Bk-precision 2658A - Manual Manual de usuario

v 092711 Model 2650A/2651 Series 3.3 GHz/8.5 GHz Spectrum Analyzer USER MANUAL

4 2. Specifications 2.1 Performance  Frequency section 2650A, 2652A, 2651 2658A Frequency range 50 kHz to 3.3 GHz 50 kHz to 8.5 GHz ――― Freq

5  Amplitude section 2650A, 2652A, 2651 2658A Reference level Setting range +10 to -60 dBm (1dB step) Accuracy within ± 0.8 dB ± 1 dot @ cente

6 External trigger Input voltage range Frequency range Input coupling Trigger level Input RC Input damage level Input connector 1 to 1

7  Other 2650A, 2652A, 2658A, 2651 common Operating temperature 0 to 50° C (guaranteed at 23±10 °C, without soft carrying case) Operating humidity

8 3. Explanation of Panel 1) TFT display This is a large liquid crystal display with 640 (H) x 480 (V) dots. It simultaneously displays spectrum

9 The center frequency is set with this key. The setting range is 0 to 3.3 GHz (for 2650A, 2652A, and 2651), and 0 to 8.5 GHz (for 2658A). The settin

10 14) Marker & Peak search key This key is used for setting marker or peak search. 15) Save/Load key Used for saving or loading a spectrum or s

11 4. Explanation of Screen Function Menu UNCAL **UNCAL Display Remaining Battery Display Spectrum Display 10div x 10 div Active Area Display

12 5. Function Menu 5.1 List of Function Menu The function menu is shown in the table below. For descriptions of each function, see their respectiv

13 5.2 Menu Tree The following is the sequence of selection for the function menu. The function menu corresponds to the function key of F1 to F6.

i Before Using the Product · Please note the following described on the back panel. · For safe use: 1) When abnormal sound, abnormal smell or sm

14 * T.G. MODE is only for 2658A. * Refer to “13. Sweep Axis / Detection Mode” for details. SWEEP TIME AUTO MANUAL ALL AUTO SWEEP : Set the

15 * “SPR. FR” is only for 2658A. * Refer to “16. Calculation Function” for details. NORMAL MAX HLD 256 MIN HLD 256 CA

16 * Refer to “18. Save / Load” for details. SAVE/LOAD PRE SET RETURN RETURN MODE SELECT LOAD SAVE DELETE DEVICE MEM USB : Set the address to s

17 * Refer to “19. Measuring Function” for details MEAS MEAS OFF MEAS OFF MEAS OFF CH POWER ACP OBW E/F ANT M/F PROBE Freq COUNT MODE BAND BAND

18 * Refer to “24. Utility Function” for details UTIL LABEL MENU OFF BUZZER ALARM CLOCK CONFIG 012 abc ABC @%* YEAR 08 MONTH JUN DATE 30 : Se

19 6. Preparing for Operation 6.1 Stand Utilize the stand on the back to use the screen in an easier-to-see angle on the desk. 6.2 Connection to

20 6.3 Battery Charge When the unit is powered off and connected to AC adaptor MA400, the battery will be charged. The charging conditions are indic

21 7. Center Frequency <FREQ> When is pushed, the following function menu is displayed. 7.1 Setting with step

22 7.3 Setting with numeric key 1. When is pushed, the following function menu is displayed. 2. ,

23 6. Cancel of Ten Key Mode By pushing or , unit will return to function menu. 7.4 According to Mar

ii · Set clock function The time information is set at Japan standard time. Set the year, month, day and time when the 2650A series is used for the f

24 4. When is pushed and then the setting is FULL or ZERO span, the frequency span is returned to the last setting. 5. By p

25 9. Reference Level <REFER> When is pushed, the following function menu is displayed. 9.1 Setting of Reference Level

26 * If the unit is changed to dBμV, dBmV, dBV or dBm, the offset is automatically changed. 2. By pushing , the step size of offset

27 * When the reference level is set below “Minimum”, “*S/W AMP” is displayed in Amplitude axis setting values display area on the screen. Calculatio

28 * When the input signal level is higher than the proper level for 1st mixer’s terminal, harmonics distortion and spurious are generated. This pro

29 10. Display Scale <SCALE> When is pushed, the following function menu is displayed. 10.1 Setting the Functi

