DTC Communications PDTX250S COFDM Transmitter User Manual palladium tx4c

DTC Communications Inc. COFDM Transmitter palladium tx4c

Manual

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Document ID610225
Application IDXJ16wR4NR6UmMhI9lSbS5w==
Document DescriptionManual
Short Term ConfidentialNo
Permanent ConfidentialNo
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Document TypeUser Manual
Display FormatAdobe Acrobat PDF - pdf
Filesize131.64kB (1645483 bits)
Date Submitted2005-12-10 00:00:00
Date Available2005-12-10 00:00:00
Creation Date2005-12-06 21:14:09
Producing SoftwareAcrobat Distiller 5.0.5 (Windows)
Document Lastmod2005-12-08 14:04:17
Document Titlepalladium_tx4c
Document CreatorPageMaker 7.0
Document Author: Charles Warrington

COFDM Transmitter
Model Pd-TX-100 100 mW Output
Model Pd-TX-250 250 mW Output
DTC COMMUNICATIONS, INCORPORATED
how to contact DTC
copyright notice
warranty
For operator and troubleshooting information,
customers are encouraged to refer to the
details in this manual. For additional
clarification or instruction, or to order parts,
contact DTC.
Copyright © 2005
DTC warrants its manufactured components
against defects in material and workmanship
for a period of two (2) years, commencing on
the date of original purchase.
Customer Service is available Monday through
Friday between the hours of 9:00 AM and
5:00 PM EST at:
Tel: 603-880-4411
Fax: 603-880-6965
Website: www.dtccom.com
Email: info@dtccom.com
486 Amherst Street
Nashua, New Hampshire 03063
DTC Communications, Inc. All rights
reserved. No part of this document may be
reproduced, transmitted, transcribed, stored
in a retrieval system or translated into any
language or computer language, in any form
or by any means, including but not limited to
electronic, magnetic, mechanical, optical,
chemical, manual or otherwise, without the
prior written permission of DTC
Communications, Inc.
disclaimer
The information in the document is subject to
change without notice. DTC makes no
representations or warranties with respect to
the contents hereof, and specifically disclaims
any implied warranties of merchantability or
fitness for a particular purpose. DTC reserves
the right to revise this publication and to
make changes from time to time in the
content hereof without obligation of DTC to
notify any person of such revision or changes.
trademarks
Products manufactured by others that are
approved for use with DTC equipment are
warranted for the manufacturer’s warranty
period, commencing from the date of shipment
from DTC.
FCC information
The following information is provided as a
service to our law enforcement customers who
require a Part 90 station license for video
surveillance operations.
You will need to provide two documents:
• Form 600 (the application form)
• Form 159 (the filing fee form)
Forms can be obtained from the FCC on their
website at:
www.fcc.gov
Trademarks of DTC Communications, Inc.
include:
You can also contact the FCC using their FAX
back service at: (888) 418-3676
• DTC
• MiniPIX®
Additional instructions are available by
telephone at: (888) 225-5322
• DynaPIX®
The filing fee form is returned to:
Other product names used in this manual are
the properties of their respective owners.
Federal Communications Commission
1270 Fairfield Road
Gettysburg, PA 17325-7245
DTC COMMUNICATIONS, INC.
PN OP1920303 REV 2
TABLE OF CONTENTS
manual conventions
NOTE: Describes special issues you should
be aware of while using a particular function.
WARNING: Calls out situations in which
equipment could be damaged or a process
could be incorrectly implemented, but in
which operator safety is not a factor.
TIP: Describes application hints.
Quick Start ............................................................................ 4-5
Complete These Steps ................................................................ 4
Thermal Issues ........................................................................... 4
Introduction ............................................................................... 6
Operation ............................................................................... 7
Using your Palladium Transmitter ................................................ 7
Changing your Transmitter Configuration .................................... 7
Components ........................................................................... 8-9
Programming ...................................................................... 10-15
System PC Controller Application Software .............................. 10
Transmitter Control Application ................................................. 11
Specifications ..................................................................... 16-17
Warranty
............................................................................. 18
Contact Us ............................................................................. 19
RF EXPOSURE STATEMENT
A separation distance of at least 20 cm must be
maintained between the antenna and the body of
the user or nearby persons.
