Marantz SR7400 User manual

SR7400/8400 : Rev00
Marantz
RS232C Control Specification
for
SR7400/8400
Category : AV. Receiver
Document Version : 1.00
Date : 11/22/2003
Number of Page : 17

RS232C Control Spec. Page: 2 / 17
SR7400/8400 Document Version [1.00]
Table of Contents
1. Introduction ............................................................................................................................................................ 3
1-1. Purpose ............................................................................................................................................................ 3
1-2. Scope................................................................................................................................................................ 3
1-3. Abbreviations ................................................................................................................................................... 3
1-4. References....................................................................................................................................................... 3
2. Global Description ................................................................................................................................................ 3
2-1. Overview........................................................................................................................................................... 3
2-2. Block Diagram.................................................................................................................................................. 3
2-3. Interface connecter specification of This Product .......................................................................................... 3
2-4. Assumptions and Dependencies.................................................................................................................... 3
3. Detailed Description.............................................................................................................................................. 4
3-1. Connection format ........................................................................................................................................... 4
3-1-1. Physical connection................................................................................................................................. 4
3-1-1-1. Data transmission sequence from Host to Slave .......................................................................... 4
3-1-1-2. Data transmission sequence from Slave to Host .......................................................................... 4
3-2. Transmission data format................................................................................................................................ 5
3-2-1. Transmission data format from Host to Slave........................................................................................ 5
3-2-1-1. Form1: Command ........................................................................................................................... 5
3-2-1-2. Form2: Status request..................................................................................................................... 5
3-2-2. Transmission data format from Slave to Host........................................................................................ 5
3-2-2-1. Form1: ACK/NAK ............................................................................................................................ 5
3-2-2-2. Form2: Status answer ..................................................................................................................... 5
3-3. The transaction sequences and the regulations............................................................................................ 6
3-3-1. The transaction sequences..................................................................................................................... 6
3-3-2. The transaction regulations..................................................................................................................... 6
3-3-3. Example of the transactions.................................................................................................................... 6
3-3-4. Examples of the handshaking flowchart ................................................................................................ 7
3-3-4-1. Example of successful handshaking.............................................................................................. 7
3-3-4-2. Example of error handshaking........................................................................................................ 7
3-4. Command list ................................................................................................................................................... 8
3-4-1. Normal Command list.............................................................................................................................. 8
3-5. Status request and Status answer list...........................................................................................................13
3-5-1. Normal Status request and Status answer list .....................................................................................13
4. Revision history................................................................................................................................................... 17

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SR7400/8400 Document Version [1.00]
1. Introduction
1-1. Purpose
This document was written in order to clarify specification for control this product by the host controller.
1-2. Scope
This document would be using by software or hardware engineers for production of this product.
This product is [marantz SR6400/SR5400]. (It’s refered to as “This product” after this.)
1-3. Abbreviations
Abbreviation Description
1-4. References
2. Global Description
2-1. Overview
A Host controller can control or watch out This product as a Slave very easily via the communication cable.
2-2. Block Diagram
2-3. Interface connecter specification of This Product
Processor Interface Signal name Connection device D-Sub Pin Connecter
- N.C. - 1
TxD (output) 2UAR
T
RxD (input)
RS232C Level shift driver
3
- N.C. 4
- GND 5
- N.C.
-
6
CTS (input) 7GENERAL POR
T
RTS (output)
RS232C Level shift driver
8
- N.C. - 9
RS232C
D-SUB
(9pin,male)
2-4. Assumptions and Dependencies
HOST
(Controller)
SLAVE
(This product)
RS232C cable (straight)
Connector
D-SUB (9pin, male)

