Data Receiver
Data Sender
Operation
(External Device)
(This Instrument)
SBS(HBR)
----->
Session Start Request
<-----
ACK
Acknowledge
HBR
----->
Send Request
(Optional)
<-----
HBS
Send Packet
ACK
----->
Acknowledge
<-???-
HBS
Send Packet (Note1)
ERR(Format Error)
----->
Format Error
<-----
HBS
Resend Packet
ACK
-???->
Acknowledge
<-----
ERR(Format Error)
Format Error
ACK
-???->
Acknowledge
<-----
ERR(Format Error)
2 consecutive format
errors(*Note2)
ACK
----->
Acknowledge
<-----
HBS
Send Packet
:
Note1
:
“
<-???-
” or “
-???->
” indicates transfer failed.
Note2
:
Number of retries that exceeds the retries stipulated by Handshake Max Retry explained under “20.2 System
Exclusive Protocol Parameter”.
18.3.11
Example: Session Generating a CRC Error
Data Receiver
Data Sender
Operation
(External Device)
(This Instrument)
SBS(HBR)
----->
Session Start Request
<-----
ACK
Acknowledge
HBR
----->
Send Request
(Optional)
<-----
HBS
Send Packet
ACK
----->
Acknowledge
<-???-
HBS
Send Packet
ERR(CRC Error)
----->
CRC error
<-???-
HBS
Resend Packet
ERR(CRC Error)
----->
2 consecutive CRC
errors(*Note)
<-----
HBS
Resend Packet
ACK
----->
Acknowledge
<-----
HBS
Send Packet
:
59