Installation and Operations Manual Field-Coder II (FCII) And Field-Coder II With Power Amplifier (FCII-MAX) DOC# 6051420300 REV - February 2007 Broadcast Microwave Services, Inc.
INTRODUCTION The Field-Coder II (FCII) microwave transmitter is portable COFDM transmitter designed for applications that require temporary microwave link. Based on the field proven technology of the BMS Carry-Coder II, the FCII is weather resistant, sturdy, robust, easy to set-up and simple to use. The FCII is a digital transmitter and encoder compliant with COFDM DVB-T specifications. However The FCII by itself is only a 1W transmitter, covering a short range.
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Table of Contents INTRODUCTION........................................................................................................................................... i SYSTEM DESCRIPTION ............................................................................................................................. 1 Configurations of the FCII ......................................................................................................................... 1 FCII Family Components and Accessories ...
List of Figures Figure 1 FCII Architecture Block Diagram.................................................................................................... 1 Figure 2 FCII-AC, FCII, and FCII-MAX Bracket Attachment ...................................................................... 9 Figure 3 FCII-AC, FCII and FCII-MAX Attached Cable Connections ....................................................... 11 Figure 4 FCII Control Panel ..........................................................................
WARNING! RF RADIATION EXPOSURE HAZARD This warning is provided by Broadcast Microwave Services (BMS) Inc. for safety purpose. The following information help to reduce the risk of RF exposure hazard. FCC Limit of RF Exposure According to Federal Communication Commission (FCC), the Maximum Permissible Exposure (MPE) for FR radiation has been set to 1.0 mW/cm2 for the Field-Coder II equipment (OET Bulletin 65).
Estimated RF Exposure for 2 GHz Field-Coder II w ith 5W Pow er Amp 5.0 Power Density, mW/cm^2 4.0 3.0 0 dBi Antenna Max Exposure at 20 cm 2.0 Max Permissible Exposure: 1mW/cm2 5 dBi Antenna Max Exposure at 35 cm 16 dBi Antenna Max Exposure at 120 cm 1.0 30 dBi Antenna Max Exposure at 560 cm 0.0 0 100 200 300 400 500 600 Dis tance , cm Figure 1 Summary In order the keep the RF exposure within the FCC limit, it is necessary to maintain the safe distance from the antenna.
SYSTEM DESCRIPTION The Field-Coder II system is a portable 1W digital transmitter for wireless transmission of video, audio, and user defined private data. Built on the same platform as the field proven Carry-Coder II, the FCII has many of the same features and capabilities. Figure 1 FCII Architecture Block Diagram The FCII supports 2 audio (analog) inputs and one video (CVBS, SDI or ASI) input. The FCII includes an MPEG2 encoder and a DVB-T compliant COFDM modulator.
The FCII-AC is a weatherproof AC/DC power supply that can be used to power both the FCII and the FCII-Max from 110/220 VAC. As a stand alone unit, the FCII is a 1 W digital transmitter. The FCII – MAX will increase the power output to 5W, significantly increasing the transmission range and robustness. Conveniently, the FCIIMAX can also be powered by the FCII-AC.
Accessory Components BMS Part Number BTA-100 Tripod w/ Quick Disconnect head (optional) 8001285903 Mount for Tripod use (included with FCII Accessory Kit) (used on FCII or FCII-AC for Tripod w/ Quick Disconnect head) 7614203040 3/8 - 16 x 5/8” FH Screw ¼ - 20 x 5/8” FH Screw Mounting Plate 290133858 281007105 4414203051 Tripod Transit Case (optional) 250000050 Antenna Options BMS Part Number Horn Antenna (16 dBi Vertical Horn) w/Field-Lock Bracket (quick-disconnect) 8014203005 Horn Antenna (16
Frequency Step 250 kHz Channel Plan Programmable Modulation COFDM (2K carriers) Output Power 50 mW, 100 mW, 250 mW and 1W (selectable) Shoulders at +/- 4.
Table 5 Audio Input Audio Input Parameter Specification Audio Input Analog (Line – Symmetrical) Channels 2 separate channels (Left and Right) Nominal Level Adjustable from –9 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 (+/- 0.5 dB) Signal-To-Noise Ratio 75 dB Total Harmonic Distortion < 0.
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FCII SET-UP with FCII-AC and FCII-MAX The FCII can also be used with the FCII-AC and the FCII-MAX together. Using the brackets (BMS p/n 4414203001) to join the three components, and installing the quick disconnect tripod mounting plate to the bottom of the FCII-AC will speed up field set-up. The FCII-AC should be placed on the bottom of the stack, with the FCII in the middle and the FCII-MAX on the top.
Slip the FCII in between the brackets. Secure the FCII to the brackets using the matching hole set used on the FCII-AC. The FCII should be stacked directly on top of the FCII-AC, not staggered. Tighten all screws. The FCII-MAX power amplifier requires proper heat transfer. The FCII-MAX needs to be on the top of the stack. Use 4 #10-32 screws to secure, but do not tighten, two brackets, one forward, one back to one side of the FCII.
