, INC.
CARRY-CODER
User Manual
5. INPUT/OUTPUT CHARACTERISTICS
5.1 Composite video (CVBS)
Type Composite Video Baseband Signal (CVBS)
Systems NTSC 525 lines / 60 Hz / Fox = 3.58 MHZ
PAL 625 lines / 50 Hz / Fsc = 4.43 MHZ
Standard lTU-R BT 470-6
Impedance 75 Ohms
5.2 Component video (YUV)
Type YUV (formerly Y / Pb / Pr)
Systems NTSC 525 lines / 60 Hz
PAL 625 lines / 50 Hz
Standard lTU-R BT 470-6
Impedance 75 Ohms
5.3 Analog audio
Type Balanced Line
Channels 2 separate channels (Left and Right)
Nominal input level Adjustable from —10 dBu to +4 dBu (0 dBu = 775 mV)
Headroom 12 dB (analog) — 18 dBFs (digital)
Sampling frequency 48 kHz — 20 bits
Frequency response 30 Hz — 20 kHz (+/- 1dB)
Signal-to-Noise Ratio 65 dBA
Diaphony 60 dBA
Total Harmonic Distortion < 0.1 % @ 1kHz
Impedance > 10 kOhms
\ I //
between the +/- lines of balanced audio conductors.
5.4 Data input
Type RS-232~DCE
Possible Bitrates 9600, 4800 and 1200 bauds (selectable)
Format N, 8, 1 (1 start bit, 8 data bits, 1 stop bit, no parity)
Protocol None (no XON/XOFF)
Q If a low impedance input (600 Ohms) is required, the user can make a specific interface cable with 600 Ohm resistors
9 Since the RS-232 port of the CARRY~CODER is of DCE type, RS-232-Rx is an output and RSZSZ-Tx is an input (as
specified by the X21 standard). So, the user data source has to be connected to the RS-232-Tx pin of the CARRY—
CODER.
5.5 Remote control port
Type RSZ32
Bit rate 9600 Bps
Format N, 8, 1 (1 start bit, 8 data bits, 1 stop bit, no parity)
Maximum cable length 100 m
Format and protocol Proprietary
g It is recommended to use a shielded D89 cable in order to increase reliability.
6051397800 Rev A
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WADCAST CARRY-CODER
MICROWAVE User Manual
WWI/MIMI]! SERVICESLINC.
5. RF output
Type S-band
Frequency range 1.99 to 2.50 GHz
Channel bandwidth 8/7/6 MHz
Format COFDM (2K carriers)
Standard ETS 300 744 (DVB-T)
Output power 50 mW, 100 mW, 250 mW and 1W (selectable)
Shoulders at +/- 4.2 MHz > 30 dB for 1W
> 35 dB for 250 mW or less
Harmonic and spurious < -60 dBc (DC to 6 GHz)
In-band ripple < +/- 1dB
Return Loss 18 dB (typical)
Impedance 50 Ohms
Connector N - Female
A Never use the CARRY-CODER without 50 Ohms load or antenna properly connected to the RF output,
since this could damage the RF output stage.
\\ I /, The system can operate with several COFDM signals located on 8 MHz adjacent channels. When analog
‘ transmissions are active in-band, it is recommended to leave a free 8 MHz channel between COFDM
signals and the active analog signals.
5.9 Power supply input
The CARRY-CODER can be powered either with a battery pack or through a 4 pins connector. This enables the use of an external
power source such as a battery belt or any appropriate power supply (+11 to 32 VDC - 4A).
6051397800 Rev A Page : 21
ms BROADCAST CARRY-CODER
MICROWAVE User Manual
WNW/WNW SERVICES, INC.
6. WARRANTY AND RETURN TO FACTORY
The CARRY-CODER is warranted for a 2 years period, starting from delivery date
in case of CARRY-CODER failure, please use the following process:
First have a look at the troubleshooting section of this manual in order to see if an immediate solution can be found.
Before contacting BMS with questions about units, be sure to have the following information with you so we will be better
able to help you.
