Anritsu MS9710C Data Sheet

MS9710C

Optical Spectrum Analyzer

600 to 1750 nm

High Performance, Portable Optical Spectrum Analyzer

Compact High Performance

Compact High Performance

■ Wavelength accuracy of ±20 pm (WDM-band)

■ Dynamic range of 42 dB (0.2 nm from peak wavelength),

70 dB (1 nm from peak wavelength)

■ Resolution (FWHM) of 0.05 nm max.

■ WDM measurement of wavelength, level,

and SNR for up to 300 channels

■ –90 dBm optical reception sensitivity

■ Tracking function with tunable laser source

The MS9710C is a diffraction-grating spectrum analyzer for analyzing optical spectra in the 600 to 1750 nm wavelength
band. In addition to uses such as measurement of LD and LED spectra, it has functions for measuring the transmission
characteristics of passive elements such as optical isolators, as well as NF/Gain of optical fiber amplifier systems.
In addition to its basic features, the superior stability and reliability of the diffraction grating (patent pending) offer the
severe level and wavelength specifications particularly in the WDM band.
This analyzer has the dynamic range, reception sensitivity and sweep speed requested by users, backed by Anritsu’s
high-level technology. The high sensitivity meets the exacting demands placed on today’s measuring instruments.In
particular, the excellent wavelength and level specifications fully meet the dense WDM requirements (1520 to 1620 nm).
The MS9710C Optical Spectrum Analyzer is the successor to the popular MS9710B but with improved functions and
higher performance. The specifications have been upgraded for the important 1.55 µm band for WDM communications
and have also been optimised to include the new requirements for the L-band (1570 to 1620 nm) use. In addition to the
high reliability and excellent basic performance, this analyzer has a full range of application functions to support accu­rate measurement in the fastest possible time.

70 dB dynamic range

The dynamic range at 0.2 nm from the peak wavelength is bet­ter than 42 dB and is a high 58 dB min. at 0.4 nm from the
peak, permitting high-accuracy measurement of DWDM sys­tems with a 50 GHz (0.4 nm) channel spacing. The analyzer
demonstrates its excellence in SNR measurement of WDM
light sources, as well as in evaluation of narrow-band optical
band pass filters.

Distance from peak wavelength 0.2 nm 0.4 nm 1 nm
Normal dynamic range mode 42 dB (45 dB typical) 58 dB 62 dB
High dynamic range mode 42 dB (45 dB typical) 60 dB 70 dB

High-dynamic range measurement example with DFB-LD
spectrum passed via narrow-band Band-Pass Filter (BPF).

DFB-LD Narrow-band BPF MS9710C

2

–90 dBm guaranteed optical reception sensitivity

Full function lineup

The MS9710C has achieved an improved S/N over a wide
range by countering the effects of noise and stray light. The
RMS noise level at wavelengths from 1250 to 1600 nm is –90
dBm max. The screen display below is the waveform obtained
when measuring a 1550 nm DFB-LD optical source with a
power level of –85 dBm; only 25 seconds are required for one
sweep.
The S/N ratio can be improved using sweep averaging.

Waveform after 10 averages

Relying on WDM transmission

As a result of the need for increased transmission capacity,
R&D into large-capacity transmission techniques is becoming
more active and Wavelength Division Multiplexing (WDM) is
now in use. This WDM transmission technology requires
quantitative measurement of the signal quality and wavelength
transmission characteristics of each channel.
Measuring instruments for this purpose require highly accurate
wavelength and level measurements. Furthermore, accurate
measurement of fiber-amplifier NF requires extremely good
polarization dependant loss characteristics and level linearity
specifications.
The MS9710C design achieves excellent wavelength and level
specifications for this purpose in the 1520 to 1620 nm wave­length band and also in the extended band (L-band) to 1620
nm. In particular, the wavelength accuracy can be calibrated
automatically using an optional internal reference wavelength
light source; the post-calibration accuracy is better than ±20 pm.

