Anritsu MS2687B User manual
MS2687B
Spectrum Analyzer
9 kHz to 30 GHz
For evaluation of Wireless LAN equipment and devices
2
3
High-performance microwave spectrum analyzer
covering 30 GHz
High-speed Internet services using Wireless LANs are spreading rapidly. High-speed hot-spot
wireless services are appearing in hotels, offices, restaurants. 5-GHz Wireless LAN equipment
and devices are being actively developed and there is urgent need for OFDM signal analysis.
The MS2687B Microwave Spectrum Analyzer covers a frequency range up to 30 GHz and can
measure up to 5th-order harmonics on 5-GHz Wireless LANs. Moreover, the MS2687B has a
maximum RBW of 20 MHz and is ideal for measuring the burst power of wideband signals used
by Wireless LANs. When the MX268730A Measurement Software is installed, the modulation
accuracy, of each sub-carrier of the OFDM signal can be measured at high speed and high
accuracy.
Features
•Optional measurement software (sold separately) for high-speed modulation analysis
(0.5 sec. with IEEE802.11a)
•Optional wide resolution bandwidth up to 20 MHz and narrow resolution bandwidth from 1 Hz
•Optional power meter that measures up to 32 GHz
•Data transmission speed approximately 10 times faster∗
(GPIB transmission speed: 120 kbytes/s) ∗Comparison with our conventional models
•Optional rubidium reference oscillator for warm-up time of just 7 minutes
4
For R&D and manufacturing of wireless LAN
equipment and devices
Frequency range: 9 kHz to 30 GHz
Reference oscillator start-up characteristics:
5 x 10–8or lower (standard)
1 x 10–9/7 min. or lower (option 05)
Span accuracy: ±1%
Resolution bandwidth:
300 Hz to 3 MHz, 5 MHz, 10 MHz, 20 MHz
1 Hz to 1 kHz (option 02, FFT)
10 Hz to 1 MHz (option 04)
Average noise level: ≤–146 dBm/Hz (1 MHz to 2.5 GHz)
Input attenuator: 0 to 70 dB (10 dB step)
Basic Specifications For installation and maintenance of radio
stations
Save/recall of set parameters: up to 12 into/from internal memory
Output of measurement results: BMP, CSV format or printer
(ESC/P compatible model)
PC card interface: PC compatible Memory card
(Memory card equipped as standard for 32 Mbytes or over)
Display: 6.5 inch (17 cm) color TFT-LCD
Dimensions, weight:
320 (W) x 177 (H) x 411 (D) (mm), 16 O
For maintenance of microwave entrance lines
Frequency range: 9 kHz to 30 GHz
(When using external mixer: to 110 GHz)
Measure: One-touch measurement of occupied
bandwidth, channel power, and adjacent
channel leakage power
Power meter function: 100 kHz to 32 GHz
(Power sensor optionally available)
A backpack and soft carrying case convenient for field use
is also available.
5
For development and production line of
various radio frequency parts
Reference oscillator stability:
±2 x 10–8/day (standard)
±5 x 10–9/day (option 01)
Sweep time: 10 ms to 1000 s (frequency span)
1 µs to 1000 s (time span)
Sweep refresh rate: 20 trace/s
I/O interface:
GPIB, RS-232C, and Centronics equipped as standard
Ethernet (option 09) allows network control by 10BASE-T.
GPIB transfer rate: 120 kbytes/s
Options
Option 01: Precision frequency reference
(aging rate: 5 x 10–10/day)
Option 02: Narrow resolution bandwidth (FFT)
Option 04: Digital resolution bandwidth (RMS detection)
Option 05: Rubidium reference oscillator
Option 09: Ethernet interface
Option 18: I/Q unbalanced input
Option 21: Power meter function
Option 23: Range expansion power meter function
Option 34: 4 GHz LO output
Option 41: Power meter function retrofit
Option 43: Range expansion power meter function retrofit
Option 44: Range expansion power meter function upgrade
Option 46: Auto power recovery
Option 47: Rack mount (IEC) without handles
Option 48: Rack mount (JIS) without handles
Warranty
Option 90: Extended three year warranty service
Option 91: Extended five year warranty service
6
Easy-to-Use Panel Design
1IF output (BNC type)
2Reference input/output (BNC type)
3Power
4AC input
5Ethernet interface (10BASE-T, optional)
6RS-232C interface
7VGA output
8GPIB interface
9Parallel interface (D-sub25)
10
Trigger input (BNC type)
11
Video signal output (BNC type)
1
6.5 inch (17 cm)
color TFT-LCD
Memory card slot
Power
Preset
Copy
23
4
579
68
10
11
7
1st local output
Ten key
Rotary knob
Various function
Main function
Mode selection
RF input (K-J type)
I/Q input (BNC type)
Sensor input
8
Excellent Basic Performance
High C/N ratio to securely capture
adjacent signals
The MS2687B has excellent noise sideband
characteristics of –108 dBc/Hz or lower (1 GHz, 10 kHz
offset), which is ideal for analyzing weak signals adjacent
to strong signals or a narrow bandwidth carrier.
