Tascam HD-R1 Manual

TASCAM HD-R1

Serial Control port

RS-232C Protocol Specification Document

Ver. 1.10

September 2010

TEAC Corporation

2 TEAC Corporation

1. Overview

You can control the HD-R1 from a computer or other external device using its RS-232C port. In this document,

the HD-R1 is the controlled device, and the external device that controls it is the control device.

2. Specifications

Electrical specifications

Applicable standard JIS X-5101 (equivalent to old JIS C-6361 and EIA RS-232C)

(Not compatible with RS-422A in commercial use VCRs and other equipment)

Receiver impedance 3 KΩor more measured at applied voltage of ±3 – ±25 V

Sender open circuit voltage ±25 V or less

Receiver open circuit voltage ±3.3 or less

Signal discrimination Logic “1” +2 V or more

Logic “0” +0.8 V or more

Transmission specifications

Circuit format Three-wire, half duplex

Transmission format Digital binary serial transmission

Data signal speed 9600 bit/sec

Character length 8 bits

Parity bit None

Stop bit 1 bit

Note: The settings are fixed for the data signal speed, character length, parity bit and stop bit. The control device

must be adjusted to match the HD-R1 settings.

Pin configuration

Connector D-sub 9-pin female (inch screw thread)

Port pin allocations and input and output signals

number

In/Out Signal Description

1 - NC Not used

2 In Rx Data Receive data*

3 Out Tx Data Send data

4 - NC Not used

5 - GND Ground

6 - NC Not used

7 - NC Not used

8 - NC Not used

9 - NC Not used

*Raise the voltage of Rx Data to comply with the RS-232C standard.

TASCAM HD-R1 RS-232C Protocol Specifications

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Controlled device (this unit) Control device

3. Command format

3.1 Command format overview

The serial protocol was designed to be able to function using common terminal programs. Therefore, all markers are

printable 8-bit ASCII characters, and the end of line marker is flexible. Unless otherwise indicated, character strings

are not case sensitive. Every message has the same structure as indicated below, but some messages do not contain all

the fields defined below.

Parameter ID: A string of 1–24 characters specifies the parameter handled, including queries. Spaces before and

after parameter character strings are ignored. Unless otherwise indicated, character strings are not case sensitive, and

do not contain equal signs, question marks or exclamation points.

Command: One character defines what the command does. This is the same for queries.

Commands include “=” (set value) and “?” (query).

Value: Strings are of 1 to 24 characters, including query values. Spaces before and after character strings are ignored.

Unless otherwise indicated, character strings do not distinguish between upper and lower case characters.

End Marker: One or two character strings. Both a carriage return followed by a line-feed (CR LF) and a line-feed

(LF) are valid. The HD-R1 always accepts either type of end marker, and it can also send them.

Below is an example of a typical message. There are no blank spaces inserted after the Parameter ID and Value

character strings, and one end marker character string is used.

TASCAM HD-R1 RS-232C Protocol Specifications

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The command format is as follows.

Parameter ID Cmd Value End Marker

Character string Input Source = Analog/Mic LF

(or CR+LF)

ASCII codes

(decimal)

73 110 112 117 116 32 83 111 117 114

99 101

61 65 110 97 108 111 103 47 77

105 99

Conventions

In this document commands sent to the HD-R1 are indicated as follows.

Input Source?

Responses from the HD-R1 are indicated in italic.

Input Source=Analog/Mic

3.2 Explanation of command types and concrete examples

Input commands

Parameter query

When the input message command field contains a “?” (question mark), the message is a parameter query command.

If a parameter is not recognized or does not support this function, the HD-R1 will return an error message. Otherwise,

it will respond with the current value of the parameter. The following is an example of a command that requests the

current value of a parameter and the response from the HD-R1.

Input Source?

Input Source=Analog/Mic

Set parameter

When the input message contains an equal sign in the command field, the message is a set parameter command.

When the HD-R1 receives a set parameter command, it will set the parameter as requested if conditions make it

possible and the value is valid. If the parameter is set successfully, the HD-R1 will not respond. If the parameter is

not recognized or the value is not valid, it will respond with an error. Usually, character strings for the parameter IDs

and their values match the text shown on the LCD user interface screen. The following is an example of a command

that sets a parameter.

Input Source=Analog/Mic

TASCAM HD-R1 RS-232C Protocol Specifications

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Output commands

Parameter value response

When the command field of a message being set contains “=” (equal sign), the HD-R1is reporting the current value of

the parameter. Usually, character strings for parameter IDs and their values match the text shown on the LCD user

interface screen. For example:

Input Source?

Input Source=S/PDIF

Error responses

When the command field of a message being sent to it contains “?” (question mark), if the HD-R1 cannot interpret

the received message it reports an error. For example, the HD-R1 will respond as follows if it receives a parameter

query for an invalid parameter called “Blah.”

Blah?

Blah???

If the HD-R1 receives an invalid parameter set command, it will respond as follows.

