31231_REVG_MAN 电路图.pdf

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1、R e g i s t r a r : B S I , C e r t i fi c a ti o n F M 3 4 2 2 6 R e g i s t e r e d 0 4 J u n e 1 9 9 6 ? A m e n d e d 1 0 S e p t e m b e r 2 0 0 1 ISO 9001 Certified Product Certified Process Giga-tronics Incorporated 4650 Norris Canyon Road, San Ramon, CA 94583 925.328.4650/800.726.4442/925.32

2、8.4700 (Fax) Customer Service: 800.444.2878/925.328.4702 (Fax) Publication 31231, Rev. G, June 2002 Series 12000A Microwave Synthesizers Operation Manual RadioFans.CN 收音机爱 好者资料库 WARRANTY Giga-tronics Series 12000A instruments are warranted against defective materials and workmanship for three years

3、from date of shipment. Giga-tronics will at its option repair or replace products that are proven defective during the warranty period. This warranty DOES NOT cover damage resulting from improper use, nor workmanship other than Giga-tronics service. There is no implied warranty of fitness for a part

4、icular purpose, nor is Giga-tronics liable for any consequential damages. Specification and price change privileges are reserved by Giga-tronics. MODEL NUMBERS The Series 12000A has model numbers for each instrument with a specific frequency range as described in Chapter 1. All models are referred t

5、o in this manual by the general term 12000A, except where it is necessary to make a distinction between the models. In these cases, the specific model number(s) will be used. All technical data and specifications in this publication are subject to change without prior notice and do not represent a c

6、hange without prior notice and do not represent a commitment on the part of Giga-tronics Incorporated. 2002 Giga-tronics Incorporated. All rights reserved. Printed in the USA. RadioFans.CN 收音机爱 好者资料库 DECLARATION OF CONFORMITY RadioFans.CN 收音机爱 好者资料库 Publication 31231, Rev. G, June 2002i Contents Abo

7、ut this Publication .xi Conventions .xiii Configuration Data .xv Record of Publication Changes .xvii Special Configurations .xix 1 Introduction 1.1 General Information.1-1 1.1.1 Introduction . 1-1 1.1.2 Features . 1-2 1.1.3 Environmental Standards . 1-2 1.1.4 Items Furnished . 1-2 1.1.5 Items Requir

8、ed . 1-2 1.1.6 Cooling . 1-3 1.1.7 Cleaning . 1-3 1.1.8 Receiving Inspection . 1-3 1.1.9 Reshipment Preparation . 1-3 1.2 Installation.1-4 1.3 Inputs/Outputs.1-4 1.3.1 I/O Connectors (Front Panel) . 1-5 1.3.2 I/O Connectors (Rear Panel) . 1-6 1.3.3 Computer Interface . 1-8 1.3.3.1GPIB. 1-8 1.3.3.2EI

9、A-232. 1-9 1.3.4 Power . 1-10 1.3.4.1Line Fuse. 1-10 1.3.4.2Fuse Installation. 1-10 1.4 Specifications.1-11 1.4.1 CW Operation .1-11 1.4.2 RF Output . 1-13 1.4.3 Spectral Purity. 1-15 1.4.4 Step Frequency Sweep . 1-16 1.4.5 Step Power Sweep . 1-17 1.5 Supplemental Specifications .1-18 1.5.1 General

10、Specifications . 1-18 1.5.2 Weight the instruments operate over a wide range of microwave frequencies, power levels and in a variety of modulation modes. The 12000A can generate output signals over a frequency range of 10 MHz to 20 GHz; the frequency range is dependent on the specific model number.