Specifications for WDM application

Mainframe,
option
Wavelength ±20 pm (1530 to 1570 nm)
accuracy*1±50 pm (1520 to 1600 nm)
Wavelength
resolution
Resolution ≤±3 % (1530 to 1570 nm, ≤±3 % (1520 to 1620 nm,
accuracy resolution: 0.2 nm) resolution: 0.2 nm)
Level ±0.1 dB (1530 to 1570 nm)
flatness to ±0.3 dB (1520 to 1620 nm)
wavelength Resolution: 0.5 nm, ATT:off
Polarization
dependency

Level
linearity

∗1: After calibration with optical reference wavelength light sourceS
∗2: L-band enhancement

MS9710C With Option 15*

±20 pm (1520 to 1620 nm)

50 pm (FWHM of internal optical BPF)

±0.1 dB (1520 to 1620 nm)

±0.05 dB (1550/1600 nm)

±0.05 dB (1550 nm) ±0.05 dB (1550/1600 nm)
–50 to 0 dBm (ATT: off)
–30 to +20 dBm (ATT: on)

2

In addition to its excellent basic functions, the MS9710C
comes with a full lineup of other useful functions summarized
in the following table.

Device analysis

Waveform analysis methods; SMSR, half-width evaluation, WDM

Application
measurement

Modulation, pulsed Max.frequency range (VBW) = 1 MHz (See
light measurement ‘applications’ section.)

Markers

Power monitor Also functions an optical power meter
Vacuum Converts displayed wavelength to value in

wavelength display vacuum
External interfaces GPIB, RS-232C, VGA monitor output

DFB-LD waveform analysis

Waveform analysis using zone marker

Half-width measurement by threshold method

For analyzing and evaluating waveforms of
optical devices (DFB-LDs, FP-LDs, LEDs)

For waveform analysis by RMS and threshold
waveform analysis

EDFA NF and gain measurement, polarization
mode dispersion measurement (See ‘applica­tions’ section.)

Multimarkers:

Marker function for max. 300 points
(See ‘applications’ section.)

Zone markers:

For waveform analysis within zone

Peak/dip search: Searches for a peak or dip

3

● Easy-to-read color TFT-LCD

● Thermal

printer built-in

The MS9710C screen
display can be hard­copied at high speed the
internal printer, as well
as output to an external
printer via the GPIB.

Pictures actual size

● 3.5 inch internal FDD

In addition to saving and recalling measurement data,
etc., waveforms saved to floppy disk can be easily
and directly read by a personal computer.
The PC screen shown on the right is displaying an
image of the MS9710C screen saved to floppy disk.
Screen images can be saved to FD media and output
as Windows
the data can be output in text-file format, it can be
manipulated easily using spreadsheet software.

®

bitmap-format files. In addition, since

4

● Basic mea-

surement
direct keys

Frequently-used func­tions can be set direct­ly with these hard
keys. Even a novice
can perform basic
measurements easily
using these keys.

● Cleanable optical

input connector

Five connector types can be used:
FC/PC, DIN, ST, SC, HMS-10/A.
(optical return loss of 35 dB min.)
The input connector can be
removed and refitted easily for fast
cleaning.

5

Option is installed.

Applications for Every Need

Spectrum analysis for WDM communication systems

The wavelength, level, and SNR of up to 300 WDM channels
can be analyzed.
A new noise level left/right average function (shown below) has
been added to SNR measurement. In addition, the noise level
is normalized to a per nm figure. Accurate SNR measurement
can be achieved due to the high resolution accuracy of the
MS9710C.

The measurement results described above can be switched to
a table display that can be saved and recalled in text format.
Both the wavelength and frequency are shown in the table.

PMD = K——— × ————

where: K is the mode coupling factor and C is the speed of

light (m/s).

It is possible to measure the PDM (Polarization Mode
Dispersion)

SLD output

MS9710C

Optical input

PRM: Polarization rotation module (sold separately)

The diagram below shows PDM measurement of a 1 m
PANDA fiber.

