Model 2650A/2651 Series 3.3 GHz/8.
Before Using the Product · Please note the following described on the back panel. · For safe use: 1) When abnormal sound, abnormal smell or smoke is found, stop using the product and remove the battery and AC adapter. 2) Never handle this product with wet hands to prevent risks of electric shock, fire, or damage. 3) Never use this product under lightning conditions to prevent risks of damage. 4) Never use any AC adapter other than specified, or it will cause damage.
· 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 first time. (Refer to “24.4 Setting the clock” for the details.) · Quality assurance Warranty If the defect by our responsibility occurs within one year after delivered, it shall be repaired free of charge. However, this warranty does not cover such defect that : 1) is caused by a fire or natural disasters.
Contents 1. OUTLINE --------------------------------------------------------------------------------------1 1.1 1.2 1.3 1.4 2.
12. 12.1 12.2 12.3 13. 13.1 13.2 13.3 13.4 13.
22. 22.1 22.2 22.3 22.4 23. 23.1 23.2 23.3 23.4 23.5 23.6 24. 24.1 24.2 24.3 24.4 25. 25.1 25.2 25.3 25.4 25.5 25.6 25.7 25.8 TRACKING GENERATOR MODE (2652A) ------------------------------------ 55 SPECIFICATION OF T.G. FUNCTION ------------------------------------------------------ 55 DESCRIPTION OF I/O CONNECTOR------------------------------------------------------- 56 ON/OFF SWITCHING OF T.G.
1. Outline 1.1 Product outlines The 2650A series are authentic spectrum analyzers in a compact and lightweight form factor providing performance and functions comparable to large-size bench type instruments. The features are as follows. 1) Compact and lightweight 1.8 kg. The dimensions are 162(W)×71(H)×265(D) mm, and the weight is only 1.8 kg including the battery, making the instrument very convenient for field use. 2) Large color TFT display 5.
10) Abundant functions ● Measuring functions : Channel power, Adjacent channel power, Occupied bandwidth, Electric field strength, Magnetic field strength and Frequency measurement. ● Calculation functions : Max hold, Min hold, Averaging, Over write ● Marker measurement and peak search function ● Save/Load function ● Hard copy with printer 11) PC Software The included PC software controls all four models of the 2650A/2651 series via PC.
1.4 Overview of all four models Model 2650A 2658A 2652A 2651 Contents 50 kHz to 3.3 GHz Applications: Cellular phone, 2.4 GHz wireless LAN, 2.5 GHz WiMAX, RF-ID, Broadcasting 50 kHz to 8.5 GHz Covering most of the wireless communication frequency spectrum Applications: 5 GHz wireless LAN, 3.5/5.8 GHz WiMAX, Maintenance of wireless base station 50 kHz to 3.3 GHz With 5 MHz to 3.
2. Specifications 2.1 Performance Frequency section Frequency range Center frequency Setting resolution Accuracy RBW frequency error Frequency span Setting range Accuracy Display resolution # of points per trace Resolution bandwidth 2650A, 2652A, 2651 50 kHz to 3.3 GHz 2658A 50 kHz to 8.5 GHz ――― Frequency range 50 k to 3.5 GHz 3.3 G to 6.3 GHz 6.1 G to 8.
Amplitude section 2650A, 2652A, 2651 Reference level Setting range Accuracy 2658A +10 to -60 dBm (1dB step) Frequency characteristics Input impedance within ± 0.8 dB ± 1 dot @ center frequency : 100 MHz, RBW : 3 MHz, VBW : 1 MHz, REF : -15 dBm, 23±5 °C dBm, dBV, dBmV, dBμV, dBμV/m, dBμA/m (dBμV/m and dBμA/m are used for measurement functions) -127 dBm (typical) @ CF : 1 GHz, RBW : 3 kHz, VBW : 100 Hz, Ref. level < - 40dBm ( preamp automatically ON) within ±2.0 dB ±1dot @50 kHz to 100 MHz within ±2.
External trigger Input voltage range Frequency range Input coupling Trigger level Input RC Input damage level Input connector Detection mode Positive peak, Negative peak, Sample ( QP and AV for model 2651 only.) Function Save 2650A, 2652A, 2658A, 2651 common NORM：displays frequency (8digits max) and level (4digits max) at marker point. DELTA：displays frequency difference and level difference between two markers.