11、Table 1-1 lists the models with their respective frequency range. The RF output can be Fixed (CW), Step, Ramp or List Sweep with External Frequency, Amplitude or Pulse Modulation. The Series 124XXA is a CW ONLY Microwave Synthesizer. Option 29 (Scan Modulation) and Option 24 (Internal Modulation Gen

12、erator) are only available on Series 125XXA/127XXA models. General Information Model 124XXA 125XXA/ 127XXA 1.1.1 - Introduction 1.1.2 - Features 1.1.3 - Environmental Standards 1.1.4 - Items Furnished 1.1.5 - Items Required 1.1.6 - Cooling 1.1.7 - Cleaning 1.1.8 - Receiving Inspection 1.1.9 - Reship

13、ment Preparation Table 1-1: Series 12000A Model Numbers Series 12400A (CW Generator) Series 12500A (Signal Generator) Series 12700A (Swept Signal Generator) Frequency Range (Step Sweep, No Modulation)(Step Sweep, Modulation)(Step and Ramp Sweep Modulation) 12408A12508A12708A10 MHz to 8 GHz 12428A125

14、28A12728A2 GHz to 8 GHz 12420A12520A12720A10 MHz to 20 GHz 12422A12522A12722A2 GHz to 20 GHz Series 12000A Microwave Synthesizers 1-2Publication 31231, Rev. G, June 2002 Observe the publications legend header sections as a way to assist in the operability of the Series 12000A purchased. Operation fr

15、om the instruments front panel is detailed in Chapter 2 and Section 2.3 for native data involving the Series 125XXA/127XXA models. Instructions on how to operate the instrument from a remote host computer over the GPIB (General Purpose Interface Bus) can be obtained from Chapter 3. Installation inst

16、ructions for all three models can be found in Section 1.2. Performance Specifications for all three 12000A models are detailed in Sections 1.4 (Series 124XXA) and 1.6 (Series 125XXA/127XXA - Native data). 1.1.2Features 1.1.3Environmental Standards All Series 12000A models are environmentally tested

17、for compliance with MIL-PRF-28800F, Class 3. 1.1.4Items Furnished Accessories and Options are detailed in Appendix A of this publication. In addition to options and/or accessories specifically ordered, the following items are furnished with the instrument: Operation Manual (P/N 31231) Power Cord, 6

18、ft. (P/N WMPO-030007) 1.1.5Items Required No special tools are required to operate the Series 12000A. Test equipment required for performance verification is described in Chapter 4 for the Series 124XXA and Section 4.4 for the Series 125XXA/ 127XXA within. IEEE 488 Interface Cable (Needed for Remote

19、 Control Operation) RF Output Cabling (Made to fit Female Type SMA Output Connector) (Order Accessory Cable Kit Accessory A001, P/N 29847) Features Model 124XXA 125XXA/ 127XXA Advanced digital processing architecture, driving a high-speed, ferrite-based YIG oscillator Spectrally pure output with a t

20、uning resolution of 0.1 Hz Optimum oscillator fast switching speed while maintaining low phase noise Field-programmable gate arrays perform logic operations quickly while a digital signal processor functions as a secondary processor for dynamic control and fast frequency settings without burdening t

21、he primary processor. The frequency ramp sweep technique provides an analog-like ramp sweep using a high- speed digital step sweep of the synthesizer between pre-defined start and stop frequencies. Linearity errors are virtually eliminated because the frequency is stepped at a faster rate than the P

22、LL bandwidth, essentially producing a swept phase locked loop N/A (127XXA ONLY) Introduction Publication 31231, Rev. G, June 20021-3 1.1.6Cooling A cooling fan is installed in all three models. The cooling air intake is located on the rear panel of all models. Care must be taken to avoid obstructing

23、 the flow of air into the instrument. 1.1.7Cleaning The air intake screen for the all three models should be cleaned whenever a significant amount of dust has accumulated on it. Whenever the instrument covers are removed, the interior should be blown out with dry air at a low velocity. 1.1.8Receivin

24、g Inspection Use care in removing the instrument from the carton and check immediately for physical damage, such as bent or broken connectors on the front and rear panels, dents or scratches on the panels, broken extractor handles, etc. Check the shipping carton for evidence of physical damage and i

25、mmediately report any damage to the shipping carrier. 1.1.9Reshipment Preparation If it is necessary to return the instrument to the factory, protect the instrument during reshipment by using the best packaging materials available. If possible, use the original shipping container. If the original co