30 11.2 AUTO Mode By pushing , the optimum RBW is set based on the frequency span and sweep time. * When AUTO mode is set,

31 12.3 ALL AUTO Mode By pushing , the optimum RBW, VBW and sweep time are set based on the frequency span. * When ALL AUTO mode is set, “*”

32 By pushing , the detection mode is set. POS SMPL NEG POS (Positive Peak): The maximum value of the samp

33 16. Calculation Function <CALC> When is pushed, the following function menu is displayed. * By pushing

iii Contents 1. OUTLINE -------------------------------------------------------------------------------------- 1 1.1 PRODUCT OUTLINES --------------

34 2. The update spectrum data is compared with the data left last time at each point, and the smaller one is retained and displayed. 2 4

35 * Differing from base band at which the up-conversion of input frequency is done with a frequency mixer, the spurious response peculiar to band 1

36 17.1 Movement and Basic Function of Marker 1. By rotating , the marker moves. 2. By pushing , the normal marker mode is

37 At the Zone mode, the marker automatically moves to the maximum peak point within the range set beforehand. When entering this mode, the zone is

38 18.1 Selection of Storage Device 1. When is pushed, the built-in flash memory is selected as a storage device. When

39 18.2 Save Function When is pushed, SAVE menu is displayed as follows. 1. In this function, the data is stored in the built-in memo

40 2. If the label is not named, “2650A” will be the first part of the file name instead. For example: 2650A_SP001.csv 3. About file name at the

41 * When PARAM is selected, setting parameters are loaded. * When the spectrum is loaded, the 2650A series enters HOLD state and the current spe

42 19. Measuring Function <MEAS> When is pushed, the following function menu is displayed. The measuring function can be se

43 • BAND mode [ By pushing (MODE), BAND mode is selected.] The sum of power in the band specified by band center and bandwidth is

iv 12. VIDEO BANDWIDTH <VBW> ------------------------------------------------------ 30 12.1 MANUAL MODE ---------------------------------------

44 * The measured value and the setting parameter are displayed at the lower part of the screen. • Definition of Reference Carrier for each Mode

45 19.3 Occupied Bandwidth Measurement <OBW> It is possible to measure the occupied frequency bandwidth defined as the width of points at N(%

46 [Specifications of dipole antenna (The antenna gain and VSWR are specified at the center of frequency range.)] * When M405 is use

47 * “E/F M40X” or “E/F USER” is displayed in MEAS area on the screen. * “USER” is the original compensation data which is created by the user. (Refe

48 M404 (2.4 GHz, E plane) Antenna gain vs. Frequency M403 (2 GHz, E plane) Antenna gain vs. Frequency 0.511.522.533.544.555.51.7 1.8 1.9 2 2.1

49 19.5 Magnetic Field Strength Measurement <M/F PROBE> The magnetic field distribution can be measured by using the magnetic field probe

50 “Specifications of magnetic field probe CP-2S” (Refer to the operating manual of CP-2S for the details.) • Mode Selection and Measuremen

51 19.6 Frequency Counter <FREQ COUNT> This function currently not supported. 20. EMI Test (2651) 20.1 Additional Function for EMI Test D

52 20.2 EMI Test The QP detection is usually used in both of the radiated and conducted emission measurements, and the AV detection is usually used

53 7. Moreover, measure the frequency detected in the above with QP or AV detection, then the SPAN is 200 kHz and the SWEEP is 10 sec. Radiated Emis

v 22. TRACKING GENERATOR MODE (2652A) ------------------------------------ 55 22.1 SPECIFICATION OF T.G. FUNCTION -----------------------------------

54 EMI standards (selected) Frequency Quasi Peak Average CISPR22 class A Limits of conducted disturbance at mains ports 0.15 MHz to 0.50 MHz 0.50

55 21.1 Setting Screen Display Color When is pushed, the color of screen display can be selected. COLOR1 COLOR2

56 22.2 Description of I/O Connector 1) Input connector N (J) connector Input for an external signal Make sure that the total power of input sig

57 2. Each time is pressed, T.G. output is alternately switched to ON or OFF. 22.4 Normalizing Function NORM ON: The input

58 23. Storage/Print Screen Image <COPY> The following function menu is displayed when is pushed. 23.1 Selection of Image Area