NOTE: This device is for occupational use
only. Occupational users are those persons
who are exposed as a consequence of their
employment, provided these persons are fully
aware of and exercise control over their
exposure.
DTC COMMUNICATIONS, INC.
QUICK START
Complete these steps:
Palladium Transmitter, Top View
CAMERA
MICROPHONE(S)
1 Connect the transmitter antenna to the SMA connector on the top of the
Palladium unit.
2 If you plan to use audio, connect one or two microphones to the Audio 1
and/or Audio 2 LEMO connectors.
3 Connect power and video input via the Multi I/O cable to the 6-pin
Hirose connector:
a Attach your camera video input (75 ohm composite video source in
PAL or NTSC) to the Multi I/O cable BNC connector.
b Apply the necessary power to your camera and turn ON.
c Attach a 12 VDC power source (such as the supplied battery pack or
the AC power adapter) to the Multi I/O cable via the Molex connector.
The input voltage range is from 10 to 18 VDC.
ANTENNA
NOTE: Eight Channel LEDs are located under the sliding control
panel door. If all 8 green LEDs are flashing, this indicates that your
battery source is low.
9 AA
BATTERY
PACK
Typical Wiring Configuration
DTC COMMUNICATIONS, INC.
Thermal Issues
Higher power Palladium Pd-TX-250 Transmitters feature
mounting tabs for convenient mounting and heat
dissipation. If your Palladium Transmitter has these tabs,
proper heat sink mounting is recommended for optimal
performance. An optional heat sink can be purchased
from DTC. See page 8 for heat sinking instructions.
QUICK START
4 Slide the control panel door open (to the right).
5 When power is applied, the transmitter will power-up to its last state.
Ensure that the green RF LED turns ON indicating the unit is
transmitting. If needed, push the RF button to begin transmitting.
The channel number LED also turns ON, representing the most recent
channel setting from the last time the transmitter was used.
6 If you need to change the operating channel, press the CONFIG button
to cycle through the 8 available channels indicated by the channel
number LEDs. Refer to the Programming section on page 10 for more
information on channel settings. When you change the channel
configuration, the RF transmission is automatically switched OFF to
prevent accidental interference. When you have selected the channel
you need, push the RF button to start transmitting again. The RF LED
will turn ON.
NOTE: A red ALARM LED indicates that no video is connected.
Your Transmitter is now operational. Confirm its signal with your
Palladium Receiver.
Optional Data and
Chaining Connector
Palladium Pd-TX-100 Transmitter,
Front View
WARNING: Do not apply power to the transmitter unless an antenna
or non-radiating load is connected to the Antenna SMA connector.
NOTE: The RF switch should remain ON during normal use. The RF
automatically shuts off during programming to prevent accidental
transmissions on unintended frequencies.
DTC COMMUNICATIONS, INC.
INTRODUCTION
The Palladium Series of digital video transmitters provide exceptional video
quality in high multipath environments. They are ideal for use inside
buildings, in urban areas, and in other applications where multipath
would normally cause video tearing or breakup.
All Palladium Series transmitters are designed for spectrum-efficient 2.5
MHz channel spacing. Approximately 400 carriers are used to transmit
video and two channels of voice and data. Palladium transmitters may be
located on adjacent channels without a guard band. AES 128-bit
encryption ensures users of secure communications.
The Palladium 100 is a small transmitter with a 100 mW RF power output.
This unit is ideal for concealments and shorter range robotic and UAV
applications. The package is only 7.5” x 2.5” x 0.75”. Power consumption is
6 Watts. All connections are conveniently located off the ends of the unit.
Many users will want to power this device with disposable batteries.
Palladium Pd-TX-100
100-Milliwatt Digital Transmitter
The Palladium 250 incorporates an internal power amplifier bringing total
power output to 250 mW. Height and width are identical to the Palladium
100, with the depth of the unit increasing an additional 0.5”. The
Palladium 250 is ideal for many surveillance applications and short to
mid-range robotic and UAV applications.
Both versions are built out of rugged milled aluminum housings. The
Palladium 250 features mounting tabs for convenient heatsinking (page 8).
NOTE: Use only Lithium batteries with this device.
DTC COMMUNICATIONS, INC.
OPERATION
Using your Palladium Transmitter
Follow the instructions given in the Quick Start section on pages 4-5.
