Data Sheet
Technical data subject to change
© B&K Precision Corp. 2012 www.bkprecision.com
Tel.: 714.921.9095
The 2650 and 2658 are high-performance handheld spectrum analyzers providing excellent performance and
functions perfect for many different applications. It is a compact, lightweight and cost-effective unit that is ideal for
testing W-CDMA, CDMA, GSM, PDC, PHS, Wireless LAN and Bluetooth systems.
Many different accessories are available for use with the 2650 and 2658 spectrum analyzers, which may be
necessary for your application. These accessories include a wide selection of dipole antennas, a magnetic field
probe, printer, PC software, and coaxial cable and adapter kits.
Features and Benefits
Channel power measurement
Adjacent channel power measurement
Occupied bandwidth measurement
Electric field strength measurement
(with optional dipole antennas)
Magnetic field strength measurement
(with optional magnetic field probe)
Min/Max hold
Average and overwrite mode
Marker measurement
Switchable 50 or 75 ohm input impedance
Peak search
Auto tuning
Auto range
Save/Load
Hard copy of display (with optional printer
accessory)
cUL approved
Handheld Spectrum Analyzers
Models 2650 and 2658
Model 2650 2658
Frequency Range 50 kHz - 3.3 GHz 50 kHz - 8.5 GHz
Specifications
Frequency Section
Frequency Range 50 kHz to 3.3 GHz (2650)
50 kHz to 8.5 GHz (2658)
Center Frequency
Setting resolution 100 kHz
Accuracy
within ±(30+20T) kHz±1 dot T: Sweep time(s)
(frequency span: 200 kHz to 10 MHz, RBW: 30 kHz, 23±5 °C)
within ±(100+700T)kHz±1dot T: Sweep time(s) (2650)
(frequency span: 20 MHz to 3.3 GHz (2650), RBW: 100 kHz, 23±5 °C
within ±(60+300T)kHz±1dot T: Sweep time(s) (2658)
(frequency span:20 MHz to 8.5 GHz (Model 2658), RBW: 100 kHz,
23±5 °C)
RBW frequency error within ±6% of RBW (RBW: 3 kHz, 30 kHz)
within ±30% of RBW (RBW: 100 kHz to 3 MHz)
Frequency Span
Setting range
0 Hz(zero span), 200 kHz to 2 GHz (2650) (1-2-5step) or
200 kHz to 5 GHz (2658) (1-2-5step),
and 3.3 GHz (full span/ 2650) or 8.5 GHz (full span/ 2658)
Accuracy
within ±3%±20T kHz±1dot
(frequency span: 200 kHz to 10 MHz, 23±5 °C)
within ±3%±200T kHz±1dot (frequency span:
20 MHz to 3.3 GHz (2650), 20 MHz to 8.5 GHz (2658)
23±5 °C) T: Sweep time(s)
Display resolution Frequency span/250
Frequency span/1000 (only measurement by RS-232C communication)
Display dot number
251dots, 1001dots (only measurement by RS-232C communication)
(The unit displays data in 251 horizontal
dots, but it internally captures the trace in 1001 dots)
Resolution bandwidth 3 dB bandwidth
Setting range 3 kHz to 3 MHz(1-3step) and AUTO
Accuracy within ±20%
Selectivity 1:12 (typical, 3 dB : 60 dB)
Video bandwidth 100Hz to 1MHz(1-3step), and AUTO
SSB phase noise -90 dBc/Hz (typical, 100 kHz offset, RBW: 3 kHz,
VBW: 100 Hz, Sweep time: 0.3s)
Spurious response less than -60 dBc
Harmonics less than -40 dBc (100 MHz to 3.3GHz/2650),
(100 MHz to 8.5 GHz/2658)
Amplitude Secti on
Reference level
Setting range +10 to -60 dBm (1 dB step)
Accuracy within ±0.8 dB±1 dot, (center frequency: 100 MHz,
RBW: 3 MHz, VBW: 1 MHz, ATT: 0 dB, 23±5 °C)
Unit dBm, dBV, dBmV, dBµV, dBµV/m, dBµA/m
(dBµV/m and dBµA/m using the measuring function)
Average noise level -110 dBm (typical, center frequency: 100 MHz,
RBW: 3 kHz, VBW: 100 Hz)
Frequency Characteristic
within ±2.0 dB±1 dot (100 kHz to 100 MHz)
