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

–8

or 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

1 IF output (BNC type)
2 Reference input/output (BNC type)
3 Power
4 AC input
5 Ethernet interface (10BASE-T, optional)
6 RS-232C interface
7 VGA output
8 GPIB interface
9 Parallel 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

2

3

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 RS­232C, 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 b y using
an external mixer , this can be extended up to 110 GHz.
This range covers the frequencies of v arious 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

11

For development and production lines of

various high-frequency parts

Example of wide bandwidth signal measurement

Example of narrow resolution bandwidth measurement

Suitable for analysis of broadband signals
Wide resolution bandwidth of up to 20 MHz

The MS2687B comes with a high-performance DSP as
standard. Various modulation analysis functions can be
added simply by installing measurement software. In
signal analysis mode, analysis by I/Q input (option 18
required) can be performed.
The resolution bandwidth is up to 20 MHz, which allows
the analysis of Wireless LAN signal.

High-speed measurement for construction
of automatic manufacturing lines

The MS2687B has a high sweep rate of more than 20
times/s. A slight change of the signal can thus be
accurately captured and measured at high speed. The
GPIB transfer speed of the measured data is as fast as
120 kbytes/s, making it approximately 10 times faster than
our conventional model. Use of the optional Ethernet
interface allows connection to a LAN for centralized
management and high-speed measurement, and thus
efficient construction of production lines.

High-speed sweep by FFT
Narrow resolution bandwidth (optional)

Optional narrow resolution bandwidth with FFT (fast
Fourier transform) is available (option 02, 1 Hz to 1 kHz).
This option permits state-of-the-art high-speed
measurement in a narrow band that used to be impossible
with the conventional sweep method.

For development and production lines of

various high-frequency parts

12

Versatile Options for Improving Performance and Functions

[option 21, 41]

Power meter function

The main unit can be used as a power meter with the
upper limit of 32 GHz by mounting an external power
sensor (see ordering information for details) to the
connector on the front panel.
Power measurement range expands from –20 to +20
dBm.

[option 23, 43, 44]

Range expansion power meter
function

The main unit can be used as a power meter with the
upper limit of 32 GHz by mounting an external power
sensor (see ordering information for details) to the
connector on the front panel.
Power measurement range expands from –30 to +20
dBm.

[option 34]

4 GHz LO output

Outputs internal 2nd local signal through rear
connector.

[option 46]

Auto power recovery

Disables the power switch on the front panel. Power is
automatically reset after the line is restored.

[option 47]

Rack mount (IEC) without handles

Mounts an IEC standard rack mount. When mounted,
the tilt handle (standard) is eliminated.

[option 48]

Rack mount (JIS) without handles

Mounts a JIS standard rack mount. When mounted,
the tilt handle (standard) is eliminated.

[option 01]

Precision frequency reference

Highly-stable reference crystal oscillator option with
frequency of 10 MHz, and aging rate of 5 x 10

–10

/day.

[option 02]

Narrow resolution bandwidth

Realizes narrow RBW of 1 Hz to 1 kHz with FFT
adopted.

[option 04]

Digital resolution bandwidth

Adds RMS director and expands resolution bandwidth
(10 Hz to 1 MHz).

[option 05]

Rubidium reference oscillator

Offers excellent start-up characteristics of 10 MHz
oscillation frequency and start-up characteristics of 1 x
10

–9

/7 min.

[option 09]

Ethernet interface

Allows external control via 10BASE-T.

[option 18]

I/Q unbalanced input

Mounts 2 connectors for I/Q sync inputs and operating
inputs (BNC type) to the front panel. Measurement
software corresponding to I/Q input is required for
actual measurement.

13

Application Software

The MS2687B Spectrum Analyzer has been designed to provide the optimum performance required for evaluation of the
advanced radio communication devices. They have a wide dynamic range, wide resolution bandwidth (20 MHz), and high­speed sweep (refresh rate: 20 times/s).
When measurement software is stalled in the mainframe, the analysis function of spectrum analyzer to each communication
system will be extended. In this case, more advanced analysis can be performed.

Selection guide

Communication system Measurement software

W-CDMA

MX268701B W-CDMA Measurement software
MX268751A W-CDMA Release5 uplink Measurement Software

GSM
EDGE

MX268702A GSM Measurement software

cdmaOne
cdma2000 1x

MX268703A cdma Measurement software

cdma2000 1xEV-DO MX268704A 1xEV-DO Measurement software
π/4DQPSK

PDC
PHS
NADC (IS-136)

MX268705A π/4DQPSK Measurement software

STD-39/T79
STD-T61

WLAN

IEEE802.11a/b/g
HiSWANa

MX268730A Wireless LAN Measurement software

HiperLAN2

WLAN

IEEE802.11a/b/g
HiSWANa

MX268732A Wireless LAN Measurement software Limited Version

HiperLAN2

TD-SCDMA MX268760A TD-SCDMA Measurement Software

∗: For details, please see the data sheet of MX268X series measurement software.