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SR7400/8400 Document Version [1.00]
3. Detailed Description
The interface specification between This product and a Host controller is described below.
3-1. Connection format
3-1-1. Physical connection
Host (Controller) Slave (This product)
(Serialsetting<RS232Cbasic>)
Baud Rate : 9600bps
DataBits :8bit
Parity :None
Stopbit :1bit
Handshaking :(RTS/CTS)
3-1-1-1. Data transmission sequence from Host to Slave
Host (Controller) Slave (This product)
RTS → CTS
CTS ← RTS
TxD → RxD
RxD ← TxD
1. The host checks that CTS is High, then starts a data transmission from TxD.
2. The host performs the data transmission of the number of required bytes, and ends a transmission.
* The host can do RTS to Low during the transmission for disable data transmission from a slave.
3-1-1-2. Data transmission sequence from Slave to Host
Host (Controller) Slave (This product)
RTS → CTS
CTS ← RTS
TxD → RxD
RxD ← TxD
1. The slave checks that CTS is High, then starts a data transmission from TxD.
2. The slave performs the data transmission of the number of required bytes, and ends a transmission.
* The slave can do RTS to Low during the transmission for disable data transmission from a host.
RTS
CTS
TxD
RxD
GND
CTS
RTS
RxD
TxD
GND

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3-2. Transmission data format
3-2-1. Transmission data format from Host to Slave
There are two kinds of transmission data form from Host shown below.
3-2-1-1. Form1: Command
Command is a data that requests some status change.
Start character : ’@’
ID : ‘0’ ~ ‘9’ (A Slave has own ID, A Host has to set the ID.)
COMMAND : see “Command list”
End character : 0Dh
End
0Dh
COMMAND Start
‘@’
ID
3-2-1-2. Form2: Status request
Status request is a data that requests a answer of some status.
Start character : ’@’
ID : ‘0’ ~ ‘9’ (A Slave has own ID, A Host has to set the ID.)
Request character : ‘?’
Request status : see “Status request list”
End character : 0Dh
End
0Dh
Request status
Start
‘@’
‘?’
ID
3-2-2. Transmission data format from Slave to Host
There are two kinds of transmission data form from Slave shown below.
3-2-2-1. Form1: ACK/NAK
ACK is a reply data from Slave when Slave got an acceptable command data from Host.
ACK : 06h
NAK is a reply data from Slave when Slave got an incorrect Command data, Status request data or
some other data from Host.
NAK : 15h
3-2-2-2. Form2: Status answer
Status answers are reply data when Slave got an acceptable Request status data from Host.
Start character : ’@’
ID : ‘0’ ~ ‘9’ (A Slave will set own ID.)
Answer character : see “Status answer list”
End character : 0Dh
End
0Dh
Status answer Start
‘@’
ID
ACK
06h
NAK
15h

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3-3. The transaction sequences and the regulations
3-3-1. The transaction sequences
The transactions have two kinds of sequence.
*A transaction is a Command from Host then the Slave will be an answer by ACK or NAK.
*A transaction is a Status request from Host then the Slave will be an answer by Status answer.
3-3-2. The transaction regulations
The transactions have some kinds of regulation.
* A Command or a Status request transmission by the Host has to finish within one second.
* An answer (ACK, NAK or Status answer) transmittion by the Slave has to finish within one second
when got a Command or a Status request from the Host.
* The Host must not transmit an another Command or Status request until "it receives a answer by a
previous Command or Status request" or "it passes one second from a finishing of previous transmission
of a Command or a Status request ".
3-3-3. Example of the transactions
<Host> <Slave>
RTS CTS
CTS RTS
TxD RxD
RxD TxD
Example of the transactions
max. 1sec
Max. 1sec
a transaction a transaction
Command
ACK/NAK
Status request
Status answer
max. 1sec
max. 1sec

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3-3-4. Examples of the handshaking flowchart
3-3-4-1. Example of successful handshaking
SLAVEHOST
Com m and
acce
p
table
Request
acce
p
table
Com m and
ACK
Status
request
Status
answer
3-3-4-2. Example of error handshaking
SLAVEHOST
Com m and
in c o rre c t
Request
incorrect
Com m and
NAK
Status
request
NAK

