Krell Industries RS-232 User Manual 2
Home Theater
Standard 7.1
Surround
Preamp/Processor
Developer’s Reference
THE LEADER IN AUDIO ENGINEERING
RS-232 Port: Sending Commands
and Interpreting Data
RC-5 Remote: Commands
© 2002 by Krell Industries, Inc. All rights reserved P/N 306016
This product is manufactured in the United States of America. Krell®is a registered trademark of Krell
Industries, Inc., and is restricted for use by Krell Industries, Inc., its subsidiaries, and authorized agents.
All other trademarks and trade names are registered to their respective companies.
Krell Industries, Inc.
45 Connair Road
Orange, CT 06477-3650 USA
TEL 203-799-9954
FAX 203-891-2028
E-MAIL krell@krellonline.com
WEBSITE http://www.krellonline.com
CONT ACT
INFORMA TION
Home Theater Standard 7.1
Surround Preamp/Processor
Developer’s Reference
v 03.0
Overview
This document is designed for application developers who want
to control the Home Theater Standard 7.1 using an external
computer-based device. The document contains five sections:
1 Connecting to the RS-232 Port, including the
RS-232 connector diagram, and RS-232 Port
Protocols, on page 4
2 RS-232 Commands, on page 5
3 RS-232 Status Feedback Description, on page 11
4 RS-232 Status Block Descriptions, showing how the
Home Theater Standard 7.1 reports operational
status, on page 11
5 RC-5 Commands, describing the codes used for
controlling the Home Theater Standard 7.1 via IR,
on page 18.
Krell Home Theater Standard 7.1 Developer’s Reference 3
4 Krell Home Theater Standard 7.1 Developer’s Reference
Connecting to the RS-232 Port
A 9-pin RS-232 port is located on the right-hand side of the Home
Theater Standard 7.1 back panel. Make sure the clamping screws
(or thumbscrews) securely fasten the connection cable from the
external computer-based device to the RS-232 port on the Home
Theater Standard 7.1.
Refer to the operating manual of your external computer-based
device for instructions on connecting to the Home Theater
Standard 7.1.
To wire the male connector, follow these steps:
1. Locate the pin numbers on the male connector plug
(not shown).
2. Locate the pinout numbers on the female connector.
(See Pinout Signal list below).
3. Wire the male connector, matching the pin numbers on
the connector plug to the pinout numbers on the female
connector. Only three signals are necessary: 2=Received
Data, 3=Transmitted Data, and 5=Signal Ground.
The Home Theater Standard 7.1 RS-232 connection port is set to
the following protocols:
9600 Baud 8 Data Bits 1 Stop Bit No Parity
RS-232 Port Protocols
Pinout Signal
1 Data Carrier Detect
2 Received Data
3Transmitted Data
4Data Terminal
Ready
5 Signal Ground
6 Data Set Ready
7 Request to Send
8 Clear to Send
9 Ring Indicator
5 4 3 2 1
9 8 7 6
RS-232 PORT
FEMALE CONNECTOR
(located on the back panel
of the Home Theater Standard 7.1)
WIRING THE MALE
RS-232 PORT
CONNECTOR
Krell Home Theater Standard 7.1 Developer’s Reference 5
MENU
COMMANDS
AUTO-STATUS
COMMANDS
GENERAL
DEVICE SELECT
COMMANDS
LEVEL
COMMANDS
RS-232 Commands for the Home Theater Standard 7.1
Up UPZ
Down DWNZ
Left LFTZ
Right RGTZ
Menu MENZ
Enter ENTZ
Previous PRVZ
DVD Device Select
1
DVDZ
LD Device Select
1
LDZ
Satellite Device Select
1
SATZ
VCR Device Select
1
VCRZ
TV Device Select
1
TVZ
CD Device Select
1
CDZ
Tuner Device Select
1
TUNZ
Aux1 Device Select
1
AU1Z
Aux 2 Device Select
1
AU2Z
Tape Monitor Select
1
TPZ
Disable Auto Status ASTDZ
Enable Auto Status ASTEZ
Get Status STAZ
COMMAND RS-232 CODE
1
The General Device Select Command is the best choice for normal operation: It always functions on the
currently selected zone and engages any configurations set through the Home Theater Standard 7.1 menu.
Up UPZ
Down DWNZ
Main Speaker Volume 000 - 152 XXXMVLZ
Zone 2 Speaker Volume 000 - 152 XXXRVLZ
Center Trim Select then use UPZ and DWNZ
must be on main zone ICVLZ
Surround Trim Select then use UPZ and DWNZ
send twice for Back Trim Select
must be on main zone IRVLZ
Sub Trim Select then use UPZ and DWNZ
must be on main zone ISUBZ
Center Speaker Trim 000 - 020, sets -10 to +10 dB XXXCVLZ
Surround Speaker Trim 000 - 020, sets -10 to +10 dB XXXSRLZ
Back Speaker Trim 000 - 020, sets -10 to +10 dB XXXBVLZ
Subwoofer Trim 000 - 020, sets -10 to +10 dB XXXSVLZ
Current Zone Balance Select then use UPZ and DWNZ IBALZ
Balance 000 -026, sets right off, left +6,
through right +6, left off 1/2 dB steps XXBALZ
Zone 2 Balance then use UPZ and DWNZ BRLZ
Mute Current Zone MUTZ
Mute Main Zone MUTMZ
Mute Zone 2 MUTRZ
Night Compression NTCZ
Normal Compression NMCZ
Max Compression MXCZ
7.1 Input select
2
AMCZ
Analog Audio Input-1
2
AS1Z
Analog Audio Input-2
2
AS2Z
Analog Audio Input-3
2
AS3Z
Analog Audio Input-4
2
AS4Z
Analog Audio Input-5
2
AS5Z
Analog Audio Input-6
2
AS6Z
Analog Audio Input-7
2
AS7Z
Analog Balanced Input
2
AB1Z
Analog Tape Select
2
ATPAZ
Analog VCR Select
2
AVCAZ
Coax-1 Digital Audio Input Select
2
CO1Z
Coax-2 Digital Audio Input Select
2
CO2Z
Coax-3 Digital Audio Input Select
2
CO3Z
Coax-4 Digital Audio Input Select
2
CO4Z
Coax-5 Digital Audio Input Select
2
CO5Z
Coax-6 Digital Audio Input Select
2
CO6Z
Optical-1 Digital Audio Input Select
2
OPT1Z
Optical-2 Digital Audio Input Select
2
OPT2Z
Component Video-1
2
CM1Z
Component Video-2
2
CM2Z
Composite Video-1
2
CS1Z
Composite Video-2
2
CS2Z
Composite Video-3
2
CS3Z
Composite Video-4
2
CS4Z
S-Video-1
2
SV1Z
S-Video-2
2
SV2Z
S-Video-3
2
SV3Z
S-Video-4
2
SV4Z
6 Krell Home Theater Standard 7.1 Developer’s Reference
RS-232 Commands for the Home Theater Standard 7.1, continued
COMMAND RS-232 CODE
GENERIC ZONE
DIRECT SELECT
COMMANDS
(
Works on current
zone)
Level Commands,
continued
2
Direct Select Commands override the configurations set through the Home Theater Standard 7.1
configuration menus.
Note
It is best to use the Home
Theater Standard 7.1
on-screen configuration
menus, not the Generic
Direct Select Command,
to configure a particular
device. Please see the Home
Theater Standard 7.1
Owner’s Reference for
configuration details.
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