Standard ICS number:Metrology and measurement, physical phenomena>>Electricity, magnetism, electrical and magnetic measurements>>17.220.01 General characteristics of electricity and magnetism
Standard Classification Number:General>>Metering>>A56 Radio Metering
associated standards
Publication information
publishing house:China Quality Inspection Press
ISBN:155026·J-2249
Publication date:2007-05-28
other information
drafter:Yang Xujun, Xu Chuanzhong
Drafting unit:Institute 203 of the Second Academy of China Aerospace Science and Industry Corporation
Focal point unit:National Radio Metrology Technical Committee
Publishing department:General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
JJG 1024-2007 Pulse Power Meter Verification Procedure JJG1024-2007 Standard download decompression password: www.bzxz.net
This procedure is applicable to the initial verification, subsequent verification and in-use inspection of various pulse power meters.
Some standard content:
National Metrology Verification Regulation of the People's Republic of China JJG1024—2007 Pulse Power Meters OMMEMKMP Promulgated on 2007-02-28 Implementation on 2007-05-28 Promulgated by the General Administration of Quality Supervision, Inspection and Quarantine JJG1024—2007 Verification Regulation of Pulse Power Meters JJG1024—2007 This regulation was approved by the General Administration of Quality Supervision, Inspection and Quarantine on February 28, 2007, and came into effect on May 28, 2007. Responsible unit: National Radio Metrology Technical Committee Drafting unit: 203 Institute of the Second Academy of China Aerospace Science and Industry Corporation This regulation entrusts the National Radio Metrology Technical Committee to be responsible for the interpretation of this regulation Drafting person: JJG1024—2007 Family Letter Mihong Post Rental To otnggoieonia7 Yang Xujun (Institute 203, Second Academy of China Aerospace Science and Industry Corporation) Xu Chuanzhong (Institute 203, Second Academy of China Aerospace Science and Industry Corporation) 9a69 Siyekou S Pingyuan General Creation of Austrian National Finance All-China National Construction Adjustment of the country's single grass Special tool will be handed over to this branch of the most electrical and electronic heavenly country full service teaching scope Overview 3 Metrological performance requirements 3.1 Frequency range 3.2 Power measurement range 3.3 Calibration factor of power sensor, 3.4 Voltage standing wave ratio of power sensor 3.5 Pulse response. 3.6 Linearity of power sensor 3.7 Output power level of power meter calibration source 4 General technical requirements 4.1 Appearance mark 4.2 Other requirements 5 Control of measuring instruments 5.1 Verification conditions 5.2 Verification items and verification methods Processing of verification results 5.4 Verification cycle Appendix A Verification record format JJG1024—2007 Appendix B Main items Daily measurement uncertainty assessment record (1) 1 Scope JJG1024—2007 Verification procedure for pulse power meters This procedure applies to the initial verification, subsequent verification and in-use inspection of various pulse power meters. 2 Overview Pulse power meter is a measuring instrument used to measure pulse power. The pulse power meter is composed of a pulse power sensor and a power indicator. Its working principle is to convert pulse power into DC (audio) power, which is indicated by the indicator. 3 Measurement performance requirements 3.1 Frequency range: 10MHz~18GHz 3.2 Power measurement range: -30dBm~+20dBm3.3 Calibration factor K of power sensor 3.4 Voltage standing wave ratio S of power sensor: <1.893.5 Pulse response: Rise time t.: <200ns; Fall time t: <200ns. 3.6 Linearity L of power sensor: <10%3.7 Output power level of power meter calibration source Allowable error limit of power level: ±5%. 4 General technical requirements 4.1 Appearance mark The pulse power meter should have the instrument name, instrument model, manufacturer, instrument factory serial number and power supply requirements. 4.2 Other requirements 4.2.1 The switches, knobs, buttons, input and output ports of the power meter should have clear identification marks. 4.2.2 The accessories of the instrument should be complete when it is sent for inspection, and the instrument manual should be available. The subsequent inspection also requires the inspection certificate of the previous inspection. 5 Control of measuring instruments Control of measuring instruments includes initial inspection, subsequent inspection and inspection during use. 5.1 Inspection conditions 5.1.1 Equipment for inspection The equipment used for inspection must be inspected and qualified by the metrology technical organization and within the validity period. 