BK PRECISION 2650 Instruction 电路图.pdf

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1、Handheld 3.3GHz Spectrum Analyzer 2650 Optimum for evaluation of W-CDMA CDMA GSM PDC PHS Wireless LAN Bluetooth RadioFans.CN 收音机爱 好者资料库 1 RadioFans.CN 收音机爱 好者资料库 2 ? ? ? ? FEATURES2650 ? ? ? ? ? 1 Compact and lightweight 3.75 lb (1.7 kg) The dimensions are as small as WxHxD 6.4 x 2.75 x 10.25” (162

2、x 70 x 260 mm), and the weight is only 3.75 lb (1.7 kg) including the battery. It is very convenient for outdoor use and while on business trips. 2 Measuring frequency range 50kHz to 3.3GHz This bandwidth covers those of W-CDMA, CDMA, PDC, PHS, GSM, 2.4GHz band wireless LAN, Bluetooth. 3 Operation w

3、ith battery for 100 minutes When the battery is fully charged, Model 2650 operates for about 100 minutes (with the back light turned off). It is extremely convenient for outdoor use and for measuring wireless LAN installation environment. 4 Performance that is comparable to large- size bench type Mo

4、del 2650 guarantees a highly stable frequency axis by PLL synthesizer system. The center frequency setting resolution is 100kHz. Furthermore, the average noise level of -110dBm (typical) provides a wide dynamic range and the reference level can be set in 1 dB step. 5 Abundant functions Measuring fun

5、ctions Channel power measurement Adjacent channel power measurement Occupied bandwidth measurement Electric field strength measurement Magnetic field strength measurement Calculation functions MAX HOLD MIN HOLD AVERAGE OVER WRITE Marker and peak search Save / Load Electric field strength meas. Optim

6、um for measurement of cellular phone and wireless LAN working environment. Magnetic field strength meas. Optimum for EMI design of PCBs and for evaluation of signal quality. 6 Auto tuning The center frequency is set at the spectrum of the maximum level in the 3.3GHz band, and in addition, optimum re

7、ference level, resolution bandwidth, video bandwidth and sweep time are set when the AUTO TUNE key is pressed. This function is very convenient for measurement of an unknown signal. 7 Auto range operation The resolution bandwidth, video bandwidth and sweep time are automatically set based on the fre

8、quency span. It is also possible to set auto range operation only one or two out of resolution bandwidth, video bandwidth and sweep time. 8 Hard copy of the image Connect a printer (PT 2650 optional) and press the PRINT key on Model 2650. The image on the screen is printed as it is. 9 High resolutio

9、n display on the PC screen The spectrum waveform is displayed at high resolution, 1000 points in the horizontal axis, on the PC screen when PC Software AK 2650 (optional) is used. Model 2650 is a compact, lightweight, high per- formance spectrum analyzer that provides signal analysis and functionali

10、ty comparable to larger bench type models. RadioFans.CN 收音机爱 好者资料库 3 Measuring functions2650 Channel power measurement Measures the sum of the power in the zone specified by the zone center and zone width (slash area in figure). In short, it is possible to measure the total power in the specified fr

11、equency band. Of course it is possible to measure the noise power. Adjacent channel power measurement Capable of measuring the adjacent channel power leakage as the ratio of the power in the range specified by offset frequency and bandwidth (slash area in figure) to the carrier wave power. Both the

12、upper and lower side power leakage are measured. Furthermore, the method for meas- urement may be selected out of three methods, i.e., total power method, reference level method and in- band method, from the classification of definition of carrier wave power. Magnetic field strength measurement Mode

13、l 2650 is capable of precisely measuring the magnetic field distribution on an LSI or a printed circuit board using magnetic field probe PR 26M (optional) As the magnetic field detection portion of PR 26M is of a shield- ed loop structure that adopts glass ceramic multi-layer board technology of exc

14、ellent high frequency characteristics, it is pos- sible to take measurement at high reproducibility by detecting magnetic field components only. The measuring frequency range is as broad as 10MHz to 3GHz, and the measured value is calibrated in the instrument. Evaluation of effectiveness of the bypa

15、ss capacitor located at the power supply terminal of an LSI and evaluation of wiring rule on a printed circuit board can be raised as typical use of PR 26M. PR 26M is not affected by adjacent patterns because of high space resolution. Occupied bandwidth measurement It is possible to measure the occu

16、pied frequency bandwidth as the bandwidth of the point that is lower by X (dB) than the peak level or as the bandwidth of the point of Y (%) of the total power. 4 Electric field strength measurement It is possible to measure the electric field strength by connecting dipole antennas (optional) to the

17、 input connector. A dipole anten- na that suits the use is available. AN301 is mainly for PDC 800MHz and GSM 900MHz band, AN302 is mainly for PDC 1500MHz band, AN303 is mainly for PHS, W-CDMA and GSM 1800 / 1900MHz band, and AN304 is mainly for 2.4GHz wire- less LAN and Bluetooth. AN304 is capable o

