Audio Analyzer
AM/FM Signal Generator

MAS-8400series

Freely customize measurements with software control
The MAS-8400 series combines the functions of an audio analyzer with an AM/FM signal generator, and you can choose from three models
according to your application. This product pursues high-speed measurement, space saving, energy saving, and low cost for production sites.

Audio analyzer + AM/FM signal generator
Audio Analyzer
Signal Generator

Audio Analyzer

Signal Generator• The functions of the two models are consolidated into one. Contributing to lower capital investment costs.
• Compact design with a height of 100 mm and a weight of 6 kg. Space saving at the production site is realized.
• Car navigation system and car audio inspection functions are installed in one unit.

Audio analyzer
MAS-8401OSC
MAS-8401

Audio Analyzer• The adoption of FFT and the automatic range of high-speed switching contribute to shortening the inspection tact.
• Equipped with spectrum display function that can also be used for evaluation applications.

AM/FM signal generator

Signal Generator• A wide output level range (-20 to 132dBμV EMF * option) provides one rank higher performance.
• Internal modulation frequency can be set in 1Hz increments for various job conditions.
• High-speed response contributes to shortening inspection tact

Signal Generator

Audio Analyzer

Main Functions
MAS-8401OSC

Measurement
sectionMAS-8410OSC
MAS-8410
MAS-8421

Oscillator
sectionSG section

MAS-8401

MAS-8410OSC

MAS-8410

MAS-8421

DC voltage measurement―

AC voltage measurement―

Distortion measurement―

Frequency measurement

―

OSC

―

―

RF signal output――

FM modulation――

FM stereo modulation――

AM modulation

―

―

―

CONTROL

APIThe MAS-8400 series sets numerical values during inspection, operation and obtain measurement results
through the software.

Controlled by PC application

Frequently used settings and automatic measurement can be created as an application.
The product comes with an API that runs in a .Net Framework environment.
At the same time, it includes examples created using Microsoft Visual Studio and sample code for API calls.

Connect to your PC via LAN port or USB on the rear panel. Use the included application to control it.
① The following is an example of C # code that sets the AA AC range by connecting to theMAS-8400 via LAN.
----------------------------------------------------------------------------------------------------- ----------------using System;
namespace ConsoleApp1{
class Program{
public static void Main(){// Create an instance of MAS8400 Control class
MAS8400.Control mas8400 = new MAS8400.Control ();int error = 0; // error flag// Connect with MAS-8400 via LAN (when connecting with IP address: 172.29.134.5)// Set the IP address according to your environment
if (mas8400.Connect_LAN ("172.29.134.5")! = 0){// Error processing (when the return value is not 0)// Acquire error contents from Err_Message property and display
Console.WriteLine ("LAN connection" + mas8400.Err_Message);error ++;}LAN// Set AC range (0: When setting to auto range)
if (mas8400.AC_Range (0)! = 0){// Error processing (when the return value is not 0)// Acquire error contents from Err_Message property and display
Console.WriteLine ("AC range setting" + mas8400.Err_Message);error ++;}USB// output resultif (error == 0){// Successful completion
Console.WriteLine ("Setting was successful");}Console.WriteLine ("Press any key to exit ...");
Console.ReadKey ();4.2 Method(1)USB communication connection (common)

Method nameFormatArgument
Return value
Description

Connect_USB
int Connect_USB (String COM_Name);
COM_Name: Virtual COM port name (eg “COM3”)
0: Success-1: Connection Failed
Establish a USB connection.

(2)LAN communication connection (common)

Method nameFormatArgument
Return value
Description

Connect_LAN
int Connect_LAN (String IP_Address);
IP_ Address: IP address of MAS-8421 (eg “192.168.10.20”)
0: Success-1: Connection Failed
Establish a LAN connection.

}}}------------------------------------------------------------------------------------------------------------------------CASE
The external display is connected to the device and controlled by the built-in application
Connect the display using the HDMI port on the rear panel.

Automotive navigation
Car audio

Corresponding model for each inspection
Electronic musical instrument
Audio equipment
Broadcast equipment

Communication equipment
Radio2HDMIUSB

MAS-8401OSC

MAS-8410OSC• Tuner reception• Signal source for measurement• Audio signal measurement• Signal source for measurement• Audio signal measurement

MAS-8421• Tuner reception

SPECIFICATIONS
Model number
Measurement section

MAS-8401OSC

Input impedance
Input range
Measurement accuracy
Measurement resolution
Measuring channel

AC Voltage
measurement

Input method
Input impedance
Input range
Response characteristics
Effective measurement range

Levelmeasurement

Measurement accuracy
Measurement resolution
Frequency response
Measurement frequency
Measurement accuracy
Measurement resolution

Distortion
measurement

Measurement mode
Residual distortion
factorFilterType
Aural compensation (PSOPHO)Frequency measurement range