5.1.1.1 Signal generator Frequency range: 10MHz~18GHz; JJG10242007bZxz.net Frequency stability: better than 1.5×10-4/10min; Amplitude stability: better than 0.5%/10min; Pulse modulation: external modulation; Output power range: -70dBm~+20dBm. 5.1.1.2 Pulse generator Frequency range: 100Hz5kHz or above; Rise time (fall time): ≤2ns. 5.1.1.3 Isolator Frequency range: 10MHz~18GHz; Standing wave coefficient: ≤1.1 (10MHz~18GHz). 5.1.1.4 Vector network analyzer Frequency range: 10MHz~18GHz; Allowable error limit of voltage standing wave ratio measurement: 5%. 5.1.1.5 Standing wave test bridge Frequency range: 10MHz~18GHz; Voltage standing wave ratio: <1.06. 5.1.1.6 Power stand Frequency range: 10MHz~18GHz; Power range: 10gW~200mW; Voltage standing wave ratio: <1.3; Maximum allowable error: +2.1%. 5.1.1.7 Power stand Note: Used for calibration of power reference level, commonly used thermistor stand. Frequency range: 10MHz~18GHz; Power range: 10W~10mW; VSWR: <1.3: Maximum allowable error: ±1.1%. 5.1.1.8 Power indicator Note: As a standard power indicator, HP432C or other indicators with similar functions are commonly used. Allowable error limit: ±0.5%. 5.1.1.9 Power divider Frequency range: DC~18GHz; Insertion loss: 8.5dB. 5.1.1.10 Digital voltmeter Maximum effective digit: 6 and a half digits; Allowable error limit: ±0.002% (DC voltage 10V range). 5.1.1.11 Step attenuator Frequency range: DC~18CHz; Attenuation accuracy: 0.2dB/10dB 5.1.2 Verification environment conditions 5.1.2.1 Temperature: (23±5)℃. 5.1.2.2 Relative humidity: ≤80%. JJG1024—2007 5.1.2.3 Power supply: voltage (220±10)V, frequency (50±1)Hz5.1.2.4 Others: There is no mechanical vibration and electromagnetic interference in the surrounding area that may affect the normal operation of the verification system. 5.2 Verification items and verification methods 5.2.1 Verification items are shown in Table 1. Table 1 List of calibration items Item name Appearance and normal working inspection Voltage standing wave ratio of power sensor Calibration factor of power sensor Rise time and fall time of pulse response Linearity of power sensor Output power level of power meter calibration source First calibration Note: 1. "+" indicates the items to be inspected, "" indicates the items that may not be inspected; 2. The items to be inspected after repair are the same as those for the first inspection; 3. The technical requirements of the manual of the inspected power meter shall prevail during the inspection. Subsequent inspection 5.2.2 All inspection equipment shall be preheated according to the time specified in their respective technical manuals. 5.2.3 Appearance and normal operation inspection 5.2.3.1 Appearance and accessories Inspection during use Use visual method to inspect the appearance and accessories of the inspected pulse power meter, and the results shall comply with the provisions of Article 4. Note: The technical inspection pulse power meter described below includes the inspected power sensor and the inspected power indicator. 5.2.3.2 Normal operation inspection Connect the inspected power sensor and the indicator used with it, and the indicator shall display normally after power on and preheating. If there is a self-inspection function, it shall be able to pass the self-inspection, and perform power calibration on the inspected power sensor with the internal power reference source according to the manual to check whether its status is normal. 5.2.4 Voltage standing wave ratio of power sensor S5.2.4.1 Connect the instrument as shown in Figure 1 and measure the reflection coefficient of the power sensor under test; Tested power indicator Vector network analyzer Tested power sensor Figure 1 VSWR calibration block diagram JJG1024—2007 5.2.4.2 Set the measurement frequency point of the vector network analyzer according to the working frequency range of the power sensor under test, and calibrate the vector network analyzer with standard parts (short-circuiter, open-circuit device, load): 5.2.4.3 Calculate the VSWR S of the power sensor under test according to formula (1): S Where: S is the VSWR of the power sensor under test; I is the reflection coefficient T of the power sensor under test. Record the measurement results in Appendix A2.1. 