18、f measuring direct sequence spread spectrum, frequency hopping and Bluetooth system by 10 ms sweep time and MAX HOLD function. Measuring functions2650 The conventional method cover- ing low frequency through high frequency with a single antenna results in low antenna gain because of using a range de

19、viat- ing from the antenna resonance point, and the dynamic range largely worsens as a result. Model 2650, however, provides an antenna for each frequency band and uses a resonance point of high gain only, and accordingly, it is capable of securing a wide dynamic range. Antennas of other bands will

20、be also pre- pared if requested. As the electric field strength is calibrated for each antenna in Model 2650, it is possible to directly read the measured value. 5 Marker and peak search2650 Marker measurement Two different modes are available for marker measurement. One is normal marker mode to mea

21、sure and display the fre- quency (maximum effective number of digits : 7) and level (max- imum effective number of digits : 3) of the marker point, and another is delta marker mode to measure and display the fre- quency difference and level difference between two markers (one of which is a reference

22、 marker). Normal peak search Zone peak search Peak search Two different modes are available for peak search. One is nor- mal peak search mode to search for the peak level with all of 10div of the frequency axis as the search range, and another is in-zone peak search mode to search for the peak level

23、 in the range specified by the center value and width. NEXT search (search for the next smaller level) of up to 9 is permitted in the normal peak search mode. The marker moves to the peak level at each sweep in the in-zone peak search mode. Normal marker measurement Delta marker measurement 6 Auto t

24、uning2650 Auto range2650 Save / Load2650 The search for the signal of the maximum level in the 3.3GHz band is executed and the result is displayed in the specified fre- quency span when the AUTO TUNE key is pressed. The spec- trum is tuned to the vicinity of the center of the screen, and the referen

25、ce level, resolution bandwidth, video bandwidth and sweep time are automatically set at optimum values. This function is very convenient when used for measurement of an unknown signal. Resolution bandwidth, video bandwidth and sweep time are set automatically based on the specified frequency span. F

26、urthermore, it is also possible to automatically set one or two of either resolution bandwidth, video bandwidth and sweep time. The operator is released from troublesome operation because these three parameters that accompany the frequency span are set automatically. It is possible to save 100 trace

27、s and 100 setups. Using the optional AK 2650 software and interface cable. This function may be used when various data are acquired and they are eval- uated later, or when it is wanted to make a comparison with for- merly acquired data. The saved traces and setups can be trans- ferred to a PC throug

28、h RS-232C. Detects the maximum level in the full span Displays the result in the specified frequency span 7 Hard copies of the image on the screen can be produced if a printer (model PT 21650, optional) is connected, using the RS- 232C port. Printing begins when the PRINT key is pressed. The printer

29、 is of dual power supply scheme, i.e., AC adaptor and battery, and it is possible to easily produce hard copies of measured data even outdoors where no AC power supply is available. The operating time of the battery-powered printer is about 30 minutes (when used continuously), and it is possible to

30、produce about 80 hard copies of images on the screen. Hard copy of display2650 High resolution display on the PC screen2650 Although the spectrum is displayed by 250 points on the hori- zontal axis on the spectrum analyzer screen, it is fetched by 1000 points per sweep in the instrument. When PC Sof

31、tware (AK 2650, optional) is used, all of these 1000 points are trans- ferred to a PC (the maximum transfer rate is 38,400 bps) and are displayed on the PC screen. The image, therefore, becomes clearer. Furthermore, setup of spectrum analyzer can be made from the PC side Spectrum Analyzer Printer Pr

32、int 8 Calculation functions2650 Max hold The update spectrum data is compared with that of last time for each point of the X-axis, and the larger one is retained and dis- played. The number of times of sweep can be set in the range from 2 to 1024 times by steps, which is a power of 2, or by infi- ni

33、te. It is possible to observe burst signal and frequency drift. Average Simple averaging processing is executed at each sweep. The number of times of averaging can be set from a range of 2 to 256 times by steps, which is a power of 2. The signal compo- nents buried in the noise can be measured. Over

34、 write The image on the screen is not cleared for each sweep, and overwriting display is executed. It is, therefore, possible to observe the process of changes in the signal. Min hold The update spectrum data is compared with that of last time for each point of the X-axis, and the smaller one is ret

35、ained and displayed. The number of times of sweep can be set in the range from 2 to 1024 times by steps, which is a power of 2, or by infinite. 9 Standard accessories2650 Optional accessories2650 Specifications for optional accessories2650 AC Adaptor Dipole antenna Magnetic field pole Soft carrying

36、caseAccessory pouch Fuse Operating manual AN 301AN 302AN 303AN 304AN 305 PR 26M Coaxial adaptor kit CT 2701 SMA to BNC Connector AD 26 (with dedicated double shielded coaxial cable) SMA coaxial cable DC to10GHz(VSWR1dBi1dBi1dBi1dBi1dBi VSWR1.51.51.51.51.5 Dimensions7.5 x 250mm7.5 x 250mm7.5 x 250mm7

