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TRIP Audio Packet Format
The TRIP audio is encapsulated in a UDP packet with the source and destination port
numbers set to the UDP Command Port+4. The UDP Packet only contains a 16 bit
counter and the actual audio to transmit data. The format of the data packet used for the
OMNI-VII are as follows for non-compressed TRIP:
Octet 0
Octet 1-129
3 Octets => 1 16bit audio
For compressed audio, the packet is of the same length, only difference is that each
byte contains a complete 8 bit audio. 1 Octet => 1 8bit audio. Meaning this is a total of
128 audio bytes. The packets will come out at ½ the rate of the non-compressed audio,
yielding a lower bandwidth requirement
Ethernet Command/Query Format
The Ethernet Command/Query format is basically the same as the Command/Query
protocol used on the Serial port. The main difference is that for the Etherent, there is also
a PassCode. The PassCode is 16 bits that precedes the standard Command/Query
protocol. The PassCode is checked by the OMNI-VII and if it is incorrect, then the packet
is ignored.
Format:
Where:
Example1:
Example2:
Rev 1.009
OMNI-VII Firmware Updates at www.rfsquared.com
Packet Counter
Packet Counter (=last+1)
Audio Data
Total of 64 audio words
<p1> <p0> 'standard command/query protocol'
<p1..p0> = PassCode
'standard command/query protocol' = as defined in section:
'The OMNI-VII Command Set '
<0x00> <0x04> *A<0x00><0xe4><0xe1><0xc0><CR> sets the
main VFO to 15,000,000 Hz or 15 MHz. Uses PassCode = 4
<0x07> <0xab> *B <0x00><0xe4><0xe1><0xc0><CR> sets the
sub VFO to 15,000,000 Hz or 15 MHz. Uses PassCode = 1963
OMNI-VII Programmer's Reference Guide
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