></TR>
<TR><TD>Positive Achnowledgement</TD><TD>ACK</TD><TD> 0x06</TD></TR>
<TR><TD>Unable to Execute Command</TD><TD>DC1</TD><TD> 0x11</TD></TR>
<TR><TD>Negative Acknowledgement,<BR>also Camera Signature</TD><TD>NAK</TD><TD> 0x15</TD></TR>
<TR><TD>Packet</TD><TD COLSPAN=2>Variable length sequence of bytes</TD></TR>
<TR><TD>Termination Byte</TD><TD><BR></TD><TD> 0xff</TD></TR>
</TABLE>

<H3>Packet structure</H3>

The packet has the following structure:

<TABLE BORDER=1>
<TR><TH>Offset</TH><TH>L