37、.5 x 250mm7.5 x 250mm Weight (approx.)20g20g20g20g20g Printer ItemsSpecifications Printing methodThermal serial dot method Paper80mm width thermal paper Power sourceinternal: alkaline battery (4pcs) External: DC6V/1.5A Dimensions (WxHxD)134 x 58 x 180mm Weightapprox. 550g (mainframe only) Magnetic F

38、ield Probe Model PR 26M ItemsSpecifications Frequency Range10MHz to 3GHz Space Resolutionapprox. 0.25mm (depending on objects) DimensionsOutside: 12 x 135mm Probe tip: 2mm (W) x 1mm (T) ConnectorSMA(P) Frequency Section Frequency range50kHz to 3.3GHz Center frequency Setting resolution100kHz (Allows

39、 rotary encoder, numeric key and function key) Accuracywithin (30+100T)kHz1dot T : Sweep time (s) (frequency span: 200kHz to 10MHz, RBW : 30kHz, 23 5C) within (100+700T)kHz1dotT : Sweep time (s) (frequency span : 20MHz to 3.3GHz, RBW : 100kHz, 23 5C) RBW frequency within 6% of RBW (RBW : 3kHz, 30kHz

40、) errorwithin 30% of RBW (RBW : 100kHz to 3MHz) Frequency span Setting range0Hz (zero span), 200kHz to 2GHz (1-2-5step) and 3.3GHz (full span) Accuracywithin 3% 20TkHz 1dot (Frequency span : 200kHz to 10MHz, 23 5C) within 3% 200TkHz 1dot (Frequency span : 20MHz to 3.3GHz, 23 5C)T : Sweep time (s) Di

41、splay resolution Frequency span/250 Frequency span/1000 (only the measurement by RS-232C communication) Display dot 251dots, 1001dots (only the measurement by RS-232C numbercommunication) (The unit displays data in 251 horizontal dots, but it internally captures the trace in 1001 dots) Resolution ba

42、ndwidth 3dB bandwidth Setting range3kHz to 3MHz (1-3step) and AUTO Accuracywithin 20% Selectivity1 : 12 (typical, 3dB : 60dB) Video bandwidth100Hz to 300Hz (1-3step), OFF and AUTO SSB Phase noise-90dBc / Hz (typical, 100kHz offset, RBW : 3kHz, VBW 100Hz,Sweep time : 0.3s) Spurious response less than

43、 -60dBc Harmonicsless than -40dBc (50kHz to100MHz) less than -45dBc (100MHz to 3.3GHz) Amplitude Section Reference level Setting range+10 to -40dBm (1dB step) Accuracywithin 0.8dB 1dot (center frequency : 100MHz, RBW : 3MHz, VBW : OFF, ATT : 0dB, 23 5C) UnitdBm, dBV, dBmV, dBV, dBV/m, dBA/m (dBV/m a

44、nd dBA/m is used the measuring function) Average noise -110dBm (typical, center frequency : 100MHz RBW : 3kHz, levelVBW : 100Hz) Frequencywithin 2.0dB 1dot (50kHz to100MHz) Characteristicwithin 1.0dB 1dot (100MHz to 3.3GHz) Input impedance50ohm Input VSWRless than 2.0 Input attenuator Operating rang

45、e0 to 25dB (1dB step), coupled with reference level Switching errorwithin 0.6dB RBW switching error within 0.6dB Display resolution 0.4dB (10dB/div), 0.08(2dB/div) Display dot number 200dot Display scale Scale10dB / div, 2dB / div Accuracy within 0.2dB / 2dB 1dot within 0.8dB / 10dB 1dot within 1.6d

46、B / 70dB 1dot Input damage level +20dBm (CW average power), 25VDC Input connectorSMA (J) Sweep Section Sweep time Range10ms to 30s (1-3step, frequency span : 0 to 2GHz) and AUTO 30ms to 30s (1-3step, frequency span : full span) and AUTO Accuracywithin 0.1% 1dot ( frequency span : 0 to 2GHz) within 1

47、.5% 1dot ( frequency span : full span) Trigger modeAUTO (frequency span : zero span) Detection modePositive peak, Negative peak, Sample (when sweep time is 10ms or 30ms, only Sample can be set) Functions MarkerNORM : displays frequency (7 digits max) and level (4 digits max) at marker point. DELTA :

48、 displays difference frequency and level between 2 markers. Peak searchNORM : searches a peak point within 10div. Available NEXT peak (10max). ZONE : searches a peak point within a zone designated by center and width. Marker moves to a peak point each sweep. CalculationNORM, MAX HOLD, MIN HOLD, AVER

49、AGE, OVER WRITE * MAX/MIN HOLD : 2 to 1024 times, AVERAGE : 2 to 256 MeasuringChannel power, Adjacent channel power, Occupied frequency bandwidth, Electric field strength (needs optional antenna), Magnetic field strength (needs optional magnetic field probe) measurement. AUTO tuningWhen pressing AUTO TUNE key, the maximum level spectrum within 3.3GHz bandwidth is adjusted to center, and reference level, RBW, VBW and sweep time are adjusted to optimum values. Save / Load SaveSaves 100 traces and 100 setups LoadLoads 1 trace and 1 setup General Comm