Arcam SA20 Quick start guide

Custom Installation Notes
IP/Serial programming interface and
IR remote control commands for the
SA10/SA20 integrated amplifier
INTEGRATED AMPLIFIER
POWERSATCDBDAVPVRSTBMUTE AUX PHONOAUX
PHONES

2
Applicability
This document applies to the Arcam SA10/SA20 integrated amplifiers.
Revision history
Issue A.0: Initial revision
Issue B.0: Correction to 0x58
Controlling via RS232/NET ............................................3
Introduction ................................................................................... 3
Set-up................................................................................................ 3
Conventions ................................................................................... 3
Serial cable specification........................................................... 3
Data transfer format.................................................................... 3
Command and response formats.......................................... 3
AMX Duet™ support.................................................................... 4
System Command Specifications ...............................5
Power (0x00)................................................................................... 5
Display brightness (0x01).......................................................... 5
Headphones (0x02)..................................................................... 6
Software version (0x04)............................................................. 6
Factory reset (0x05)..................................................................... 7
Simulate RC5 IR command (0x08)......................................... 7
Volume (0x0D)............................................................................... 8
Mute/unmute (0x0E)................................................................... 8
Current input source (0x1D) .................................................... 9
Headphone override (0x1F)..................................................... 9
Heartbeat (0x25).........................................................................10
Reboot (0x26) ..............................................................................10
Balance (0x3B) .............................................................................11
Incoming audio sample rate (0x44)....................................11
DC offset (0x51)...........................................................................12
Short circuit status (0x52) (SA20 only)...............................12
Friendly name (0x53)................................................................13
IP address (0x54).........................................................................13
Timeout counter (0x55)...........................................................14
Lifter temperature (0x56) (SA20 Only)...............................14
Output temperature (0x57)....................................................15
Auto shutdown control (0x58)..............................................15
Input detect (0x5A)....................................................................16
Processor mode input (0x5B) ................................................16
Processor mode volume (0x5C) ...........................................17
System status (0x5D).................................................................17
System model (0x5E) ................................................................18
DAC Filter (0x61).........................................................................18
RC5 Command Codes ...................................................19
Basic Functions............................................................................19
Advanced Functions .................................................................19
Contents

3
Introduction
This document describes the remote control protocol for controlling via the RS232/NET interface.
Set-up
IP control is via port 50000 of the IP address of the unit.
Conventions
All hexadecimal numbers begin 0x.
Any character in single quotes gives the ASCII equivalent of a hex value.
<n> represents an unknown or variable number.
Serial cable specification
15
6 9
15
6 9
DB9 Female
DB9 Female
The cable is wired as a null modem:
Connector 1 pin Connector 2 pin Function
2 3 Rx Tx
3 2 Tx Rx
5 5 RS232 Ground
Data transfer format
Transfer rate: 38,400bps
Data format: 8 data bits, 1 stop bit, no parity, no flow control.
Command and response formats
Communication between the remote controller (RC) and the SA10/SA20 takes the form of sequences of bytes, with all commands and responses having the
same basic format. The SA10/SA20 shall always respond to a received command, but may also send messages at other times.
Each transmission by the RC hs the following format:
<St> <Zn> <Cc> <Dl> <Data> <Et>
• St (Start transmission): 0x21 ‘!’
• Zn (Zone number): see below
• Cc (Command code): the code for the command
• Dl (Data length): the number of data items following this item, excluding the Et
• Data: the parameters for the command
• Et (End transmission): 0x0D
Each response by the SA10/SA20 has the following format:
<St> <Zn> <Cc> <Ac> <Dl> <Data> <Et>
• St (Start transmission): 0x21 ‘!’
• Zn (Zone number): see“Zone numbers”, below
• Cc (Command code): the code for the command
• Ac (Answer code): see “Answer codes”, below
• Dl (Data Length): the number of data items following this item, excluding the Et
• Data: the parameters for the response of length n (note that n is limited to 255)
• Et (End transmission): 0x0D
The SA10/SA20 responds to each command from the RC within three seconds. The RC may send further commands before a previous command response has
been received.
Zone numbers
The following zone numbers are defined:
• 0x01 – Zone number 1. (Zone 1 is the master zone. Commands that appear zone-less refer to the master zone)
• 0x02 – Zone number 2
Controlling via RS232/NET

