Outline
MTX-540X is a high-speed X band transmitter for the micro satellites. 64APSK
technology achieves the world’s highest class frequency efficiency for the earthobservation downlink. MTX-540X enables your satellites to maximum 522 Mbps
downlink.

Features
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64APSK: the highest frequency efficiency for earth observation downlink
High-speed 522 Mbps downlink in less than 150 MHz frequency bandwidth
Adaptive coding and modulation (69 Mbps to 522 Mbps)
Low power consumption (22 watts) & Low mass (about 1.3 kg)Compatible with generic ground receiver (Zodiac Cortex HDR 4G)
ITAR free
Made in JAPANMEISEI ELECTRIC is provider of components and small satellite systems. Since 1955, MEISEI developed more than
3,000 instruments for rockets, satellites, space probes, and space station in collaboration with JAXA, ESA, and NASA.

MEISEI ELECTRIC CO., LTD.

SPECIFICATIONSElectrical characteristics
Frequency
8,025 MHz to 8,400 MHz
Symbol rate
100 Msymbol/s (typ.)Standards
CCSDS 131.2 or DVB-S2*1/S2X*2
QPSK, 8PSK, 16APSK, 32APSK,Modulation
and 64APSKErrorTurbo coding (SCCC) or LDPC*1,2correction
Data rate
69 Mbps to 522 Mbps
+33 dBm (QPSK to 32APSK)RF power+30 dBm (64APSK)
Bandwidth< 150 MHz
FilterCompliant with ITU regulations
TTC interface

RS-422 level, UART

DC power
supply+18 V to +34 V, 22 W (typ.)

Physical characteristics
Dimensions
100 x 100 x 73 mm
Mass< 1,300 g

Data input interface
Parallel LVDS
Standard(CCSDS 130.12-G-1)
Clock input
Up to 100 MHz
Data input
8 bits + Data_valid
Data rate
Up to 800 Mbps
Data_request from
Flow control
transmitter
EnvironmentOperationaltemperature
Vibration
Shock
Radiation
tolerance
Designlifetime-40°C to +50°C

GSFC-STD-7000A,
Table 2.4-3
GSFC-STD-7000A,
Figure 2.4-1> 10 krad
5 years in LEO*1 MTX-OPT-DVBS2*2 MTX-OPT-DVBS2X

Ordering Information
MTX-540X-FM

Flight model

MTX-540X-EM

Engineering model

MTX-OPT-DATASOURCE

Option: Test data source unit and software (USB 3.0 to Parallel LVDS)

MTX-OPT-SR50M

Option: 50 Msymbol/s mode, (BW < 75 MHz, up to 269 Mbps)

MTX-OPT-DVBS2

Option: DVB-S2 mode, up to 32APSKMTX-OPT-DVBS2X

Option: DVB-S2X mode, up to 64APSK
Option: External band pass filter for SFCG recommendation(deep space)
Option: Patch antenna(Gain = 13.5 dBi, Size = 70 x 70 x 10 mm, Mass = 80 g)

MTX-OPT-BPF
MTX-OPT-PANT4

Caution
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For safe and correct usage, please read the "Operation
Manual" prior to the use of the products.
Specifications and designs are subject to change withoutnotice.
Specifications and designs are based on the standard model.
Please contact us regarding further customization to suit
your project’s needs.
This products may be subject to the application of theForeign Exchange and Foreign Trade Act and other related
laws and regulations in Japan. Customer agrees to comply
with such regulations and acknowledges that it is their
responsibility to obtain any required licenses to export, reexport, or import this products.
We shall not be liable for any damages arising out of or inconnection with the use of specifications herein, including
liability for lost profit, business interruption, or any otherdamages whatsoever.
The color of the product photography on catalog might bedifferent from that of actual product because of printing.

www.meisei.co.jp/english
E-mail: aerospace@meisei.co.jp
Headquarters:
2223 Naganumamachi, Isesaki-shi,
Gunma 372-8585, Japan
Tel: +81-270-32-1117 Fax: +81-270-32-0988
Aerospace & Defense Systems Div.

Tokyo Branch:
TOYOSU IHI BUILDING 10F, 1-1, Toyosu 3-chome,Koto-ku, Tokyo 135-8115, Japan
Tel: +81-3-6204-8252 Fax: +81-3-6204-8888
Sales & Marketing Dept.
Aerospace & Defense Systems Div.

MEISEI ELECTRIC CO., LTD.
MSPA4-048 M2007

The specifications in this catalog are current as of July 2020.