Figure 2 FCII-AC, FCII, and FCII-MAX Bracket Attachment Cable Interconnections To hasten field set-up time, it is advantageous to have some of the interconnect cables already connected. The cable connections between the three components are as follows: The power cable from the FCII-AC to the FCII The power cable from the FCII-AC to the FCII-MAX The RF cable from the FCII to the FCII-MAX, this cable is connected in the field after the Horn Antenna is mounted.
Slide the connector into place and twist connector housing to secure. Repeat for connecting the cable to the FCII. To connect the power cable from the FCII-AC to the FCII-MAX, remove the attached connector cover. Align the proper connector on cable BMS p/n 7314204012 , matching the keys on one side to the grooves on the other. Push the connector in place and twist the connector housing to lock the connector down.
Repeat with connecting the other end of the cable to the FCII-MAX. Figure 3 demonstrates how the cables should look when all three components are attached. Figure 3 FCII-AC, FCII and FCII-MAX Attached Cable Connections This completes the FCII preparation for quick field set-up for this configuration. Please proceed to Sections 0 and Error! Reference source not found. to continue with the initial set-up for the FCII.
USER INTERFACE All the transmission parameters are configured through the control panel. Figure 4 FCII Control Panel Figure 5 FCII Status Screen Pressing any of the menu controls will bring up the menu screens. Use the Ï and Ð buttons to scroll through the menus. Pressing OK on a menu screen will allow changes to that menu’s parameters. The Î and Í buttons move the cursor.
What follows is a list of all the FCII menus, with brief description and instructions for use. Table 6 Normal Mode User Menus Normal Menu Description How to Use 2454.25 MHz FREQUENCY 2454.25 MHz RF Frequency Displays RF Transmit Frequency. To set the RF Frequency press OK. Use the Ï and Ð buttons to change the value. The Î and Í buttons move the cursor. Press OK when finished. 2454.
Normal Menu 2454.25 MHz DATA PORT MODE CCII CCI 2454.25 MHz Scrambling off enter PIN 2454.25 MHz Channelized System OFF ON 2454.25 MHz USER MODE normal expert Description How to Use Auxiliary Data Port Mode Configure the Aux. RS232 Port To change the data port mode, use the Î and Í buttons to navigate choices. The current choice is underlined. Press OK to set.
NOTE: The Expert Menus should only be configured by advanced users. Improper configuration can result in transmission failure. Table 7 Expert Mode User Menus Expert Menu Description How to Use Video Bitrate Controls Picture Resolution. Larger values increase the resolution and increases the time between picture updates. Smaller values decrease resolution and decreases the time between picture updates. This is an EXPERT Level parameter To change the video bitrate, press OK.
Expert Menu Description How to Use 2454.25 MHz Scrambling Type A B Scrambler Type Type A – Most Common Type B – Rare This is an EXPERT Level parameter To set the Scrambler Type, use the Î and Í buttons to navigate choices. The current choice is underlined. Press OK to when finished. 2454.25 MHz Video PID 300 Video Packet Identifier This is an EXPERT Level parameter To set the Video PID, press OK. Use the Ï and Ð buttons to change the value. The Î and Í buttons move the cursor.
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OPERATION Field Set-up These instructions are for setting up FCII systems that have been prepared and configured for quick field set-up. If the FCII system is not being used with a tripod, be sure to set the FCII on a stable surface before installing the antenna, connecting power, or operating. For Tripod Use Set the tripod up so that it is stable. Mounting on the Tripod Seat the FCII Tripod Mounting Plate into the Tripod Mount.
Figure 10 Not Locked Figure 11 Locked Attaching the Horn Antenna Align the antenna bracket on the horn antenna perpendicular to the bracket mount on the back of the FCII or FCII-MAX unit. Figure 12 Align Antenna Mount with Bracket Figure 13 Insert Antenna Mount into Bracket Figure 14 Rotate Antenna to Lock Figure 15 Antenna Locked to Mount Cable Connections If using the FCII-MAX, connect the RF cable from the FCII to the RF In connection on the FCII-MAX after installing the Horn Antenna.
Figure 16 Connect the RF Cable to the FCII Turn the knurled sleeve to tighten Figure 17 Connect the RF Cable to the RF In Connector on the FCII-MAX Turn the knurled sleeve to tighten Connect the video input to the VIDEO IN connector on the FCII front panel. Connect the audio input to the AUDIO IN connector on the FCII front panel.
Use the Î and Í buttons to select the output power and start transmission. Press OK. Select Robustness Optimize the transmission by changing the robustness setting. Use the Ï and Ð buttons to navigate to the ROBUSTNESS menu Use the Î and Í buttons to select the desired robustness setting. Press OK. Using a Preset Configuration To use a preset configuration, use the Ï and Ð buttons to navigate to the RECALL CONFIGURATION menu. Use the Î and Í buttons to select the desired numbered configuration.