26、ntainer is not available, use a strong carton (350 lbs./sq.in. bursting strength) or a wooden box. Wrap the instrument in heavy paper or plastic before placing it in the shipping container. Completely fill the areas on all sides of the instrument with packaging material. Take extra precaution to pro

27、tect the front and rear panels. Seal the package with strong tape or metal bands. Mark the outside of the package: FRAGILE DELICATE INSTRUMENT If corresponding with the factory or the local Giga-tronics sales office regarding reshipment, please provide the model and serial number. If the instrument

28、is being returned for repair, be sure to enclose all relevant information regarding the problem that has been found. NOTE: If returning an instrument to Giga-tronics for service, first contact Customer Service so that a return authorization number (RMA) can be assigned. Contact Giga- tronics via e-m

29、ail () or by phone (800.444.2878). (The 800 number is only valid within the US). Contact can also occur via our domestic line at 925.328.4650 or Fax at 925.328.4702. Series 12000A Microwave Synthesizers 1-4Publication 31231, Rev. G, June 2002 1.2Installation All instruments are shipped in operationa

30、l condition and no special installation procedures are required. See Chapter 4 for warm-up time prior to calibration and testing for all models. Each Giga-tronics instrument must pass rigorous inspections and tests prior to shipment. Following installation, the performance of all models should be ch

31、ecked immediately to insure that operation has not been impaired during shipment. The following below apply to all models: Warm-up time of 20 minutes for normal operation Performance Verification procedures detailed in Chapter 4 for all models, including modulation related performance tests specific

32、ally for only the Series 125XXA/127XXA is found starting in Section 4.4 1.3Inputs/Outputs Input/Output connector differentials between the 124XXA and 125XXA/127XXA models are illustrated in Figure 1-1 for the front panel and Figure 1-2 for the rear. Table 1-2 contains the front and rear panel I/O co

33、nnector functional descriptions for all models. The front and rear BNC Connectors on the Series 124XXA have only the ALC and no modulation functions. The Series 125XXA/127XXA have all four connectors: ALC IN, AM IN, FM/M IN 0 V during sweep; +5 V or -5 V at marker frequencies (Signal polarity is sof

34、tware controlled). RF OUTRF OUT Instruments RF output on a type SMA (f) connector. Option 22 - Moves the RF Output connector the rear panel (See Appendix A for Option 22 details). Option 23 - For Type N connector AM INAM IN Connector accepts the input signal from a 600 external amplitude modulation

35、source See “Externally Supplied AM Envelope” in Section 1.7.1. N/A N/AAM OUT An amplitude modulation waveform output at 2 V P-P, into 10 k. (OPTION 24 AVAILABLE ON 125XXA/127XXA ONLY) N/A FM/M INFM/M IN Connector accepts the input signal from a 50 external frequency or phase modulation source. See “

36、Externally Supplied FM Envelope” in Section 1.7.3 and “External Supplied FM Envelope” in Sections 1.7.4 -120 to +25 dBm (Option 26) Resolution -0.01 dB, entry and display Minimum Calibrated Output Level -120 dBm with attenuator Option 26 -10 dBm without attenuator Option 26 RF Off: Attenuates the ou

37、tput to -140 dBm at the output connector Flatness 0.5 dB (-10 dBm to maximum specified power) at 25 10C (Internally Leveled, CW or Frequency Step or Ramp Mode) Add 0.1dB/10 dB with attenuator option (2.5 dB with Option 20*) At 35 to 55C, maximum output power is +13 dBm, flatness +/- 1 dB, Typical te

38、mperature coefficient is -0.025 dB per degree C (*See Section 1.5.3 for Option 20 limitations involving use with the 124XXA) Resolution -Add 0.2 dB to Flatness (Internally Leveled, CW, Frequency Step or Ramp) Maximum Slope of Level Variation 0.5 dB/MHz Output Switching Time 500 s; 20 ms with attenuator change Output Impedance 50 , nominal Series 12000A Microwave Synthesizers 1-14Publication 31231, Rev. G, June 2002 Output SWR 2.0:1 (Typical) Level Drift 2 to 20-55+6 Subharmonics None, 0.01