The 2650 are high-performance spectrum analyzers providing excellent performance and functions perfect for many different applications. It is a compact, lightweight and inexpensive unit that is ideal for testing W-CDMA, CDMA, GSM, PDC, PHS, Wireless LAN and Bluetooth systems. There are many accessories available for the 2650 and some of them may be necessary for your application, so please view the available accessories before ordering. Included accessories are BC 2650, LC 2650, BP 2650, accessory pouch, fuse and instruction manual. Features:
Channel power measurement
Adjacent channel power measurement
Occupied bandwidth measurement
Electric field strength measurement (with optional dipole antennas)
Magnetic field strength measurement (with optional PR 26M)
The dimensions are as small as 162 (W) × 70 (H) × 260 (D) mm, and the weight is only 1.7 kg including the battery. It is very convenient for outdoor use and while on business trips.
This bandwidth covers those of W-CDMA, CDMA, PDC, PHS, GSM, 2.4GHz band wireless LAN, Bluetooth.
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.
Model 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.
Measuring functions
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. ··· Optimum 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.
The center frequency is set at the spectrum of the maximum level in the 3.3GHz band, and in addition, optimum reference 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.
The resolution bandwidth, video bandwidth and sweep time are automatically set based on the frequency span. It is also possible to set auto range operation only one or two out of resolution bandwidth, video bandwidth and sweep time.
Connect a printer (PT 2650 optional) and press the PRINT key on Model 2650. The image on the screen is printed as it is.
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.
Available accessories for model 2650
Model: AD 26 SMA (J) to BNC Male connector for model 2650
50 ohm SMA(J) to BNC Male connector
Model: AK 2650 PC Interface Software for model 2650 The AK 2650 software and serial interface cable allows the 2650 to display screen resolutions on a PC that are four times greater then the 250 points displayed on the horizontal axis of the 2650’s LCD display. The 2650 samples its input at 1000 points per sweep and it can output these points through its RS 232 port to a PC (the maximum transfer rate is 38,400bps). The AK 2650 not only allows for clearer screen images but it also allows spectrum analyzer setup via a PC.
Model: AN 301 Dipole Antenna (0.8 to 1GHz) for model 2650 It is possible to measure the electric field strength by connecting one of the optional dipole antennas to the input connector. Dipole antennas that suit many uses are available. AN 301 is mainly for PDC 800MHz and GSM 900MHz bands, AN 302 is mainly for PDC 1500MHz bands, AN 303 is mainly for PHS, W-CDMA and GSM 1800/1900MHz bands, and AN 304 is mainly for 2.4GHz wireless LAN and Bluetooth bands. AN 305 is for 390MHz to 410MHz.
Model: AN 302 Dipole Antenna (1.25 to 1.65GHz) for model 2650 It is possible to measure the electric field strength by connecting one of the optional dipole antennas to the input connector. Dipole antennas that suit many uses are available. AN 301 is mainly for PDC 800MHz and GSM 900MHz bands, AN 302 is mainly for PDC 1500MHz bands, AN 303 is mainly for PHS, W-CDMA and GSM 1800/1900MHz bands, and AN 304 is mainly for 2.4GHz wireless LAN and Bluetooth bands. AN 305 is for 390MHz to 410MHz.
Model: AN 303 Dipole Antenna (1.7 to 2.2GHz) for model 2650 It is possible to measure the electric field strength by connecting one of the optional dipole antennas to the input connector. Dipole antennas that suit many uses are available. AN 301 is mainly for PDC 800MHz and GSM 900MHz bands, AN 302 is mainly for PDC 1500MHz bands, AN 303 is mainly for PHS, W-CDMA and GSM 1800/1900MHz bands, and AN 304 is mainly for 2.4GHz wireless LAN and Bluetooth bands. AN 305 is for 390MHz to 410MHz.
Model: AN 304 Dipole Antenna (2.25 to 2.65GHz) for model 2650 It is possible to measure the electric field strength by connecting one of the optional dipole antennas to the input connector. Dipole antennas that suit many uses are available. AN 301 is mainly for PDC 800MHz and GSM 900MHz bands, AN 302 is mainly for PDC 1500MHz bands, AN 303 is mainly for PHS, W-CDMA and GSM 1800/1900MHz bands, and AN 304 is mainly for 2.4GHz wireless LAN and Bluetooth bands. AN 305 is for 390MHz to 410MHz.
Model: AN 305 Dipole Antenna (390 to 410MHz) for model 2650 It is possible to measure the electric field strength by connecting one of the optional dipole antennas to the input connector. Dipole antennas that suit many uses are available. AN 301 is mainly for PDC 800MHz and GSM 900MHz bands, AN 302 is mainly for PDC 1500MHz bands, AN 303 is mainly for PHS, W-CDMA and GSM 1800/1900MHz bands, and AN 304 is mainly for 2.4GHz wireless LAN and Bluetooth bands. AN 305 is for 390MHz to 410MHz.
Model: BC 2650 120V, 60Hz AC Adapter for model 2650 AC adapter for model 2650. The BC 2650 accepts 100 to 240VAC, 50/60Hz and outputs through it pin jack a 5V/4A DC voltage to power the 2650.
Model: BP 2650 Ni-MH Battery Pack for model 2650 Replacement battery for model 2650. A fully charged battery has an approximate operation time of 100 minutes (with back light off).
