1、Beneficial comments, recommendations, additions, deletions, clarifications, etc. and any other data that may improve this document should be sent to: WR-ALC/742 CBSG, 460 Richard Ray BLVD, Ste 200, Robins AFB, GA 31098-1611. Since contact information can change, you may want to verify the currency o
2、f this address information using the ASSIST Online database at http:/assist.daps.dla.mil . FSC 6625 A-A-50740A 8 July 2009 SUPERSEDING A-A-50740 30 October 1987 COMMERICIAL ITEM DESCRIPTION SPECTRUM ANALYZER (10 kHz 50 GHz) The General Services Administration has authorized the use of this commercia
3、l item description by all federal agencies. 1. SCOPE. This Commercial Item Description(CID) describes a solid-state, internal pre-selection, programmable, 10 Hz resolution bandwidth, 10 kHz to 50 GHz, Spectrum Analyzer including external mixers. This CID is meant as a minimum requirement for the Spe
4、ctrum Analyzer in which only those manufacturers that meet or surpass the following requirements are qualified per this CID. Test equipment offered may be commercially available and may be modified to the extent necessary to meet the following requirements are supplied per this CID. 2. CLASSIFICATIO
5、N. Equipment covered by this CID shall be commercially available equipment and may be modified to the extent necessary to meet the following description. The equipment shall be Class 3, in accordance with MIL-PRF-28800F, except as specified herein. 3. SALIENT CHARACTERISTICS. The equipment shall be
6、capable of operation within the accuracies, limits, and specifications herein. 3.1 Safety and Environmental. The equipment shall meet all safety and environmental requirements as specified in MIL-PRF-28800F for the classification as stated herein except as specified herein. 3.2 Temperature Requireme
7、nts. The temperature ranges for both operating and non- operating conditions shall be as specified for Class 3 equipment in MIL-PRF-28800F. 3.3 Electrical Power Sources. The equipment shall operate from nominal commercial, military, and shipboard power sources of 110/220 Volts AC (+10%) at line freq
8、uencies of 45 Hz to 440 Hz. Power consumption shall not exceed 650 VA. Transient state conditions shall meet MIL-PRF-28800F requirements for Class III equipment. 3.4 Magnetic Environment. The equipment shall comply with the magnetic environment requirements of MIL-PRF-28800F. 3.5 Reliability. The de
9、sign of the equipment shall be such that under normal use and operation the equipment does not fail within 8000 hours of operation with a statistical certainty of 95%. Reinstated after (8 July 2009) and may be used for new and existing designs and acquisitions. INCH-POUND Provided by IHSNot for Resa
10、leNo reproduction or networking permitted without license from IHS-,-,-A-A-50740A 2 3.6 Calibration and Maintenance Adjustments. The design of the system shall provide for readily accessible calibration adjustments and maintenance adjustments. The calibration adjustments, wherever possible, shall be
11、 accessible without removal of the equipment case or modules. The calibration interval shall be a period of one year or greater based on an operating time of 2000 hours. No special tools shall be required for alignment or adjustment except those furnished with the equipment. 3.7 Performance Requirem
12、ents. The equipment shall meet all requirements specified herein, under all combinations of input power conditions, output signal conditions and operating service condition as specified in MIL-PRF-28800F for the class specified herein. 3.7.1 Frequency Range. The minimum frequency range of the Spectr
13、um Analyzer with internal and external mixers shall be 10 kHz to 50 GHz. 3.7.2 Frequency Reference Accuracy. a. Aging rate. After 24 hours warm-up period, the aging shall be less than 1x10-9/day, and less than 2.5x10-7/year. b. Temperature Stability. The temperature stability shall be better than 2x
14、10-8 for any temperature change between 0o C and +55o C. 3.7.3 Center Frequency Accuracy. The center frequency accuracy at 1GHz with 0 span shall be better than +/-50 Hz/day; span/div. controls shall not effect accuracy more than +/-2% for spans less than 1 MHz. 3.7.4 Frequency Counter. The Spectrum
15、 Analyzer shall provide a fully integrated frequency counter capability. The frequency counter accuracy shall allow a 2 GHz signal to be measured within 400 Hz. The total accuracy shall be defined as: +Counter Frequency X Reference Frequency Accuracy + (50 Hz X Harmonic Mixing Number) + 1 LSD. 3.7.5
16、 Frequency Span. The minimum span range shall be 100 Hz to a frequency range of 21 GHz over 10 divisions of the displays horizontal axis. The frequency span accuracy shall be better than +/- 10% over all spans. 3.7.6 Resolution Bandwidth. The resolution bandwidth shall be 10 Hz to 3 MHz (3 or 6 dB).
