AntiLog RS232 Serial Port Data Loggers
High Performance RS232 Data Logging Solutions
Current software revision: V8.1b (Dual channel and multiple unit release)
Logging Important RS232 Data
- Do you need a low cost, reliable way to log RS232 serial port
- Looking for something small, portable, low power and light
weight to slip into your pocket and easy to use?
- Need to record binary, ASCII or a mixture in any format you
want with no resolution or formatting issues?
- Would like to log from one or two pieces of equipment at
the same time, but don't want to use PCs or Laptops?
- Don't want to worry about losing data because the recorder
battery has run out?
- Need to just switch on and leave the equipment data logging for
several days at a time?
- Just want to push an 'On' button to do the lot instead of
running application software?
- Don't want to wait for your system to 'boot up' each time you
just want to log something?
- Want to initialise your equipment in the field but don't want
to bring a PC or Laptop with you?
- Need to log a large number of serial port sources all controlled
from just one serial port connection?
Then the AntiLog range of solutions is the ideal way to record
your RS232 data without requiring a PC or laptop computer. In use
throughout the world, this simple to use, high performance data
logging solution simply plugs into your RS232 data source and
is ready to log data immediately.
AntiLog key features
- Available in boxed or OEM form factors.
- Very low power operation.
- High capacity storage capability (supports up to 1TByte).
- Easy to use so trials can be performed by non-technical staff.
- High performance, e.g. full rate recording at 921,600 baud (AntiLogPro).
- Baud rates: 300 to 460,800 (600 to 921,600 for AntiLogPro).
- Uses the most comprehensive terminal configuration menu system.
- Can record and playback up to two independent channels simultaneously.
- Powerful time stamping options, even for full eight bit binary data.
- GNSS NMEA sentence filtering and sub sampling options for each channel.
- Single or dual channel event recording.
- User output commands, equipment polling.
- Real time playback (even for dual channel output).
- Option to simulate up to two independent GNSS receiver outputs whilst recording.
- Wide power source operating range from 4.5V to 18V.
- No need for "config jumpers", "setting switches" or media configuration files.
- AntiLogPro OEM units can combine into one large multi-channel data logger all controlled from just one serial port.
- Built in bootloader allows new embedded software upgrades via the internet.
All you need to get you started is an RS232 serial port terminal
application on any platform to allow you to see and interact with the built
in menu system. Serial port terminal applications are readily available
including our free AntiTermPro PC based
application from Anticyclone Systems Ltd which has been specifically
designed to support all of the AntiLog product range and features including
data retrieval and multiple unit operation.
For a more complete description of AntiLog's capabilities, please take
time to view the following product information sheet for the current AntiLog
embedded software release:-
User friendly operation
Simply push the 'On' button to start AntiLog recording your serial port
data. Hold the 'Off' button down to stop a data logging session and switch
the unit off. Simply switch on and off like this to continue RS232 data
logging as you require, data will be appended to the store - it's as easy as
You hold the 'On' button down for more than a second to put the unit in
playback mode. In this mode, you can configure the system to your needs. A
menu system appears which you can view and operate using any serial port
terminal application. With this menu system you define exactly how AntiLog
handles data recording and playback. This is how you set recording and
playback serial port settings, recording and playback modes (e.g. 'real
time') and all other options.
While in playback mode, simply push the 'On' and 'Off' buttons as many
times as you want to start and stop data replay. You hold the 'Off' button
down for more than a second to switch the unit off as before.
You are not restricted to playing back data at the same baud rate it was
recorded. You can also optionally embed recorded time tag information in
playback data streams. All settings are non-volatile so you only have to
set them once even if all sources of power are removed.
Low power consumption
There is no need to transport an enormous power source around with you
because instead of consuming hundreds of milliwatts or more of power,
AntiLog can record RS232 data happily for days on a single PP3 battery. As
an example, AntiLog uses typically just 58mW (including media power
consumption) to record full rate continuous binary data at 9,600 baud and
around 90mW at 115,200 baud.
