BARIX RTC DONGLE User manual

RTC DONGLE
Real Time Clock Serial Interface Dongle
The Barix RTC Dongle is a real time clock device
for the RS-232 serial interface. It allows for time-
based applications such as scheduling, data
logging and automation on stand alone devices,
as well as networked devices in environments
with no NTP server or Internet connection.
The Barix RTC Dongle can be attached to
any Barix product that has an RS-232 serial
interface, such as devices of the Annuncicom,
Exstreamer, Instreamer and Barionet product
families and is supported by applications
like the FTP-MP3 store and forward and the
Barionet standard firmware. Furthermore the RTC
Dongle can be attached to a non Barix device as
long as it features a standard RS-232 serial inter-
face and is programmable.
A plastic strip prevents the built-in batteries from
discharging while in stock. The strip must be
removed prior to installation to power the RTC
Dongle. From that point the built-in batteries
guarantee 3 years of back-up operation. This
period is extended when the connected device is
switched on, powering the RTC via RS-232.
For programming custom applications, the RTC
supports the following command functions:
- setting and reading the time and date
- setting and reading the clock‘s fine adjustment
- switching on and off the LED
- detecting the presence of the RTC
- reading the RTC firmware version
Applications
•Scheduling
•Datalogging
•Automation
Supported Barix Software
•ABCLKitrmware
•Barionetstandardrmware
•Store&ForwardFTP-MP3playerrmware

Barix AG –Seefeldstrasse 303 – CH-8008 Zurich – [e-mail] – www.barix.com
Phone: [phone] – Fax: [phone]
© Barix AG 2012, all rights reserved. All information is subject to change without notice. All menti-
oned trademarks belong to their respective owners and are used for reference only.
Product sheet V4.0
For commercial related questions (distributors
contacts, price list, business opportunities) please
contact [e-mail]
For technical inquiries (problem reports, request
for documentation, etc) please contact
[e-mail]
QUICK INSTALLATION GUIDE
Steps when used with Barix device
1. Remove white battery protection strip
2. Attach to RS-232 port of device
3. Power up Barix device (supported software
will initialize the RTC and set the time/date)
Steps when used with 3rd party device
1. Follow above steps
2. Initialize the RTC using the echo and set time
commands (see command reference below)
COMMAND REFERENCE
Char Hex Description Answer
e 65 Echo, first time use initializes e
(starts) the Real Time Clock
s.... 73 B0B1B2B3Set Unixtime in seconds (4 bytes
big-endian since 1/1/1970 1:00:00)
Example:
73513072DE sets 3/1/2013 10:20:30
t 74 Get Unixtime in seconds (4 bytes B0B1B2B3
big-endian since 1/1/1970 1:00:00)
v 76 Get firmware version 096
0 30 Switch LED off 0
1 31 Switch LED on 1
o. 6F B0Adjust clock speed in ~31 ppm steps
1 byte signed, Example:
6F01 =+1, sets clock to be 31 ppm slower
6FFF =-1, sets clock to be 31 ppm faster
p 70 Get clock speed in ~31 ppm steps B0
ORDERING INFORMATION
RTC Dongle 2011.9095
TECHNICAL SPECIFICATIONS
Electrical
5..15VDC, max. 1mA through RS-232 connector
on DTR and RTS pin (at least one needed)
Unpowered (Battery backup) typ. <10 μA
Connector / Cable
DSub 9 pin female, 1.35 m / 4.4 ft cable
RS-232 Settings
9600 Baud asynchronous, 8 bit, No parity, 1
Stop bit, No hardware handshake
RS-232 pinout
Pin Signal Description
2 TxD Transmit Data
3 RxD Receive Data
4 DTR Power In
5 GND Ground
8 RTS Power In
Miscellaneous
Red LED, software controllable
Mechanical
Plastic case, 225g,
2.28” x 1.6” x 0.76” (57.8mm x 41mm x 19.3mm)
ENVIRONMENTAL
Operating Environment
0°C to +40°C / 32 to 104°F
0 - 70% relative humidity, non-condensing
Storage Conditions
0°C to +40°C / 32 to 104°F
0 - 70% relative humidity, non-condensing
CERTIFICATIONS/COMPLIANT WITH
RoHS (lead free), FCC, CE, C-Tick