Other 2650A, 2652A, 2658A, 2651 common 0 to 50° C (guaranteed at 23±10 °C, without soft carrying case) less than 40 °C/80 %RH (guaranteed at less than 33 °C/70 %RH, without soft carrying case) Storage temperature -20 to 60 °C, less than 60 °C/70 %RH Dimensions 162(W) x 71(H) x 265(D) mm , 6.38 (W) x 2.80 (H) x 10.43 (D) inch (excluding projections, protection bumper and stand) Weight approx. 1.
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 (10div x 10 div), various setting parameters and measured values. 2) Function key (F1 to F6) The function can change according to the operation key.
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 setting resolution is 20 kHz. 4) Frequency span key The frequency span is set with this key. For 2650A, 2652A, and 2651, it is set in the range from 200 kHz to 2 GHz, ZERO SPAN or FULL SPAN (3.3 GHz). For 2658A, it is set in the range from 200 kHz to 5 GHz, ZERO SPAN or FULL SPAN (8.5 GHz). 5) Reference level key The reference level is set with this key.
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 settings parameters. 16) Copy key This key allows the screen image to be printed on USB printer (option) or stored in USB memory. 17) UTIL key Used for setting label entry, clock, and buzzer. 18) Display control key Used for setting color, backlight ON/OFF or brightness of backlight. 19) Rotary encoder This is used for adjusting settings and parameters.
4.
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 respective page. For the sequence of selection for the function menu, refer to “5.2 Menu tree”.
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. “Function menu” FREQ E/F M/F FREQ PROBE COUNT CH POWER ACP OBW ANT F1 F2 F3 F4 KeyStep EncStep SET Ten Key 100 MHz 10 MHz MKR MODE F5 F6 * Refer to “7. Center Frequency” for details. CENTER FREQ : Set the center frequency BACK GHz SPAN MHz CLEAR “.” SPACE RETURN * Refer to “8. Frequency Span” for details.
SCALE * Refer to “10. Display scale” for details. SCALE 10dB/ 2dB/ 5dB/ : Set the display scale RBW * Refer to “11. Resolution Bandwidth” for details. RBW MANUAL AUTO ALL AUTO : Set the RBW VBW * Refer to “12. Video Bandwidth” for details. VBW MANUAL AUTO ALL AUTO : Set the VBW * Refer to “13. Sweep Axis / Detection Mode” for details. SWEEP * T.G. MODE is only for 2658A. SWEEP TIME MANUAL AUTO ALL AUTO : Set the sweep time T.G. NORM ON ON 14 DET TRG T.G.
CALC * Refer to “16. Calculation Function” for details. * “SPR. FR” is only for 2658A. NORMAL MAX HLD MIN HLD AVG OVR WR SPR. FR 256 256 256 256 OFF : Set the number MKR * Refer to “17. Marker & Peak Search” for details.
SAVE/LOAD * Refer to “18. Save / Load” for details.
MEAS * Refer to “19. Measuring Function” for details CH POWER ACP OBW E/F M/F Freq ANT PROBE COUNT : Set the parameter MODE BAND BAND CENTER MEAS OFF WIDTH : Set the parameter ADJ CH MODE BAND OFFSET MEAS REFERENCE WIDTH CENTER WIDTH OFF : Set the parameter MODE RATIO % Enc Step MEAS N% 99.5% 1% OFF ANT MEAS M401 OFF Input the probe ID (first time only) *Refer to “19.5 Magnetic field strength measurement” for details.
DSPL COPY UTIL * Refer to “21. Screen Control” for details COLOR BACK LT BRIGHT COLOR1 ON 80 * Refer to “23. Storage/Print Screen Image” for details AREA PRINT Bmp->USB MEM->USB WHOLE EXECUTE COPY EXECUTE * Refer to “24.
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 power supply The AC adapter MA400 is used to power the instrument and for charging the MB400 battery. (Charging starts automatically if the AC adapter is connected and unit is power-off.) Connect the adapter as in the figure below and connect the AC plug to the power line (100-240 VAC, 50/60 Hz).
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 indicated by two colors LED , and they correspond to the table below. Charging condition On Charge Completion of Charge No battery Abnormal Color of LED Red Green Green Blinking Red Good usage of battery Remove the battery when unit is connected to the AC adaptor. Otherwise, battery life will be shortened. ※LED is turned off at power-on.