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3-4. Command list
3-4-1. Normal Command list
(Samples indicated the ID set to as ‘1’.)
Command Character Sample
POWER ON AA "@1AA”,0x0D
POWER OFF AB "@1AB",0x0D
POWER
POWER(Toggle) AC "@1AC",0x0D
DSS CA "@1CA",0x0D
TV CB "@1CB",0x0D
DVD CD "@1CD",0x0D
VCR1 CE "@1CE",0x0D
AUX1 CG "@1CG",0x0D
AUX2 CH "@1CH”,0x0D
CD CJ "@1CJ",0x0D
TAPE CK "@1CK",0x0D
CD-R CL "@1CL",0x0D
FM CN "@1CN",0x0D
AM(MW) CO "@1CO”,0x0D
INPUT SELECT
TUNER CQ "@1CQ",0x0D
MULTI-CHANNEL INPUT ON CS "@1CS",0x0D
MULTI-CHANNEL MULTI-CHANNEL INPUT OFF CT "@1CT,0x0D
A/D DIG AUTO DA "@1DA",0x0D
A/D DIG FIX DB "@1DB",0x0D
INPUT SIGNAL
A/D ANA DC "@1DC",0x0D
VOLUME UP EA "@1EA",0x0D
VOLUME DOWN EB "@1EB",0x0D
VOLMUE UP FAST EC "@1EC",0x0D
VOLUME
VOLUME DOWN FAST ED "@1ED",0x0D
BASS UP FA "@1FA",0x0D
BASS DOWN FB "@1FB",0x0D
TREBLE UP FC "@1FC",0x0D
TONE
TREBLE DOWN FD "@1FD",0x0D
MUTE OFF GA "@1GA",0x0D
AUDIO MUTE MUTE ON GB "@1GB",0x0D
VIDEO MUTE OFF HA "@1HA",0x0D
VIDEO MUTE VIDEO MUTE ON HB "@1HB",0x0D
ATT OFF IA "@1IA",0x0D
ATT ATT ON IB "@1IB",0x0D
SPEAKER A OFF SPEAKER A OFF JA "@1JA",0x0D
SPEAKER A ON SPEAKER A ON JB "@1JB",0x0D
SPEAKER B OFF SPEAKER B OFF KA "@1KA",0x0D
SPEAKER B ON SPEAKER B ON KB "@1KB",0x0D
SLEEP OFF LA "@1LA",0x0D
SLEEP 10min LB "@1LB",0x0D
SLEEP 20min LC "@1LC",0x0D
SLEEP 30min LD "@1LD",0x0D
SLEEP 40min LE "@1LE",0x0D
SLEEP 50min LF "@1LF",0x0D
SLEEP 60min LG "@1LG",0x0D
SLEEP 70min LH "@1LH",0x0D
SLEEP 80min LI "@1LI”,0x0D
SLEEP MODE
SLEEP 90min LJ "@1LJ",0x0D
DISP DISP (Toggle) MA "@1MA",0x0D
OSD OFF NA "@1NA",0x0D
OSD OSD ON NB "@1NB",0x0D