When power is first applied to the Palladium, the unit reverts to the last
used channel and RF (ON/OFF) state. One of the green channel LEDs will
turn ON indicating the active channel. The Alarm LED may be ON, which
indicates that there is no active video input.
NOTE: Since the Palladium transmitter always returns to the last
configuration on power-up, the unit should always be deployed with
the RF switch ON. Therefore, once deployed, control of the unit must
be restricted to applying and removing power. See the Quick Start
(pages 4-5), and Heatsinking (page 8) for more installation guidance.
Changing your Transmitter Configuration
The Palladium Transmitter can store up to 8 different configurations,
which can be selected on the front panel. Each of these configurations can
be programmed into the Transmitter with the supplied DTC Programming
Software and a Windows PC. Refer to the Programming section on page 10
for more information.
To cycle through your preconfigured channels press the CONFIG button
once to advance to the next setting. By default, the Palladium will turn
OFF the transmitted signal while you are changing channels. This is to
prevent accidental interference. Push the RF button after channel selection
to resume RF transmission of your video image.
Palladium Pd-TX-250
250 Milliwatt Digital Transmitter
with Mounting Tabs
DTC COMMUNICATIONS, INC.
HEAT SINKING
When to Use a Heat Sink
Mounting
Screws (4)
The Palladium 100 does not require heat sinking in normal service. The
Palladium 250 should be attached to a heat sink or heat sinking surface if
the unit is to be installed in an enclosure, or in deployments where the
ambient temperature could exceed 50oC.
Typical Palladium Operating Temperatures
BEST: Fins
Vertical Away
From Wall
BEST: Fins
GOOD: Fins
Vertical Away Vertical Away
From Wall
From Wall
A wide range of variables can affect the temperature of electronic devices
including ambient temperature, air flow, heat sink and mounting considerations. In a typical test performed at room temperature, the Palladium
250 without a heatsink has been observed to have a baseplate operating
temperature of 40oC (104oF). The Palladium 100 has been observed to
have a baseplate operating temperature of 37oC (99oF) in a similar test.
Heat Sink Installation
To install the heat sink, complete the following steps:
1. Align the transmitter and heatsink, with the back of the transmitter
mating with the front, flat surface of the heatsink.
GOOD:
Fins Up
NEVER: Fins
Horizontal
2. Secure the heatsink with four (4) 6-32 x 1” screws. Install the screws
from the transmitter side.
NEVER: Fins
Down
DTC COMMUNICATIONS, INC.
3. Make sure there is good contact between the transmitter and the
heatsink. They should be mounted flush to one another.
COMPONENTS
Channel LEDs These green LEDs, numbered 1 through
8, indicate the channel number currently selected.
Each channel represents a set of preconfigured
settings.
Muiti I/O Connector (6-pin Hirose)
This connector provides
connections for the DC power input,
programming, and 75 Ohm
composite video signal.
Audio 1 and 2 Connectors (LEMO)
These connectors provide the
microphone connections to the
transmitter. Either one or two
microphones can be used with the
Palladium Transmitter.
Transmitter Antenna Connector
(SMA) This connector attaches to
the transmitter antenna and carries
the RF output signal. Always ensure
the transmitter antenna is attached
before operating the Palladium
Transmitter.
ALARM LED This red LED indicates a valid video signal
is not present.
RF LED This green LED indicates that the RF
output is ON.
RF Button This membrane switch toggles ON/OFF the
RF output. Normally this should be left ON.
CONFIG Button This membrane switch cycles through
the eight channels.
DTC COMMUNICATIONS, INC.
PROGRAMMING
System PC Controller Application Software
Advanced control of the system is available by using PC control applications. Typically users may want to customize the default configurations to
control settings such as frequency, scrambling keys, modulation
parameters, and video resolution.
The transmitter is controlled by the application DTC_tx_ctrl.exe available on the CD delivered with the product.
A PC is required with two RS232 Serial COM ports to control both a
transmitter and receiver simultaneously. Where changes are to be made to
either a transmitter, or a receiver, at different times, a PC with a single
RS232 Serial COM part can be used.
Installation of the two control programs is as simple as copying them from
the CD to a suitable location on the PC. No install shield routine is
launched. Note that the controllers generate their own log and
initialization files, so it is best to create a dedicated directory for these
applications, perhaps with links to the applications from the desktop of
the PC.