Use the Î and Í buttons to select off to stop transmission. Press OK. Power Down the FCII Flip the FCII ON/OFF switch to the OFF position. Flip the FCII-AC to POWER switch to the OFF position.(if applicable). Disconnect the power chord from the FCII-AC (if no FCII-AC in use, then disconnect power from the FCII.) Disconnect the RF cable from the FCII to the FCII-MAX (if applicable). Remove the antenna. Twist to align the flanges with the opening. Pull straight out.
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PREVENTATIVE MAINTENANCE In order to ensure system longevity it is highly recommended that the following preventative maintenance procedures be done at the appropriate time. Maintenance Schedule Procedure Yearly Quarterly Monthly Prior to Each Use Inspect Mounting Hardware on Tripod, FCII and FCII-AC units ■ Inspect All Cables (connection, chafing) ■ Suggested Spare Parts List The FCII-AC has two fuses located on the front panel. These are a 4A AC Fuse BMS p/n 514000404 and a 6.
Unscrewing the AC Fuse Cap Removing the AC Fuse Holder Figure 18 Replacing the AC Fuse Unscrewing the DC Fuse Cap Removing the DC Fuse Holder Figure 19 Replacing the DC Fuse 25 AC Fuse in Holder
WARRANTY BMS warrants that, at time of delivery, the product will be free from defects in materials and workmanship provided the equipment or system is installed, operated and maintained in accordance with the Operation and Maintenance manual or such other BMS documentation as may be applicable. Any such defect reported to BMS within two years, BMS will take reasonable and prompt action to repair or replace such equipment. Should any of the components be defective, please contact BMS immediately.
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Additional References US Broadcast Frequency Assignments Coded Orthogonal Frequency Division Multiplex (COFDM) Modulation This Page Intentionally Left Blank 28
US Broadcast Frequency Assignments Old BAS Channel Plan 2 GHz (S) Band 17 MHz CW 1990-2110 MHz 1 1994.75 1999.00 2003.25 2 2012.25 2016.50 2020.75 3 2029.25 2033.50 2037.75 4 2046.25 2050.50 2054.75 5 2063.25 2067.50 2071.75 6 2080.25 2084.50 2088.75 7 2097.25 2101.50 2105.75 New BAS Channel Plan 2 GHz (S) Band 12 MHz CW 1990-2110 MHz 12 MHz CS A1r 2028.50 2031.50 2034.50 A2r 2040.50 2043.50 2046.50 A3r 2052.50 2055.50 2058.50 A4r 2064.50 2067.50 2070.50 A5r 2076.50 2079.50 2082.50 A6r 2088.50 2091.
Coded Orthogonal Frequency Division Multiplex (COFDM) Modulation COFDM is used for microwave applications like wireless cameras and mobile video links because of its tolerance to multipath transmission errors. In addition COFDM offers more than twice the spectral efficiency of comparable FM analog microwave transmission. COFDM does not rely on the vulnerability of a single carrier but spreads the digital information over many narrow band carriers using Frequency Division Multiplex (FDM).
Code Rate The code rate represents the amount of Forward Error Correction (FEC) used for each active symbol. FEC is a method of obtaining error control in data transmission. A code rate of ½ means that for two bits of information received, 1 bit is the real data. The other bit tells how intact the first bit is. A code rate of 7/8 means that out of the 8 bits sent, there are 7 bits of real data and only 1 bit that is to catch any errors in those 7.
Modulation Transport Rate (Mb/s) at each Guard Interval for 6 MHz BW Code Rate 1/4 QPSK 16QAM 64QAM 1 1/8 1/16 1/32 Transport Rate (Mb/s) at each Guard Interval for 7 MHz BW 1/4 1/8 1/16 Transport Rate (Mb/s) at each Guard Interval for 8 MHz BW 1/32 1/4 1/8 1/16 1/32 1/2 3,7321 4,147 4,391 4,524 4,354 4,838 5,123 5,278 4,98 5,53 5,85 6,03 2/3 4,976 5,529 5,855 6,032 5,806 6,451 6,830 7,037 6,64 7,37 7,81 8,04 3/4 5,599 6,221 6,587 6,786 6,532 7,257 7,684
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GLOSSARY Analog Transmission Frequency Modulated (FM) method of sending information with radio waves. An older, dependable method of transmission. (See Digital Transmission) Antenna Actuator The mechanism which deploys or retracts the antenna radio operation or for landing and take-off. ASI: Asynchronous Serial Interface Transmission standard used to connect video delivery equipment within a cable, satellite or terrestrial plant.
Multipath The radio wave propagation phenomenon that results in the transmitted signals. reaching the receiving antenna by two or more paths. This condition is not desirable and usually results in signal fading and interference. MUX The combining of multiple signals into a single transmission. Multiplex NIT Network Information Table Omni-Directional Antenna The final transmit element of the microwave system that radiates the signal approximately equally throughout a 360 degree circle.