Broad dynamic range that accurately
captures weak signals
With the development of digital radio technology, analyzed
signals are becoming weaker and broader than ever. With
the MS2687B, a dynamic range display of up to 156 dB
(typical value) has been achieved, thus allowing accurate
analysis of even weak signals.
The resolution bandwidth of up to 20 MHz permits the
analysis of broadband signals and can handle the broader
bandwidths of the future.
Extremely low distortion rate suitable
for power amplification or harmonic
measurement
The MS2687B has extremely low harmonic distortion
levels, including second harmonic distortion of –90 dBc
and two-signal third-order distortion of –85 dBc, making it
suitable for evaluating the non-linearity of high-power
amplifiers and for measuring harmonics.
Instantaneous evaluation of various
radio devices
Standard measure functions
The MS2687B has a wealth of measuring functions to
perform various high-speed evaluations of radio devices
such as power measurement, frequency measurement,
adjacent channel leakage power measurement, and mask
measurement.
Optional measurement software is also available for
instantaneously analyzing various digital communication
systems by just installing the software.
Example of occupied bandwidth
Example of two-signal third-order distortion waveform
Example of C/N characteristics waveform
9
Easy measurement data control
allowed by various interfaces
The results of measurement with the MS2687B can be
saved at the touch of a button (in BMP or CSV format;
data can also be output to a printer). The large-capacity
memory card instead of a floppy disk which is susceptible
to mechanical failure allows accurate and high-speed
storage of important data. Various interfaces such as RS-
232C, Centronics, GPIB, and Ethernet (optional) permit
easy connection to a PC for data collection.
Convenient and Easy-to-Use Functions
Example of frequency counter
1 Hz resolution
Built-in frequency counter
The built-in frequency counter is convenient for measuring
the frequency of a signals arbitrarily selected from multiple
signals. High resolution of 1 Hz even at full span is
assured.
Multiple waveform display and
multimarkers
The MS2687B is equipped with multiple waveform display
function that allows superimposition of two waveforms or
simultaneous display of analysis of frequency domain and
time domain.
It also has substantial marker functions that allow up to
10-point multimarkers to be displayed for comparison of
waveforms and measurement of harmonics.
Bright and easy-to-see 6.5 inch
(17 cm) color TFT display
The MS2687B has a 6.5 inch (17 cm) color TFT-LCD.
Intensity and color can be adjusted freely according to the
operating conditions.
Example of harmonics measurement Example of capture soft
Example of coloring change
10
For installation and maintenance of various radio stations
Ideal for installation and maintenance
of radio stations
Short warm-up time of just 7 minutes
The MS2687B is a portable spectrum analyzer ideal for
installing and maintaining various radio stations. A frequency
range of 9 kHz to 30 GHz has been achieved, and by using
an external mixer, this can be extended up to 110 GHz.
This range covers the frequencies of various mobile
communication systems and applications such as
microwave entrance lines. The warm-up time of the
optional rubidium reference oscillator (option 05) is just 7
minutes, making it ideal if you have to move from one site
to another.
Various accessories ideal for
field use
A backpack and soft carrying case are available for
installation and maintenance of radio stations in the field.
Various accessories such as a rubber protective pad for
the back of the analyzer are useful precautions for field
use.
Optional power meter function for
highly accurate power measurement
The MS2687B has an optional power meter function that
permits measurement of up to 32 GHz. Just by mounting
a power sensor to the full-face connector, highly accurate
power measurement can be performed.
Use of the MS2687B eliminates the need to carry a power
meter to the site, and enables more efficient measurement
at the site.
Example of power measurement
For installation and maintenance of various radio stations
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