Getting Started
10
DTC COMMUNICATIONS, INC.
•Use the supplied cables to connect the chosen COM port(s) of the PC to
unit(s) to be configured.
•Launch each application in turn by double clicking or using the run
command.
•Connection with a transmitter should be automatic, but the user can
force selection of the correct COM port using the drop down, followed by
the Connect button.
•Errors may appear during the connection process if the PC is unable to
automatically ascertain which unit is connected to which COM port.
PROGRAMMING
Transmitter Control Application
Output Frequency (MHz)
The transmit frequency can be changed by entering the new desired
frequency in this field. Values outside the range supported by a particular
transmitter type will be rounded to the highest or lowest supported
frequency as appropriate. The resolution of the transmit frequency is
complex and resolved to the closest achievable within the constants of the
supported step sizes of 1MHz, 1.6667 MHz and 2.5 MHz.
(your frequency)
Modulation Output
This control is used to turn on and off the RF output. After a configuration
change, the output always reverts to OFF. It must be ON for operation.
OFF
Modulation FEC
The default FEC is 2/3, however improved range operation can be achieved
by selecting FEC 1/3. FEC 1/3 will improve signal range by 3dB. However
FEC 1/3 reduces link capacity to 1.2Mb/s therefore reducing picture
quality.
FEC Link Bitrate Sensitivity 2/3 2.4Mb/s: -99dBm,
1/3 1.2Mb/s: -102dBm
2/3
1/16
Modulation Guard Interval
The Guard Interval is fixed at 1/16 in current software releases.
Modulation Bandwidth
For the Palladium transmitter products, the modulation bandwidth is fixed
at 2.5MHz.
COFDM Mode
The COFDM mode can be changed between QPSK and 16QAM. QPSK is
the default mode and will give the strongest most rugged RF link
performance. Selecting 16QAM reduces the link performance by 5dB but
improves the link data throughput, giving significantly better video quality.
2.5 MHz
QPSK
Default values are shown in red.
DTC COMMUNICATIONS, INC.
11
PROGRAMMING
(As Desired)
Output Attenuation
This control can be used to make minor adjustments to the output power
level, but in normal operation should not be changed from factory settings.
NTSC
Video Input
This control is used to select the composite video input standard. Options
are PAL, and NTSC both with and without 7.5 IRE pedestal.
1.1
528
Horizontal resolution
The video coding resolution can be selected from 704, 528, 480 and 352
pixels. Changing the horizontal resolution to lower values will make the
coded picture softer.
Care should be taken to match the horizontal resolution to the resolution
of the camera connected to the transmitter; this will give best image
results.
OFF
Audio Encoder
The Audio can be turned on and off with this control. Audio is OFF by
default, but there are several audio modes that vary from very high quality
to speech grade that can be selected with this control. Enabling Audio
encoding will degrade the video quality, because some of the available data
capacity is diverted away from video to audio. Selecting high fidelity audio
modes will degrade the video quality more than lower fidelity audio modes.
Default values are shown in red.
12
Video Bitrate
The video bit rate is automatically maximized in each configuration when
Chaining Input is turned off. This control can be used to set the video
bitrate within the constraints of capacity available in the channel, but only
when Chaining Input is set to ON.Chaining CANNOT be enabled on normal
transmitters, and as such video bit rate control is automatic.
DTC COMMUNICATIONS, INC.
PROGRAMMING
Audio Input Level
This control is used to define the audio gain to be applied to the audio
input signal. 0dB is used for line level audio and various options up to
48dB of gain can be applied for microphone inputs.
Unit Name
Future Use.
24 dB
(As Desired)
Sleep Mode
This control allows the unit to be forced into a Sleep Mode where main
functions are disabled, and the power consumption is significantly reduced.
NO
Data
Future use.
OFF
Data Baud Rate
Future use.
1200
Chaining Input
Future use.
OFF
Chain Number
Future use.
Default values are shown in red.
DTC COMMUNICATIONS, INC.
13
PROGRAMMING
(Ch. No.)
OFF
Current Config
This field reports the last loaded configuration number. Note that for the
Palladium transmitter, changes applied after the configuration has been
loaded are saved immediately into the current configuration.
