GIG_8651A_8652A_ops 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 31470, Rev. G, November 2002 Series 8650A Universal Power Meters Operation Manual RadioFans.CN 收音机爱 好者资料库 Series 8650A Universal Power Meters WARRANTY Giga-tronics Series 8650A instruments are warranted against defective mate

3、rials and workmanship for two years 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 im

4、plied warranty of fitness for a particular purpose, nor is Giga-tronics liable for any consequential damages. Specification and price change privileges are reserved by Giga-tronics. MODEL NUMBERS The series 8650A includes two models: The single-channel Model 8561A and the dual-channel Model 8652A. A

5、part from the number of sensors they support, the two models are identical. Both models are referred to in this manual by the general term 8650A, except where it is necessary to make a distinction between the models. All technical data and specifications in this publication are subject to change wit

6、hout prior notice and do not represent a change 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 Series 8

7、650A Universal Power Meters Publication 31470, Rev. G, November 2002i Contents About this Publication .xi Conventions .xiii Record of Publication Changes .xv Special Configurations .xvii 1 Introduction 1.1 General Information.1-1 1.1.1 Features . 1-1 1.1.2 Environmental Standards . 1-2 1.1.3 Power R

8、equirements . 1-2 1.1.4 Items Furnished . 1-2 1.1.5 Items Required . 1-2 1.1.6 Cooling . 1-2 1.1.7 Cleaning . 1-2 1.1.8 Receiving Inspection . 1-3 1.1.9 Reshipment Preparation . 1-3 1.2 Installation.1-4 1.2.1 Safety Precautions . 1-4 1.2.2 Power . 1-5 1.2.3 Power Sensor Precautions . 1-5 1.2.4 Inter

9、face (Rear Panel) . 1-6 1.2.4.1Line Voltage Selection see Appendix B for Power Sensor specifications. 1.1.6Cooling No cooling is required if the instrument is operated within its specified operating temperature range (0 to 50 C). 1.1.7Cleaning The front panel can be cleaned using a cloth dampened wi

10、th a mild detergent; wipe off the detergent residue with a damp cloth and dry with a dry cloth. Solvents and abrasive cleaners should not be used. NOTE: The optional 1 GHz Calibrator is required for operation with Series 80701A power sensors (See Option 12 in Appendix C). Introduction Publication 31

11、470, Rev. G, November 20021-3 1.1.8Receiving 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 c

12、arton for evidence of physical damage and immediately report any damage to the shipping carrier. Each Giga-tronics instrument must pass rigorous inspections and tests prior to shipment. Upon receipt, its performance should be verified to ensure that operation has not been impaired during shipment. F

13、ollow the installation instructions in Section 1.2 and the operating instructions in Chapter 2 or 3. 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

14、original shipping container. If the original container 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 p

15、ackaging material. Take extra precaution to protect 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

16、the model and serial number. If the instrument 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)

17、 can be assigned. Contact Giga-tronics via e-mail () or by phone (800.444.2878). (The 800 number is only valid within the US). Giga-tronics may also be contacted via our domestic line at 925.328.4650 or Fax at 925.328.4702. Series 8650A Universal Power Meters 1-4Publication 31470, Rev. G, November 2

18、002 1.2Installation Select the correct operating voltage and install the proper fuse in this housing. Refer to Section 1.2.2, Line Voltage and Fuse Selection for instructions on how to select the voltage and replace the fuse. Observe the following Safety Precautions when installing the Series 8650A

19、Universal Power Meter. See Section 1.2.4 for connecting to the rear panel. Also see Section 2.4.3 for instructions on how to connect and calibrate power sensors. Do not connect main power to the unit until the required operat- ing voltage and fuse rating have been checked. The instrument can be dama

20、ged if connected to a source voltage with the line voltage selector set incorrectly. 1.2.1Safety Precautions This 8650A has a 3-wire power cord with a 3-terminal polarized plug for connection to the power source and safety-ground. The ground (or safety ground) is connected directly to the chassis. I

21、f a 3-to-2 wire adapter is used, connect the ground lead from the adapter to earth ground. Failure to do this can cause the instru- ment to float above earth ground, posing a shock hazard. The 8650A is designed for international use with source voltages of 100, 120, 220, or 240 Vac, 10% at 48 to 440

22、 Hz. The 8650A uses an internationally approved connector that includes voltage selection, fuse, and filter for RFI protection (See Figure 1-1). CAUTION WARNING Introduction Publication 31470, Rev. G, November 20021-5 1.2.2Power The instrument is shipped in an operational condition and no special in

23、stallation procedures are required except to check and/or set the operating voltage and fuse selection as described in the following. When the instrument is shipped from the factory, it is set for a power line voltage (120 Vac for domestic destinations). The power line fuse for this setting is 0.50

24、A Slo-Blo. If the source voltage is to be 220 to 240 Vac, the fuse must be changed to 0.35 A Slo-Blo (See Figure 1-1). The voltage selector and fuse holder are both contained in the covered housing directly above the AC power connector on the rear panel. To gain access to them, use a small screwdriv

25、er or similar tool to snap open the cover and proceed as follows: 1.To change the voltage setting: Use the same tool to remove the voltage selector (a small barrel-shaped component marked with voltage settings). Rotate the selector so that the desired voltage faces outward and replace the selector b