N – 1

C

PRM

PRM

λ

1 × λ2

∆λ

Polarization mode dispersion

An important factor determining the upper limit of the transmis­sion bit rate is the polarization mode dispersion (PMD). PMD
is measured in the time and wavelength domains.The
MS9710C can be used in the fixed analyzer method to perfor m
simple and automated measurement in the wavelength domain
and immediately computes the PMD by processing data from
the measured waveform. The wavelength difference (λ
between the peak wavelength (λ
Nth peak (λ
the following equation.

2) are read directly and the PMD is calculated from

1) and the wavelength of the

2 – λ1)

NF measurement of fiber amplifier (EDFA)

NF measurement by the optical method using an optical spec­trum analyzer measures the light input to and output from the
EDFA. NF is deter mined by the beat noise between the opti­cal signal and the Amplified Spontaneous Emission (ASE)
from the EDFA as well as by the beat noise between the ASE.
Since the MS9710C measures the ASE level with ver y high
accuracy, three methods can be used to measure NF: 1.
Pulse measurement (JIS: under discussion), 2. Level calibra­tion using fitting, and 3. Polarization nulling.Moreover, mea­surement can be performed with the required dynamic range,
level linearity and polarization dependency.

6

Built-in attenuator for high-power optical sources

When the built-in attenuator is switched ‘ON’, optical inputs of
up to +23 dB can be measured. And since the attenuation is
automatically corrected internally, there is no need for the user
to re-calibrate the measurement. The screen display below
shows the measurement of a +20 dBm optical spectrum ampli­fied by an EDFA.

Convenient light source option, including refer-

ence wavelength light source for better accuracy

The following diagram shows the spectrum of the SLD light
source output from Port 2.
When this light source is used instead of the earlier white light
source for measurement of the wavelength transmission char­acteristics of optical receiver elements, it is possible to achieve
a 20 dB wider dynamic range.

Spectrum of SLD light

The following figure is a measurement example of the trans­mission characteristics an optical band pass filter using the
SLD light source.

Any one of the Wavelength reference & SLD light source
(Option 13), SLD light source (Option 14), Wavelength reference
light source (Option 05), and White light source (Option 02) can
be installed in the MS9710C.
The block diagram of the SLD light source & Reference wave­length light source option is shown below. This option has two
separate output ports: Port 1 for wavelength calibration, and the
Port 2 for measuring transmission characteristics. When the
MS9710C is calibrated automatically by inputting the reference
wavelength light source, post-calibration wavelength accuracy in
the 1520 to 1620 nm range is better than ±20 pm (Option 15).
This is very useful in precision absolute measurement of the
wavelengths of light sources used in WDM systems.

SLD light

source

Block diagram of SLD light source & reference wavelength light

Acetylene

(C2H2) cell

SM fiber

SM fiber

Port 1 (reference
wavelength light
output)

Port 2 (SLD light
output)

Measurement of optical band pass filter

If this dynamic range is not required, a lower-cost white light
source can be installed instead. The following figure shows
the spectrum of the white light source using SM fiber (for GI
fiber, refer to the specifications of Option 02).

Spectrum of white light source

Note:The optical input section of the MS9710C is designed for connecting

signal mode fibers. There is the MS9780A Optical Spectrum Analyzer
which have the optical input section designed for connecting multi­mode fibers (62.5/125 µm).

7

Measurement of modulated and pulsed light

VGA output connector

The synchronization signal for the modulated/pulsed light
being measured is input to the external trigger connector on
the rear panel. With this analyzer, the data can be controlled
by this sync signal. As a result, the spectrum of the modulated
or pulsed light can be measured accurately without data loss.
The waveform in the diagram below shows measurement of an
optical pulse (OTDR light source) with a pulse width of 1 µs
and a duty of 1%.
For accurate spectrum measurement, the VBW must be set to
a wider bandwidth than the modulation frequency of the mea­sured light. The maximum settable VBW in the MS9710C is 1
MHz. (Refer to the specifications for the relationship between
VBW, received light sensitivity and sweep time.)

A VGA output connector is provided on the rear panel of the
MS9710C for displaying the measurement screen on an exter­nal monitor.