59 ※ Once you disconnect, then reconnect the same or a different USB flash memory drive, the 2650A series will not automatically recognize the new U

60 * Turn on the power of the 2650A/2651 series unit first. After that, turn on the power of USB printer. Otherwise, it will not work correc

61 24. Utility Function <UTIL> When is pushed, the following function menu is displayed. Label Function : Enters the l

62 4. When is pushed, the cursor position will move left by one character. To change the character, turn the encoder. To delete,

63 1. By rotating , the values for a selected parameter (choosen by pressing any button between F1 and F5) can be changed. 2. Used to

1 1. Outline 1.1 Product outlines The 2650A series are authentic spectrum analyzers in a compact and lightweight form factor providing performance

64 25. USB Device Function 25.1 Outline The 2650A/2651 series is equipped with two kinds of USB connecters; A and B plugs. The A plug is for USB ho

65 25.5 Explanation of Command * “CR(0D[HEX])+LF(0A[HEX])” is added to the end of every command. When the command is sent from PC, 2650A/2652A/2651

66 6) Setting RBW Command : RBW* * * 2650A, 2652A, 2658A : ( * * * * = 3K, 10K, 30K, 100K, 300K, 1M, 3M, AUTO, ALL [ unit : Hz ]) 2651 : ( * * * *

67 10) Setting mode for channel power measurement Command : CPMODE* * * * * * * ( * * * * * * * = TOTAL, BAND) Example: CPMODETOTAL Query: CPMODE?

68 ( * * * * * * *: = 0-500: screen position, center = 250) Example: ACPREF250 Query: ACPREF? 17) Setting reference bandwidth for adjacent chan

69 23) Setting probe for magnetic field strength measurement Command : MFPROBE* * * * ( * * * *: CP2S / USER) Example: MFPROBECP2S Query: MFPROBE?

70 30) Setting display scale Command : SCALE* * ( * *: 2 / 5 / 10 ) Example: SCALE10 Query: SCALE? 31) Setting sweep time Command : SWEEP* * *

71 37) Setting marker mode Command : MKR* * * * * ( * * * * *: NORM / DELTA) Example: MKRDELTA Query: MKR? 38) Setting marker position by

72 44) Setting unit of marker Command : CONV* * * ( * * *: DBM / W / DBV / V / DBUVM / VM) Example: CONVDBUVM Query: CONV? 45) Request print o

73 * When the remote control is ON, “REMOTE” is displayed in the operating information area on the screen. ( Refer to “4. Explanation of Screen” f

2 10) Abundant functions ● Measuring functions : Channel power, Adjacent channel power, Occupied bandwidth, Electric field strength, Magnetic f

74 57) Setting tracking generator Command : TG* * * ( * * *: ON / OFF) Example: TGON Query: TG? 58) Setting normalizing function Command : NORM*

75 The spectrum data outputs as a numeric string separated by commas “,”. [**.**, **.**, ……, **.**] The unit is dBm, and it is available up to two d

76 Create a new text file, and open it with a text editor. Write the frequency and compensation data in the following format. * Format “frequency”: ”

77 In the following context, the antenna gain means an absolute gain. When the antenna gain is a relative gain, it can change into an absolute gain b

78 27. Basic Performance Test (2650A/2651/2652A/2658A) To keep the quality of the unit, regular performance testing is recommended. This section des

79 27.2 Accuracy of Reference Level Adjust the output level of the calibration unit so that the displayed value of this unit is the 0th div from th

80 27.4 Display Accuracy of Frequency Span Adjust the frequency of the calibration equipment so that the peaks are at the positions of f1 and f9, an

81 Center frequency : 100 MHz Frequency : 100 MHz Reference level : -15 dBm Frequency span : 10 MHz RBW : 3 MHz VBW : 1 MHz Sweep tim

82 SERVICE INFORMATION Warranty Service: Please go the support and service section on our website www.bkprecision.com to obtain a RMA #. Return the

83 22820 Savi Ranch Parkway Yorba Linda, CA 92887 www.bkprecision.com © 2009 B&K Precision Corp. Printed in Japan

3 1.4 Overview of all four models Model Contents 2650A 50 kHz to 3.3 GHz Applications: Cellular phone, 2.4 GHz wireless LAN, 2.5 GHz WiMAX, RF-ID