4
Answer codes
The following answer codes are defined:
• 0x00 – Status update.
• 0x82 – Zone Invalid.
• 0x83 – Command not recognised.
• 0x84 – Parameter not recognised.
• 0x85 – Command invalid at this time (see NOTE below)
• 0x86 – Invalid data length.
NOTE: Certain commands cannot be processed when the Setup Menu is being displayed. An answer code of 0x85 will be returned in these circumstances. Also,
commands for tuner control cannot be processed when the tuner input is not selected, etc.
State changes as a result of other inputs
It is possible that the state of the SA10/SA20 may be changed as a result of user input via front panel or remote. Any change resulting from these inputs is
relayed to the RC using the appropriate message type.
Reserved Commands
Commands 0xF0 to 0xFF (inclusive) are reserved for test functions and should never be used.
Example command and response sequence
As an example, the command to simulate the RC5 command “16-16” (increase volume):
St Zn Cc Dl Data 1 Data 2 Et
0x21 0x01 0x08 0x02 0x10 0x10 0x0D
Assuming that the command was accepted by the SA10/SA20 and is being processed, the SA10/SA20 responds to this command with the following sequence:
St Zn Cc Ac Dl Data 1 Data 2 Et
0x21 0x01 0x08 0x00 0x02 0x10 0x10 0x0D
AMX Duet™ support
The SA10/SA20 shall be fully compatible with AMX Duet™ Dynamic Device Discovery Protocol (DDDP). The following description of Dynamic Device Discovery
comes from the AMX website (www.amx.com). Dynamic Device Discovery is part of AMX’s Duet™ platform, which combines the proven reliability and power of
NetLinx® with the extensive capabilities of the Java 2 Micro Edition (J2ME) platform. When integrating a serial or IP device from a manufacturer embedding the
Dynamic Device Discovery Protocol (DDDP), Duet recognizes the device and loads the appropriate Duet module, which automatically installs the new device.
AMX’s NetLinx Master can then find and install the Duet device module either from a library on the master, from AMX’s web site, or from the manufacturer’s web
site. Duet also allows for device swapping so that programming changes are not required when devices with DDDP are removed or replaced – a huge benefit
for end users. The Duet platform is an extension AMX’s InConcert® manufacturer partner program, which was developed to ensure seamless communication
between partners’ devices and the AMX control system.
Data is specified in the ASCII format. All ASCII characters between the quotes“” should be recognised/transmitted.“\r” is a carriage return (0x0D).
Command: “AMX\r”
Response: “AMXB<Device-SDKClass=Amplifier><Device-Make=ARCAM><Device-Model=SA10><Device-Revision=x.y.z>\r”
Response: “AMXB<Device-SDKClass=Amplifier><Device-Make=ARCAM><Device-Model=SA20><Device-Revision=x.y.z>\r”
Where,
x.y.z = RS232 protocol version number.

5
COMMAND:
Byte: Description:
St 0x21
Zn Zone number
Cc 0x01
Dl 0x01
Data 0x00 – Set brightness to off
0x01 – Set brightness to dim
0x02 – Set brightness to full
0xF0 – Request display brightness
Et 0x0D
RESPONSE:
Byte: Description:
St 0x21
Zn Zone number
Cc 0x01
Ac Answer code
Dl 0x01
Data 0x00 – Display brightness is off
0x01 – Display brightness is dim
0x02 – Display brightness is full
Et 0x0D
COMMAND:
Byte: Description:
St 0x21
Zn Zone number
Cc 0x00
Dl 0x01
Data 0x00 – Power off
0x01 – Power on
0x02 – Power toggle
0xF0 – Request power state
Et 0x0D
RESPONSE:
Byte: Description:
St 0x21
Zn Zone number
Cc 0x00
Ac Answer code
Dl 0x01
Data 0x00 – Zone is in standby
0x01 – Zone is powered on
Et 0x0D
System Command Specifications
Display brightness (0x01)
Set/request the brightness of the front panel display.
Example
Command/response sequence for requesting the brightness of the display
where the display is off:
Command: 0x21 0x01 0x01 0x01 0xF0 0x0D
Response: 0x21 0x01 0x01 0x00 0x01 0x00 0x0D
Power (0x00)
Set/request the stand-by state of a zone.
Example
Command/response sequence to request the power state of the unit where
the unit has power on:
Command: 0x21 0x01 0x00 0x01 0xF0 0x0D
Response: 0x21 0x01 0x00 0x00 0x01 0x01 0x0D