8

Specifications

Main frame, option MS9710C With Option 15 (L-band enhancement)
Applicable optical fiber 10/125 µm SM fiber (ITU-T G.652)
Optical connector*

Measurement
range

Accuracy
Stabitity ±5 pm

Linearity ±20 pm (1530 to 1570 nm)

Resolution 0.05, 0.07, 0.1, 0.2, 0.5, 1.0 nm (RBW: 3 dB optical filter ; transmission bandwidth)
Wave- Read resolution 5 pm
length ≤±2.2 % (1530 to 1570 nm, resolution: 0.5 nm)

Resolution*

Measurement

range

Level

Accuracy ±0.4 dB (1300/1550 nm, input: –23 dBm, resolution: ≥0.1 nm)

Stability ±0.02 dB (1 min, resolution: ≥0.1 nm, input: –23 dBm, no polarization fluctuation)

Flatness

Linearity

Polarization dependency

Dynamic range

Optical return loss ≥35 dB (1300/1550 nm)

Sweep

Display 6.4 inch, color TFT-LCD
Memory A/B (2 trace), 3.5 inch FDD (for MS-DOS®format)
Printer Internal (thermal type)
Interface GPIB, RS-232C, VGA output

Operating conditions Relative humidity: ≤90% (no condensation, FDD: 20 to 80%)
Power 85 to 132 Vac/170 to 250 Vac, 47.5 to 63 Hz, 150 VA (max.)

Dimensions and mass 320 (W) x 177 (H) x 350 (D) mm, ≤16.5 kg

7

EMC*
LVD EN61010-1: 2001 (Pollution Degree 2)

∗1: One of these connector is attached. Please specify when ordering.

After Wl cal (ref) at wavelength reference optical light source (Option 05/13)

∗2:

After Wl cal (Ext) at DFB-LD and soon external optical light source

∗3:
∗4: Actual screen resolution, 0˚ to 30˚C
∗5: Setting resolution: 0.05 nm, wavelength: 1550 nm, optical attenuator: off
∗6:Typical value for reference; not guaranteed specification
∗7: Electromagnetic compatibility

1

User replaceable (FC, SC, ST, DIN, HMS-10/A), factory option (E2000, FC-APC, SC-APC, HRL-10)
600 to 1750 nm
±20 pm (1530 to 1570 nm)*

±200 pm (1530 to 1570 nm)*3, ±300 pm (600 to 1750 nm)*

≤±3 % (1530 to 1570 nm, resolution: 0.2 nm)
≤±7 % (1530 to 1570 nm, resolution: 0.1 nm)
≤±4 % (1520 to 1530 nm, 1570 to 1620 nm, resolution: 0.5 nm)
≤±5 % (1520 to 1530 nm, 1570 to 1620 nm, resolution: 0.2 nm)

4

≤±10 % (1520 to 1530 nm, 1570 to 1620 nm, resolution: 0.1 nm)
≤±7 % (1600 to 1520 nm, 1620 to 1750 nm, resolution: 0.5 nm)

≤±15 % (1600 to 1520 nm, 1620 to 1750 nm, resolution: 0.2 nm)
≤±30 % (1600 to 1520 nm, 1620 to 1750 nm, resolution: 0.1 nm)

–65 to +10 dBm (600 to 1000 nm, 0 to +30˚C, optical ATT:off)
–85 to +10 dBm (1000 to 1250 nm, 0 to +30˚C, optical ATT:off)
–90 to +10 dBm (1250 to 1600 nm, 0 to +30˚C, optical ATT:off)
–75 to +10 dBm (1600 to 1700 nm, 0 to +30˚C, optical ATT:off)
–55 to +10 dBm (1700 to 1750 nm, 0 to +30˚C, optical ATT:off)
–60 to +10 dBm (600 to 1000 nm, +30 to +50˚C, optical ATT:off)
–80 to +10 dBm (1000 to 1250 nm, +30 to +50˚C, optical ATT:off)
–85 to +10 dBm (1250 to 1600 nm, +30 to +50˚C, optical ATT:off)
–70 to +10 dBm (1600 to 1700 nm, +30 to +50˚C, optical ATT:off)
–50 to +10 dBm (1700 to 1750 nm, +30 to +50˚C, optical ATT:off)
–70 to +23 dBm (1100 to 1600 nm, 0 to +30˚C, optical ATT:on)
–65 to +23 dBm (1100 to 1600 nm, +30 to +50˚C, optical ATT:on)
[Resolution: ≥0.07 nm, VBW: 10 Hz, sweep average: 10 times]