7. Center Frequency When is pushed, the following function menu is displayed. FREQ CENTER FREQ KeyStep EncStep SET Ten Key ← → 100M 0.1M MKR Mode F1 F2 F3 F4 F5 F6 * Center frequency setting range: 0 to 3.3 GHz for 2650A/2652A/2651, 0 to 8.5 GHz for 2658A * The center frequency may shift for a while (up to 10 sec.), after setting is changed. 7.1 Setting with step keys ( [F1], [F2] ) 1. When F1 is pushed, the center frequency decreases in the set step size. 2.
7.3 Setting with numeric key F6 1. When is pushed, the following function menu is displayed. BACK 2. GHz MHz “.” CLEAR SPACE RETURN F1 F2 F3 F4 F5 F6 F1 , F4 and and F2 F5 correspond to , and <. > F3 correspond to and . Changing the center frequency by encoder is available in Ten Key Mode. 3. The center frequency can be entered directly according to “Numeric Key Mapping Diagram” as follows.
6. Cancel of Ten Key Mode FREQ By pushing F6 or , unit will return to function menu. 7.4 According to Marker Position F5 When is pushed, the center frequency is set according to the frequency of current marker position. * Any figures below the setting resolution (20 kHz) will be truncated. * When the marker is not displayed, this operation is invalid. (The menu option disappears.) 8. Frequency Span SPAN When is pushed, the following function menu is displayed.
4. When is pushed and then the setting is FULL or ZERO span, the frequency span is returned to F1 the last setting. 5. By pushing F4 ~ F6 , the frequency span in function menu is set. 8.1 Switching Frequency Band 2658A has three frequency bands. Frequency band Base band Measured frequency range 50 kHz to 3.5 GHz Band 1Band 1+ 3.3 GHz to 6.3 GHz 6.1 GHz to 8.5 GHz The frequency band is automatically set to the appropriate band based on the center frequency and span.
9. Reference Level When REFER is pushed, the following function menu is displayed. UNIT RL STEP OFS STEP OFFSET OFSdB IMP dBm 1dB 1dB OFF 0.0 50Ω F1 F2 F3 F4 F5 F6 9.1 Setting of Reference Level By rotating , the reference level is changed. (Refer to “9.7 Reference Level Setting Range for Each Unit” for details.) 9.2 Change of Unit of Amplitude Axis F1 When is pushed, the unit is set as follows. dBμV dBm dBmV dBV 9.
* If the unit is changed to dBμV, dBmV, dBV or dBm, the offset is automatically changed. F3 2. By pushing , the step size of offset is changed. (10 dB, 1 dB, 0.1 dB) 9.6 Setting of Input Impedance By pushing F6 , the input compensation can be set to 50 Ω (no offset) or 75 Ω. (5.6 dB offset compensation) The reference level is adjusted automatically, based on the input impedance selection. When the input impedance is set to 75 Ω, the reference level is displayed including offset and conversion of 75Ω.
* When the reference level is set below “Minimum”, “*S/W AMP” is displayed in Amplitude axis setting values display area on the screen. Calculation formula (conversion from dBm) ● A[dBμV] = 107 + X [dBm] ● B[dBmV] = 47 + X [dBm] ● C[dBV] = -13 + X [dBm] ● D[dBμV/m] = 68.8 / λ×√(X/Gar) [dBm] λ : Wavelength[m] Gar : Antenna absolute gain[times] ● E[dBμA/m] = 107 + X + F[dBm] F : Probe calibration coefficient[dB] **changes depending on the frequency. 9.
5 20 0 -8 7 0 -21 15 21 -34 2 21 4 19 0 -9 6 0 -22 14 21 -35 1 21 3 18 0 -10 5 0 -23 13 21 -36 5 26 2 17 0 -11 4 0 -24 12 21 -37 4 26 1 16 0 -12 3 0 -25 11 21 -38 3 26 0 15 0 -13 2 0 -26 10 21 -39 2 26 -1 14 0 -14 1 0 -27 9 21 -40 1 26 -2 13 0 -15 0 0 -28 8 21 * When the input signal level is higher than the proper level for 1st mixer’s terminal, harmonics distortion and spurious are generated.