6
COMMAND:
Byte: Description:
St 0x21
Zn Zone number
Cc 0x04
Dl 0x01
Data 0xF0 – request software version
Et 0x0D
RESPONSE:
Byte: Description:
St 0x21
Zn Zone number
Cc 0x04
Ac Answer code
Dl 0x02
Data1 0x?? – major version number
Data2 0x?? – minor version number
Et 0x0D
Software version (0x04)
Request the firmware version
Example
Command/response sequence, where the repsonse is HOST version 1.2:
Command: 0x21 0x01 0x04 0x01 0xF0 0x0D
Response: 0x21 0x01 0x04 0x00 0x02 0x01 0x02 0x0D
COMMAND:
Byte: Description:
St 0x21
Zn Zone number
Cc 0x02
Dl 0x01
Data 0xF0 – Request current headphone connection status
Et 0x0D
RESPONSE:
Byte: Description:
St 0x21
Zn Zone number
Cc 0x02
Ac Answer code
Dl 0x01 (Data length)
Data 0x00 – Headphones are not connected.
0x01 – Headphones are connected
Et 0x0D
Headphones (0x02)
Determine whether headphones are connected.
Example
Command/response sequence to request the headphone status where the
headphones are not connected:
Command: 0x21 0x01 0x02 0x01 0xF0 0x0D
Response: 0x21 0x01 0x02 0x00 0x01 0x00 0x0D

7
COMMAND:
Byte: Description:
St 0x21
Zn Zone number
Cc 0x05
Dl 0x02
Data1 0xAA (Confirmation data pattern to avoid accidental restore)
Data2 0xAA (Confirmation data pattern to avoid accidental restore)
Et 0x0D
RESPONSE:
Byte: Description:
St 0x21
Zn Zone number
Cc 0x05
Ac Answer code
Dl 0x00
Et 0x0D
Factory reset (0x05)
This command resets the unit to factory defaults.
Example
Command/response sequence for resetting the unit to factory defaults:
Command: 0x21 0x01 0x05 0x02 0xAA 0xAA 0x0D
Response: 0x21 0x01 0x05 0x00 0x00 0x0D
Simulate RC5 IR command (0x08)
Simulate an RC5 command via the RS232 port. An additional status message
will be sent in most cases as a result of the IR command.
Example
Command/response sequence to RC5 16-17 (volume down):
Command: 0x21 0x01 0x08 0x02 0x10 0x11 0x0D
Response: 0x21 0x01 0x08 0x00 0x02 0x10 0x11 0x0D
COMMAND:
Byte: Description:
St 0x21
Zn Zone number
Cc 0x08
Dl 0x02
Data1 RC5 System code
Data2 RC5 Command code
Et 0x0D
RESPONSE:
Byte: Description:
St 0x21
Zn Zone number
Cc 0x08
Ac Answer code
Dl 0x02
Data1 RC5 System code
Data2 RC5 Command code
Et 0x0D

8
COMMAND:
Byte: Description:
St 0x21
Zn Zone number
Cc 0x0E
Dl 0x01
Data 0x00 – Mute
0x01 – Unmute
0x02 – Mute toggle
0xF0 – Request mute status
Et 0x0D
RESPONSE:
Byte: Description:
St 0x21
Zn Zone number
Cc 0x0E
Ac Answer code
Dl 0x01
Data 0x00 – Muted
0x01 – Unmuted
Et 0x0D
Mute/unmute (0x0E)
Set/Request the mute status of the output.
Example
Command/response sequence for requesting the mute status of output
where the result is unmuted:
Command: 0x21 0x01 0x0E 0x01 0xF0 0x0D
Response: 0x21 0x01 0x0E 0x00 0x01 0x02 0x0D
Volume (0x0D)
Set or request the volume of a zone.
This command returns the volume even if the zone requested is in mute.
The “Request Mute status” command can be used to discover if the zone is
muted.
Response data format:
e.g. for volume 45dB: Data=0x2D (45)
Example
Command/response sequence for setting the volume in Zone 1 to 45dB:
Command: 0x21 0x01 0x0D 0x01 0x2D 0x0D
Response: 0x21 0x01 0x0D 0x00 0x01 0x2D 0x0D
COMMAND:
Byte: Description:
St 0x21
Zn Zone number
Cc 0x0D
Dl 0x01
Data 0x00 (0) – 0x63 (99) – Set the volume
0xF0 – Request the current volume
0xF1 – Increment volume by 1 step
0xF2 – Decrement volume by 1 step
Et 0x0D
RESPONSE:
Byte: Description:
St 0x21
Zn Zone number
Cc 0x0D
Ac Answer code
Dl 0x01
Data Zone volume, integer value:
0x00 (0) – 0x63 (99)
Et 0x0D