Memory card

•

Measurement software is installed in main frame using a
memory card.

•

The signal of various kinds is analyzable with the func­tion of the measurement software installed in main
frame. The notebook PC for analyzing a signal is
unnecessary.

•

Measurement software is installable in one set of a
spectrum analyzer to three.

14

MS2687B Specifications

Specified values are obtained after warming up the equipment for 30 minutes at a constant ambient temperature and then
performing calibration. The typical values are given for reference, and are not guaranteed.

Frequency range 9 kHz to 30 GHz

Band Frequency range Mixer harmonics order [N]

0 9 kHz to 3.2 GHz 1
1– 3.15 to 6.3 GHz 1

Frequency band

1+ 6.2 to 7.9 GHz 1
2+ 7.8 to 15.3 GHz 2
4+ 15.2 to 30 GHz 4

Pre-selector range Pre-selector range: 3.15 to 30 GHz (band 1–, 1+, 2+, 4+)

± (Display frequency x reference frequency accuracy + span x span accuracy + resolution bandwidth x
Display frequency 0.15 + 10 Hz x N Hz)
accuracy Normal marker: same as frequency display accuracy, Delta marker: same as span accuracy, N : Mixer

harmonics order
Frequency counter resolution

1 Hz, 10 Hz, 100 Hz, 1 kHz (counts the received frequency at the peak point inside the zone)
Frequency counter ± (Display frequency x reference frequency accuracy +2 x N Hz + 1 LSD)
accuracy (at S/N 20 dB or more and RBW 3 MHz or less), N : Mixer harmonics order

Frequency span

Setting range: 0 Hz, and 5 kHz to 30 GHz, accuracy: ±1.0% (band 0, 1), ±2.5% (band 2, 4)

∗ At single band sweep, data point 1001

Setting range: 300 Hz to 3 MHz (1, 3 sequence), 5 MHz, 10 MHz, 20 MHz (0 band)
Resolution bandwidth ∗ Manually settable, or automatically settable according to frequency span
(RBW) [3 dB bandwidth] Accuracy: ±20% (300 Hz to 10 MHz), ±40% (20 MHz)

Selectivity (60 dB: 3 dB): ≤15 : 1
Video bandwidth (VBW) 1 Hz to 3 MHz (1, 3 sequence), Off ∗ Manually settable, or automatically settable according to RBW

Signal purity

Noise singleband: ≤–108 dBc/Hz (1 GHz, 10 kHz offset), ≤–120 dBc/Hz (1 GHz, 100 kHz offset)

Spurious resulting from local cause: ≤–65 dBc (at harmonic mixing order 1)

Frequency: 10 MHz
Reference oscillator

Start-up characteristics:

≤5 x 10

–8

(after 10 minutes warm-up, with frequency after 24 hours warm-up referenced)
Aging rate: ≤2 x 10–8/day, ≤1 x 10–7/year (with frequency after 24 hours of warm-up referenced)
Temperature characteristics: ±5 x 10–8(0 to 50˚C, with frequency at 25˚C referenced)
Measurement range: Average noise level to +30 dBm
Maximum input level

Continuous average power: +30 dBm (RF ATT: ≥10 dB)
Peak pulse input: +47 dBm (pulse width ≤1 µs, duty ratio ≤1%, RF ATT: ≥30 dB)
DC voltage: 0 Vdc

Average noise level display

RBW: 300 Hz, VBW: 1 Hz, RF ATT 0 dB, in SAMPLE detection mode
≤–124 dBm + f [GHz] dB (1 MHz to 2.5 GHz, band 0)

Level measurement

≤–120 dBm + f [GHz] dB (2.5 to 3.2 GHz, band 0)
≤–115 dBm (3.15 to 7.9 GHz, band 1)
≤–113 dBm (7.8 to 15.3 GHz, band 2)
≤–103 dBm (15.2 to 30.0 GHz, band 4)

Residual response: RF ATT 0 dB, input terminated at 50 Ω

≤–100 dBm (1 MHz to 3.2 GHz, band 0),
≤–90 dBm (3.15 to 7.8 GHz, band 1)

Setting range

Log scale: –100 to +40 dBm or equivalent level, Linear scale: 2.24 µV to 22.4 V

Unit

Log scale: dBm, dBµV, dBmV, dBµV (emf), W, V, dBµV/m
Linear scale: V

Reference level accuracy:

±0.5 dB (–49.9 to 0 dBm), ±0.75 dB (+0.1 to +30 dBm, –69.9 to –50 dBm), ±1.5 dB (–80 to –70 dBm)

Reference level ∗ After calibration, at 50 MHz, span: 1 MHz (when RF ATT, RBW, VBW, and sweep time set to AUTO)

RBW switching uncertainty:

±0.3 dB (300 Hz to 5 MHz), ±0.5 dB (10, 20 MHz)

∗ After calibration, with RBW 3 kHz referenced

Input attenuator (RF ATT):

Setting range: 0 to 70 dB (10 dB step), manually settable, or automatically settable according to reference level
Switching uncertainty: ±0.3 dB (10 to 50 dB), ±0.5 dB (50 to 70 dB)

∗

With 50 MHz, RF ATT 10 dB referenced

FrequencyAmplitude

15

Relative flatness: at RF ATT 10 dB with the center point of frequency response in the band referenced

±1.0 dB (9 kHz to 3.2 GHz, band 0), ±1.5 dB (3.15 to 7.9 GHz, band 1)
±3.0 dB (7.8 to 15.3 GHz, band 2), ±4.0 dB (15.2 to 30 GHz, band 4)

Frequency response ∗ After pre-selector tuning for band 1, 2, and 4

Absolute flatness: at RF ATT 10 dB with 50 MHz referenced

±5.0 dB (9 kHz to 30 GHz),

∗ After pre-selector tuning for band 1, 2, and 4

Scale: 10 div (single scale)

Log scale: 10, 5, 2, 1 dB/div, Linear scale: 10, 5, 2, 1%/div

Linearity (after calibration)

Waveform display

Log scale: ±0.4 dB (0 to –20 dB, RBW ≤1 kHz), ±1.0 dB (0 to –70 dB, ≤1 kHz),

±1.2 dB (0 to –90 dB, ≤1 kHz)

Linear scale: 4% of reference level

Marker level resolution

Log scale: 0.01 dB, linear scale: 0.02%

2nd harmonic distortion:

≤–60 dBc (input frequency 10 to 200 MHz, Mixer input: –30 dBm)
≤–70 dBc (0.2 to 1.6 GHz, band 0, Mixer input: –30 dBm)
≤–90 dBc or lower than average noise level (1.6 to 15 GHz, band 1, 2, and 4, Mixer input: –10 dBm)

Two-signal third-order intermodulation distortion (Frequency difference of two signals: ≥50 kHz, Mixer
input: –30 dBm)

≤–70 dBc (10 to 100 MHz),

Spurious response

≤–85 dBc (0.1 to 3.2 GHz, band 0)
≤–80 dBc (3.15 to 7.9 GHz, band 1)
≤–75 dBc or lower than average noise level (7.8 to 15.3 GHz, band 2)
≤–75 dBc or lower than average noise level (15.2 to 30 GHz, band 4, Typical)

Image response: ≤–65 dBc (≤18 GHz), ≤–60 dBc (≤22 GHz), ≤–55 dBc (≤30 GHz)
Multiple response/spurious outside the band:

≤–60 dBc (≤22 GHz), ≤–55 dBc (≤30 GHz)
1 dB gain compression ≥0 dBm (≥100 MHz), ≥+3 dBm (≥500 MHz, band 0), ≥–5 dBm (≥3150 MHz, band 1, 2, and 4)
Sweep mode Continuous, single

Setting range: 10 ms to 1000 s ∗ Manual setting and span automatically settable according to RBW and VBW

Sweep time Set resolution: 5 ms (5 ms to 1 s), Top three digits (≥1 s)

Accuracy: ±3%
Trigger switch Free run, triggered
Trigger source Wide IF video, external (TTL), external (±10 V), line

Off, random sweep mode

Setting range
Gate sweep mode Gate delay range: 0 to 65.5 ms (Resolution: 1 µs)

Gate length range: 2 µs to 65.5 ms (Resolution: 1 µs)

Gate end: Internal/external
Zone sweep Sweeps the indicated range in the zone only.
Tracking sweep Sweeps following the peak point inside the zone marker (zone sweep also available).
Sweep mode Continuous, single

Sweep time

Setting range/resolution: 1 to 50 µs (1, 2, 5 sequence), 100 µs to 4.9 ms (100 µs resolution)

5.0 ms to 1 s (5 ms resolution), 1 to 1000 s (setting of top three digits)

Accuracy: ±1%
Trigger switch Free run, triggered
Trigger source Wide IF video, video, external (TTL), external (±10 V), line