17、 The setting shall be front-panel selectable or automatic. 3.7.7 Residual FM. The total residual FM shall be less than 10 Hz peak to peak in 20 milliseconds, using a 10 Hz resolution bandwidth in internal mixing for span setting less than or equal to 100 kHz in the phase lock mode. 3.7.8 Frequency D
18、rift. The frequency drift after a 1-hour warm up period shall be less than 50 Hz/min. for frequency span less than 100 kHz. 3.7.9 Sensitivity. The following shall be a minimum acceptable overall sensitivity at 10 Hz resolution bandwidth and lowest harmonic-mixing mode: (Clause does not refer to indi
19、vidual frequency bands.) Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-50740A 3 3.7.10 Sensitivity with Internal Mixer. Frequency Range Sensitivity (dBm) 10 kHz - 50 kHz -95 50 kHz - 1.8 GHz -110 1.8 GHz - 6.4 GHz -122 6.4 GHz - 21 GHz -102 3.7
20、.11 Sensitivity with External Mixer. Frequency Range Sensitivity (dBm) 18 GHz - 26.5 GHz -110 26.5 GHz - 40 GHz -108 33 GHz - 50 GHz -102 3.7.12 Frequency Response. When tuned to the specified frequency range, with attenuator set at 10 dB, the analyzer shall have the following: 3.7.13 Frequency Resp
21、onse with Internal Mixer. Frequency Range Response dB max 10 kHz - 1.8 GHz +/- 1.5 1.8 GHz - 6.4 GHz +/- 2.5 6.4 GHz - 13 GHz +/- 3.5 13 GHz - 18 GHz +/- 4.0 18 GHz - 21 GHz +/- 5.0 3.7.14 Frequency Response with External Mixer. Frequency Range Response dB max 21 GHz - 26.5 GHz +/- 2.5 26.5 GHz - 50
22、 GHz +/- 2.5 3.7.15 Sideband Noise. The Sideband noise shall be -86 dBc/Hz or less at 10 kHz offset from center frequency and in the lowest harmonic mixing mode. 3.7.16 Single Input Range. The minimum amplitude reference level range shall be from -115 dBm to +30 dBm with a safe input of +30 dBm in t
23、he log mode or 1 Watt in the linear mode. 3.7.17 Input Attenuator Accuracy. The input Attenuator shall have a minimum range of 0-60 dB with front panel selectable steps of 10 dB attenuator. The attenuator accuracy shall not exceed 3.0 dB over 60 dB range from 0-18 GHz, and 6.0 dB over the 60 dB rang
24、e overall from 18-21 GHz. 3.7.18 RF Input Connector. For frequencies up to 21 GHz, the RF input connector shall be compatible with the Type N connectors. When mixers are used, the connection shall be through a combination of waveguide mixers, adapters and connectors. The RF input connectors shall be
25、 compatible and mate nondestructively with WR 42 Flange UG-595/U (18-26.5 GHz), WR 28 Flange UG-500/U (26.5-40 GHz), and WR 22 Flange UG-383/U (33-50 GHz). Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-50740A 4 3.7.19 Input Impedance. The input
26、 impedance shall be 50 ohms nominal. The Voltage Standing Wave Ratio (VSWR) shall not be greater than 3:1 up to 18 GHz; nor greater than 3.5:1 from 18 GHz to 21 GHz. 3.7.20 Input Power. The Spectrum Analyzer shall accept alternating signals that are less than 1 watt (+30 dBm) continuous over the fre
27、quency range of 10 kHz - 21 GHz. The waveguide input over the frequency range of 18 - 50 GHz shall accept alternating signals that are less than or equal 100 mW (+20 dBm) continuous. 3.7.21 External Reference Input. The equipment shall be provided with an input to accommodate a 10 MHz external refer
28、ence. 3.7.22 Output. The equipment shall be provided with an internal calibrator signal output, an X-Y recorder output, 1st Local Oscillator output greater than +5 dBm and 50 ohm nominal impedance; a pen-lift control, and an IF output at 5 dBm level and 50 ohm nominal impedance. 3.7.23 Vertical Scal
29、ing. Linear or log vertical scaling shall be selectable from the front panel. The log scale shall have a minimum of 2 selectable calibrated scales: 2dB/div and 10db/div. 3.7.24 Display Accuracy. The maximum allowable cumulative error in the log display mode shall be +/- 4.0 dB. The maximum accuracy
30、at full scale display, in the linear mode shall be +/- 5%. 3.7.25 Third Order Intermodulation Distortion. The third order intermodulation distortion shall be -70 dBc or less at 5 GHz with an input level to the mixer of -30 dBm for each tone. 3.7.26 Harmonic Distortion. The harmonic distortion to 2 G
31、Hz shall be -60 dBc or less, and -100 dBc or less from 2 GHz to 21 GHz with an input level to the mixer of -40 dBm. 3.7.27 Local Oscillator Emissions. The Local Oscillator emissions referenced to the input mixer shall be -80 dBm or lower with 10 dB RF attenuation. 3.7.28 Digital Storage. Digital sto
32、rage shall be provided with selectable modes that save maximum signal values and noise-average spectral displays of two signals. The digital storage function shall be capable of storing and displaying at least eight spectrums including LCD readout measurement parameters. When a battery is required f