Scrambling
If the AES scrambling option has been purchased for the system in use,
then it is possible to encrypt the link. Scrambling must be enabled at the
transmitter by selecting AES in the scrambling field. At this point the user
will need to ensure that the correct key is in use and this is done by using
Options/Write AES key. The key is 128 bits and is entered as 32 ASCII
hexadecimal characters (0-9 and A-F).
Video Locked (Status Only)
This status information indicates whether the transmitter is successfully
locked to the incoming composite video signal. Unlocked status may
indicate cabling faults, or poor quality incoming video feeds to the unit.
Software Version (Status Only)
This status information describes the version of the software running the
transmitter product.
FPGA Version (Status Only)
Engineering use only.
Serial Number (Status Only)
This status information is the electronic serial number of the transmitter
PCB. This number can be used for upgrades or support.
Default values are shown in red.
14
DTC COMMUNICATIONS, INC.
Chaining (Status Only)
Future use.
PROGRAMMING
Options
Timeouts – password protected access to change timeouts used during
the serial communications between the unit and the controller.
Engineering – password protected access to further diagnostic and
calibration features.
Write License Code – open a further password protected box for entering
license codes for future use.
Change RS232 address – prompts the user to change the units RS-232
address, which can be useful when connecting multiple units together via
a multi drop RS-485 bus for control purposes.
Write AES Key – opens a dialogue box for entering a 128bit AES
scrambling key, as 32 ASCII hexadecimal characters (0…F)
Restore Defaults – restores factory default settings in the transmitter.
Polling Enabled – selecting this option makes the control application
automatically refresh the data presented to the user every few seconds.
File
Load Config – used for loading configuration data to text file.
Save Config - used for saving configuration data to text file.
Change Logfile – opens a standard Windows file save dialog box which
allows the user to change the path and name of the log file generated by
the application.
Exit – exits the control application.
DTC COMMUNICATIONS, INC.
15
SPECIFICATIONS
16
DTC COMMUNICATIONS, INC.
Physical
Unit Dimensions
Pd-TX-100
Pd-TX-250
7.5 x 2.5 x 0.75 in (127 mm x 70 mm x 30 mm)
7.5 x 2.5 x 1.25 in (127 mm x 70 mm x 43 mm)
Environmental
Operational Temp
-10 degrees C to 70 degrees C
Power
Input Voltage
Power Consumption
Pd-TX-100
Pd-TX-250
Fully Operational ~ 6.5 W, Sleep Mode < 0.5 W
Fully Operational ~ 10 W, Sleep Mode < 0.5 W
Control
PC Control Interface
Memory
RS-232.
Ten user-programmable configurations
Video Encoding
Compression Standard
Chrominance Profile
Line Standard
Horizontal Resolution
Vertical Resolution
Video Bitrates
System Latency
MPEG-2 with non-DVB modes
4:2:0
PAL 625 or NTSC 525
704, 528, 480, 352 pixels (528 as standard)
576 (625 lines) or 480 (525 lines)
1Mbps to 10 Mbps
End to end delay of 43 milliseconds
10 to 18 VDC
SPECIFICATIONS
Audio Encoding
Input
Bitrates
Sampling Frequency
THD
Response
Crosstalk
S/N
Stereo or Dual Mono pair
28 kbps to 72 kbps depending on configuration
32 kHz, 16 kHz or 8kHz
< 0.1% max
20Hz to 6KHz, +/- 0.25dB
> 55 dB min
60 dB RMS
Composite Video Input
Standards
Specification
Connector
Composite PAL and NTSC decoding
NTSC (with and without pedestal) or PAL
Rec. ITU-R BT.470-4
Hirose
Eight-bit comb filtering composite decoder
Analog Audio
Analog Audio Input
Nominal Level
+10 dBu
+4 dBu
Data
Baud Rate
Connector
Up to 115 kbaud
LEMO
Scrambling
Scrambling type
COFDM RF output
Output Frequency
Occupied Bandwidth
Power
Connector
COFDM Standard
Fixed key scrambling system
Algorithms offered include AES.
Band Dependent
2.44 MHz
100 mW or 250 mW
SMA
Proprietary, 2.5 MHz channel spacing, OFDM
bandwidth of 2.44 MHz with 400 carriers.
