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Summary of Contents for Vaisala RB31
- Page 1 Vaisala Telemetry Antenna RB31 UIDE M210538EN-C February 2006...
- Page 2 The contents are subject to change without prior notice. Please observe that this manual does not create any legally binding obligations for Vaisala towards the customer or end user. All legally binding commitments and agreements are included exclusively in the applicable supply contract or...
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Page 3: Table Of Contents
ESD Protection ................. 5 Recycling .................. 6 Warranty..................6 Technical Support ..............6 CHAPTER 2 PRODUCT OVERVIEW.................. 7 Introduction to RB31..............7 Construction ................8 Antenna Segments..............8 Antenna Amplifier and Switch RBD121 ........ 9 CHAPTER 3 INSTALLATION.................... 11 Installation Site............... 11 Unpacking ................ - Page 4 User's Guide ______________________________________________________________________ CHAPTER 6 TECHNICAL DATA ..................17 CHAPTER 7 PARTS LIST ....................19 CHAPTER 8 DRAWINGS ....................23 2 ___________________________________________________________________ M210538EN-C...
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Page 5: Chapter 1 General Information
- Chapter 5, Maintenance, provides information on servicing operations. - Chapter 6, Technical Data, provides the technical specifications. - Chapter 7, Parts List, contains the parts list for Vaisala Telemetry Antenna RB31. - Chapter 8, Drawings, contains the essential drawings for Telemetry Antenna RB31. -
Page 6: General Safety Considerations
NOTE Note highlights important information on using the product. Feedback Vaisala Customer Documentation Team welcomes your comments and suggestions on the quality and usefulness of this publication. If you find errors or have other suggestions for improvement, please indicate the chapter, section, and page number. You can send comments to us by e-mail: manuals@vaisala.com... -
Page 7: Product Related Safety Precautions
Chapter 1 ________________________________________________________ General Information Product Related Safety Precautions The Vaisala Telemetry Antenna RB31 delivered to you has been tested for safety and approved as shipped from the factory. Note the following precautions: WARNING Ground the product, and verify outdoor installation grounding periodically to minimize shock hazard. -
Page 8: Recycling
If the product needs repair, please follow the instructions below to speed up the process and to avoid extra costs to you. Read the warranty information. Contact Vaisala technical support via e-mail or fax and request for RMA (Return Material Authorization) and shipping instructions. -
Page 9: Chapter 2 Product Overview
RB31 is well-suited for use in fixed installations. The antenna has no moving parts; the radiation pattern of the antenna can be electrically directed to track the flying radiosonde. -
Page 10: Construction
User's Guide ______________________________________________________________________ Construction Vaisala Telemetry Antenna RB31 consists of the directional antenna segments, Antenna Amplifier and Switch RBD121, radome, antenna base, and antenna cable. Antenna Segments The antenna consists of six antenna segments for horizontal reception and one segment for upwards direction. -
Page 11: Antenna Amplifier And Switch Rbd121
West) and 90° (upwards). The OUT connector is connected to the cable from output terminal of RB31 on the through-hole plate. The other terminals are connected to the antenna radiators: 90° to the cross dipole and the others to the corner radiator of the marked direction Figure 2 shows the cabling scheme of an RBD121 unit. - Page 12 User's Guide ______________________________________________________________________ This page intentionally left blank. 10 __________________________________________________________________ M210538EN-C...