10. Display Scale When SCALE is pushed, the following function menu is displayed. SCALE 10div/ 5div/ 2div/ F1 F2 F3 F4 F5 F6 10.1 Setting the Function Key 1. By pushing F1 , 10 dB/div display scale is set. 2. By pushing F2 , 5 dB/div display scale is set. 3. By pushing F3 , 2 dB/div display scale is set. 11. Resolution Bandwidth When RBW is pushed, the following function menu is displayed. RBW MANUAL AUTO ALL AUTO F1 F2 F3 F4 F5 F6 11.
11.2 AUTO Mode F2 By pushing , the optimum RBW is set based on the frequency span and sweep time. * When AUTO mode is set, “*” is displayed on the right end of RBW setting value display. 11.3 ALL AUTO Mode F3 By pushing , the optimum RBW, VBW and sweep time are set based on the frequency span. * When ALL AUTO mode is set, “*” is displayed on the right end of each setting value display.
12.3 ALL AUTO Mode By pushing F3 , the optimum RBW, VBW and sweep time are set based on the frequency span. * When ALL AUTO mode is set, “*” is displayed on the right end of each setting value display. 13. Sweep Axis / Detection Mode When SWEEP is pushed, the following function menu is displayed. SWEEP DET TRIG T.G. MANUAL AUTO ALL AUTO SMPL INT MODE F1 F2 F3 F4 F5 F6 * T.G. MODE [F6] is only for 2652A. This menu is not displayed on 2650A, 2651 and 2658A.
F4 By pushing POS , the detection mode is set. SMPL NEG POS (Positive Peak): The maximum value of the sample points is detected. SMPL (Sample): The momentary value of the sample points is detected. NEG (Negative Peak): The minimum value of the sample points is detected. 13.5 Setting of Trigger Source By pushing F5 INT , the trigger source is set. EXT INT: The sweep is automatically repeated. This setting is normally used. EXT: When the signal over the trigger level (0.
16. Calculation Function When is pushed, the following function menu is displayed. CALC NORMAL MAX HLD MIN HLD AVG OVRWR SPRI FR * * * * 56 * * OFF F2 F3 F4 F5 F6 F1 * By pushing HOLD / RUN * By pushing F1 ~ , the sweep is restarted. F5 , the calculation function is selected. , the number of times of the sweep can be set. By rotating 16.1 NORMAL Mode F1 1. When is pushed, the normal mode is set. The calculation is not performed in this mode.
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 4 256 8 512 16 1024 32 * * 64 128 (infinite) * When this mode is set, “MIN --- (number of times)” is displayed in the CALC area on the screen. (Refer to “4. Explanation of Screen” for the details.) 16.4 AVERAGE Mode F4 1. By the operation of , the number of times of the sweep in the AVERAGE mode is set. 2. The simple averaging process is executed at each sweep.
* 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- and band 1+ is generated because the down-conversion is done at those two bands. * About SPURIOUS FREE mode 1. SPURIOUS FREE mode is a mode by which the spurious response peculiarly caused at band 1+ is simply deleted. 2. SPURIOUS FREE mode is especially effective in the measurement of a stationary wave. 3.
17.1 Movement and Basic Function of Marker 1. By rotating , the marker moves. 2. By pushing , the normal marker mode is selected and the marker operates as an independent F1 marker. The frequency and the level at the marker point are displayed in the lower right side. F2 3. When is pushed, the delta marker mode is selected, and the reference marker and the active marker are displayed. The frequency and the level at the marker points are displayed as follows; Frequency = (freq.
ZONE CENTER RETURN WIDTH F1 F2 F3 F4 F5 F6 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 displayed with thin blue shadow in the spectrum display area. The marker moves to maximum level within this zone at each sweep. The center of the zone can be adjusted by pressing F1 The width of the zone can be adjusted by pressing F2 Note: The marker does not move in HOLD. 17.
MODE SELECT PRE DEVICE SAVE LOAD DELETE MEM USB SET F1 F2 F3 F4 F5 F6 18.1 Selection of Storage Device 1. When When F4 F5 is pushed, the built-in flash memory is selected as a storage device. is pushed, the external USB memory is selected as a storage device. * Install the USB memory in USB A- plug on the right side firmly. Refer to the figure below.
