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Halo P3 RS232 Guide
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♦Hardware Specifications:
Protocol
Baud Rate
Data Bit
Stop Bit
Parity
Flow Cntrl
Connector & Pin definition
Actual Machine Connector : Female DB9
PC Connector
Use straight through cable
(NOT a Null-Modem cable)
9600 bps – serial numbers below 02101 (1way RS232)
38400 bps – serial numbers above 02101 (2 way RS232)
8 bits
1 bits
None
:
No
: Male DB9
PC Actual Machine
Pin 2 RxD ------- TxD Pin 2
Pin 3 TxD ------- RxD Pin 3
Pin 5 Gnd ------- Gnd Pin 5
♦String Format :
ASCII (not decimal) and hexadecimal examples are shown below.
The commas in the Hex example are merely for your ease of reading
and are not required in transmission. All strings must have a space
(line feed) between each number (except two digit numbers). In the
Hex examples the space is already represented with code “20.” The
end of each string must have a carriage return after the last number
with no space in-between, this is represented by “<CR>.”
Command
Power On 1 17 1 1<CR> 31,20,31,37,20,31,20,31<CR>
Power Off 1 17 1 2<CR> 31,20,31,37,20,31,20,32<CR>
Volume Up 1 17 1 25<CR> 31,20,31,37,20,31,20,32,35<CR>
Volume Down 1 17 1 29<CR> 31,20,31,37,20,31,20,32,39<CR>
Tone 1 17 1 21<CR> 31,20,31,37,20,31,20,32,31<CR>
Mute 1 17 1 22<CR> 31,20,31,37,20,31,20,32,32<CR>
Input Direct 1 1 17 1 34<CR> 31,20,31,37,20,31,20,33,34<CR>
Input Direct 2 1 17 1 35<CR> 31,20,31,37,20,31,20,33,35<CR>
String ASCII String Hexadecimal
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Command
String ASCII
String Hexadecimal
Input Aux-Phono
Input CD
Input Tuner
Input Tape
Balance Right 1 17 1 72<CR> 31,20,31,37,20,31,20,37,32<CR>
Balance Left 1 17 1 71<CR> 31,20,31,37,20,31,20,37,31<CR>
Treble Up 1 17 1 74<CR> 31,20,31,37,20,31,20,37,34<CR>
Treble Down 1 17 1 73<CR> 31,20,31,37,20,31,20,37,33<CR>
Bass Up 1 17 1 76<CR> 31,20,31,37,20,31,20,37,36<CR>
Bass Down
Next Source
Please Note: ”<CR>” stands for Carriage Return, the Hex Code is “0D”. A space in
Hex is “20”, a space in ASCII is just a blank space (as shown above).
1 17 1 36<CR>
1 17 1 37<CR>
1 17 1 38<CR>
1 17 1 39<CR>
1 17 1 75<CR>
1 17 1 70<CR>
31,20,31,37,20,31,20,33,36<CR>
31,20,31,37,20,31,20,33,37<CR>
31,20,31,37,20,31,20,33,38<CR>
31,20,31,37,20,31,20,33,39<CR>
31,20,31,37,20,31,20,37,35<CR>
31,20,31,37,20,31,20,37,30<CR>
♦Rx Format (Feedback):
Response information is in plain human readable text when viewed in ASCII Format.
Feedback mimics what is shown on front panel display of actual Preamp. Please note that
units with serial numbers below 02101 do not send any feedback.
An example when input is CD and Left & Right Volume is set to 55:
205,),000,246,205,000, CD, L, 55, 55, R, 000,200
--------HEADER-------- --Input-- ----Volume--- --End---
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