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MENU OFF ZA "@1ZA",0x0D
MENU MENU (OK) ZB "@1ZB",0x0D
CURSOL UP ZC "@1ZC",0x0D
CURSOL DOWN ZD "@1ZD",0x0D
CURSOL LEFT ZE "@1ZE",0x0D
CURSOL
CURSOL RIGHT ZF "@1ZF",0x0D
FREQ. UP PB "@1PB",0x0D
FREQ. DOWN PC "@1PC",0x0D
AUTO UP START/STOP PD "@1PD",0x0D
TUNER FREQUENCY
AUTO DOWN START/STOP PE "@1PE",0x0D
PRESET INFO. QA "@1QA",0x0D
P-SCAN QB "@1QB",0x0D
PRESET UP QC "@1QC",0x0D
TUNER PRESET
PRESET DOWN QD "@1QD",0x0D
F-DIRECT OFF RA "@1RA",0x0D
F-DIRECT F-DIRECT ON RB "@1RB",0x0D
STEREO RC "@1RC",0x0D
TUNER MODE MONO RD "@1RD",0x0D
CLR RE "@1RE",0x0D
MEMO/CLR MEMO RF "@1RF",0x0D
DIRECT KEY 0 SA "@1SA",0x0D
DIRECT KEY 1 SB "@1SB",0X0D
DIRECT KEY 2 SC "@1SC",0x0D
DIRECT KEY 3 SD "@1SD",0x0D
DIRECT KEY 4 SE "@1SE",0x0D
DIRECT KEY 5 SF "@1SF",0x0D
DIRECT KEY 6 SG "@1SG",0x0D
DIRECT KEY 7 SH "@1SH”,0x0D
DIRECT KEY 8 SI "@1SI",0x0D
DIRECT KEY
DIRECT KEY 9 SJ "@1SJ",0x0D
RDS DISP MODE TA "@1TA",0x0D
RDS RDS PTY TB "@1TB",0x0D
AUTO U0 "@1U0",0x0D
DOLBY U6 "@1U6",0x0D
DD+PLⅡx MOVIE U7 "@1U7”,0x0D
DD+PLⅡx MUSIC U8 "@1U8”,0x0D
AAC+PLⅡx MOVIE U9 "@1U9”,0x0D
AAC+PLⅡx MUSIC UA "@1UA”,0x0D
DOLBY PLⅡx MOVIE UB "@1UB”,0x0D
DOLBY PLⅡx MUSIC UC "@1UC”,0x0D
DOLBY PLⅡx GAME UD "@1UD”,0x0D
DOLBY PLⅡMOVIE UE "@1UE”,0x0D
DOLBY PLⅡMUSIC UF "@1UF”,0x0D
DOLBY PLⅡGAME UG "@1UG”,0x0D
DOLBY PROLOGIC UH "@1UH",0x0D
EX/ES UI "@1UI",0x0D
VIRTUAL6.1 UJ "@1UJ",0x0D
DOLBY DIGITAL EX UK "@1UK",0x0D
DTS ES UL "@1UL",0x0D
NEO6 CINEMA UO "@1UO",0x0D
NEO6 MUSIC UP "@1UP",0x0D
Mch-STEREO UQ "@1UQ",0x0D
CSⅡCINEMA UR "@1UR",0x0D
CSⅡMUSIC US "@1US",0x0D
CSⅡMONO UT "@1UT",0x0D
SURROUND MODE
VIRTUAL Uc "@1Uc",0x0D

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STEREO Ud "@1Ud",0x0D
DTS-MODE UV "@1UV",0x0D
SRS-MODE UW "@1UW",0x0D
SOURCE DIRECT UX "@1UX",0x0D
SURR. MODE NEXT UY “@1UY”,0x0D
SURR. MODE PREV UZ “@1UZ”,0x0D
TEST TONE TEST TONE OFF VA "@1VA",0x0D
TEST TONE ON VB "@1VB",0x0D
NIGHT OFF WA "@1WA",0x0D
NIGHT NIGHT ON WB "@1WB",0x0D
RE-EQ ON XA "@1XA”,0x0D
RE-EQ (HT-EQ) RE-EQ OFF XB "@1XB,0x0D
MAIN+SUB YGA "@1YGA",0x0D
MAIN YGB "@1YGB",0x0D
BILINGUAL
SUB YGC "@1YGC",0x0D
DC TRG ON YJA "@1YJA",0x0D
REMOTE DC TREGGER DC TRG OFF YJB "@1YJB",0x0D