18.2 Save Function When F1 is pushed, SAVE menu is displayed as follows. OBJECT SAVE PRE RETURN SET SPECT PARAMM BOTH EXECUTE F1 F2 F3 F4 F5 F6 1. In this function, the data is stored in the built-in memory or USB memory by CSV format. The data stored in USB memory can be used with a personal computer as a CSV file. “2650A_csvData” folder will automatically be created and the data will be stored in it as a file. 2. The object to be stored is selected with F1 , F2 or F3 .
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 time of storage When SAVE is selected, the file name is displayed in the active area following according to the above labeling convention. When SAVE is executed as it is, the data is stored with that file name. If the file exists in the storage device and is rotated left before SAVE is executed, those file names are displayed one by one.
* When PARAM is selected, setting parameters are loaded. * When the spectrum is loaded, the 2650A series enters HOLD state and the current spectrum disappears, replacing it with the loaded spectrum on main display. When HOLD/RUN is pushed right after, the loaded spectrum and a current spectrum are displayed together. 4. When is pushed, the loaded spectrum can be cleared on display. F5 18.5 Delete Function When F3 is pushed, DELETE menu is displayed as follows.
19. Measuring Function When MEAS is pushed, the following function menu is displayed. E/F M/F FREQ CH POWER ACP OBW ANT PROBE COUNT F1 F2 F3 F4 F5 F6 The measuring function can be selected as follows.
* “CP TOTAL” is displayed in MEAS area on the screen. * The measured value is displayed at the lower right corner on the screen. [Measuring Mode] • [Measured Value] F1 BAND mode [ By pushing (MODE), BAND mode is selected.] The sum of power in the band specified by band center and bandwidth is measured. * “CP BAND” is displayed in MEAS area on the screen. * The measured value and the setting parameter are displayed at the lower part of the screen. 1. By F2 (BAND ENTER) , the band center is set.
* The measured value and the setting parameter are displayed at the lower part of the screen. 1. By F2 (ACP OFFSET) , the offset frequency of adjacent channel is set. * The offset is from the center frequency of the reference carrier. 2. By F3 (ACP WIDTH) , the band width of adjacent channel is set. 3. By [Measuring mode] [Setting parameter] [Measured value] F4 (REFERENCE CENTER) , the center frequency of the reference carrier is set. * [F4] is only for TOTAL and BAND mode. 4.
19.3 Occupied Bandwidth Measurement F3 It is possible to measure the occupied frequency bandwidth defined as the width of points at N(%) of the total power (N% POWER), or as the width of points that are X(dB) lower than the peak level (XdB DOWN). • F1 N% POWER mode [ By pushing (MODE), N% POWER mode (N%) is selected.] The bandwidth of points at N(%) of the total power is measured. * “OBW N%” is displayed in MEAS area on the screen.
[Antenna connection] [Measurement environment] Antenna M401 M402 M403 M404 M405 M406 Connect to RF INPUT. 2650A series * Turn the back to the signal source. [Specifications of dipole antenna (The antenna gain and VSWR are specified at the center of frequency range.)] Items M401 M402 M403 M404 M405 M406 Type Sleeve Sleeve Sleeve Sleeve ¼ λ whip Sleeve Frequency range 0.8 to 1GHz 1.25 to 1.65GHz 1.7 to 2.2GHz 2.25 to 2.65GHz 300 to 500MHz 4.7 to 6.
* “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. (Refer to “25.8 Writing of Original Compensation Data” for the details.) * The spectrum may exceed the area on the screen depending on the antenna gain compensation. The unit of amplitude axis automatically changes into [dBμV/m]. * The optimum center frequency and frequency span are automatically set according to the antenna.
M402 (1.5 GHz, E plane) Antenna gain vs. Frequency M403 (2 GHz, E plane) Antenna gain vs. Frequency 5.5 5 ANT Gain (dBi) 4.5 4 3.5 3 2.5 2 1.5 1 0.5 1.7 1.8 1.9 2 2.1 2.2 Ｆｒｅｑｕｅｎｃｙ （GHｚ） M404 (2.4 GHz, E plane) Antenna gain vs. Frequency 5.5 5 ANT Gain (dBi) 4.5 4 3.5 3 2.5 2 1.5 1 2.25 2.35 2.45 Ｆｒｅｑｕｅｎｃｙ （GHｚ） 48 2.55 2.