Frequency
measurement

Resolution display
Accuracy
Input range

Oscillator section

Distribution type 2 output
Unbalanced
Output impedance
600Ω
10Hz ～ 1kHz,0.1Hz step
Oscillation frequency
1.001kHz~110kHz,1Hz step
Frequency setting accuracy≦ ±2%
Level setting resolution
0.1dB
Output level range+20dBV to -79.9dBV(OPEN)+20dBV to -70dBV(OPEN)≦ ±0.4dBV : 20Hz to 20kHz
Frequency response(1kHz ref.)≦ ±0.8dBV : 10Hz to 110kHz(1kHz ref.)+10dBV typical value≦ -100dB : 100.1Hz to 15kHz(80kHzBW)Distortion factor≦ -90dB :10Hz to 100Hz(80kHzBW)
15.001kHz to 20kHz(80kHzBW)≦ -80dB : 10Hz to 110kHz(500kHzBW)
Number of outputs
Output method

OSC

MAS-8410OSC

MAS-8410

1CH≧ 1MΩ
316mVFS to 100VFS 4 range (AUTO/MANU)
Full scale value ±0.5% for each range
0.1% of the full scale value for each range
Switching 2CHBalanced, unbalanced switching≧ 100kΩ
316mV（-10dBV）～ 100.0V（40dBV）6 range(AUTO/MANU)
True mean value
0.0316mVrms to 100.0Vrms≦ ±0.4dBV（40dBV to -70dBV at 1 kHz）
0.1% of each full scale value
40dBV to -70dBV≦ ±0.8dBV (10Hz ～ 110kHz) 1kHz standard（*excluding 20Hz to 80kHz）≦ ±0.4dBV (20Hz to 80kHz) 1kHz standard
10Hz to 110kHz≦ ±1dB (20Hz ～ 20kHz) ≦ ±3dB (10Hz to 110kHz)
0.1% of each full scale value
THD and THD+N Notch filter. Frequency setting possible
Typical value at 10dBV input level to 10 dBV≦ -100dB :10Hz to 15kHz(80kHzBW)≦ -90dB :15.1kHz to 20kHz(80kHzBW)≦ -80dB :20.1kHz to 110kHz(500kHzBW)
HPF(100Hz/200Hz/400Hz),LPF(20kHz/80kHz),PRE LPF(15kHz/20kHz)
IEC-A,CCIR/ARM,DIN-A
10Hz to 110kHz
Frequency ≧ 100Hz :5 digits display
Frequency < 100Hz : 0.01Hz±5 × 10⁻⁵ ± 1 digit
25mVrms to 100.0Vrms

Measuring channel
DC Voltagemeasurement

MAS-8401―Output method
Frequency range
Set resolution
Frequency accuracy
Set resolution

RF signal
outputOutput levelaccuracyStandardOptions
StandardOptions

Output impedance
VSWR
Spurious
Residual FM
Residual AM
Leakage disturbanceAttenuator
RANGE OUT
Frequency deviation
Set resolution
Modulation accuracy

FM modulation

Distortion factor
Parasitic AM
External
modulation

Frequency range
Frequency response
Impedance
Input voltage

Internal modulation frequency

Distribution type 2 output
Unbalanced600Ω
10Hz ～ 1kHz,0.1Hz step
1.001kHz~110kHz,1Hz step
≦ ±2%
0.1dB
+20dBV to -79.9dBV(OPEN)+20dBV to -70dBV(OPEN)≦ ±0.4dBV : 20Hz to 20kHz(1kHz ref.)≦ ±0.8dBV : 10Hz to 110kHz(1kHz ref.)+10dBV typical value≦ -100dB : 100.1Hz to 15kHz(80kHzBW)≦ -90dB :10Hz to 100Hz(80kHzBW)
15.001kHz to 20kHz(80kHzBW)≦ -80dB : 10Hz to 110kHz(500kHzBW)FM stereo
modulation

Modulation mode
L,R separation
Modulation range
Set resolution
Pilot setting range
Pilot setting resolution
Preemphasis
Modulation range
Set resolution
Modulation accuracy―AM modulation

RF frequency (MHz)Distortion factor

0.4 ～ 1.7
0.15 ～ 170

Internal modulation frequency
Frequency range
ExternalFrequency response
Impedance
modulation
Input voltage