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SR7400/8400 Document Version [1.00]
Multi Room control commands as from MULTI ROOM
Command Character Sample
MULTI ROOM OFF aA "@1aA",0x0D
MULTI ROOM MULTI ROOM ON aB "@1aB”,0x0D
DSS cA "@1cA",0x0D
TV cB "@1cB",0x0D
DVD cD "@1cD",0x0D
VCR1 cE "@1cE",0x0D
AUX1 cG "@1cG",0x0D
AUX2 cH "@1cH",0x0D
CD cJ "@1cJ",0x0D
TAPE cK "@1cK",0x0D
CD-R cL "@1cL",0x0D
FM cN "@1cN",0x0D
AM(MW) cO "@1cO”,0x0D
INPUT SELECT
TUNER cQ "@1cQ",0x0D
INPUT SIGNAL A/D(Toggle) dD "@1dD",0x0D
MULTI VOL. UP eA "@1eA",0x0D
MULTI ROOM VOLUME MULTI VOL. DOWN eB "@1eB",0x0D
MULTI VOL. VARIABLE fA "@1fA",0x0DMULTI ROOM
VOLUME MODE MULTI VOL. FIXED fB "@1fB",0x0D
MULTI ROOM SPEAKER OFF ja "@1ja",0x0D
MULTI SPEAKER MULTI ROOM SPEAKER ON jb "@1jb",0x0D
MULTI ROOM SPEAKER MUTEOFF ga "@1ga",0x0D
MULTI SPEAKER MUTE MULTI ROOM SPEAKER MUTE ON gb "@1gb",0x0D
MULTI SPK. UP hA "@1hA",0x0DMULTI ROOM SPEAKER
VOLUME MULTI SPK. DOWN hB "@1hB",0x0D
MULTI SPK. VARIABLE kA "@1kA",0x0DMULTI ROOM SPEAKER
VOLUME MODE MULTI SPK. FIXED kB "@1kB",0x0D
MULTI ROOM MUTE OFF gA "@1gA",0x0D
MULTI ROOM MUTE MULTI ROOM MUTE ON gB "@1gB",0x0D
MR SLEEP OFF lA "@1lA",0x0D
MR SLEEP 10min lB "@1lB",0x0D
MR SLEEP 20min lC "@1lC",0x0D
MR SLEEP 30min lD "@1lD",0x0D
MR SLEEP 40min lE "@1lE",0x0D
MR SLEEP 50min lF "@1lF",0x0D
MR SLEEP 60min lG "@1lG”,0x0D
MR SLEEP 70min lH "@1lH",0x0D
MR SLEEP 80min lI "@1lI",0x0D
MULTI SLEEP MODE
MR SLEEP 90min lJ "@1lJ",0x0D
MULTI ROOM OSD OFF nA "@1nA",0x0D
MULTI ROOM OSD MULTI ROOM OSD ON nB "@1nB",0x0D

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SR7400/8400 Document Version [1.00]
Multi Room control commands as from MULTI ROOM
Command Character Sample
FREQ. UP pB "@1pB",0x0D
FREQ. DOWN pC "@1pC",0x0D
AUTO UP START/STOP pD "@1pD",0x0D
TUNER FREQUENCY
AUTO DOWN START/STOP pE "@1pE”,0x0D
P-SCAN qB "@1qB",0x0D
PRESET UP qC "@1qC",0x0D
TUNER PRESET
PRESET DOWN qD "@1qD",0x0D
F-DIRECT OFF rA "@1rA",0x0D
F-DIRECT F-DIRECT ON rB "@1rB",0x0D
STEREO rC "@1rC",0x0D
T-MODE MONO rD "@1rD",0x0D
DIRECT KEY 0 sA "@1sA",0x0D
DIRECT KEY 1 sB "@1sB",0X0D
DIRECT KEY 2 sC "@1sC",0x0D
DIRECT KEY 3 sD "@1sD",0x0D
DIRECT KEY 4 sE "@1sE",0x0D
DIRECT KEY 5 sF "@1sF",0x0D
DIRECT KEY 6 sG "@1sG",0x0D
DIRECT KEY 7 sH "@1sH”,0x0D
DIRECT KEY 8 sI "@1sI",0x0D
DIRECT KEY
DIRECT KEY 9 sJ "@1sJ",0x0D
DSS ca "@1cA",0x0D
TV cb "@1cB",0x0D
DVD cd "@1cD",0x0D
VCR1 ce "@1cE",0x0D
AUX1 cg "@1cG",0x0D
AUX2 ch "@1cH",0x0D
CD cj "@1cJ",0x0D
TAPE ck "@1cK",0x0D
CD-R cl "@1cL",0x0D
FM cn "@1cN",0x0D
AM(MW) co "@1cO”,0x0D
INPUT SELECT(M-SPKR)
TUNER cq "@1cQ",0x0D