M405 (horizontal plane) Antenna gain vs. Frequency M406 (5.4 GHz, E plane) Antenna gain vs. Frequency 3.5 ANT Gain (dB) 3 2.5 2 1.5 1 4.70 4.95 5.20 5.45 5.70 Frequency（GHz） 19.5 Magnetic Field Strength Measurement The magnetic field distribution can be measured by using the magnetic field probe CP-2S (option). 49 5.95 F5 6.
[Magnetic field probe connection] The tip of the magnetic field probe CP-2S is made of glass-ceramic board. Take care when handling the probe even though the strength of the glass-ceramic board is durable under normal operation. “Specifications of magnetic field probe CP-2S” (Refer to the operating manual of CP-2S for the details.) Item Specifications Frequency range 10 MHz to 3 GHz approx. 0.
19.6 Frequency Counter F6 This function currently not supported. 20. EMI Test (2651) 20.1 Additional Function for EMI Test Detection mode (Refer to “13.4 Setting of Detection mode”) SWEEP By pushing POS F6 SMPL NEG , the detection mode can be set. QP AV In the 2651, QP detection and AV detection are added for EMI measurement.
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 in the conducted emission measurement. The measurement time can be shortened by using them in the final measurement to the spectrums narrowed by the PK detection. Conducted Emission Measurement The conducted emission discharged through the power supply line is measured. In this measurement, LISN* (Line Impedance Stabilization Network) device is needed.
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 Emission Measurement The electric field strength of disturbance noise that EUT radiates in the air is measured. Antenna EUT 2651 1. Set the compensation data of the antenna beforehand. Refer to “25.8 Writing original compensation data” for the details. 2. Turn on the power of the 2651 after connection. 3.
EMI standards (selected) Frequency Quasi Peak CISPR22 class A Limits of conducted disturbance at mains ports 0.15 MHz to 0.50 MHz 0.50 MHz to 30 MHz 79 dBuV 73 dBuV CISPR22 class B Limits of conducted disturbance at mains ports 0.15 MHz to 0.50 MHz 0.
COLOR BACK LT BRIGHT COLOR1 ON 80 F1 F2 F3 F4 F5 F6 21.1 Setting Screen Display Color When F1 COLOR1 • • • is pushed, the color of screen display can be selected. COLOR2 MONO COLOR1 : For normal use COLOR2 : For printing screen MONO : Monochrome 21.2 ON/OFF Switching of LCD Backlight Use F2 button to toggle the backlight ON or OFF. 21.3 Adjusting Brightness of LCD Backlight Use F3 to set the brightness. It can be set in the range of 0 to 100. 22. Tracking Generator Mode (2652A) 22.
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 signals does not exceed +27 dBm. 2) Output connector N (J) connector It is an output terminal of Tracking Generator. *Please set to “TG : OFF” to prevent the influence of the leak from the Tracking Generator in case of disuse of the T.G. function.. 22.3 ON/OFF Switching of T.G. Function SWEEP When is pushed, the following function menu is display.
T.G. NORM ON ON F1 F2 2. Each time F1 F3 F4 F5 F6 is pressed, T.G. output is alternately switched to ON or OFF. 22.4 Normalizing Function NORM ON: The input level is made flat to the red line on the screen. 1. When SWEEP 2. When F6 is pushed, the same function menu as the previous item is displayed. is pushed, TG. MODE is set. F2 3. Each time is pushed, the normalizing function is alternately switched to ON or OFF.
23. Storage/Print Screen Image COPY The following function menu is displayed when is pushed. AREA PRINT Bmp → USB MEM → USB WHOLE EXECT COPY EXECT F1 F2 F3 F4 F5 F6 23.1 Selection of Image Area When F1 is pushed, the image area to be stored or printed can be selected. WHOLE : the whole screen image is stored or printed. SPECT : only the spectrum display area is stored or printed. 23.
※ Once you disconnect, then reconnect the same or a different USB flash memory drive, the 2650A series will not automatically recognize the new USB drive. After connecting the drive, you first must press the Save/Load, followed by F5 key (USB) in order for the 2650A to "see" the new drive, then proceed with copying data to the drive. 23.
USB B plug USB A plug Printer * 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 correctly. 23.6 USB Memory USB memory can be used as a removable storage.
24. Utility Function When UTIL is pushed, the following function menu is displayed. LABEL F1 MENU BUZZER CLOCK OFF ALWAYS CONFIG F2 F3 F4 F5 F6 F1 Label Function : Enters the label menu for customizing filename. F2 Menu Off : Turns off menu and active area display. F3 Buzzer Setting : Sets the condition of the buzzer sound. F4 Clock Function Setting : Sets the built-in clock. 24.
