Downlink (Shin-en2 -> Ground)
Japanese

Data Form of Downlink (Line A and C)

Frequency shift and symbol Code and Octal Number

Frequency shift	Symbol	Multiple (*f0)（×f₀）
441 [Hz]	Sync	1
882 [Hz]	0	2
1323 [Hz]	1	3
1764 [Hz]	2	4
2205 [Hz]	3	5

Code	Number	Code	Number
011	BOF	023	4
012	0	031	5
013	1	032	6
021	2	033	7
022	3

The code consists of three symbols.

Three codes constitute one byte + parity bit

MSB	Bit 6	Bit 5	Bit 4	Bit 3	Bit 2	Bit 1	LSB	Parity
1st Code			2nd Code			3rd Code

1st Code, 2nd Code and upper 2 bits on the 3rd Code are data.
The least significant bit of the 3rd Code is a parity bit.

Output example of code　（dt = 1 [sec]）

Audio output example of the code Begins with a synchronization code, BOF, CLASS,...continues

Telemetory Frame Frrmat of Downlink (Line A and C)

Frame Format 1 frame = 13 bytes

1	2	3	4	5	6	7	8	9	10	11
Sync1	Sync2	BOF + CLS	Data1	Data2	Data3	Data4	Data5	Data6	Data7	Data8

12	13
CRCH	CRCL

    Sync: Signal synchronization, BOF: upper 3 bits, Class(CLS): Data type (lower 5 bits), Data: Data, CRCH&CRCL: Cyclic code
    Synchronization 2 bytes(3*3*dt×2)，BOF+Class 1byte(3*3*dt*1)，Data 8 bytes(3*3*dt*8)，Cyclic code 2bytes(3*3*dt*2)
    Time for one frame transmission: 117 sec(117*dt，dt=1 sec)

Telemetry Frame Types

CLS	Data1	Data2	Data3	Data4	Data5	Data6	Data7	Data8
0x00	C-BT-V	C-BT-I	A-BS-V	ST.G.1	ST.G.2	A-BT-T	A-BU-T	ZPLS-T
0x01	A-BS-V	A-BS-I	C-BT-V	ST.G.1	ST.G.2	C-BT-T	A-BU-T	ZPLS-T
0x02	MSG-D1	MSG-D2	MSG-D3	MSG-D4	MSG-D5	MSG-D6	A-BT-T	A-BD-T
0x03	SA-A-I	SA-B-I	SA-C-I	SA-D-I	SA-E-I	SA-F-I	SA-G-I	ZMNS-T
0x04	C-RSSI	C-RX-I	C-NSQ	A-RSSI	A-RX-I	A-NSQ	C-TX-T	A-TX-T
0x05	C-PU-I	C-TX-I	NASA-I	A-TX-I	A-BS-I	NASA-T	-	-
0x10	NAS1-1	NAS1-2	NAS1-3	NAS1-4	NAS2-1	NAS2-2	NAS2-3	NAS2-4
0x11	NAS1-1	NAS1-2	NAS1-3	NAS1-4	NAS2-1	NAS2-2	NAS2-3	NAS2-4

    BAT: Battery unit, BATU: Upper-side of BAT, BATD: Down-side of BAT, BUS: Bus circuit, STR.G: Strain gauge, PCU: Power control unit
    ZPLUS: Z+Surface, ZMINU: Z-Surface, MSSG: Message, SAS: Solar Panels, RX: Receiver, TX: Transmitter, NASA: Radiation sensor,
    C-: C System, A-: A System, -V: Voltage, -I: Electric current, -T: Temperature, -RSSI: Reception signal intensity, Dn: n-th data

Transmission order of data

3 days after the launch:
I repeat the transmission of the data corresponding to the following Class every 48 minutes, both C and A system.

1	2	3	4	5	6	7	8	9	10	11	12
0x00	0x00	0x10	0x10	0x01	0x01	0x10	0x10	0x02	0x02	0x10	0x10
13	14	15	16	17	18	19	20	21	22	23	24
0x03	0x03	0x10	0x10	0x04	0x04	0x10	0x10	0x05	0x05	0x10	0x10

The 3rd and later from the launch :
(C system) I repeat the transmission of the data corresponding to the following Class every 48 minutes.

1	2	3	4	5	6	7	8	9	10	11	12
0x00	0x00	0x00	0x00	0x00	0x00	0x00	0x00	0x00	0x00	0x00	0x00
13	14	15	16	17	18	19	20	21	22	23	24
0x10	0x10	0x10	0x10	0x10	0x10	0x10	0x10	0x10	0x10	0x10	0x10

(A system) I repeat the transmission of the data corresponding to the following Class every 48 minutes.

1	2	3	4	5	6	7	8	9	10	11	12
0x01	0x01	0x01	0x01	0x01	0x01	0x01	0x01	0x01	0x01	0x01	0x01
13	14	15	16	17	18	19	20	21	22	23	24
0x02	0x02	0x02	0x02	0x02	0x02	0x02	0x02	0x02	0x02	0x02	0x02

Telemetory Format of Downlink (Line B)

Morse code
Short Point 1 seconds, Long Point 3 seconds, Break 1 second

Uplink (Ground -> Shin-en2 )
Japanese

Communication format of uplink (A system)

    Frequency transition 3 kHz or more
    Manchester code
    Data rate 10 bps (After Manchester encoding, 20 sps)

Communication frame configuration of uplink (A system)

Frame construction 1 frame = 13 bytes

1	2	3	4	5	6	7	8	9	10	11	12	13
0xFA	0XF3	0X20	VID	Command	Data1	Data2	Data3	Data4	Data5	Data6	CRCH	CRCL

    Vih.ID: ID of the spacecraft(Shin-en2 0x06), Command: Command number 0x02=Set of messages, Data1～Data6: Message
    CRCH: Cyclic code (upper), CRCL: Cyclic code (lower)
    Calculation of the cyclic code is performed by placing a 0 to CRCH and CRCL to from 4 byte 13 byte,
    I use CRC-16,CRC-CCITT (Generator polynomial x^16+x^12+x^5+1 (0x1021)).

    Command example: Set the message "HELLOW"

1	2	3	4	5	6	7	8	9	10	11	12	13
0xFA	0XF3	0X20	0x06	0x01	0x48	0x45	0x4C	0x4C	0x4f	0x57	CRCH	CRCL

Downlink (Shin-en2 -> Ground) Japanese