5.2.5 Calibration factor K of power sensor 5.2.5.1 Transfer standard method The transfer standard method is a device composed of a high-directivity single-directional coupler or power divider and a high-precision power meter, which forms a negative feedback amplitude stabilization system with a signal generator. The standard power seat in the standard device is obtained through the transfer of the standard value of the previous level, and the calibration coefficient K of the system is determined, which is then used to calibrate the power sensor under test. Standard power indicator Standard power stand Signal generator Power divider or Directional coupler Digital voltmeter Tested power sensor Figure 2 Calibration factor calibration block diagram of transfer standard method Tested power indicator a. Connect the instrument according to Figure 2, and according to the instrument instructions, power on the required preheating instrument for heating: b. Set the output frequency of the signal generator to the required measurement frequency, and its output amplitude is set to the value that the tested power indicator can normally display; c. Read the indication Ph of the standard power indicator and the indication Pu of the tested power indicator on the main arm; d. Calculate the calibration factor K of the tested power sensor according to formula (2): K.-K.×P P×[-2 Where: K, is the calibration factor of the tested power sensor; K. ——Calibration factor of the standard power system; Pb——Power indication value of the standard power indicator, mW: Pbu——Power indication value of the power indicator under test, mW; 1-FeI, 2——Treat as mismatch term and be regarded as 1 in calculation. Record the calculation results in Appendix A2.1. 5.2.5.2 Alternating comparison method JJG1024—2007 Alternating comparison method is to use a higher level standard power socket to calibrate the power sensor under test Standard power socket Signal generator Isolator Power divider or Directional combiner Bokong power sensor Relatively large calibration factor verification block diagram a. Connect the instrument according to Figure 3, and press the instrument to b. Connect the standard power socket to the signal generator Preheat:|| c. Connect the signal generator to the value that the power indicator to be tested can normally display. d. Add the output power of the standard power indicator and the power indicator value P to the power indicator to be tested. HOUSE indicator indication value P calculate the calibration factor f of the tested power sensor. According to the formula Phs1-Fer wherein: calibration factor of the tested power sensor standard power socket calibration factor, power indicator standard power indicator The power indication value, mWPhs US matching item Record the calculation results in Appendix A 5.2.6 Rise time and fall time Calculate as 1 METROL 5.2.6.1 Connect the instrument as shown in Figure 4, and power on the instrument to preheat the pulse generator Signal generator Tested power sensor Figure 4 Rise time Verification block diagram of time and fall time Tested power indicator JJG1024—2007 5.2.6.2 Set the frequency of the signal generator to the required measurement frequency and its output power level to the required measurement power level: 5.2.6.3 Set the repetition period of the pulse generator to 1ms, the rise time to be less than or equal to 2ns, the amplitude to 0.5V, and the duty cycle to 50%: 5.2.6.4 Set the frequency of the tested pulse power meter to be consistent with the frequency of the signal generator, change the speed of the tested power meter so that its waveform displays one cycle, and use the parameter measurement function of the tested power meter to read the rise time and fall time under different video bandwidths on the pulse power meter; 5.2.6.5 Select different measurement power levels and repeat the above steps to measure the rise time and fall time under different power levels. Record the measurement results in Appendix A2.2 5.2.7 Linearity of power sensor L Connect the instrument as shown in Figure 5 and preheat it according to the instrument requirements. Pulse generator Signal generator Standard step Attenuator Standard power socket Drum test power sensor Figure 5 Block diagram of linearity test of power sensor Standard power indicator Tested power indicator First, connect the standard step attenuator Set the subtraction value to 0dB. At this time, the readings of the standard power meter and the calibrated pulse power meter are recorded as P, and R, respectively. Then set the attenuation value of the standard step attenuator to another value (generally 10dB). At this time, the readings of the standard power meter and the calibrated pulse power meter are recorded as P, and R, respectively. The linearity L is expressed as [RR? L=[P,/P2 1×100% Where: R, R2——power indicator readings of the calibrated pulse power meter, mW; P, P2——power indicator readings of the standard power meter, mW. Measure the linearity of the power sensor under test in pulse and continuous wave modes respectively. 