33、or the digital storage circuitry, the battery life shall be at least 12 months under the normal operating conditions. 3.7.29 Markers. The equipment shall provide frequency and amplitude markers, using one marker for absolute measurements and two markers for relative measurements. Marker positioning
34、shall provide readout of frequency and amplitude of any point, or the difference in amplitude or frequency between two points within the frequency range of the instrument. 3.7.30 Display Viewing Area. The equipment shall provide a flat display, with a minimum useful scan area of 10 divisions wide by
35、 8 divisions high. The graticule will include a log scale of 10, 5, 2, and 1 dB/div and a linear scale of 10% of reference level/div. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-50740A 5 3.7.31 Display Readout. The Display shall be capable of
36、 displaying the following readout: a. Reference level. b. Center frequency. c. Vertical display mode. d. Frequency span/div. or frequency span. e. Resolution bandwidth. f. RF attenuation. 3.7.32 Mixers. The Spectrum Analyzer shall use no more than three (3) mixers and, if required, a unit driving am
37、plifier. The ranges and conversion loss shall be as follows: Mixer Frequency Range Average Conversion Loss Maximum 18 26.5 GHz -30 dB 26.5 40 GHz -30 dB 33 50 GHz -30 dB 3.7.33 Interface. The Spectrum Analyzer shall provide an IEEE standard 488, USB, and GPIB interface function and connector. This i
38、s to enable the Spectrum Analyzer for remote control of all front panel function except power switch, display intensity, frequency calibration, level calibration and trigger level adjustment knob. 3.7.34 Programmability. The Spectrum Analyzer shall be fully programmable except for display positionin
39、g, display visual controls, manual scan, level calibration and power. 3.7.35 Front-Panel Controls. The following shall be front-panel controllable: a. Store display b. Erase display c. Operate in non-storage display mode d. Store and display two traces, one active and one previously stored spectrum
40、e. Perform normalization or trace subtraction f. Peak hold h. Selective display and blanking i. Internal preselection j. Digital averaging k. Vertical display l. Linear display m. Logarithmic display n. Intensity 3.7.36 Signal Identification. The instrument shall have the capability, when using exte
41、rnal mixers, of identifying a true signal from a false signal when preselection is not available. This capability may be selected from a front panel control or from menu selection. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-50740A 6 3.7.37 A
42、ccessories. Each instrument shall be provided with the following: a. Spare fuses b. 115V power cable c. Operator manual d. Programmer manual e. 18 - 26.5 GHz mixer (if needed to meet specifications) f. 26.5 - 40 GHz mixer g. 33 - 50 GHz mixer h. Mixer amplifier (if required) i. N male to BNC female
43、adapter j. BNC to BNC connector, 50 ohm coax cable k. 2 meter, double shielded GPIB cable 3.7.38 Dimensions and Weight. The size and weight of the Spectrum Analyzer shall be consistent with current commercial practices. 4. REGULATORY REQUIREMENTS. 4.1 The offeror/contractor is encouraged to use reco
44、vered materials to the maximum extent practicable, in accordance with paragraph 23.403 of the Federal Acquisition Regulation (FAR). 5. PRODUCT CONFORMANCE PROVISIONS. 5.1 Product Conformance. The products provided shall meet the salient characteristics of this CID, conform to the producers own drawi
45、ngs, specifications, standards and quality assurance practices, and be the same product offered for sale in the commercial market. The government reserves the right to require proof of such conformance. 5.2 Metric Products. Products manufactured to metric dimensions will be considered on an equal ba
46、sis with those manufactured using inch-pound units, provided they fall within the specified tolerances using conversion tables contained in the latest revision of Federal Standard No. 376, and all other requirements of this CID are met. If a product manufactured to metric dimensions exceeds the tole
47、rances specified in the inch/pound units, a request should be made to the contracting officer to determine if the product is acceptable. 6. PACKAGING. 6.1 Preservation, packing, and marking shall be as specified in the contract or order. 7. NOTES. 7.1 Source of documents. 7.1.1 Military Specificatio
48、ns, Standards, and Handbooks referenced herein may be obtained at http:/assist.daps.dla.mil or from the Standardization Documents Order Desk, 700 Robbins Ave, Bldg 4, Section D, Philadelphia, PA 19111-5094. 7.1.2 The Federal Acquisition Regulation (FAR) may be obtained at www.acqnet.gov/far or from
49、the Superintendent of Documents, U.S. Government Printing Office, Washington, DC, 20402. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-50740A 7 7.1.3 Institute of Electrical and Electronics Engineers (IEEE) standards products may be obtained at ht