9
Headphone override (0x1F)
Activate/deactivate the mute relays (does not zero the volume).
Example
Command/response sequence to activate the mute relays:
Command: 0x21 0x01 0x1F 0x01 0x01 0x0D
Response: 0x21 0x01 0x1F 0x00 0x01 0x01 0x0D
COMMAND:
Byte: Description:
St 0x21
Zn Zone number
Cc 0x1F
Dl 0x01
Data 0x00 – Headphone/Over-ride Clear (speakers muted if headphones present)
0x01 – Headphone/Over-ride Set (speakers unmuted if headphones present)
0xF0 - Request Headphone/Over-ride status
Et 0x0D
RESPONSE:
Byte: Description:
St 0x21
Zn Zone number
Cc 0x1F
Ac Answer code
Dl 0x01
Data Relay state
Et 0x0D
COMMAND:
Byte: Description:
St 0x21
Zn Zone number
Cc 0x1D
Dl 0x01
Data 0x01 – Phono
0x02 – AUX
0x03 – PVR
0x04 – AV
0x05 – STB
0x06 – CD
0x07 – BD
0x08 – SAT
0xF0
Et 0x0D
RESPONSE:
Byte: Description:
St 0x21
Zn Zone number
Cc 0x1D
Ac Answer code
Dl 0x02
Data The current source in the indicated zone:
0x01 – Phono
0x(N)2 – AUX
0x(N)3 – PVR
0x(N)4 – AV
0x(N)5 – STB
0x(N)6 – CD
0x(N)7 – BD
0x(N)8 – SAT
N = 0 indicates source is normal mode
N = 1 indicates source is set to processor (fixed gain) mode
Et 0x0D
Current input source (0x1D)
Set/request the current input source.
Example
Command/response sequence to request the current source for Zone 1
where the source is set to ‘PVR’ and set to processor mode:
Command: 0x21 0x01 0x1D 0x01 0xF0 0x0D
Response: 0x21 0x01 0x1D 0x00 0x01 0x13 0x0D

10
Reboot (0x26)
Forces a reboot of the unit.
Example
Command/response to sending a reboot command:
Command: 0x21 0x01 0x26 0x06 0x52 0x45 0x42 0x4F
0x4F 0x54 0x0D
Response: 0x21 0x01 0x26 0x01 0x00 0x0D
COMMAND:
Byte: Description:
St 0x21
Zn Zone number
Cc 0x26
Dl 0x06
Data1 0x52
Data2 0x45
Data3 0x42
Data4 0x4F
Data5 0x4F
Data6 0x54
Et 0x0D
RESPONSE:
Byte: Description:
St 0x21
Zn Zone Number
Cc 0x26
Ac Answer code
Dl 0x01
Data 0x00 – Response
Et 0x0D
Heartbeat (0x25)
Heartbeat command to check unit is still connected and communicating -
also resets the EuP standby timer.
Example
Command/response to sending a heartbeat command:
Command: 0x21 0x01 0x25 0x01 0xF0 0x0D
Response: 0x21 0x01 0x25 0x00 0x01 0x00 0x0D
COMMAND:
Byte: Description:
St 0x21
Zn Zone number
Cc 0x25
Dl 0x01
Data 0xF0 – Heartbeat
Et 0x0D
RESPONSE:
Byte: Description:
St 0x21
Zn Zone Number
Cc 0x25
Ac Answer code
Dl 0x01
Data 0x00 – Response
Et 0x0D