5.2.7.1 Pulse mode day. Set the output frequency of the signal generator to the required measurement frequency, and its output level to the required measurement power level, and set the pulse modulation mode of the signal generator to external modulation: b. Set the output repetition frequency, pulse width and amplitude of the pulse generator to the required measurement state: c. Set the frequency of the standard power meter to be consistent with the frequency of the signal generator; d. Set the measurement mode of the power meter under test to pulse measurement mode, and its frequency is consistent with the frequency of the signal generator; e. Record the power indications of the standard power indicator and the power indicator under test respectively; f. Select different measurement power levels, repeat the above steps a~e, and calculate the linearity according to formula (4): g. Determine whether the measurement data meets the requirements according to the technical indicators in the manual. Record the measurement results in Appendix A2.3. 5.2.7.2 Continuous Wave Mode JJG1024—2007 a. Set the output frequency of the signal generator to the required measurement frequency, and its output level to the required measurement power level, and turn off the pulse modulation mode of the signal generator: b. Set the output state of the pulse generator to "off"; c. Set the frequency of the standard power meter to be consistent with the frequency of the signal generator: d. Set the measurement mode of the power meter under test to continuous wave measurement mode, and its frequency is consistent with the frequency of the signal generator; e. Record the power indications of the standard power indicator and the power indicator under test respectively; f. Select different measurement power levels, repeat steps a to e above, and calculate the linearity according to formula (4); g. Determine whether the measurement data meets the requirements based on the technical indicators in the manual. Record the measurement results in Appendix A2.3 5.2.8 Output of power meter calibration source 5.2.8.1 Connect the instrument as shown in Figure 6, and connect the V center terminal of the power indicator rear panel to the positive terminal of the digital voltmeter, and the V center terminal of the rear panel to the negative terminal of the digital voltmeter: Digital voltmeter Tested pulse power meter (calibration source) Power stand Power indicator Figure 6 Output power level verification block diagram of power meter calibration source5.2.8.2 Power on and preheat the instrument as required:5.2.8.3 Perform zero adjustment on the power indicator:5.2.8.4 Set the output power state of the pulse power meter calibration source to OFF, and record the digital voltmeter reading Vo at this time: Set the output power state of the pulse power meter calibration source to ON, and record the digital voltmeter reading Vi at this time: Disconnect the connection line of the power indicator V. connected to the negative terminal of the digital voltmeter, and directly connect the V on the rear panel of the power indicator to the voltage input terminal of the digital voltmeter, and record the digital voltmeter reading Vap at this time; 5.2.8.7 Calculate the output power P. of the pulse power meter calibration source to be tested according to formula (5): P = 2Vm(Vi- Vo)+ vi- v? Where: P. Output power of the calibration source of the pulse power meter under test; the value recorded in step f; the value recorded in step e; the value recorded in step d; JJG1024—2007 the working resistance of the standard power meter is 2002; the calibration factor of the standard power socket with the same output frequency as the calibration source of the power meter under test. 5.2.8.8 If the calibration source of the pulse power meter under test has different output levels, repeat the above steps. Record the calculation results in Appendix A2.4. Processing of verification results For pulse power meters that have passed the verification according to the requirements of this regulation, a verification certificate shall be issued; for those that have failed the verification, a verification result notice shall be issued, and the unqualified items shall be noted. The contents of the verification certificate and the verification result notice are the same as those in Appendix A. 5.4 Verification cycle The verification cycle of pulse power meter is NH Xinke CHINA METROLOGY METROLO PURLISHING HOUSE Tip: This standard content only shows part of the intercepted content of the complete standard. If you need the complete standard, please go to the top to download the complete standard document for free.