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3-5. Status request and Status answer list
3-5-1. Normal Status request and Status answer list
(Samples indicated the ID set to as ‘1’.)
Request Status Char. & Sample Status answer Char. & Sample
POWER ON AA (“@1AA”,0x0D)
POWER Status ‘A’ (“@1?A”,0x0D) POWER OFF AB
DSS BA
TV BB
DVD BD
VCR1 BE
VIDEO INPUT ‘B’ (“@1?B”,0x0D)
AUX1 BG
DSS CA
TV CB
DVD CD
VCR1 CE
AUX1 CG
AUX2 CH
CD CJ
TAPE CK
CD-R CL
FM CN
AM(MW) CO
TUNER CQ
AUDIO INPUT ‘C’ (“@1?C”,0x0D)
MULTI-CHANNEL INPUT ON CR
A/D DIG AUTO DA
A/D DIG FIX DB
INPUT MODE ‘D’ (“@1?D”,0x0D)
A/D ANA DC
VOL.= XXXdB
(XXX = -90～+99)
EAXXX
(“@1EA-15”,0x0D)
max EB
VOLUME Status ‘E’ (“@1?E”,0x0D)
min （-∞） EC
BASS Status ‘FA’ (“@1?FA”,0x0D) BASS:xxdB(xx=-9～+9) FAxx
TREBLE Status ‘FC’ (“@1?FC”,0x0D) TREBLE:xxdB(xx=-9～+9) FCxx
AUDIO MUTE OFF GA
AUDIO MUTE ‘G’(“@1?G”,0x0D) AUDIO MUTE ON GB
VIDEO MUTE OFF HA
VIDEO MUTE ‘H’ (“@1?H”,0x0D) VIDEO MUTE ON HB
ATT OFF IA
ATT Status ‘I’ (“@1?I”,0x0D) ATT ON IB
SPEAKER A OFF JA
SPEAKER A ‘J’ (“@1?J”,0x0D) SPEAKER A ON JB
SPEAKER B OFF KA
SPEAKER B ‘K’ (“@1?K”,0x0D) SPEAKER B ON KB
SLEEP OFF LA
SLEEP MODE ‘L’ (“@1?L”,0x0D) SLEEP ON : XXX (001-120) LBXXX
DISP ON(INPUT) MA
DISP ON(SURR) MB
AUTO DISPLAY OFF MC
DISPLAY Status ‘M’ (“@1?M”,0x0D)
DISP OFF MD
OSD OFF NA
OSD Status ‘N’ (“@1?N”,0x0D) OSD ON NB
MENU OFF OA
MENU ‘O’ (“@1?Z”,0x0D)
MENU ON OB

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SR7400/8400 Document Version [1.00]
TUNER FREQUENCY
PAxxxx:(Not tuned+Freq.)
PBxxxx:(Tuned+Freq.)
(FM: 87.55 = “8755”)
(FM:108.00 = “0800”)
(MW: 520=”0520”)
(LW:282=”0282”)
Frequency Scaning PC (“@1PC”,0x0D)
TUNER FFREQUENCY
‘P’ (“@1?P”,0x0D)
FM:076.00-108.00
AM,MW:520-1710
LW:152-282 Not available P- (“@1P-“,0x0D)
Preset No. (XX=01～50)
Not Preset mode (XX=00)
QAXX or QBXX
(A=!tuned, B=tuned)
TUNER PRESET ‘Q’ (“@1?Q”,0x0D)
Not available Q- (“@1Q-“,0x0D)
F-DIRECT OFF RA* (“@1TAC”,0x0D)
F-DIRECT ON RB*
Not available R-*
AUTO STEREO R*C
MONO R*D
F-DIRECT
TUNER MODE
‘R’ (“@1?R”,0x0D)
(answer)
R[D-DIR][T-MODE]
Not available R*-
AUTO U0 (“@1U0”,0x0D)
DOLBY U6
DD+PLⅡx MOVIE U7
DD+PLⅡx MUSIC U8
AAC+PLⅡx MOVIE U9
AAC+PLⅡx MUSIC UA
DOLBY PLⅡx MOVIE UB
DOLBY PLⅡx MUSIC UC
DOLBY PLⅡx GAME UD
DOLBY PLⅡMOVIE UE
DOLBY PLⅡMUSIC UF
DOLBY PLⅡGAME UG
DOLBY PROLOGIC UH
EX/ES UI
VIRTUAL6.1 UJ
DOLBY DIGITAL EX UK
DTS ES UL
DTS CINEMA(DTS) UM
NEO6 CINEMA UO
NEO6 MUSIC UP
Mch-STEREO UQ
CSⅡCINEMA UR
CSⅡMUSIC US
CSⅡMONO UT
VIRTUAL Uc
STEREO Ud
SURROUND MODE ‘U’ (“@1?U”,0x0D)
S-DIRECT UX
TEST TONE OFF V*A (“@1VBA”,0x0D)
TEST TONE L V*B * = T-MODE
TEST TONE C V*C A = AUTO
TEST TONE R V*D B = MANUAL
TEST TONE SR V*E
TEST TONE SBR V*F
TEST TONE SBL V*G
TEST TONE SL V*H
TEST TONE Status
(with T-TONE MDOE) ‘V’ (“@1?V”,0x0D)
TEST TONE SW V*I
NIGHT MODE OFF WA
NIGHT MODE ‘W’ (“@1?W”,0x0D) NIGHT MODE ON WB
RE-EQ OFF XA
RE-EQ (HT-EQ) ‘X’ (“@1?X”,0x0D) RE-EQ ON XB