26、ack in its slot. Close the housing cover; the appropriate voltage should be visible through the window (See Figure 1-1). 2.To replace the fuse: Pull out the small drawer on the right side of the housing (marked with an arrow) and remove the old fuse. Replace with a new fuse, insert the drawer and cl

27、ose the housing cover (See Figure 1-1). 1.2.3Power Sensor Precautions Power Sensor safety precautions, selection, specifications and calibration are detailed in Appendix B to this publication. Figure 1-1: Fuse Holder Series 8650A Universal Power Meters 1-6Publication 31470, Rev. G, November 2002 1.2

28、.4Interface (Rear Panel) The rear panels for the 8651A and 8652A are identical and are illustrated in Figure 2-2. Any options that have been installed in the unit will be noted on the serial number tag. Refer to the Special Configurations section in the preface of this manual for detailed informatio

29、n about installed options or other special configurations. Appendix C contains information on all available options for the 8650A. 1.2.4.1Line Voltage Selection 80 dB MAP/PAP; 60 dB BAP Display Resolution User-selective from 1 dB to 0.001 dB in Log mode and from 1 to 4 digits of display resolution i

30、n Linear mode. Measurement Modes CW, Peak, MAP, BAP, PAP Averaging User-selective auto-averaging or manual, 1 to 512 readings. Timed averaging from 20 ms to 20 seconds. Automatic noise compensation in auto-averaging mode. dB Rel single-channel 8651A has only sensor A input. Refer to the Sensor Confi

31、guration details in Section 2.3.4. CAUTION CAUTION 2 3 4 5 Series 8650A Universal Power Meters 2-4Publication 31470, Rev. G, November 2002 2.3Front Panel Applications The Series 8650A screen normally displays measurement data, but it also displays the setup and configuration menus for the meter, dis

32、play and sensor. The setup menus are dynamic; the display adapts to the current operating mode and the type of sensors and other peripheral connections. For example, the sensor identification in Figure 2-2 will display only when a sensor is connected. If a sensor is not connected, the menu will indi

33、cate No Sensor A. The menu displays these other peripheral data only when applicable. Figure 2-2 illustrates the Main Menu; other screens will display when sensors are connected or removed. The options available from the Main menu are: Meter Setup for configuring the meter (See Section 2.3.1) Displa

34、y Setup for configuring the display (See Section 2.3.2) Sensor Setup for configuring installed sensors (See Section 2.3.4) dB/mW for selecting dB or power as the measurement unit (See below) Reset Menu to refresh a min/max value (See below) Rel for recording Relative Measurements (See Section 2.3.3)

35、 From the Main Menu, press dB/mW at any time to toggle between dB and mW as the measurement units. The values on the displayed lines will also change to match the units. The Main Menu will display a Reset Menu selection only after configuring one or more lines to display the data gathering functions

36、, such as Min/Max (illustrated in line 4 in Figure 2-2), Bar Graph/Peaking Meter, Peak Hold, Crest Factor, and Mean See Section 2.4.3 for procedures to zero and calibrate power sensors. The Calibrator function must be turned ON to use the output as an RF source, indicated by the words CAL ON in the

37、upper left corner of the Main Menu (See Figure 2-2). Turn on the 8650A for 15 minutes then cycle the power OFF and ON, this establishes the 1 mW reference for the instrument firmware. To turn the Calibrator ON or OFF, press Meter Setup from the Main Menu. This will display the Setup Menu. From the S

38、etup Menu, press Calibrator to display the Calibrator menu. Toggle the Calibrator On or OFF by pressing On/Off. 1.Press Level dBm to set the RF output level in dBm. Enter the level with the cursor keys. 2.Press Level mW to set the RF output level in power. Enter the level with the cursor keys. 3.Pre

39、ss Frequency to set the output reference frequency. Enter the frequency with the cursor keys. Frequencies other than 50 MHz are available only with Option 12 (See Appendix C). 4.Press OK to accept the changes or Cancel to cancel the changes, and return to the Power Meter Configuration menu. NOTE: Th

40、e wording at the top of the screen will not change while this menu is displayed, but it will be changed to reflect your selection when returning to the Main Menu. Series 8650A Universal Power Meters 2-6Publication 31470, Rev. G, November 2002 2.3.1.2Config Press Config from the Setup menu to display

41、 the Power Meter Configuration menu (See Figure 2-3). From this menu to configure the following: GPIB (Mode REMOTE, which displays whenever the power meter is being operated by remote control (GPIB or RS-232); and configured inputs A, B, A/B, A-B, B/A and B-A. NOTE: The above input configurations ar

42、e available only in the 8652A. The single- channel 8651A will have input A only. Figure 2-11: Configuration Display Menu CAL ON A - 70.999 B - 54.245 - 16.754 CW dB CW dBm CW dBm dB Configure DisplayLine 1 Line 2 Line 3 Line 4 More Options Cancel -24.246 A/B -B A Front Panel Operation Publication 31

43、470, Rev. G, November 20022-17 2.3.2.1Line Configuration Select the line to be configured by pressing the corresponding Line n softkey. The menu in Figure 2-12 will display. The current configuration of the selected source displays in the large window at the bottom of the screen. Source: 1.Press Select Source to enable the cursor in the Source field. 2.Move the highlig