AntiLog and AntiLogPro - High performance RS232 data loggers
Reliable logging of all your RS232 serial port data and more
Our portable RS232 data logger products are the ideal way to reliably
record your RS232 serial port data. These easy to use data loggers simply
plug into your RS232 data sources and are immediately ready to record your
important RS232 data. They require very little power and can simultaneously
record selected digital line states, digital line state transitions and more
as inserted events.
Available in OEM form
Dual channel, full rate recording up to 921,600 baud.
Support for up to 1TB storage.
Current software revision: V9.0d (dual channel and multiple unit release)
Our AntiLog and AntiLogPro product range
AntiLog and AntiLogPro RS232 data loggers are available in boxed or OEM
form factors. Each can record up to two completely independent sources of
data at the same time, even at full data rate.
Boxed units come complete with all you need to get you started. They
can be powered for long periods of time from a PP3 style battery fitted
internally or from an external DC power source.
OEM units give you maximum flexibility to embed a high quality data
logging solution into your own system design. They can even be configured
to log data as soon as power is applied, and append more data each time power
is re-applied making it extremely easy to integrate them into an existing
AntiLog key features
Very low power operation (can easily be battery powered).
High capacity storage capability (supports up to 1TByte).
Data can be binary, ASCII or a mixture in any format you want.
Easy to use so trials can be performed by non-technical staff.
Full rate, dual channel recording up to 921,600 baud (AntiLogPro).
Baud rates: 300 to 460,800 (600 to 921,600 for AntiLogPro).
Uses the most comprehensive terminal configuration menu system.
Powerful time stamping options, even for full eight bit binary data.
GNSS NMEA sentence filtering and sub sampling options per channel.
Digital logic level recording, polled or sampled as required.
'EventIn' logic transition captures up to 200Hz with 1ms timestamp resoltion.
Multiple user output commands for equipment polling.
Real time playback (even for dual channel output).
Option to simulate up to two independent, real time GNSS receiver NMEA outputs whilst recording.
Wide power source operating range from 4.5V to 18V.
No need for "config jumpers", "setting switches" or complex configuration files.
AntiLogPro OEM units can combine into one large multi-channel data logger controlled from just one serial port.
Built in bootloader allows new embedded software upgrades via the internet.
AntiLogPro advanced features
AntiLogPro is an advanced version of the original AntiLog design
available as a boxed or OEM module all with dual channel data recording as
standard. AntiLogPro RS232 data loggers provide the following additional features:-
(Media card part extracted)
Exceptionally high performance. Able to record full rate data on two
channels at 921,600 baud simultaneously.
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 V9.0 of the
Number of hardware serial ports supported
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
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
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.
User friendly operation
For boxed units, simply push the 'On' button to start recording. Hold
the 'Off' button down to close the current logging session and to switch the
unit off. Simply switch on and off like this to append data to the store in
new recording sessions - it's as easy as that! For OEM units supplied with
the Forced power ('P' option) simply applying and removing power starts and
stops data logging in a similar way.
Hold the 'On' button down for two seconds or more during switch on to put
the unit in the playback menu mode. In this mode, you can configure the
system to your needs using the unit's intuitive menu system. You can define
exactly how AntiLog handles data recording and playback using the extensive
number of options available. All settings are non-volatile so you only have
to set them once even if all sources of power are removed.
You need an RS232 serial port terminal application on any platform to
allow you to see and interact with the menu system. Serial port terminal
applications are readily available, including our terminal in a web browser on this web site, and
our free and full featured AntiTermPro
PC based application which has been specifically designed to support all of
the AntiLog product range features.
While in playback menu mode, simply push the 'On' and 'Off' buttons as
many times as you want to start and stop data replay. 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
Low power consumption
There is no need to transport an enormous power source around with you
because instead of consuming many hundreds of milliwatts or more of power,
AntiLog data loggers typically use just 58mW (including media power
consumption) to record full rate continuous binary data at 9,600 baud and
around 90mW at 115,200 baud. So for example, AntiLog boxed units can record
RS232 data happily for days on a single PP3 battery.
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.
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). This option is fitted as standard to all AntiLogPro OEM
units and can be requested for the original AntiLog OEM hardware. 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 configuration.
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 form.
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.
Starts recording as soon as power is applied, so no need to push any
buttons (standard on all AntiLogPro OEM modules).
Government and Military GPS Receiver Extension
Dual channel ICD-GPS-150, ICD-GPS-153 (ICD-GPS-15x) data stream
compatibility for both record and playback modes. Adds menu options
to define message time stamping, event recording and automatic message
connection requests during record mode.
GNSS Simulated Receiver Output
Simulate up to two channels of GNSS (Global Navigation Satellite
System) receiver output each with their own 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 download recorded data), optional printed manual
(electronic copies are always supplied), 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 come standard with an ultra simple to use embedded
software upgrade capability which means you can receive software upgrades
via the Internet which you simply transmit at your unit and the upgrade is
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:-
How to purchasing AntiLog and AntiLogPro units
We offer the full range of AntiLog and AntiLogPro RS232 data logging units, all option
packs, and all related accessories in our 'Martelec' shop. For more
information, please click on the 'Purchase units' button below.