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D DIGITAL(AC-3) uA
DD SURROUND uB
DD SURR EX uC
DTS uD
DTS ES DISCREATE uE
DTS ES MATRIX uF
AAC uG
PCM uJ
HDCD uK
OTHER uM
SIGNAL FORMAT ‘u’ (“@1?u”,0x0D)
NONE_DETECTION uN
32K vA
44.1K vB
48K vC
88.2K vD
96K vE
OUT OF RANGE vH
SAMPLING FREQ. ‘v’ (“@1?v”,0x0D)
Not available v-
See below wA$%
CHANNEL STATUS ‘w’ (“@1?w”,0x0D) Not available w-
* Description of CHANNEL STATUS answer character. (about : $%)
(Character $ and % would be ‘0’ to ‘9’ or ‘A’ to ‘F’,it uses to as hex. bit data.)
| $bit | %bit |
Bit 3 2 1 0 3 2 1 0
When a bit of channel status is effective, it sets to 1.
And when it is opposite condition, it sets to 0.
ex.)
* If front L and R channel status are only effective, it will send “@1w146”,0Dh.
* If front and surr. L/R channel status are effective, it will send “@1w1B6”,0Dh.
* If all channel status are effective, it will send “@1w1FF”,0Dh.
* If all channel status are not effective, it will send “@1w180”,0Dh.
L : ‘YB’
C : ‘YC’
R : ‘YD’
SR : ‘YE’
SBR : ‘YF’
SBL : ‘YG’
SL : ‘YH’
SW : ‘YI’
CHANNEL LEVEL ‘Y’ (“@1?Y*”,0x0D)
Not available
(“@1YB**”*,0x0D)
*** = +/-?(? = 00~99)
(“@1YB --“,0x0D)
= Not available
“xA” ("@1?xA", 0x0D) LEFT DISTANCE xAXX (“@1xA10”0x0D)
“xB” ("@1?xB”, 0x0D) RIGHT DISTANCE xBXX
“xC” ("@1?xC", 0x0D) CENTER DISTANCE xCXX
“xD” ("@1?xD", 0x0D) SUBWF DISTANCE xDXX
“xE” ("@1?xE", 0x0D) SURR. L DISTANCE xEXX
“xF” ("@1?xF", 0x0D) SURR. R DISTANCE xFXX
“xG” ("@1?xG", 0x0D) BACK L DISTANCE xGXX
SPEAKER DISTANCE
[
XX: (00～30)
(1 foot = “01”)
(10 feet=”10”)
]
“xH” ("@1?xH", 0x0D) BACK R DISTANCE xHXX
L C R
LFE
SL SR
S
1LFE SL SR S L R C