Pre-trigger (displays waveform before trigger occurrence point)

Setting range: –time span to 0 s

Trigger delay

Resolution: time span/500 or 100 ns, whichever is larger

Post-trigger

Setting range: 0 µs to 65.5 ms

Resolution: 100 ns (sweep time: ≤4.9 ms), 1 µs (sweep time: ≥5 ms)
Number of data points Selectable between 501 and 1001
Detection mode NORMAL, POSITIVE PEAK, NEGATIVE PEAK, SAMPLE, AVERAGE

Display functions

TRACE A, TRACE B, TRACE A/BG, TRACE A/TIME
Trace calculation: A →B, B →A, A <=> B, A + B →A, A – B →A, A – B + DL →A

Storage functions NORMAL, VIEW, MAX HOLD, MIN HOLD, AVERAGE, CUMULATIVE, OVER WRITE

AmplitudeFrequency sweepTime sweepFunctions

16

Single search: AUTO TUNE, PEAK →CF, PEAK →REF, SCROLL
Zone marker: NORMAL, DELTA

Marker

Marker functions: MARKER →CF, MARKER →REF, MARKER →CF STEP SIZE,

∆ MARKER →SPAN, ZONE →SPAN
Peak search: PEAK, NEXT PEAK, MIN DIP, NEXT DIP
Multi marker: 10 max. (highest 10, harmonics, manually set)
Noise power: dBm/Hz, dBm/CH, dBµV/√–Hz
C/N: dBc/Hz, dBc/CH
Occupied bandwidth: power N% method, X-dB down method
Adjacent channel leakage power

Measure REF: total power/reference level/in-band level method

Display: channel designate display: (3 channels x 2), graphic display
Average power within burst signal: average power in the designated range of time domain waveform
Template comparison (at time sweep): upper limit x 2, lower limit x 2
MASK (at frequency sweep): upper limit x 2, lower limit x 2

Correction Frequency response can be corrected arbitrarily up to 150 points
Display Color TFT-LCD, VGA 17 cm (6.5 type)
Color Number of colors: 4096, RGB, each 16-scale settable
Intensity Settable in 5 steps (display off included)
Contents Scale, waveform data, setting condition, menu, title
Save/recall Saves and recalls setting conditions and waveform data to internal memory (max. 12) or memory card

Hard copy

Displayed data can be hard-copied with the printer via parallel interface
(PCL level 3 or lower, or ESC/P-J83, J84 compatible models only)

GPIB

Meets IEEE488.2. Controllable with external controller (except for power switch)
Interface function: SH1, AH1, T6, L4, SR1, RL1, PP0, DC1, DT1, C0, E2

Parallel interface

Centronics-compatible, outputs print data to printer, D-sub 25 pin connector (jack)
Data line exclusive for output: 8, Control line: 4 (BUSY,

_____
DTSB,

_____
ERRO_R, PE)

PC card interface

Saves and recalls setting condition and waveform data, Memory card accessible (3.3/5 V),
Connector: Type Ι or Type ΙΙ of PC card

RS-232C

Controllable with external controller (except for power switch)
Baud rate: 1200, 2400, 4800, 9600, 19.2 k, 38.4 k, 56 k, 115 kbps
Input connector: K-J, 50 Ω nominal value,

Impedance: VSWR ≤2.3 Typical (RF ATT ≥10 dB)
Video output: outputs analog RGB, D-sub 15-pin connector (jack)
IF output: BNC connector, 50 Ω nominal value, 66/10.69 MHz,

Level: –10 dBm Typical, (frequency 50 MHz, display scale upper edge, 50 Ω terminated)
Broadband IF output: BNC connector, 50 Ω nominal value, 60.69/66 MHz

Gain: 0 dB Typical (50 MHz, RF ATT: 0 dB, for RF input level)
Video output (Y): BNC connector

Level: 0 to 0.5 V ± 0.1 V Typical (log scale), 0 to 0.4 V ±0.1 V Typical (linear scale),

(50 MHz, from upper edge to lower edge at 10 dB/div or 10%/div, 75 Ω terminated)

Input/output connector Buffered Output: BNC connector,

Level: 2 to 5 V (p-p) (200 Ω terminated)
Sweep Output (X): BNC connector,

Level: 0 to 10 V ± 0.1 V (≥100 kΩ termination, from the left edge to the right edge of the display scale,

single band sweep)

Sweep Status Output (Z): BNC connector,

Level: TTL (low level at sweep)
Probe source: 4-pole connector, +12 V, –12 V, ±10% each, 110 mA max. each.
Trig/Gate input: BNC connector, level: ±10 V (0.1 V resolution), or TTL level
External reference input: BNC connector,

