Model 3142D BiConiLog™ Antenna User Manual Archived 6/19/13
ETS-Lindgren L.P. reserves the right to make changes to any product described herein in order to improve function, design, or for any other reason. Nothing contained herein shall constitute ETS-Lindgren L.P. assuming any liability whatsoever arising out of the application or use of any product or circuit described herein. ETS-Lindgren L.P. does not convey any license under its patent rights or the rights of others. © Copyright 2000–2009 by ETS-Lindgren L.P. All Rights Reserved.
Revision Record | MANUAL MODEL 3142 | Part #399229, Rev.
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Table of Contents Notes, Cautions, and Warnings .............................................. vii 1.0 Introduction .......................................................................... 9 Optional End Plates .................................................................................... 9 Tripod Options .......................................................................................... 10 ETS-Lindgren Product Information Bulletin ............................................... 12 2.
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Notes, Cautions, and Warnings Note: Denotes helpful information intended to provide tips for better use of the product. Caution: Denotes a hazard. Failure to follow instructions could result in minor personal injury and/or property damage. Included text gives proper procedures. Warning: Denotes a hazard. Failure to follow instructions could result in SEVERE personal injury and/or property damage. Included text gives proper procedures.
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1.0 Introduction The ETS-Lindgren Model 3142D BiConiLog™ Antenna is designed as a dual-purpose antenna that can be used for both immunity and emission testing. From 26 MHz to 60 MHz, the Model 3142D antenna with optional end plates exhibits an average 5.5 dB gain improvement. At some frequencies, a 10 dB gain improvement is achieved. Applications for the Model 3142D include emissions testing, immunity measurements, and medical equipment testing.
For any dipole-type antenna to transmit or receive energy most efficiently, the length must be nearly a half-wavelength, which is about 4.6 meters long at 30 MHz, and 2.8 meters long at 50 MHz. Unfortunately, this is too unwieldy for many anechoic chambers and test sites. The optional end plates make it appear like an antenna twice as long as the 1.4 meter length.
Model 7-TR—Constructed of PVC and fiberglass components, providing increased stability for physically large antennas. The unique design allows for quick assembly, disassembly, and convenient storage. Allows several different configurations, including options for manual or pneumatic polarization. Quick height adjustment and locking wheels provide ease of use during testing. Maximum height is 2.17 m (85.8 in), with a minimum height of 0.8 m (31.8 in). This tripod can support a 13.5 kg (30 lb) load.
ETS-Lindgren Product Information Bulletin See the ETS-Lindgren Product Information Bulletin included with your shipment for the following: Archived 6/19/13 12 Warranty information Safety, regulatory, and other product marking information Steps to receive your shipment Steps to return a component for service ETS-Lindgren calibration service ETS-Lindgren contact information | Introduction
2.0 Maintenance Before performing any maintenance, follow the safety information in the ETS-Lindgren Product Information Bulletin included with your shipment. WARRANTY Maintenance of the Model 3142D is limited to external components such as cables or connectors. If you have any questions concerning maintenance, contact ETS-Lindgren Customer Service. Annual Calibration See the Product Information Bulletin included with your shipment for information on ETS-Lindgren calibration services.
Replacement and Optional Parts Following are the part numbers for ordering replacement or optional parts for the Model 3142D BiConiLog™ Antenna. Part Description Part Number Polarizing Mounting Adapter 100989 Thread Insert 105861B Optional End Plate Kit (includes): 113032 (2 each required) 113031 End Plate (1) 106364 Thumbscrew, M4x12 (4) For additional/optional mounting hardware, see Additional Mounting Options on page 24.
3.0 Specifications Electrical Specifications With Standard Bow Tie Elements / With Optional End Plates Frequency Range: 26 MHz–6 GHz Input Impedance (Nominal): 50 Ω VSWR (Average): 2:1 above 50 MHz Maximum Continuous Power: 1 kW Peak Power: 1.3 kW Pattern Type: Directional Polarization: Linear Connector: Type N female Physical Specifications Archived 6/19/13 Height: 76.2 cm (30.0 in) Length: 166.1 cm (65.39 in) Width: 133.0 cm (52.72 in) Weight (Without End Plates): 7.7 kg (17.
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4.0 Assembly Instructions Before connecting any components, follow the safety information in the ETS-Lindgren Product Information Bulletin included with your shipment.
Attach Bow Tie Elements The Model 3142D ships with the bow tie elements detached. To attach the bow tie elements: 1. For stability, mount the Model 3142D onto a tripod or tower. See Mounting Instructions on page 21 for the steps to mount the antenna. 2. Slide the narrow end of one of the bow tie elements into the receptacle hole on the antenna boom, and then align the bow tie with the receptacle on the boom. Do not cross thread this connection or permanent damage to the bow tie element could occur.
Attach Optional End Plates 1. For protection, there is a black end cap on each of the bow tie elements. Use a Phillips screwdriver to carefully remove the four screws in each of the bow tie end caps. Remove the end caps. The end caps should be reinstalled when you are done using the optional end plates, so store the end caps and the screws in a safe place. Do not cross thread this connection or permanent damage to the bow tie element could occur. Archived 6/19/13 2.