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Page 13: Chapter 3 Installation
The Antenna is delivered as a single functional unit including the radome and the internal parts (antenna elements, antenna amplifier and switch) with all connections completed. Therefore, unpacking is a simple operation and requires no special instructions. VAISALA _______________________________________________________________________ 11... -
Page 14: Antenna Base Installation
User's Guide ______________________________________________________________________ Antenna Base Installation For antenna base installation, refer to assembly drawing DRW214844 at the end of this manual. Assembling the Antenna The antenna is installed with the "N" side pointing to the north. The antenna cable is connected to the corresponding connector at the antenna base. -
Page 15: Chapter 4 Operation
Chapter 4 ________________________________________________________________ Operation CHAPTER 4 OPERATION This chapter provides additional information for the users of the RB31 system. General Vaisala Telemetry Antenna RB31 can be used in conjunction with the Vaisala DigiCORA® equipped with Vaisala Sounding Processing Subsystem SPS311. -
Page 16: Options
10 dB. With different cable types this leads to the following approximate maximum cable lengths: Table 1 Approximate Maximum Cable Lengths Cable Type Vaisala Part No. Cable Length (m) Standard cable (RG213/U) 3969 Andrew LDF4-50A Suhner RG213/U-5... -
Page 17: Chapter 5 Maintenance
Switch, the dome must be removed and the antenna reflector plate tilted upwards. In case any of the antenna elements seems to be insensitive, the most common reason is a loose cable connector or a malfunction in the antenna switching unit. VAISALA _______________________________________________________________________ 15... -
Page 18: Basic Troubleshooting
User's Guide ______________________________________________________________________ Basic Troubleshooting If the antenna operates poorly as a whole, check first that the DC supply input is found at the end of the antenna cable. If the supply voltage is in order the fault is possibly in the antenna amplifier. 16 __________________________________________________________________ M210538EN-C... - Page 19 Chapter 6 ____________________________________________________________ Technical Data CHAPTER 6 TECHNICAL DATA This chapter provides the technical specifications. Table 2 Telemetry Antenna RB31 Specifications Feature Specification Antenna Frequency range 400 … 406 MHz Horizontal directivity 8 dBi Vertical directivity -3 dBi Polarization near horizon...
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- Page 21 Chapter 7 _________________________________________________________________Parts List CHAPTER 7 PARTS LIST This chapter contains the parts list for Vaisala Telemetry Antenna RB31. Table 3 Parts List for Telemetry Antenna RB31 Ref. Part no. Item DRW214844 RB31 Antenna Drawing DRW214860 Type Label for RB31 Antenna...
- Page 22 User's Guide ______________________________________________________________________ 4337 Spring washer B4 DIN 127 (4 pcs) 4812 Hexagon nut M4 DIN 934 (4 pcs) – Slot screw M6x8 DIN 84 (4 pcs) – Spring washer B6 DIN 127 – Cross head screw M6x25, special 2634 Mounting flange (alt.
- Page 23 BNC-angle PCB cable receptacle, Suhner type, 86BNC-50-3-3 1901 BNC cable plug Suhner type, 11BNC-50-1- 3053 Coaxial cable AJS 50-3 RB4302 Internal connection cable 15292 BNC-angle PCB cable receptacle, Suhner type, 86BNC-50-3-3 7030 Angle cable plug Suhner, 16N-50-3-26C/133 VAISALA _______________________________________________________________________ 21...
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- Page 25 DRAWINGS This chapter contains the essential drawings for Telemetry Antenna RB31. Table 4 List of Drawings Description Drawing Code RB31 Antenna, Assembly Drawing DRW214844 RB31 Antenna, Exploded View DRW215823 RB31 Cabling, Assembly Drawing DRW214883 See the following pages for illustrations.
- Page 26 User's Guide ______________________________________________________________________ 24 __________________________________________________________________ M210538EN-C...
- Page 27 Chapter 8 _________________________________________________________________Drawings VAISALA _______________________________________________________________________ 25...
- Page 28 User's Guide ______________________________________________________________________ 26 __________________________________________________________________ M210538EN-C...
- Page 29 3845 Hex. socket head screw M10 x 50 DIN912 3069 Hexagon nut M10 DIN934 3069 Hexagon nut M10 DIN934 4342 Spring washer B10 DIN127 16267 Plain washer A10.5 DIN9021 60172 Stud M10 x 150 0952 Wedge bolt VAISALA _______________________________________________________________________ 27...
- Page 30 User's Guide ______________________________________________________________________ 28 __________________________________________________________________ M210538EN-C...
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