Frequency: 10 MHz ± 10 Hz, 13 MHz ± 13 Hz, level: ≥0 dBm

External mixer Frequency range: 18 to 110 GHz, For the details, refer to the last page.
Dimensions, weight 320 (W) x 177 (H) x 411 (D) mm (handle, leg, front cover, fan cover excluded), ≤16 O (nominal value)

Power

100 to 120/200 to 240 Vac (–15%/+10%, 250 V max., wide range input)

47.5 to 63 Hz, ≤400 VA

Ambient temperature and 0˚ to +50˚C, RH ≤85%
humidity (no condensation allowed)
Storage temperature range –20˚ to +60˚C

EMC

EN61326: 1997/A2: 2001 (Class A)
EN61000-3-2: 2000 (Class A)
EN61326: 1997/A2: 2001 (Annex A)

LVD EN61010-1: 2001 (Pollution Degree 2)

MS2687B Specifications

FunctionsOthers

17

Options

Option 01: Precision frequency reference oscillator

Frequency 10 MHz
Start-up characteristics ≤5 x 10–8(≤7 min. 25˚C, Typical)
Aging rate ≤±5 x 10

–10

/day (With the frequency at 24 hours after the power is turned on referenced)

Temperature characteristics ≤±5 x 10

–10

(With the frequency at 0 to 50˚C and 25˚C referenced)

Option 05: Rubidium reference oscillator

Frequency 10 MHz
Start-up characteristics ±1 x 10–9/7 min. (with frequency one hour after the power is turned on referenced)
Aging rate ±1 x 10

–10

/month (with frequency one hour after the power is turned on referenced)
Temperature characteristics ±1 x 10–9(with frequency at 0 to 45˚C and 25˚C referenced)
Accessories J1066 coaxial code 0.15 m (BNC211-LP4)

Option 09: Ethernet interface

Function Control with external controller (except for power switch)
Connector 10BASE-T

Option 18: I/Q unbalanced input

Connector BNC
Impedance Selectable between 1 MΩ (parallel capacity <100 pF) and 50 Ω

Input level range

Differential voltage range: 0.1 to 1 Vp-p (at input terminal)
Changeable between DC connection and AC connection

Option 02: Narrow resolution bandwidths (FFT)

Setting range: 1 Hz to 1 kHz (1, 3 sequence)

Resolution bandwidth

Bandwidth accuracy: ±10% (RBW = 30, 300 Hz)

±10% Typical (RBW = 1, 3, 10, 100, 1 kHz)
RBW selectivity (60 dB: 3 dB): ≤5:1
RBW switching uncertainty: ±0.5 dB

Span setting Minimum setting span: 100 Hz

When RBW is 1 Hz, RF ATT is 0 dB

≤–146.5 dBm + 1.5f [GHz] dB Typical (1 MHz to 2.5 GHz, band 0)
≤–142.5 dBm + 1.5f [GHz] dB Typical (2.5 to 3.2 GHz, band 0)

Average noise level display

≤–137.5 dBm Typical (3.15 to 7.9 GHz, band 1)
≤–135.5 dBm Typical (7.8 to 15.3 GHz, band 2)
≤–125.5 dBm Typical (15.2 to 30 GHz, band 4)

Option 04: Digital resolution bandwidth

Setting range: 10 Hz to 1 MHz (1, 3 sequence)
Bandwidth accuracy: ±10% (RBW ≥100 Hz)

±10% Typical (RBW ≤30 Hz)

Resolution bandwidth Bandwidth selectivity (60 dB: 3 dB):

≤5:1 (RBW ≥100 Hz)
≤5:1 Typical (RBW ≤30 Hz)

RBW switching uncertainty: ±0.5 dB

Detection mode

NORMAL, POSITIVE PEAK, NEGATIVE PEAK, SAMPLE, RMS
RMS: displays root-mean-square value of average power between sample points
When RBW is 10 Hz, RF ATT is 0 dB

≤–136.5 dBm + f [GHz] dB Typical (1 MHz to 2.5 GHz, band 0)
≤–132.5 dBm + f [GHz] dB Typical (2.5 to 3.2 GHz, band 0)

Average noise level

≤–127.5 dBm Typical (3.15 to 7.9 GHz, band 1)
≤–125.5 dBm Typical (7.8 to 15.3 GHz, band 2)
≤–115.5 dBm Typical (15.2 to 30 GHz, band 4)

18

Options

Option 21, 41: Power meter function

Frequency range 100 kHz to 32 GHz, Depends on the power sensor used.
Applicable power sensor

MA4601A (100 kHz to 5.5 GHz), MA4701A (10 MHz to 18 GHz),
MA4703A (50 MHz to 26.5 GHz), MA4705A (50 MHz to 32 GHz)

Power measurement range –20 to +20 dBm
Display

Selectable from W, dBm, and dB (RELATIVE), Digital 4 digit display, 20% over range,
Power range: 4 range/10 dB step (Measurement level range is listed on the power sensor specifications.)