F5 4. When is pushed, the cursor position will move left by one character. To change the character, turn the encoder. To delete, press F5 again. Characters previously entered can be deleted by consecutively pushing F5. 5. When finished, press to exit the label menu. UTIL 24.2 Menu Off By pushing F2 , the display of the function menu and the active area can be turned off temporarily. 24.
1. By rotating , the values for a selected parameter (choosen by pressing any button between F1 and F5) can be changed. 2. F1 Used to set the year. Two last digits of the year are displayed. This can be set from 00 to 99. F2 Used to set the month. This can be set from 1 to 12. F3 Used to set the date. This can be set from 1 to 31. F4 Used to set the hour. It is displayed in twenty-four hour format. Values can be set from 1 to 24. F5 Used to set the minute. 3.
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 host and is connected to USB devices such as USB memory or printer. The B plug is for USB device and is connected to USB host such as a personal computer. The device function is explained in this chapter. As for the host function using USB A plug, refer to “23. Storage and print of screen image”. 25.
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 and 2658A return some responses, which include “OK” + CR + LF, “ERR” + CR + LF, or “(response to command)” + CR + LF. * By inputting “?” instead of “* *” for each command, the current setting parameters will be queried and a response of the value will be received by the PC. (Except for “ ---- Request” command and the command for inputting corrected data.
6) Setting RBW Command : RBW* * * 2650A, 2652A, 2658A : ( * * * * = 3K, 10K, 30K, 100K, 300K, 1M, 3M, AUTO, ALL [ unit : Hz ]) 2651 : ( * * * * = 3K, 9K, 30K, 120K, 300K, 1M, 3M, AUTO, ALL [ unit : Hz ]) * ALL : The optimum RBW, VBW, and sweep time are set based on the frequency span. * AUTO : The optimum RBW is set based on the frequency span.
10) Setting mode for channel power measurement Command : CPMODE* * * * * * * ( * * * * * * * = TOTAL, BAND) Example: CPMODETOTAL Query: CPMODE? Command TOTAL BAND Mode The sum of power on the screen is measured. The sum of power in the band specified is measured.
( * * * * * * *: = 0-500: screen position, center = 250) Example: ACPREF250 Query: ACPREF? 17) Setting reference bandwidth for adjacent channel power measurement Command : ACPREFBW* * * * * * * ( * * * * * * *: = 0-500: screen position, center = 250) Example: ACPREFBW50 Query: ACPREFBW? 18) Setting mode for occupied bandwidth measurement Command Command : OBWMODE* * ( * * : N%, DB) N% DB Example: OBWMODEN% Query: OBWMODE? 19) Setting N% RATIO for occupied bandwidth measurement Command : OBWRATIO* * * (
23) Setting probe for magnetic field strength measurement Command : MFPROBE* * * * ( * * * *: CP2S / USER) Example: MFPROBECP2S Query: MFPROBE? 24) Transfer user-compensation data for magnetic field strength measurement Command : MFUSER* * * * * (Refer to “25.8 Writing of Original Compensation Data” for the details.) Example: MFUSER300M:0.0DBI,350M:1.
30) 31) Setting display scale Command : SCALE* * ( * *: 2 / 5 / 10 ) Example: SCALE10 Query: SCALE? Command Display scale 2 5 10 2dB/div 5dB/div 10dB/div Setting sweep time Command : SWEEP* * * * ( * * * * : 10M / 30M / 0.1S / 0.3S / 1S / 3S / 10S / 30S / AUTO / ALL) Command Sweep time Command Sweep time 10M 30M 0.1S 0.3S 1S 10ms 30ms 0.1s 0.3s 1s 3S 10S 30S AUTO ALL 3s 10s 30s AUTO ALL AUTO Example: SWEEP0.
37) Setting marker mode Command : MKR* * * * * ( * * * * *: NORM / DELTA) Example: MKRDELTA Query: MKR? Command Marker mode NORM DELTA Normal marker Delta marker 38) Setting marker position by frequency The position of active marker is set by frequency. Command : NORMMKR* * * * * * ( * * * * * * *: Refer to “25.6 Input of Frequency”) Query: NORMMKR? 39) Setting marker position by number of points on horizontal axis The position of active marker is set by number of points on horizontal axis.