Serial Number
Description and special
customer related
specification.
0 Customer Name
. Contract Number
- BMS Model Number
. Serial Number
. Description of problem with as much detail as possible.
. Name of person to contact who might have further information
on the failure,
. Contact information such as phone number and/or email
address.
. Return Information
Contact BMS technical support.
if the technical support cannot solve the problem, please send the unit at your expenses to BMS. Include all necessary
explanations about the failure. Always use original packing for transport.
Warranty position will be established upon receipt of inoperative equipment. if equipment is confirmed defective and is the
responsibility of BMS, repair action will be initiated immediately. When the malfunction is determined to be the
responsibility of the user, repair will be initiated after confirmation with the user’s buying authority.
BMS will send back the unit at its expenses.
Q There are no user serviceable parts inside the CARRY—CODER. Trying to open the device without prior authorization
fr
om BMS will cause the warranty loss.
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M §T2£3§231 CARRY-CODER
wwwmnmrv SERVICES, mc. User Manual
7. CONTACT INFORMATION
Broadcast Microwave Services, Inc.
Phone: +1.858.391.3050
Fax: +1.858.391.3049
Shipping address: 12367 Crosthwaite Circle
Dock 10
Poway, CA 92064
Website: httg://www.bms-inc.com
Email: suggort@bms—incicom
sales@bms-inc.com
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mMM/www smvrcssj iNC.
ANNEX A : COFDM modes characteristics
The main COFDM modulation parameters are :
Number of sub—carriers (about 2.000 in our case)
Guard interval (GI) duration between COFDM symbols
Constellation scheme used for individual sub—carrier modulation
Data redundancy code rate used for error correction
The transmission robustness mainly depends on constellation scheme and code rate.
The following table gives the useful transmission bit rate for each COFDM mode. It also specifies the Carrier-to-Noise operation limit
in the case of a perfect Iine—of—sight (Gaussian) channel and in the case of a typical multipath terrestrial (Raylegh) channel.
Constellation-[— Code "— Useful Bitrate (Mb/s _'CIN for perfect C/Nfortypical
Scheme l__Rate GI=1I4 Gl=118 Gl=1l16 1_GI=1I32__r' channel (dB) channel(dB)
1/2 I 4,98 5,53 5,85 6,03 31 5.4
2/3 6,64 7,37 7,81 _;8-04 4.9 g 8.4
QPSK 3/4 _ 7,46 8,29 8,78 L 9,05 4 5.9 __, 10.7
5/6 . 8,29 9,22 9,76 ~~10,05~ L 6.9 ‘t',,_' , «1311
7/8 8,71 _ 9,68 10,25 10,56 : 7.7 , 16.3
L_ 1/2 9,95 fl 11,06
_ 213 13,27 14,75
16-QAM ,_ 3/4 T“ »
G4—QAM .
L_5/6 24,88 $27,155 330/154— 1953, __
7/8 26,13 29,03 30,74 31,67 20.1 , ,
u ,
g Grey lines correspond to COFDM modes which have few interest for our application. These modes either
provide unnecessary bitrate (> 15 Mb/s) or don’t offer the best performances for a given bitrate.
\l//
Q We can notice that a low code rate (= high data redundancy) is necessary to insure a good efficiency in
multipath environment.
The guard interval determines the maximum echoes length dispersion that the system can tolerate. From this figure, we can
estimate the maximum transmission range that the system might offer for a typical terrestrial channel (with adequate RF power).
The following table summarizes the results that come out from the 4 possible guard inten/al values :
Guard Interval Guard Interval Maximum echoes Maximum transmission
Ratio Duration (us) dispersion (km) distance (km)
1/32 7 2.1 2-6
1/16 14 4.2 4-12
1/8 28 8.4 8-24
1/4 56 16.8 16-48 ‘
\I/
‘g Max1mum transmission distances can be increased when using directive antennas, but signal break-ups
can nevertheless occur when long echoes occasionally enter into the receiving antenna diagram.
6051397800 Rev A Page : 24

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