1、GM DAEWOO Auto It refers to amplifier or adaptor built in the antenna to improve its reception including high-frequency coaxial trunk line and connector supplied as well. 3.2. Standard signal; Frequency 1575.421.1MHz, co-pol means the Right Handle Cycle Polarization. 4. NUMBER OF TEST PIECES Unless
2、otherwise specified, DVP and PVP 11 test pieces shall be tested 5. MEASURING INSTRUMENTS AND APPARATUS FOR TESTING 5.1. General For the measuring instruments and apparatus for testing, the ones calibrate by the national calibration institute, have a valid calibration term shall be used in principle.
3、 5.2. Network Analyzer The range of usage frequency is from 10KHz to 2.9GHz whose vector can be analyzed with acceptable error of 1%. 5.3. Thermostatic container A container capable of keeping the temperature of -60 to +125 with a tolerance of +2.0 and capacity of 100 liter min. The container shall
4、be able to adjust relative humidity up to 95% at a specific temperature 5.4. Vibration tester A tester capable of tests in Method of Vibration Test for Automobile Parts 5.5. Control box for durability tests When testing durability, an automatic breaker which can apply and block signals to operate th
5、e module is needed; and if faulty occurs, it shall be detected and its timing and occurrence number shall be recorded. EDS-T-5439THE TEST PROCEDURE OF COMPONENTS FOR GPS ANTENNA PAGE: 2/6 ISSUED DATE: 2000.02. 28 REVISED DATE: 2008. 10. 21 VERSION: 3 GM DAEWOO Auto & Technology 6. TEST 6.1. Appearan
6、ce test The presence of defects such as harmful flaws, and cracks, which affect the function of the antenna shall not be inspected, test samples shall conform to the material in the engineering specification and the dimension of the samples shall conform to the drawing 6.2. General performance 6.2.1
7、. Antenna Gain The test place shall be an electromagnetic shielded and anti-reflection room to conduct measuring work by using antenna while the test equipment shall be arranged as Picture 1. The length and height to be measured shall be 1.5m2.0m while evaluation shall be conducted by S-Parameter S2
8、1. If there is no specific regulation on the required value in the drawing, the ratio of the maximum and minimum value shall be within 8f . If the GPS antenna is a transmission antenna, install the one of the same spec. or calibrated one in the passive type after removing its amplifier. Ceiling side
9、 length from ceiling side (above1.5m) 80 mm 80mm Measuring height 1.52.0m Bottom side Figure 1. Measurement diagram Metal GPMeasuring length 1.52.0m 0 dBi -8 dBi Network Analyzer EDS-T-5439THE TEST PROCEDURE OF COMPONENTS FOR GPS ANTENNA PAGE: 3/6 ISSUED DATE: 2000.02. 28 REVISED DATE: 2008. 10. 21
10、VERSION: 3 GM DAEWOO Auto & Technology 6.2.2. Antenna Standing Wave Ratio This test is evaluated by GPS antenna reflection loss (S-Parameter S11) as Fig. 1. Measurement is conducted after calibrating the network analyzer by a 50 ohmmeter. If the drawing does not regulate a required value, the Standi
11、ng Wave Ratio shall be not more than 1.5: 1 6.2.3. Amplifying power gain This test is evaluated by the ration of GPS antennas active gain and passive gain. The test equipment shall be arranged as Fig. 1. If the drawing does not regulate a required value, the measured power gain shall be within 25f 1
12、0%. 6.3. Temperature test The operation temperature test shall be conducted at the lowest and highest temperatures. 2 hours after the test temperature, evaluation is conducted by the paragraph 6.2 function test. As for temperature preservation, it shall be done without power supply. Test Temperature
13、 Requirement 6.3.1. Operation Temperature +85 30 Within a range of 20% of 6.2 function measurement 6.3.2. Preservation Temperature +100 40Satisfied function after 196 hour preservation and 2 hours in normal temperature 6.4. High temperature and humidity operation test Supply the power in the no load
14、 state under the test temperature and humidity conditions. Confirm whether function is satisfactory by drying the test item in normal temperature and humidity for 2 hours and applying standard signals to the test item. Then the function shall be within a range of 20% of the standard temperature func