Range switching Auto, manual (settable to arbitrary range irrespective of range hold or input level)
Accuracy

±0.7% (W mode), ±0.03 dB (dBm mode, dB (RELATIVE) mode)

∗ Pressing ZERO ADJ key allows automatic adjustment to zero point.

Zero setting ±0.5% of full scale Typical value (100 µW range of maximum sensitivity)
Zero move between ranges ±0.2% (after zero setting at 100µW range of maximum sensitivity)
Calibration oscillator frequency

50 MHz
Calibration oscillator level 1 mW ± 1.2% (for one year)
Averaging An average count can be set from 2 to 10.

Option 34: 4 GHz LO output

Frequency

Frequency: 4 GHz

Frequency accuracy: ± (4 GHz x reference frequency accuracy) ±1 Hz
Output level –10 dBm Typical
Spurious ≤–40 dBc Typical

Option 46: Auto power recovery

Disables the power switch on the front panel and automatically restores power after power failure.
Function

ON/OFF operation can be performed using the standby switch on the rear panel.

∗ Power switch on the front panel of this unit does not have a latching function. Therefore, if power is

interrupted in the ON status, the standby status is kept even after power is restored.

Option 47: Rack mount (IEC)

Function

Mounts the rack mount for IEC standard-compatible rack. When mounted, the tilt handle (standard) is eliminated.

Option 48: Rack mount (JIS)

Function Mounts the rack mount for JIS standard-compatible rack. When mounted, the tilt handle (standard) is eliminated.

Option 23, 43, 44: Range expansion power meter function

Frequency range 100 kHz to 32 GHz ( Depends on the power sensor used )
Applicable power sensor

MA4601A (100 kHz to 5.5 GHz), MA4701A (10 MHz to 18 GHz),

MA4703A (50 MHz to 26.5 GHz), MA4705A (50 MHz to 32 GHz)
Power measurement range –30 to +20 dBm
Display Selectable from W, dBm, and dB (RELATIVE), Digital 4 digit display, 20% over range

Power range

5 range / 10 dB step (Measurement level range is listed on the power sensor specifications.)

full scale value: –20, –10, 0, +10, +20 (10 µW to 100 mW)
Range switching Auto, manual (settable to arbitrary range irrespective of range hold or input level)

Accuracy

±0.6% (W mode), ±0.026 dB (dBm mode, dB (RELATIVE) mode)

When including the zero drift in range1 (10 µW range) is as follows.
±1.2% (W mode), ±0.052 dB (dBm mode, dB (RELATIVE) mode)

Pressing ZERO ADJ key allows automatic adjustment to zero point.
Zero setting ±0.6% of full scale Typical value (10 µW range of maximum sensitivity)
Zero move between ranges ±0.2% of full scale (after zero setting at 10 µW range of maximum sensitivity)
Calibration oscillator frequency

50 MHz
Calibration oscillator level 1 mW ± 1.2% (for one year)
Averaging An average count can be set from 2 to 10.

19

Ordering Information

Please specify model/order number, name and quantity when ordering.

Model/order No. Name

– Application parts –

J0576D Coaxial cord (N-P, 5D-2W, N-P), 2 m
J0561 Coaxial cord (N-P, 5D-2W, N-P), 2 m
J0104A Coaxial cord (BNC-P, RG-55/U, BNC-P), 1 m
J0127C

Coaxial cord (BNC-P, RG-58A/U, BNC-P), 0.5 m
J0127A Coaxial cord (BNC-P, RG-58A/U, BNC-P), 1 m
DGM010-02000EE

Coaxial cord (general use, N-P · N-P, DC to 18

GHz), 2 m

DGM024-02000EE

Coaxial cord (low-loss type, N-P · N-P, DC to

18 GHz), 2 m
J0911 Coaxial cord (K-P · K-P, DC to 40 GHz), 1 m
J0912 Coaxial cord (K-P · K-P, DC to 40 GHz), 0.5 m
J0007 GPIB cable, 1 m
J0008 GPIB cable, 2 m
J1047 Ethernet cross cable, 5 m
MA1612A Four-port Junction Pad(5 to 3000 MHz)
MA1621A 50 Ω→ 75 Ω Impedance Transformer (75 Ω,