DDS method
100kHz to 170MHz
100 Hz±5×10⁻⁶-20dBµV to 126dBµV（EMF)-20dBµV to 132dBµV（EMF)
0.1 dB±1.5 dB :0 to 126 dBμV (EMF)±2.0 dB :-20 to 0 dBμV (EMF)±1.5 dB :0 to 132 dBμV (EMF)±2.0 dB :-20 to 0 dBμV (EMF)
50 Ω≦1.3Harmonics : ≦-30dBc / Non-harmonic : ≦-40dBc≦-80dB(AF 1kHz, FM 75kHz)≦-55dB(AF 1kHz, AM 30%)
Does not affect performance during 0dBμV output
Semiconductor
Signal output for external relay drive
0kHz to 135kHz
0.1kHz10.7 MHz ±1 MHz、
76 MHz to 108 MHz : ± (set value ×0.1+0.5) kHz
0.3 MHz to 170 MHz : ± (set value ×0.1+1) kHz≦0.05% (10.7MHz ± 1MHz, 76 to 108MHz)≦0.1% (0.3MHz to 170MHz)(AF 1kHz, FM 75kHz, BW50～20kHz, DE-EMPHASIS 50μs)≦0.5%(10.7MHz ± 1MHz, 76 to 108MHz)(AF 1kHz, FM 75kHz)
50Hz to 100kHz±1dB (1kHz ref.)10kΩ(unbalanced)
1Vp-p ± 2%
LEFT 10Hz to 100kHz, 1Hz step
RIGHT 10Hz to 100kHz, 1Hz step
Except mono mode, the setting of ≧ 15kHz is not guaranteed.
MONO/L=R/L/R/L=-R/L&R/OFF≧ 55dB
0 to 135％（75kHz/100％）(MONO only to 150%)
1%
0 to 15％0.1%
25μs / 50μs / 75μs / OFF
0 to 100％>126dBµV(EMF) 30％ Max
0.1%
0.4 MHz to 1.7 MHz ：± ( set value × 0.1+1)%
0.15 MHz to 170 MHz：± ( set value × 0.1+2 )%AF 1kHz, modulation ≦80%, RF output ≦126dBμV(EMF)
Modulation
0 to 30%30.1 to 60%
60.1 to 80%≦ 0.5%≦ 1.5%≦ 3.0%≦ 1.5%≦ 3.0%≦ 5.0%
However, RF output level 120dBμV（EMF）
10Hz to 20kHz,1Hz step
50Hz to 20kHz± 1dB (1kHz ref.)10k Ω (unbalanced)
1Vp-p ± 2%

Application's operating environment

MAS-8401OSC

InterfaceMAS-8401

MAS-8410OSC

MAS-8410

MAS-8421

HDMI × 1 / LAN（TCP/IP, 10/100 Base-T）× 1 / USB-A × 3 / USB-B × 1

Rated supply voltage
Power consumption

MAS-8401OSC、MAS-8401、MAS-8421

Output level range

General Specifications
Model number

Model number
SG section

AC100V to 240V 50/60Hz
Approx. 45VA

Approx. 40VA

Approx. 35VA

Approx. 30VAOSMicrosoft Windows 7 SP1 / 10CPUIntel、AMD 3 GHz or higher

Memory4 GB or more

Approx. 20VA

Hard drive free space

10 GB or more

External dimensions（W x H x D mm）

360×100×430

300×100×385

240×100×385

CD-ROM drive

WeightApprox. 6㎏

Approx. 4.5㎏

Approx. 4㎏

Screen resolution

Accuracy guaranteed temperature and humidity range

10℃ to 35℃、5％ to 85％ RH（no condensation)

Storage temperature and humidity range-10℃ to 50℃、5％ to 95％ RH（no condensation)

OthersRequired during installation
1024 × 768 or higher
USB driver (provided by us) must be installed.NET Framework Ver.4.7.2 or higher installation required

ORDERING INFORMATIONS
Main unit

Option*Model number
Description
MAS-8401OSC
Audio analyzer(with/OSC)+AM/FM signal generator
MAS-8401
Audio analyzer +AM/FM signal generator
MAS-8410OSC
Audio analyzer(with OSC)
MAS-8410
Audio analyzer
MAS-8421
AM/FM signal generator
High output level option for model MAS-8401 and MAS-8421* It is possible to correspond according to the customer's use. Please feel free to contact us.

Products that can be used together
For BTL (Balanced Transformer Less)
amplifier, balance to unbalance
adapter.

MBA-9407

Informations
In order to use this product safely for a long time, please use our calibration and repair service.

E-mail : PWsales@hq.keisoku.co.jp
TEL : +81-44-223-7950*The contents of this catalog are as of August 2020. For purchase, please check the latest specifications, price, availability. *The names of companies and products mentioned herein
are trademarks or registered trademarks of their respective companies. *Specifications, shapes, etc. described are subject to change without prior notice due to improvements, etc.
*The contents described are accurate information, but if there is a point that you notice such as an error by any chance, we would appreciate it if you could inform us.

PowerElectronics Sales Dept.
Hiyoshi Operation

4-11-1 Minamikase, Saiwai-ku, Kawasaki-shi,
Kanagawa, Japan
TEL +81-44-223-7950 FAX +81-44-223-7960

E-mail : PWsales@hq.keisoku.co.jp / https://www.keisoku.co.jp
Published in August 2020 ●CM-0145-2008