Field Name	Length (bits)		Bit		Contents	Description
	Item	Total	Algn	Off
commandEcho	176 + 16*n		32	0	telemetry Packet	Acknowledge receipt and disposition of a command packet (see table 63, swreq Rev. I)
header	64	64	32	0	telemetry Header	Telemetry Packet Header
synch	32	32	32	0	uint32 = 0x736f4166	This field delimits the start of a telemetry packet.
telemetryLength	10	10	1	32	uint10 = (11+n)/2	This field indicates the total number of 32-bit words in the telemetry packet
formatTag	6	6	1	42	uint6 = 7	This field identifies the content of the telemetry packet [see enum TlmFormatTag]: TTAG_CMD_ECHO
sequenceNumber	16	16	1	48	uint16	This field is the sequence number of the telemetry packet
arrival	32	32	32	64	uint32	BEP Timer Tick interrupt count at time of command arrival
result	32	32	32	96	uint32	Command execution result code [see enum CmdResult]
commandHeader	48	48	16	128	command Header	Copy of the command header that was executed
commandLength	16	16	16	128	uint16 = 3+n	Number of 16-bit words in the command packet
commandIdentifier	16	16	16	144	uint16	Used by ground to identify the command
commandOpcode	16	16	16	160	uint16	Command Operation code which determines format and action of the command [see enum CmdOpcode]
commandBody[2*pl-11]	16	16*n	16	176	uint16	Copy of the body of the command that was executed

Definition of variables

n	the dimension of the commandBody array [2*pl-11]
pl	the value of the telemetryLength field