Related Manuals for Rhotheta RT-8556
Summary of Contents for Rhotheta RT-8556
- Page 1 User Manual Installation and Operating Ramptester RT-400, RT-500-M, RT-800 Radio Direction Finders...
- Page 2 RT-8556 Ramptester User Manual Edited by: RHOTHETA Elektronik GmbH Kemmelpark Dr.-Ingeborg-Haeckel-Str. 2 82418 Murnau Germany Tel.: +49 8841 4879 - 0 Fax: +49 8841 4879 - 15 Internet: www.rhotheta.de E-Mail: email@rhotheta.de Copyright © RHOTHETA Elektronik GmbH All rights reserved Issue: 2020/10/27 [Rev 1.00a]...
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Page 3: Table Of Contents
RT-8556 Ramptester User Manual Content Safety Instructions ..................4 Legend of Signal Words ......................... 4 Basic Safety Instructions ........................5 EU Declaration of Conformity ..............5 General Description ................... 6 Equipment for Test On-Site ............... 6 Test Procedure ................... 7 Test Preparation ............................. -
Page 4: Safety Instructions
In addition, it is the responsibility of the user to use the product appropriately. The RT-8556 ramptester may not be used in any way that results in personal injury or property damage. -
Page 5: Basic Safety Instructions
The full text of the Declaration of Conformity can be found at: http:// www.rhotheta.com The EU Declaration of the Optional Equipment is on request available at RHOTHETA Elektronik GmbH or directly at the manufacturer of the Optional Equipment. RHOTHETA... -
Page 6: General Description
RT-8556 Ramptester User Manual 3 General Description The RT-8556 ramptester is a DF (direction finder) performance measurement equipment designed for quick test and maintenance of the RT-400, RT-500-M, and RT-800 radio direction finder systems (RDFs). The ramptester consists of the antenna measurement device (ramptester itself) and an optional RF signal generator, which allows tests on any desired frequencies in the RT-8556 defined frequency range. -
Page 7: Test Procedure
RT-8556 Ramptester User Manual 5 Test Procedure 5.1 Test Preparation • Assemble the ramptester in two steps: 1. Connect the measuring ring of the ramptester to the handle tube at the position of the groove and fix the parts with the knurled screws. - Page 8 RT-8556 Ramptester User Manual Standard mounting: Upside-down mounting: 0° mark 1. Loosen the knurled screws in the three guide pieces of the measuring ring and push the guide pieces outwards. 2. Loosen the knurled screw on the clamping piece. Impose the ramptester on the antenna unit (AU).
- Page 9 RT-8556 Ramptester User Manual 3. Press the three guide pieces (brackets) against the antenna and tighten the knurled screws. 4. Now you can turn the measuring ring on the handle tube and the ramptester remains fixed to the antenna, the locking function of the clamping piece allows exact 45°-steps.
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Page 10: Bearing Accuracy Measurement
Set the signal generator frequency to the measurement frequency. VHF Air Band 121,500 MHz Depending on purchased frequency VHF Maine Band 156,800 MHz options available on the DF, RHOTHETA recommends testing of following frequencies. Additional frequencies can be Military Air Band 243,000 MHz tested on demand. - Page 11 RT-8556 Ramptester User Manual Protocol: Bearing Accuracy Measurement (Example) Description Limits Result Passed Result Passed Frequency 121,500 MHz 156,800 MHz 0° Position 350° … 10 ° 45° Position 35° … 55 ° 90° Position 80° … 100 ° 135° Position 125°...
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Page 12: Bearing Sensitivity Measurement
(AM = OFF, FM = OFF) VHF Air Band 121,500 MHz Depending on purchased frequency VHF Maine Band 156,800 MHz options available on the DF, RHOTHETA recommends the testing of following frequencies. Additional frequencies can be Military Air Band 243,000 MHz tested on demand... - Page 13 RT-8556 Ramptester User Manual Protocol: Bearing Sensitivity Measurement (Example) Description Limits Result Passed Result Passed Frequency 121,500 MHz 156,800 MHz 0° Position; P = -50 dBm 350° … 10 ° 90° Position; P = -50 dBm 80° … 100 °...
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Page 14: Audio Test
Adjust the ramptester to any position. VHF Air Band 121,500 MHz Depending on purchased frequency VHF Maine Band 156,800 MHz options available on the DF, RHOTHETA recommends the testing of following frequencies. Additional frequencies can be Military Air Band 243,000 MHz tested on demand. - Page 15 RT-8556 Ramptester User Manual Protocol: Audio Test (Example) Description Limits Result Passed Result Passed Frequency 121,500 MHz 156,800 MHz Audio output loud and clear Frequency 243,000 MHz 406,800 MHz Audio output loud and clear Note Other frequencies can be tested according to the test procedure. The see test protocol template can be adopted appropriately.
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Page 16: Product Disposal
Therefore, carry out the inoperative device, an electronics recycling. • • The RHOTHETA Elektronik GmbH takes back all products that are subject to the requirements of the WEEE Directive (2012/19/EU) of the European Union to supply these products to professional disposal. -
Page 17: List Of Abbreviations
RT-8556 Ramptester User Manual 7 List of abbreviations Abbreviation Meaning Remarks Amplitude Modulation Antenna Measurement Device Antenna Unit CP-SS, C-S COSPAS-SARSAT System Display & Control Unit Direction finder Degree (° = 60' ) Emergency Locator Transmitter Frequency Modulation Ground Global Positioning System...
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