within ±1.0 dB±1 dot (100 MHz to 3.3 GHz/2650),
(100 MHz to 8.5 GHz/2658)
Input impedance 50
Input VSWR less than 2.0
Input Attenuator
Operating range 0 to 25 dB (1 dB step), coupled with reference level
Switching error within ±0.6 dB
RBW switching error within ±0.6 dB
Display dot number 200 dots
Display Scale
Scale 10 dB/div, 2 dB/div
Accuracy
within ±0.8 dB/10 dB±1 dot,
within ±0.2 dB/2 dB±1 dot,
within ±1.6 dB/ 70 dB±1 dot
Input damage level +23 dBm(CW average power), 25 VDC
Sweep Section
Sweep time
Setting range
10 ms to 30 s (1-3 step, frequency span: 0 to 2 GHz) and AUTO,
30 ms to 30 s (1-3 step, frequency span: full span) and AUTO (2650)
30 ms to 30 s (1-3 step, frequency span: 5 GHz) and AUTO (2658)
Accuracy
within ±0.1%±1 dot (frequency span: 0 to 2 GHz) (2650),
within ±0.1%±1 dot (frequency span: 0 to 5 GHz) (2658),
within ±1.5%±1 dot (frequency span: full span) (2650),
within ±2.5%±1 dot (frequency span: full span) (2658)
Trigger mode AUTO(frequency span: zero span)
Detection mode Positive peak, Negative peak, Sample (When sweep time is 10 ms
or 30 ms, only Sample can be set)
Fu nctions
Marker
NORM: displays frequency (7 digits max) and level (4 digits max) at
marker point.
DELTA: displays differential frequency and level between 2 markers.
Peak search
NORM: searches a peak point within 10 div.
Available NEXT peak (10 max).
ZONE: searches a peak point within a zone designated by
center and width. Marker moves to a peak point each sweep.
Calculation NORM, MAX HOLD, MIN HOLD, AVERAGE, OVER WRITE
MAX/MIN HOLD: 2 to 1024 times, AVERAGE: 2 to 256
Measuring
Channel power, Adjacent channel leakage power, Occupied frequency
bandwidth, Electric field strength (needs antenna), Magnetic field strength
(needs optional magnetic field probe) measurement.
AUTO tuning
When pushing AUTO TUNE key, the maximum level spectrum within
3.3 GHz (2650), 8.5 GHz (2658) bandwidth is adjusted to center,
and reference level, RBW,
VBW and sweep time are adjusted to optimum values.
Save/Load
Save Saves 100 traces and 100 setups
Load Loads 1 trace and 1 setup
General
Input connector SMA(J)
Communication Interface RS-232C
Baud rate 2400 to 38400 bps
Hard copy Allows direct hard copy with an optional printer.
Display LCD
Backlight CFL backlight
Resolution 240 (V) x 320 (H) dots
Battery Ni-MH battery (optional)
External DC source DC jack,+4.75 to +5.25 VDC/4 A
Operating temperature 0 to 40 °C (Guaranteed at 23±10 °C, without soft carrying case)
Operating humidity 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) × 70 (H) × 260 (D) mm (exclude projections and stand)
Weight approx. 1.8 kg (include battery), approx. 1.5 kg (without battery)
Two Year Warranty
Supplied Accessories AC adapter (BC 2650), Soft carrying case (LC 2650), Accessory pouch,
Operating manual, Ni-MH Battery (BP 2650)
Optional Accessories:
Dipole antennas (AN 301,AN 302, AN 303,AN 304, AN 305,AN 306),
Magnetic field probe (PR 26M) with a dedicated double shielded coaxial
cable, PC software (AK 2650), Printer (PT 2650) with AC adapter. 4pcs
of AA batteries, and roll paper, Roll paper refill (PX 2650) for optional
printer PT 2650 (10 rolls),1 GHz coaxial adapter kit for RF test instru-
ments (CT 2701), Deluxe spectrum accessory kits (CC265 and CC560)
2 www.bkprecision.com
Handheld Spectrum Analyzers
Models 2650 and 2658
v020712
Specifications