Model: CC 301 1.6ft SMA (P) to SMA (P) Coaxial Cable for model 2650
50 ohm impedance coaxial cable
DC to 10GHz (VSWR <1.5)
Model: CC 302 3.28ft SMA (P) to SMA (P) Coaxial Cable for model 2650
50 ohm impedance coaxial cable
DC to 10GHz (VSWR <1.5)
Model: CC 303 4.92ft SMA (P) to SMA (P) Coaxial Cable for model 2650
50 ohm impedance coaxial cable
DC to 10GHz (VSWR <1.5)
Model: CC 304 6.5 inch SMA(P) to N(J) Coaxial Cable for model 2650
50 ohm impedance coaxial cable
DC to 4GHz (VSWR <1.5)
Model: CC 305 6.5 inch SMA(P) to N(P) Coaxial Cable for model 2650
50 ohm impedance coaxial cable
DC to 4GHz (VSWR <1.5)
Model: CC 306 6.5 inch SMA(P) to BNC(J) Coaxial Cable for model 2650
50 ohm impedance coaxial cable
DC to 2GHz (VSWR <1.5)
Model: CC 307 6.5 inch SMA(P) to BNC(P) Coaxial Cable for model 2650
50 ohm impedance coaxial cable
DC to 2GHz (VSWR <1.5)
Model: CT 2701 Coaxial Adapter Kit for model 2650 The CT 2701 coaxial connector adapter kit provided convenient solutions to most interconnection needs. The Universal Coaxial Adapter Kit, with its 6 universal adapters, allows assembly of hundreds of different coaxial adapters; in-series and between series. All pieces are machined brass with Teflon dielectrics and gold plated center contacts. Whether field service or bench, this kit provides an easy solution to coaxial connection requirements.
24 Coaxial Connectors; 6 Universal Adapters
Gold plated center contacts
Frequency Range: DC to 1GHz
VSWR <1.2:1 @ 1GHz (300MHz mini-UHF)
Insertion Loss: <1dB @ 1GHz
Convenient 6” x 5” Black Zipper Case
Model: LC 2650 Soft Carrying Case for model 2650 Leather textured carrying case with strap to carry and protect model 2650.
Model: PR 26M Magnetic Field Probe for model 2650 The model 2650 is capable of precisely measuring the magnetic field distribution on a LSI or a printed circuit board using magnetic field probe PR 26M. As the magnetic field detection portion of PR 26M is of a shielded loop structure that adopts glass ceramic multi-layer board technology of excellent high frequency characteristics, it is possible to take a measurement at high reproducibility by detecting magnetic field components only. The measuring frequency range is a broad as 10MHz to 3GHz, and the measured value is calibrated in the instrument.
Model: PT 2650 Printer for model 2650 With the PT 2650 you can print hard copies of screen images. Printing begins when the “PRINT” key is pressed. The printer can either be operated by an AC adaptor or four AA batteries. The operating time when powered by alkaline batteries is approximately 30 minutes (when used continuously), which makes it possible to produce about 80 hard copy screen images. The PT 2650 comes with one roll of paper. Order part number PX 2650 for an additional ten rolls of thermal paper.
Model: PX 2650 Roll Paper for PT 2650 (10 Rolls) PX 2650 is ten rolls of 80mm wide thermal paper for use with PT 2650.
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 frequency 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 upper and lower side power leakage are measured.
Furthermore, the method for measurement 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
Model 2650 is capable of precisely measuring the magnetic field distribution on an LSI or a printed circuit board using magnetic field probe PR 26M
As the magnetic field detection portion of PR 26M is of a shielded loop structure that adopts glass ceramic multi-layer board technology of excellent high frequency characteristics, it is possible 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 bypass 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 occupied 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.
Electric field strength measurement
It is possible to measure the electric field strength by connecting a dipole antenna (optional) to the input connector. A dipole antenna 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 wireless LAN and Bluetooth. AN304 is capable of measuring direct sequence spread spectrum, frequency hopping and Bluetooth system by 10 ms sweep time and MAX HOLD function.
The conventional method covering low frequency through high frequency with a single antenna results in low antenna gain because of using a range deviating 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 be also prepared if requested. As the electric field strength is calibrated for each antenna in Model 2650, it is possible to directly read the measured value.
Marker and peak search
Model 2650
Marker measurement
Two different modes are available for marker measurement. One is normal marker mode to measure and display the frequency (maximum effective number of digits : 7) and level (maximum effective number of digits : 3) of the marker point, and another is delta marker mode to measure and display the frequency difference and level difference between two markers (one of which is a reference marker).
Normal marker measurement
Delta marker measurement
Peak search
Two different modes are available for peak search. One is normal 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 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 peak search
Zone peak search
Auto tuning
The search for the signal of the maximum level in the 3.3GHz band is executed and the result is displayed in the specified frequency span when the AUTO TUNE key is pressed. The spectrum is tuned to the vicinity of the center of the screen, and the reference 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.
Auto range
Resolution bandwidth, video bandwidth and sweep time are set automatically based on the specified frequency span. Furthermore, 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.
Save/Load
It is possible to save 100 traces and 100 setups. The load is one trace and one setup. This function may be used when various data are acquired and they are evaluated later, or when it is wanted to make a comparison with formerly acquired data. The saved traces and setups can be transferred to a PC through RS-232C.
Hard copy of display
Hard copies of the image on the screen can be produced if a printer (model PT 21650, optional) is connected, using RS-232C (optional), to the RS-232C connector of this instrument. Printing begins when the PRINT key is pressed. The printer 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 produce about 80 hard copies of images on the screen.
High resolution display on the PC screen
Although the spectrum is displayed by 250 points on the horizontal axis on the spectrum analyzer screen, it is fetched by 1000 points per sweep in the instrument. When PC Software (AK 2650, optional) is used, all of these 1000 points are transferred 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.
Calculation functions
Model 2650
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 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. It is possible to observe burst signal and frequency drift.
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 retained 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.
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 components buried in the noise can be measured.
Over 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.
Measuring functions
Channel power measurement