RS232C Control Spec. Page: 16 / 17
SR7400/8400 Document Version [1.00]
FRONT LAGE yAA
“yA” ("@1?yA", 0x0D) FRONT SMALL yAB
CENTER LAGE yBA
CENTER SMALL yBB
“yB” ("@1?yB", 0x0D)
CENTER OFF yBC
SUBWF ON yCA
“yC” ("@1?yC", 0x0D) SUBWF OFF yCB
SURR. LAGE yDA
SURR. SMALL yDB
“yD” ("@1?yD", 0x0D)
SURR. OFF yDC
BACK LAGE yEA
BACK SMALL yEB
SPEAKER SIZE
“yE” ("@1?yE", 0x0D)
BACK OFF yEC
BACK 1ch yFA
BACK 2ch yFB
SPEAKER BACK ‘yF’ ("@1?yF", 0x0D)
BACK NONE yFC
MAIN+SUB yGA
MAIN yGB
BILINGUAL ‘yG’ ("@1?yG",0x0D)
SUB yGC
DC TRG ON yJA
REMOTE DC TRIGGER ‘yJ’ ("@1?yJ",0x0D) DC TRG OFF yJB
MULTI ROOM OFF a0 (“@1a0”,0x0D)
MULTI ROOM ON a1 (“@1a1”,0x0D)
MULTIROOM Status ‘a’ (“@1?a”,0x0D)
Not available a- (“@1a-”,0x0D)
DSS bA
TV bB
DVD bD
VCR1 bE
AUX1 bG
VIDEO INPUT
(Multi Room) ‘b’ (“@1?b”,0x0D)
Not available b-
DSS cA
TV cB
DVD cD
VCR1 cE
AUX1 cG
AUX2 cH
CD cJ
TAPE cK
CD-R cL
FM cN
AM(MW) cO
TUNER cQ
AUDIO INPUT
(Multi Room) ‘c’ (“@1?c”,0x0D)
Not available c-
VOL .XXX(-90～+99) eAXXX
MAX. eB
VOLUME Status
(Multi Room) ‘e’ (“@1?e”,0x0D)
MIN.(-∞) eC
VARIABLE fAVOLUME SET Status
(Multi Room) ‘f’ (“@1?f”,0x0D) FIXED fB
MUTE OFF (MR) gA
MUTE Status
(Multi Room) ‘g’ (“@1?g”,0x0D) MUTE ON (MR) gB
MULTI SPEAKER OFF jA
SPEAKER Status
(Multi Room) ‘j’ (“@1?j”,0x0D) MULTI SPEAKER ON jB
VOL .XXX(-90～+99) hAXXX
MAX. hB
VOLUME Mode Status
(Multi Room SPK) ‘h’(“@1?h”,0X0D)
MIN.(-∞) hC
MULTI SPK VARIABLE kA
VOLUME Status
(Multi Room SPK) ‘k’ (“@1?k”,0x0D) MULTI SPK FIXED kB
SLEEP OFF lA
SLEEP TIMER Status
(Multi Room) ‘l’ (“@1?l”,0x0D) SLEEP XXX(1～120) lBXXX

RS232C Control Spec. Page: 17 / 17
SR7400/8400 Document Version [1.00]
MULTI OSD OFF zAOSD Status
(Multi Room) ‘z’ (“@1?z”,0x0D) MULTI OSD ON zB
TUNER FREQUENCY
XXXX=076.00-108.00(FM)
=520-1710(AM,MW)
= 152-282(LW)
pAXXXX or pBXXXX
(FM:87.50 = “8750”)
(FM:108.00=”0800”)
(MW: 520=”0520”)
(MW:1710=”1710”)
TUNER FREQUENCY
(Multi Room) ‘p’ (“@1?p”,0x0D)
Not available p- (“@1p-“,0x0D)
Preset No. (XX=01～50)
Not Preset mode (XX=00)
qAXX or qBXX
(A=!tuned, B=tuned)
TUNER PRESET
(Multi Room) ‘q’ (“@1?q”,0x0D)
Not available q- (“@1q-“,0x0D)
4. Revision history
Rev. Date Owner Change description
00 11/20/03 MAI Released