±0.1 dB (1530 to 1570 nm, resolution: 0.5 nm, optical ATT:off)
±0.3 dB (1520 to 1620 nm, resolution: 0.5 nm, optical ATT:off)
±0.05 dB (1550 nm, –50 to 0 dBm, optical ATT: off) ±0.05 dB (1550/1600 nm, –50 to 0 dBm, optical ATT: off)
±0.05 dB (1550 nm, –30 to +20 dBm, optical ATT: on) ±0.05 dB (1550/1600 nm, –30 to +20 dBm, optical ATT: on)

±0.05 dB (1550/1600 nm), ±0.1 dB (1300 nm) ∗Setting resolution: ≥0.5 nm
High-dynamic range mode (20˚ to 30˚C):

*

5

70 dB (1 nm from peak wavelength), 60 dB (0.4 nm from peak wavelength), 42 dB (0.2 nm from peak wavelength)

Normal mode (20˚ to 30˚C):

62 dB (1 nm from peak wavelength), 58 dB (0.4 nm from peak wavelength), 42 dB (0.2 nm from peak wavelength)

Sweep width: 0, 0.2 to 1200 nm
Sweep speed (typical)

0.5 s (normal dynamic mode, sweep width: 500 nm, VBW: 10 kHz, center wavelength: 1200 nm, sweep start to stop, no optical
input, sampling point: 501)

Operating temperature: 0˚ to +50˚C (FDD: +5˚ to +50˚C), storage temperature: –20˚ to +60˚C,
Shock: 30 G, 11 ms pulse, half sine

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

2

, ±50 pm (1520 to 1600 nm)*

6

*

:

2

3

≤±2.2 % (1520 to 1620 nm, resolution: 0.5 nm)
≤±3 % (1520 to 1620 nm, resolution: 0.2 nm)
≤±7 % (1520 to 1620 nm, resolution: 0.1 nm)

±0.1 dB (1520 to 1620 nm, resolution: 0.5 nm, optical ATT:off)

±20 pm (1520 to 1620 nm)*

2

9

White light source (Option 02)

Optical output ≥–59 dBm/nm (multimode fiber input)*
Wavelength range 900 to 1600 nm
Operating temperature 18˚ to 28˚C

∗1: –65 dBm (typ) measured with MS9710C (at 1 nm wavelength resolution)

which has single-mode fiber at the input.

1

Wavelength reference & SLD light source (Option 13)

Wavelength range 1450 to 1650 nm
Output level

Output level stability*

Spectrum half width >70 nm (typical: 90 nm)
Optical connector
Operating temperature 0˚to 40˚C

Wavelength reference 1530 nm band Acetylene

∗1: Measured after one hour warm-up

>–40 dBm/nm (1550 nm ±10 nm)
>–60 dBm/nm (1450 to 1650 nm)

±0.04 dB (MS9710C setting resolution: 1 nm,

1

no polarization change, constant temperature,
measured for 20 min at 1550 nm)

User replaceable type
(FC, SC, ST, DIN, HMS-10/A)

SLD light source (Option 14)

Wavelength range 1450 to 1650 nm
Output level

Output level stability*

Spectrum half width >70 nm (typical: 90 nm)
Optical connector
Operating temperature 0˚to 40˚C

∗1: Measured after one hour warm-up

>–40 dBm/nm (1550 nm ±10 nm)
>–60 dBm/nm (1450 to 1650 nm)

±0.04 dB (MS9710C setting resolution: 1 nm,

1

no polarization change, constant temperature,
measured for 20 min at 1550 nm)

User replaceable type
(FC, SC, ST, DIN, HMS-10/A)

Wavelength reference light source (Option 05)

Wavelength reference 1530 nm band Acetylene

VBW, sweep speed, minimum light reception sensitivity*

VBW 10 Hz 100 Hz 1 kHz 10 kHz 100 kHz 1 MHz
Sweep speed (typ) 30 s 5 s 0.5 s 0.5 s 0.5 s 0.5 s
Minimum light reception sensitivity*

∗1: Data for reference; not guaranteed specifications
∗2: RMS noise level (1250 to 1600 nm)

Note: Warm-up the MS9710C for about 5 min. to ensure stable operation.The above specifications were obtained 2 hours after power-on.