Blah=Foo

Blah???Foo

Set value refusal responses

If the HD-R1 receives a parameter set command for a valid parameter, but the value is invalid, the HD-R1 will

respond with “!” (exclamation point) added to the command field.

Input Source=Blah

Input Source!Blah

If the HD-R1 receives a parameter set command for a valid parameter, but the value is missing, the HD-R1 will

respond as follows.

Input Source=

Input Source!Missing Value

Some parameters can be applied only when the transport is stopped. If you try to change one of these parameters

when the transport is not stopped, the HD-R1 responds with “*” (asterisk). For example, if you try to change the

sampling frequency while recording, the HD-R1 will respond as follows.

WAV Sample Rate=44.1 kHz

WAV Sample Rate*44.1 kHz

Special incoming commands

End markers

By sending a line feed (LF) or carriage return and line feed (CR LF), the HD-R1 can be informed of the end of a

message. The HD-R1 can accept this query or command at any time. After turning the power on, the end marker is set

to CR LF by default. The following are end marker setting commands.

End Marker=LF

End Marker=CR LF

TASCAM HD-R1 RS-232C Protocol Specifications

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Protocol width

Since fixed parameter widths for messages might be preferable depending on the device, the HD-R1 can be set to

either fixed or variable parameter width using a message. When set to fixed, both the parameter ID and the value are

padded with blank spaces to make them 24 characters. The HD-R1 can accept this query or command at any time.

After turning the power on, the parameter width defaults to variable.

Protocol Width=Fixed

Protocol Width=Variable

Software Version

Sending this command causes the HD-R1 to reply with the current software version number.

Version?

Version=1.0

4. Command details

4.1 Direct transport commands

Since the potential behavior of keys (PLAY, STOP, etc.) changes depending on the current transport state, sometimes

they do not respond as intended. Direct transport commands do not depend on the current transport state, however,

and this can be advantageous in some circumstances. For example, by sending a “Record” direct transport command,

the HD-R1 should start recording immediately.

The following is an example of the usual format of a direct transport command.

Parameter ID Cmd Value End Marker

Character string Transport = <Value> LF (or CR+LF)

TASCAM HD-R1 RS-232C Protocol Specifications

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The following is a list of direct transport commands.

Value (character string) Functions

Stop Stops the transport

Play Starts playback

Record Starts recording

Ready Puts unit in ready to play mode

Monitor Puts unit in ready to record mode

First Track Moves to first track

Next Track Moves to next track

Prev Track Moves to previous track

Last Track Moves to last track

Next Track/Marker Moves to next track or next marker

Prev Track/Marker Moves to previous track or previous marker

TASCAM HD-R1 RS-232C Protocol Specifications

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The following are valid commands when the transport is stopped.

Value (character string) Function

First Folder/Playlist Moves to first folder or first playlist in playbac

mode

Next Folder/Playlist Moves to next folder or next playlist in playbac

mode

Prev Folder/Playlist Moves to previous folder or previous playlist in

playback mode

Last Folder/Playlist Moves to last folder or last playlist in playbac

mode

The following are examples of transport state queries.

Value (character string) Meaning

Transport? Asks for the transport state

Transport=Record Example HD-R1 response

The following are examples of other state queries.

Value (character string) Meaning

Current Track Number? What is the current track number?

Total Time Elapsed? What is the total elapsed time?

Event Elapsed? What is the elapsed time?

Event Remaining? What is the remaining time?

TASCAM HD-R1 RS-232C Protocol Specifications

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4.2 Setting commands

Most of the HD-R1’s settings can be configured remotely. Their parameter IDs and acceptable values are defined in

the following tables. With some exceptions, all parameters may both be set and queried with a command. Although

they are not case sensitive, blank spaces within parameter IDs and setting values must be exactly as shown.

The format for setting commands is the same as for others as shown in the example below.

Parameter ID Command Setting value End Marker

Character

string

Auto Cue (example) =: set value

?: query

<Value>: as necessary

LF (or CR+LF)

The following can be set and queried at any time.

Parameter ID Valid values

Num Of Folders Total number of folders (query only)

Num Of Playlists Total number of playlists (query only)

Repeat Off

Auto Ready Off

Auto Cue Off

-72 dBFS

-66 dBFS

-60 dBFS

-54 dBFS

-48 dBFS

-42 dBFS

-36 dBFS

-30 dBFS

-24 dBFS

Channels Mono Left

Mono Right

Mono Summed

Stereo

WAV Sample Width 16 Bits

24 Bits

TASCAM HD-R1 RS-232C Protocol Specifications

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Mono MP3 Bit Rate 32 kbps

40 kbps

64 kbps

80 kbps

96 kbps

112 kbps

128 kbps

160 kbps

Stereo MP3 Bit Rate 64 kbps

80 kbps

128 kbps

160 kbps

192 kbps

224 kbps

256 kbps

320 kbps

Mark Audio Overs Off

Mark Time Interval Off

1 minute

2 minutes

3 minutes

4 minutes

5 minutes

10 minutes

30 minutes

60 minutes

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