DTC COMMUNICATIONS, INC.
17
TWO YEAR WARRANTY
DTC Communications, Inc. (DTC) warrants its RF transmitting and receiving products to be free from
defects in workmanship or material for a period of two (2) years from the date of shipment unless
otherwise stated.
The liability of DTC, Inc. under this warranty is limited to replacing, repairing, or issuing credit, at
option, for any products, which are returned by the purchaser during such warranty period, provided:
DTC is notified and a Repair Authorization Number is issued by DTC Customer Service within 30 days
after discovery of such defects by Customer.
The defective units are returned to DTC with transportation charged Prepaid by the Customer.
Product damaged in shipment must be reported to and claim forms filed with the Carrier by the
Customer. In shipments to the factory, notice and claim procedures will be initiated by DTC.
DTC’s examination of such products shall disclose to its satisfaction that such defects exist and have
not been caused by misuse, misapplication, neglect, improper installation, improper storage, alteration,
physical damage or accidents.
The warranty shall not apply to microphones, batteries, antennas, crystals or material ordinarily
susceptible to field damage or any accessories of a disposable nature. The warranty shall not apply to
Engineering Prototypes or Customer requested modifications to electronic circuits.
This warranty does not apply to and DTC does not independently warrant items or systems sold by DTC
which are produced by other manufacturers. With respect to such items, the Customer shall look to the
warranty of the original manufacturer and DTC disclaims all warranty, expressed or implied.
Nothing in this warranty, or any statement, brochure, bulletin, or advertisement is to be interpreted as
establishing the suitability of any product for particular application or use. Applications of the product
and the determination of suitability for any application, is the sole responsibility of the Customer.
18
DTC COMMUNICATIONS, INC.
Sales Representatives
CONTACT US
Nashua Main Office Numbers
voice (603) 880-4411
toll free (800) 233-8639
fax (603) 880-6965
Director
State & Local Agencies & International Sales
Michael Demos
Inside Sales
Christine Guzman
direct voice (603) 546-2122
cell (603) 320-3257
jmorgan@dtccom.com
(Nashua Main Office Numbers)
direct voice (603) 546-2217
cguzman@dtccom.com
ME, NH, VT
Federal Sales Manager
Walter Patenaude
International Sales Manager
Dana Crawford
OEM Sales Manager
Ralph Descheneaux
(Nashua Main Office Numbers)
(Nashua Main Office Numbers)
(Nashua Main Office Numbers)
direct voice (603) 546-2161
cell (413) 454-3651
wpatenaude@dtccom.com
direct voice (603) 546-2110
cell (508) 320-7225
dcrawford@dtccom.com
direct voice (603) 546-2119
cell (603) 738-3627
rdeschen@dtccom.com
Director of Federal Sales
John Morgan
(Nashua Main Office Numbers)
direct voice (603) 546-2120
cell (603) 320-3255
mdemos@dtccom.com
(Nashua Main Office Numbers)
REGIONAL SALES MANAGERS
Howard Rich
toll free (888) 819-8570
voice (860) 626-8570
fax (860) 626-8571
NY, MA, CT, RI, PA, NJ, MD, DE,
WV, DC
hrich@dtccom.com
Floyd Flowers
voice (208) 667-5197
fax (208) 676-8107
WA, OR, ID, MT, ND, WY, SD
Joe Parkinson
toll free (800) 952-4914
voice (909) 598-5110
fax (909) 598-3120
CA, AZ, NV, UT, HI, AK
jparkinson@dtccom.com
Gary Nichols
toll free (866) 794-2823
voice (765) 473-8917
fax (765) 473-8920
MN, WI, MI, IA, MO, IL,
IN, OH, KY, NE
gnichols@dtccom.com
Frank Prioli
toll free (800) 246-2610
voice (727) 392-4761
fax (727) 320-0509
FL, GA, AL, MS, TN, NC,
SC, VA
fprioli@dtccom.com
Ed Bryant
voice (903) 725-7229
fax (903) 725-7863
TX, OK, AR,
LA, NM, KS, CO
ebryant@dtccom.com
DTC COMMUNICATIONS, INC.
19
486 Amherst Street • Nashua, New Hampshire 03063 • 603-880-4411
www.dtccom.com

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