All AntiLog units have the ability to dynamically reduce power
consumption based on baud rates in use (less than 115,200) and data stream
content. AntiLog units consume less power if no RS232 data is being
received or transmitted. This means AntiLog is ideal for recording GNSS/GPS
NMEA receiver data which is generally transmitted at a rate significantly
less than 115,200 baud with gaps between messages.
AntiLogPro is an advanced version of the original AntiLog design
available as a boxed or OEM module with dual channel data recording as
standard. It provides the following additional features:-
(Media card part extracted)
- Very high performance. Full rate recording on one channel
at 921,600 baud or up to 460,800 baud on two channels
- Fully configurable RS232 line management including
individual line inversion and power saving options.
- Logging of digital logic line states (inputs protected to
- Baud rates supported: 600 to 921,600 and user defined.
- Transfer settings from one unit to another simply by
connecting them via a NULL modem cable and pressing the
- Selectable "Ring Buffer" storage method to
retain the most recent data.
- Assign any of the three (OEM) or two (boxed) hardware
serial ports to the recording, playback and menu system
- Onboard real time clock with battery backup.
- Supports selected external I2C bus environment sensors (OEM only)
- Combine many units as one (multiple unit support, OEM only)
- GNSS navigation receiver simulated output option
available (simulate up to two channels of GPS NMEA for
user defined locations in real time).
- Hardware 1PPS synchronization output signal for accurate
timing applications (OEM only).
AntiLog vs AntiLogPro
The following table describes the main capability differences between the
AntiLog and AntiLogPro hardware design variants when running V8.1 of the
| Capability || AntiLog || AntiLogPro
Number of hardware serial ports supported
|| 3 *
Maximum supported baud rate (each channel)
Maximum full rate single channel data logging (baud)
Maximum full rate dual channel data logging
(baud per channel)
Battery test voltage indicator (maximum)
Pins that can be used as logged digital inputs
|| 9 *
Bi-colour LED state indicators
User invertible RS232 lines (e.g. for direct CMOS
Selectable “ring buffer” storage method
One Pulse Per Second (1PPS) output time stamp reference
|| ✔ *
Transfer settings between units connected via
NULL modem cable
Dual channel simulated GNSS receiver output
option (option 'G')
Support for selected external I2C bus environment sensors
|| ✔ *
Multiple unit support using third Auxiliary port
|| ✔ *
* Requires OEM version of the product to gain access to extra
pin header connections.
The fully boxed product comes ready to use. Use our OEM modules to embed
a high quality, single board, RS232 data logging solution into your own
application. The OEM modules are built to last in demanding situations.
They use robust surface mount construction and measure only 50mm x 60mm.
The AntiLog OEM module is functionally identical to our boxed product but it
allows direct access to the removable FLASH media (socket mounted under the
card) and allows direct access to CMOS RS232 levels.
The OEM boards only require the addition of a power source, two push to
make switches ('On' and 'Off' buttons) and a bi-colour LED (two for the
AntiLogPro variant) to realise a complete RS232 data logging solution. You
can use the standard 2.54mm pitch, header to interface directly to your
application. The pin header for example, allows direct connection with OEM
equipment (e.g. OEM GPS receivers) which require RS232 signal connections
at CMOS levels.
For completely unattended use, we offer a Forced Power hardware option
(the 'P' option). With this option, you simply apply power to start data
logging and remove power to stop logging. Apply and remove the power as
much as you want to append data to the store. This option is ideal in
applications where user interaction is not practical such as in vehicle
installations, Unmanned Aerial Vehicles (UAVs), process control systems in
hostile environments or for AntiLogPro OEM modules in a multiple unit
Single or dual channel logging
For most data logging applications you will only need to record RS232
data from a single equipment source (e.g. a GPS receiver). However, the
latest AntiLog V8.1 release offers menu options to log and playback up to
two RS232 data sources at the same time. It's just like having two single
channel AntiLogs in a single box. For dual channel logging, the RTS/CTS
lines on the main serial port connector become the second serial port. You
can configure each port for completely independent operation (e.g.
different baud rates, filtering, time stamping options, etc). Each port
supports it's own equipment polling and it's response to button pushes
during a recording session.