2

–90 dBm –80 dBm –70 dBm –60 dBm –50 dBm –40 dBm

1

10

Ordering Information

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

Model/Order No. Name

Main frame

MS9710C Optical Spectr um Analyzer

Standard accessories

1

Optical connector adapter*

:1 pc

Power cord, 2.5 m: 1 pc
Z0312 Printer paper: 2 rolls
W1579AE MS9710C operation manual: 1 copy
W1580AE Remote control operation manual: 1 copy

®

MX971003S LabVIEW
MX971003G LabVIEW

driver (RS-232C): 1 pc

®

driver (GPIB): 1 pc

B0329G Front cover: 1 pc

Options

MS9710C-02 White light source*
MS9710C-05 Wavelength reference light source*
MS9710C-13 Wavelength reference & SLD light source*
MS9710C-14 SLD light source*

2

2

2

2

MS9710C-15 L-band enhancement
MS9710C-25 FC-APC connector*
MS9710C-26 SC-APC connector*
MS9710C-27 E2000 connector*
MS9710C-31 EC (Radial) connector*
MS9710C-37 FC connector*
MS9710C-38 ST connector*
MS9710C-39 DIN connector*
MS9710C-40 SC connector*
MS9710C-43 HMS-10/A connector*
MS9710C-47 HRL-10 connector*

3
3

3

3
4
4

4

4

4

3

Application parts

J0654A RS-232C cable (9P-9P)
J0655A RS-232C cable (9P-25P)
J0007 GPIB cable, 1 m
J0617B Replaceable optical connector (FC)
J0618D Replaceable optical connector (ST)
J0618E Replaceable optical connector (DIN)
J0618F Replaceable optical connector (HMS-10/A)
J0619B Replaceable optical connector (SC)
J0635B FC-PC • FC-PC 2M-SM (FC-PC optical fiber cord, 2 m, SM)
Z0282 Ferrule cleaner
Z0283 Replacement reel for ferrule cleaner (for Z0282)
Z0284 Cleaner for optical adapter (stick type)
G0084A Polarization rotation module (for PMD measurement)
B0330C Tilt stand

∗1: Specify the connector to be supplied as the standard connector when ordering the above options.

If the connector is not specified, the FC connector (MS9710C-37) is supplied as standard.

∗2: Factory options; Two units cannot be installed simultaneously.

Exchangeable-type optical connectors (FC, SC, ST, DIN, HMS-10/A) are supplied when specified
at ordering. One conversion cord is supplied for connecting other optical connectors to the FC
connector.

∗3: Factory option
∗4: User replaceable

®

Windows
LabVIEW

is a registered trademark of Microsoft Corporation.

®

is a registered trademark of National Instruments.

11

Specifications are subject to change without notice.

Printed with environment-friendly
vegetable soybean oil ink.

ANRITSU CORPORATION

1800 Onna, Atsugi-shi, Kanagawa, 243-8555 Japan
Phone: [phone]
Fax: [phone]

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•

ANRITSU COMPANY
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Toll Free: 1 - 800 - ANRITSU (267 - 4878)
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•

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Phone: +65- 6282 - 2400
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Printed on 100%
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ANRITSU COMPANY LTD.

Suite 923, 9/F., Chinachem Golden Plaza, 77 Mody
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Phone: [phone]
Fax: [phone]

P. R. China

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Beijing Representative Office

Room 1515, Beijing Fortune Building, No. 5 North Road,
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Phone: [phone]

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040602