15、tion 6.5. Test temperature: +453 6.6. Relative humidity : 953 % 6.7. Test time : 96 hour 6.8. Test operation voltage: 4.50.5 V 6.9. Test temperature and humidity durability Keep the test piece horizontally for 5 minutes at the temperature +85. Leave it at -30 for 2 hours with power off and then at t
16、he test temperature/humidity (+303/ 805 %) for 5 minutes. After closing of the test temperature and humidity test, dry it at the normal temperature and humidity for 30 minutes. When applying a 4.5V power to the test piece, it shall not generate heat or catch fire. 6.10. Temperature cycling operating
17、 life test Conduct the test in a no-load state with supplying a 4.5V power while using the constant temperature bath whose EDS-T-5439THE TEST PROCEDURE OF COMPONENTS FOR GPS ANTENNA PAGE: 4/6 ISSUED DATE: 2000.02. 28 REVISED DATE: 2008. 10. 21 VERSION: 3 GM DAEWOO Auto & Technology temperature chang
18、es by less than 10 per minute. Operate the test item repeatedly for 5 minutes with power on and 5 minutes with power off. After performing 500times with one hour as one cycle, it shall satisfy the initial function. If there is no specific regulation, it shall be within a range of 20% of the initial
19、function. 6.11. Vibration proof test This test shall be conducted under the condition that the test item is fixed to the vibration tester and supplied with power in a no-load state. Vibration condition shall be 3.2 g(rms) Table. 1 while fixing the test item to the vibration tester shall be done unde
20、r the real vehicle condition. For the 2 hour-test time, there shall not be function decrease resulting from part breakaway, rattle noise nor noise due to resonance. Without specific regulation, it shall be within a range of 20% of the initial function. Table.1. Vibration test condition GK /Hz 10 100
21、 1000 10000 Frequency BREAK POINT POWER SPECTRAL FREQUENCY DENSITY(GK /Hz) Hz 1 0.040 10 2 0.10 20 3 0.10 40 4 0.002 800 5 0.002 1000 6.12. Free drop test -1 -0.1 -0.01 -0.001 -0.0001 +85 -30 30min1 h = 1CYCLEEDS-T-5439THE TEST PROCEDURE OF COMPONENTS FOR GPS ANTENNA PAGE: 5/6 ISSUED DATE: 2000.02.
22、28 REVISED DATE: 2008. 10. 21 VERSION: 3 GM DAEWOO Auto & Technology This test shall be conducted on the concrete floor. When dropping the test item 3 times from 1m above the ground in its edge, left/right sides and front/back sides each, there shall not negative outcomes. 6.13. Electromagnetic Comp
23、atibility 6.13.1. Electromagnetic susceptibility test (Bulk Current Injection/ Tem Cell/ Strip-line/ Free Field) Under EC95-54(ESA), one of the above four tests shall be conducted. When removing applied electric waves (returning), there shall not be malfunction. 6.13.2. Conducted Susceptibility test
24、 This test shall be conducted under EDS-T-5010. Evaluation shall be done by what the monitor displays when applying from ISO 7637 Pulse #1 to #7 of ISO 7637-1 to the test piece power according to Class A 6.13.3. Electrostatic Discharge test Based on the EDS-T-5005, test shall be performed 4 15kV 6.1
25、4. Tear Down Analysis This test is not included as part of the items to be tested, but if abnormality is found, this shall be conducted 7. TEST CLAUSE OF EACH TEST PIECES 7.1. Test clause S1 S2 S3 S4 S5 S6 S7 S8 S9 S10 S11 6.1 X X X X X X X X X X X 6.2 X X X X X X X X X X X 6.3 X X X X X X - - - - -
26、 6.4 X X X X X X - - - - - 6.5 X X X X X X - - - - - 6.6 X X X X X X - - - - - 6.7 X X X X X X - - - - - 6.8 X X - - - - - - - - - 6.9 - - - - - - X X X X X 6.10 - - X X - - - - - X X Note 1) The above X represents the unit test item for each sample. EDS-T-5439THE TEST PROCEDURE OF COMPONENTS FOR GP
27、S ANTENNA PAGE: 6/6 ISSUED DATE: 2000.02. 28 REVISED DATE: 2008. 10. 21 VERSION: 3 GM DAEWOO Auto & Technology 8. RELEVANT STANDARD 8.1. EDS-T-5005: EMC-Component Test Procedure Susceptibility to Electrostatic Discharge 8.2. EDS-T-5010: EMC-Component Test Procedure Conducted Transient Emissions 8.3.
28、 ISO 7637: Road Vehicles Electrical Disturbance by Conduction and Coupling PART 0: Definitions and General PART 1: Passenger Cars and Light Commercial Vehicles with Nominal 12V Supply Voltage - Electrical Transient Conduction along Supply Lines Only 9. RELEVANT REGULATION EC95-54: Electronic Sub Assembly