44) Setting unit of marker Command : CONV* * * ( * * *: DBM / W / DBV / V / DBUVM / VM) Example: CONVDBUVM Query: CONV? 45) Request print on printer Command : PRTSIW USB printer connected to USB A plug prints.
* When the remote control is ON, “REMOTE” is displayed in the operating information area on the screen. ( Refer to “4. Explanation of Screen” for the details.) 51) 52) 53) 54) Single sweep Command : CAPT * It sweeps only once and will be in a HOLD state. Setting offset level Command : OFFSET* * * * * (* * * * *: -50.0 to 50.0 [0.1 step, unit: dB] ) Example: OFFSET-25.6 Query: OFFSET? Command Offset level 50 Offset level is set to 0dB. Setting input impedance 75 Offset level is set to 5.7dB.
57) Setting tracking generator Command : TG* * * ( * * *: ON / OFF) Example: TGON Query: TG? 58) Setting normalizing function Command : NORM* * * ( * * *: ON / OFF) Example: NORMOFF Query: NORM? 59) Save/Load function Command : DEV*** ( * * *: MEN/USB) 60) Request On/Off of Offset Level Command: OFFSETOF? *Returned data: ON or OFF. 61) Request firmware version Command: VER 25.6 Input of Frequency The frequency is input as follows. ******* : 0.0k to 999.9k (0.1 step, unit: Hz) : 0.0M to 999.9M (0.
The spectrum data outputs as a numeric string separated by commas “,”. [**.**, **.**, ……, **.**] The unit is dBm, and it is available up to two decimal places. • Description String Explanation Example SPECT The data which follows the string "SPECT" is the spectrum data. SPECT * *, * *, · · · It is the spectrum data. This string consists of all data points separated by a comma “,” after each data value, and the string can have a total of ten data points per line.
Create a new text file, and open it with a text editor. Write the frequency and compensation data in the following format. * Format “frequency”: ”compensation data”, “frequency”: “compensation data”, · · · Example of M405 300M:0.0DBI,350M:1.0DBI,400M:1.4DBI,450M:1.4DBI,500M:0.0DBI * Write the unit with a capital letter as it is case sensitive. G (GHz) is also available. 2. Write the text file into the unit with 2650A PC software.
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 by adding +2.15 dB. Absolute gain [dBi] = Relative gain [dBd] + 2.15 dB As a reference, the conversion formula to electric field strength is indicated below: E = √(480π2 x Pa) / (Ga x λ2)) E: Electric field strength [V/m] Pa: Received electric power [W] Ga: Antenna gain [times] = 10(antenna gain [dBi] ÷ 10) λ : Wavelength [m] = (3 × 108) ÷ frequency [Hz] 26.
27. Basic Performance Test (2650A/2651/2652A/2658A) To keep the quality of the unit, regular performance testing is recommended. This section describes a method and specification of basic performance testing. If a problem is found in the results of basic performance testing, or formal testing is required,please contact B&K Precision. [Connection diagram] Receiver for calibration Spectrum analyzer calibration unit 2650A/2651 series 27.
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 the top, and calibrate the absolute value with the receiver for calibration (microwave power meter, etc.). Setting of 2650A/2652A/2651/2658A Reference level Specifications +10 dBm 0 dBm -10 dBm -15 dBm -20 dBm -30 dBm -40 dBm within ±1.4 dB±1dot within ±1.4 dB±1dot within ±1.4 dB±1dot within ±0.8 dB±1dot within ±1.4 dB±1dot within ±1.4 dB±1dot within ±1.
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, and measure the frequencies of f1 and f9. Calculate from f1 and f9 the display accuracy of the frequency span.
Center frequency Reference level Frequency span RBW VBW Sweep time Detection mode : : : : : : 100 MHz -15 dBm 10 MHz 3 MHz 1 MHz 1s SMPL Frequency 81 : 100 MHz
SERVICE INFORMATION Warranty Service: Please go the support and service section on our website www.bkprecision.com to obtain a RMA #. Return the product in the original packaging with proof of purchase to the address below. Clearly state on the RMA the performance problem and return any leads, probes, connectors and accessories that you are using with the device. Non-Warranty Service: Please go the support and service section on our website www.bkprecision.com to obtain a RMA #.
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