9 kHz to 3 GHz, ±100 V, NC-type)
MP614B 50 ↔70 Ω Impedance Converter (50 to 1200

MHz, 1.5 dB or lower)
J0395 Fixed attenuator for high-power (30 dB, 30 W,

DC to 9 GHz)
J0078 High power attenuator

(N type, 20 dB, 10 W, DC to 18 GHz)
B0472 Fixed attenuator for high-power

(N type, 30 dB, 100 W, DC to 18 GHz)
34AKNF50 Ruggedized K-to-Type N Adapter
MA2507A DC Block Adaptor

(50 Ω, 9 kHz to 3 GHz, ±50 V)
J0805 DC block, N type

(10 kHz to 18 GHz, made by wineshell)
B0452A Hard carrying case (with casters)
B0452B Hard carrying case (without casters)
B0488 Rear panel protective pad
W1888AW

Assembling guide drawing for rear protective pad
B0481B Soft carrying case supporter
B0479 Soft carrying case (rucksack type)
MA4601A Power Sensor

(100 kHz to 5.5 GHz, –30 to +20 dBm, N connector)
MA4701A Power Sensor

(10 MHz to 18 GHz, –30 to +20 dBm, N connector)
MA4703A Power Sensor

(50 MHz to 26.5 GHz, –30 to +20 dBm, APC3.5(P)

connector)
MA4705A Power Sensor

(50 MHz to 32 GHz, –30 to +20 dBm, APC3.5(P)

connector)
J0370A Sensor connecting cord, 1.5 m (for power

meter option)
J0370C Sensor cord, 2.5 m (for power meter option)
J0370E Sensor cord, 5 m (for power meter option)
J0370G Sensor cord, 10 m (for power meter option)
MA2741A External Mixer (26.5 to 40 GHz)
MA2742A External Mixer (33 to 50 GHz)
MA2743A External Mixer (40 to 60 GHz)
MA2744A External Mixer (50 to 75 GHz)
MA2745A External Mixer (60 to 90 GHz)
MA2746A External Mixer (75 to 110 GHz)
J0364 APC-3.5 to N conversion connector

(for MA4703A and MA4605A)

Model/order No. Name

– Main frame –

MS2687B Spectrum Analyzer

– Standard accessories –

Power cord, 2.6m :1 pc
J0996B RS-232C cable :1 pc
Z0744 Memory card (32MB) :1 pc
F0014 Fuse, 6.3 A :1 pc
MX268001A File Transfer Utility :1 pc
W1754AE MS2681A/83A/87B operation manual :1 copy

– Options –

MS2687B-01 Precision frequency reference

(Aging rate: 5 x 10

–10

/day)
MS2687B-02 Narrow resolution bandwidths (FFT)
MS2687B-04 Digital resolution bandwidth
MS2687B-05 Rubidium reference oscillator
MS2687B-09 Ethernet interface
MS2687B-18 I/Q unbalanced input
MS2687B-21 Power meter function
MS2687B-23 Range expansion power meter function
MS2687B-34 4 GHz LO output
MS2687B-41 Power meter function retrofit
MS2687B-43 Range expansion power meter function retrofit
MS2687B-44 Range expansion power meter function

upgrade
MS2687B-46 Auto power recovery
MS2687B-47 Rack mount (IEC) without handles
MS2687B-48 Rack mount (JIS) without handles

– Warranty –

MS2687B-90 Extended three year warranty service
MS2687B-91 Extended five year warranty service

– Measurement software –

MX268701B W-CDMA Measurement Software
W1746AE W-CDMA Measurement Software operation

manual
MX268702A GSM Measurement Software
W1854AE GSM Measurement Software operation

manual
MX268703A cdma Measurement Software
W1865AE

cdma Measurement Software operation manual
MX268704A 1xEV-DO Measurement Software
W2090AE 1xEV-DO Measurement Software operation

manual
MX268705A π/4DQPSK Measurement Software
W1866AE π/4DQPSK Measurement Software operation

manual
MX268730A WIRELESS LAN Measurement Software
W2080AE WIRELESS LAN Measurement Software

operation manual
MX268760A TD-SCDMA Measurement Software
W2593AE TD-SCDMA Measurement Software operation

manual
MX268751A W-CDMA Release5 uplink Measurement

Software
W2617AE W-CDMA Release5 uplink Measurement

Software operation manual

Frequency range: 18 to 110 GHz
Frequency band:

Band Frequency range Mixer harmonics order [N]
K 18 to 26.5 GHz 4
Ka 26.5 to 40 GHz 6

Frequency Q 33 to 55 GHz 8

U 40 to 60 GHz 9 or 10
V 50 to 75 GHz 11 or 12
E 60 to 90 GHz 13 or 14
W 75 to 110 GHz 16

Span setting range 0 Hz, (100 x N) Hz to each bandwidth
Mixer transform loss

15 to 85 dB

setting range
Maximum input level Depend of external mixer
Average noise level Depend of external mixer
Frequency response Depend of external mixer
Adaptive mixer Only 2 port mixer
Local frequency 4 to 7 GHz
IF frequency 460.69 or 466 MHz
Display gain 0 ±2 dB (External mixer input level –10 dBm, Mixer transform loss 15 dB)

Mainframe specifications when external mixer is used.