Not only is it possible to record from two channels simultaneously, but
you can play back two recorded sets of channel data at the same time, even
in real time. V8.1 also offers saving and retrieving of complete sets of
user options to a named store to allow almost instant reconfiguration of
your units for different trials applications. This is particularly useful
if you share a unit between applications as you can recall a complete
configuration using a single menu option.
If you record two channels of RS232 data using the one AntiLog unit, the
two data streams also share a common time stamping reference which can be
ideal for later data analysis.
Multiple unit data logging
If you need to log a large number of RS232 data sources at the same time
then you can configure multiple AntiLogPro OEM units into one large
multi-channel data logger. Up to a theoretical maximum of 255 AntiLogPro
OEM dual channel data loggers can be connected together to act as one
multiple channel data logger. All units are controlled from a special
dedicated multi-unit Auxiliary bus serial port which can freely command
units on the bus to switch between record and playback modes at any time.
Our free AntiTermPro supporting
application includes full support for multiple unit operation in a GUI
See more information on multiple unit operation here
Our AntiLog and AntiLogPro products provide an extremely comprehensive
set of features as standard, but additional 'Option Packs' are available
from your AntiLog supplier to extend their capabilities still further.
Option packs are either hardware or software in nature. Hardware option
packs are only available from your AntiLog supplier and can't be
retrofitted. Software option packs can be ordered at the time of purchase
or installed after purchase using the built in bootloader application
standard in all units supplied.
AL=AntiLog, Pro=AntiLogPro, H/W=Hardware option, S/W=Software option
View our full range of Option Packs here
Starts recording as soon as power is applied (no need to push any buttons).
Government and Military GPS Receiver Extension
ICD-GPS-150, ICD-GPS-153 (ICD-GPS-15x) data stream
compatibility for both record and playback modes.
GNSS Simulated Receiver Output
Simulate up to two channels of GNSS (Global Navigation
Satellite System) receiver output at user defined fixed
positions whilst logging up to two channels of data in
record mode at the same time.
Allows a password to be set to prevent unauthorised access
to the menu system to alter configured settings.
Extended 'On' button push
Extends the amount of time required to push and hold the 'On' button
to start the unit in the playback menu system. Often used in medical
The complete data logging solution
All boxed versions of AntiLog come complete with all you need to get you
started. You get an RS232 NULL modem cable (to allow you to connect AntiLog
to a PC or equivalent to upload recorded data), a printed manual, an
Alkaline PP3 battery - and you even get a zip-up carry case!
If the equipment you wish to log data from has a serial port connection
designed to fit into a standard PC, simply plug this instead into AntiLog
and you are ready to record the output from the equipment.
All AntiLog units now come as standard with an embedded software
bootloader which means you can now receive software upgrades via the
Purchasing AntiLog and AntiLogPro units
Limited (based in the United Kingdom) are our approved international
distributor for all of our AntiLog product range. Please visit the Martelec
website where you can purchase units now or you can contact
Martelec to discuss your data logging requirements. The Martelec shop
also hosts a range of high quality accessories including dedicated cables
and power supplies to support the complete AntiLog product range.
martelec.co.uk and martelec.biz are web domains owned by Martelec Limited, UK
You can contact Anticyclone Systems Ltd at any time by email at
Do you need ten or more units?
For multiple orders, the following price break discounts apply
10 to 24 units
25 to 49 units
50 to 99 units
We are able to supply very much higher quantities as required.
Please contact our distributor above for more details on higher volume pricing.
Detail may be subject to change without notice. Data applicable to AntiLog embedded software V8.1b