Read Harman Kardon SIGNATURE 2.0 (serv.man11) User Guide / Operation Manual online
SIGNATURE
B
US
P
ROTOCOL
M
ASTER
D
OCUMENT
Revised 2-24-98
Page 18 of 20
S
OFTWARE
R
EVISION
L
EVEL
R
EQUEST
C
OMMAND
:
R
ESPONSE
:
DB-25
DCE
DB-9
1
AA x
Protective Ground
2
TXD
3
BA I
Transmitted Data
3
RXD
2
BB O
Received Data
4
RTS
7
CA I
Request To Send
5
CTS
8
CB O
Clear To Send
6
DSR
6
CC O
Data Set Ready
Source
Device Type
Target
Device Type
Target
Unit ID
Source
Unit ID
Command
Modifier
Data
Length
Preamble
Byte
Command
Byte
Data
Byte(s)
Checksum
Byte
30h
20h
01h
01h
01h
Computed
7Eh
77h
None
See page 7
Source
Device Type
Target
Device Type
Target
Unit ID
Source
Unit ID
Command
Modifier
Data
Length
Preamble
Byte
Command
Byte
Data
Byte(s)
Checksum
Byte
20h
30h
01h
01h
02h
Computed
7Eh
77h
See below See page 7
The Software Revision Level Request command causes the target unit to transmit, in the
response, the revision level of its software. The response is a data word organized as
follows:
response, the revision level of its software. The response is a data word organized as
follows:
MSB Major revision level
LSB
LSB
Minor revision level
Example: 0205h would be software version 2.5
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