Parasound Halo P 3 User manual

Halo P3 RS232 Guide

♦Hardware Specifications:

Protocol

Baud Rate

9600 bps – serial numbers below 02101 (1way RS232)

38400 bps – serial numbers above 02101 (2 way RS232)

Data Bit

8 bits

Stop Bit

1 bits

Parity

Flow Cntrl

:None

Connector & Pin definition

Actual Machine Connector : Female DB9

PC Connector

Use straight through cable

(NOT a Null-Modem cable)

: 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 String ASCII String Hexadecimal

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>

Command

Input Aux-Phono

Input CD

Input Tuner

Input Tape

String ASCII

1 17 1 36<CR>

1 17 1 37<CR>

1 17 1 38<CR>

1 17 1 39<CR>

String Hexadecimal

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>

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 1 17 1 75<CR>

1 17 1 70<CR> 31,20,31,37,20,31,20,37,35<CR>

31,20,31,37,20,31,20,37,30<CR>

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).

♦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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