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5.0 Mounting Instructions Before connecting any components, follow the safety information in the ETS-Lindgren Product Information Bulletin included with your shipment. The Model 3142D is a precision measurement device. Handle with care. Contact with any metal or non-metallic structure can capacitively load the antenna, which may cause unrepeatable results.
Using Included Mounting Adapters The Model 3142D ships with these mounting adapters: 100989 Polarizing Mounting Adapter with 7/8–14 thread receptacle If you need to convert the polarizing adapter to a 1/4–20 receptacle, insert the 1/4–20 thread insert into the polarizing adapter 105861B 1/4–20 Thread Insert Archived 6/19/13 22 | Mounting Instructions
To attach the included adapters to the Model 3142D: Model 3142D mounted onto 4-TR using included 100989 Polarizing Mounting Adapter and 105861B 1/4–20 Thread Insert 1. If required, insert the 1/4–20 thread insert into the polarizing adapter. 2. Remove the mounting knob from the mounting bracket on the antenna. 3. Slide the mounting bracket onto the polarizing adapter with the polarizing adapter placed between the shoulders of the mounting bracket. 4.
Using the Stinger to Mount to a Model 2175 MiniMast Do not use the stinger to mount the Model 3142D onto a 4-TR tripod. The stinger mount provides on-axis rotation during 90° horizontal or vertical polarization. The stinger enables you to mount the antenna directly to an ETS-Lindgren 7-TR Tripod or mast. Before you begin: Archived 6/19/13 24 Install the center rotate boom (part# 108197) for rear-mount stinger-type antennas onto the 7-TR.
1. Thread the antenna feed or receiving cable through the center of the boom so that the antenna connector emerges a few inches out of the clamp end of the boom. 2. Attach the cable to the Type N connector at the end of the stinger. 3. Slide the cable and stinger into the clamp on the boom, carefully guiding the cable out the other end.
4. When you reach the back of the balun box, align it with the boom receptacle, and then slide the smaller portion of the balun box into the boom. This will prevent rotation of the antenna unless the boom is being polarized. 5. Tighten the clamp knobs on the boom to secure the antenna into place.
6. Secure the antenna by inserting the antenna mount knob through the boom and into the mounting adapter.
Model 3142D mounted horizontally on Model 2175 Model 3142D rotated vertically on Model 2175 Archived 6/19/13 28 | Mounting Instructions
Additional Mounting Options 4-TR MOUNTING OPTIONS Following are additional options for mounting the Model 3142D onto an ETS-Lindgren 4-TR tripod. Contact the ETS-Lindgren Sales Department for information on ordering optional mounting hardware.
7-TR AND M AST MOUNTING OPTIONS The stinger on the Model 3142D enables you to mount to antenna directly to an ETS-Lindgren 7-TR Tripod Positioner. However, following are additional options for mounting the Model 3142D onto an ETS-Lindgren 7-TR Tripod Positioner. Contact the ETS-Lindgren Sales Department for information on ordering optional mounting hardware.
Mast refers to 2070 Series, 2075, and 2175 Antenna Towers.
Model 3142D mounted horizontally on 7-TR Archived 6/19/13 32 | Model 3142D mounted vertically on 7-TR Mounting Instructions
2X2 BOOM MOUNTING OPTIONS Following are additional options for mounting the Model 3142D onto a 2x2 boom. Contact the ETS-Lindgren Sales Department for information on ordering optional mounting hardware. 2x2 boom refers to a typical 2-inch by 2-inch boom.
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6.
An estimate of the power required, taking VSWR into account, is obtained from: 2 Pf = Pn / {1-[(VSWR-1)/(VSWR+1)] } Pf = forward (amplifier output) power Pn = new power, as discussed For IEC/EN 31000-4-3 type testing, the antenna tip can be placed at any distance between one and three meters from the EUT as long as the front face plane is illuminated according to the -0, +6 dB uniform field specifications.
An estimate of the power required, taking VSWR into account, is obtained from: 2 Pf = Pn / {1-[(VSWR-1)/(VSWR+1)] } Pf = forward (amplifier output) power Pn = new power, as discussed For IEC/EN 31000-4-3 type testing, the antenna tip can be placed at any distance between one and three meters from the EUT as long as the front face plane is illuminated according to the -0, +6 dB uniform field specifications.
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7.0 Typical Data Typical Antenna Factor Distance for the ANSI 3-meter and 10-meter calibrations is measured from the antenna midpoint, and for SAE 1-meter calibrations the distance is measured from the antenna tip. Midpoint is defined as half the distance between the small elements and the bow ties, which is about 45 cm from the small end tip.
Typical Gain Archived 6/19/13 40 | Typical Data
Typical Gain With and Without End Plates For frequencies above 60 MHz, use the Model 3142D BiConiLog™ Antenna without the end plates; additional gain is provided only when using end plates for frequencies below 60 MHz.
Typical VSWR Archived 6/19/13 42 | Typical Data
Appendix A: Warranty See the Product Information Bulletin included with your shipment for the complete ETS-Lindgren warranty for your Model 3142D BiConiLog™ Antenna. DURATION OF WARRANTIES FOR MODEL 3142D All product warranties, except the warranty of title, and all remedies for warranty failures are limited to two years.