Amplitude

Input/Output

External Mixer

ANRITSU CORPORATION

1800 Onna, Atsugi-shi, Kanagawa, 243-8555 Japan
Phone: +81-46 - 223 - 1111
Fax: +81-46 - 296 - 1264

•

U.S.A.
ANRITSU COMPANY
TX OFFICE SALES AND SERVICE

1155 East Collins Blvd., Richardson, TX 75081, U.S.A.
Toll Free: 1-800 - ANRITSU (267 - 4878)
Phone: [phone] - 1777
Fax: +1-972 - 644 - 3416

•

Canada
ANRITSU ELECTRONICS LTD.

700 Silver Seven Road, Suite 120, Kanata,
ON K2V 1C3, Canada
Phone: +1-613 - 591 - 2003
Fax: +1-613 - 591 - 1006

•

Brasil
ANRITSU ELETRÔNICA LTDA.

Praca Amadeu Amaral, 27 - 1 andar
01327-010 - Paraiso, Sao Paulo, Brazil
Phone: [phone] - 2511
Fax: +55-11 - 3886940

•

U.K.
ANRITSU LTD.

200 Capability Green, Luton, Bedfordshire LU1 3LU, U.K.
Phone: [phone]
Fax: +44-1582 - 731303

•

Germany
ANRITSU GmbH

Nemetschek Haus Konrad-Zuse-Platz 1 81829
München, Germany
Phone: [phone]
Fax: [phone]

•

France

ANRITSU S.A.

9, Avenue du Québec Z.A. de Courtabœuf 91951 Les
Ulis Cedex, France
Phone: +33-1-60 - 92 - 15 - 50
Fax: +33-1 - 64 - 46 - 10 - 65

•

Italy

ANRITSU S.p.A.

Via Elio Vittorini, 129, 00144 Roma EUR, Italy
Phone: [phone] - 9711
Fax: +39-06 - 502 - 2425

•

Sweden

ANRITSU AB

Borgafjordsgatan 13 164 40 Kista, Sweden
Phone: [phone]
Fax: [phone]

•

Finland

ANRITSU AB

Teknobulevardi 3-5, FI-01530 Vantaa, Finland
Phone: +358-9 - 4355-220
Fax: +358-9 - 4355 - 2250

•

Denmark

Anritsu AB Danmark

Korskildelund 6 DK - 2670 Greve, Denmark
Phone: [phone]
Fax: [phone]

•

Singapore

ANRITSU PTE LTD.

10, Hoe Chiang Road #07-01/02, Keppel Towers,
Singapore 089315
Phone: [phone]
Fax: +65-6282 - 2533

•

Hong Kong

ANRITSU COMPANY LTD.

Suite 923, 9/F., Chinachem Golden Plaza, 77 Mody
Road, Tsimshatsui East, Kowloon, Hong Kong, China
Phone: [phone] - 4980
Fax: [phone] - 3545

•

P. R. China
ANRITSU COMPANY LTD.
Beijing Representative Office

Room 1515, Beijing Fortune Building, No. 5 North
Road, the East 3rd Ring Road, Chao-Yang District
Beijing 100004, P.R. China
Phone: +86-10 - 6590-9230

•

Korea
ANRITSU CORPORATION

8F Hyun Juk Bldg. 832-41, Yeoksam-dong,
Kangnam-ku, Seoul, 135-080, Korea
Phone: +82-2 - 553-6603
Fax: +82-2 - 553 - 6604

•

Australia
ANRITSU PTY LTD.

Unit 3/170 Forster Road Mt. Waverley, Victoria, 3149,
Australia
Phone: [phone] - 8177
Fax: +61-3 - 9558 - 8255

•

Taiwan
ANRITSU COMPANY INC.

7F, No. 316, Sec. 1, NeiHu Rd., Taipei, Taiwan
Phone: [phone] - 1816
Fax: +886-2 - 8751 - 1817

Specifications are subject to change without notice.

Catalog No. MS2687B-E- A - 1 - (4.00) Printed in Japan 2005-10 ddc/CDT

050912

Printed on 70%
Recycled Paper