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AntiLog RS232 Serial Data Logger

Current revision: V6.0 (Dual channel) NEW

Upgrades are available to existing customers here

Supporting software is available here NEW

  Want to log important RS232 data?
[AntiLog, Boxed]
  • Need a low cost, reliable way to log RS232 serial port data?
  • Are you looking for something that is easy to use?
  • Do you want to log from one or even two pieces of equipment at the same time, but don't want to use PCs, Laptops or PDAs?
  • Do you need to log output from civil or military GPS receivers?
  • Do you want something small, portable, low power and light weight to slip into your pocket?
  • Need to record binary, ASCII or a mixture in any message format you want as standard with NO resolution or data formatting issues?
  • 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, Laptop or PDA with you?

Then AntiLog is the ideal way to record your RS232 data without requiring a PC, PDA or laptop computer. In use throughout the world, this simple to use, high performance data logger simply plugs into your RS232 data source and it will log data as soon as it is switched on.

  AntiLog key features

  • Very low power operation.
  • High capacity storage options (up to 1TByte).
  • Easy to use. Data collection can be performed by non-technical staff.
  • High performance operation, e.g. full rate recording at 921,600 baud (AntiLogPro).
  • Baud rates supported: 110 to 460,800 (921,600 for AntiLogPro) and user defined.
  • Uses the most comprehensive and user friendly terminal configuration menu system.
  • No need for "configuration jumpers" or hidden "setting switches".
  • Dual channel recording and playback.
  • GPS NMEA sentence filtering and sub sampling options.
  • Powerful time stamping options, even for full eight bit binary data.
  • Single or dual channel event recording, user command outputs, equipment polling.
  • Real time playback (even for dual channel output).
  • Wide power source operating range from 4.5V to 18V.
  • Built in bootloader allows new embedded software upgrades via the internet.

All you need to get you started is a serial port Terminal application to allow you to see and interact with the built in menu system. Many free terminal applications are available, such as the original Hyperterminal program supplied with Microsoft Windows operating systems, or the AntiTermPro application from Anticyclone Systems Ltd which has been specifically designed to support all of the AntiLog product range and features.

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:-

Description File Type File
Product information for AntiLog V6.0
 AntiLog V6.0 Product Info Sheet 

See the upgrade release history for AntiLog products here.

[AntiLogPro OEM]

AntiLogPro is an advanced version of the original AntiLog design that is available as an OEM module with dual channel data recording as standard. It provides the following features:-

  • Very high performance. Full rate recording at 921,600 baud (one channel), 460,800 baud (two channels simultaneously).
  • Fully configurable RS232 line management including individual line inversion and power saving options.
  • Logging of digital logic line states (inputs protected to ±40V).
  • Baud rates supported: 110 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 "On" button.
  • Selectable "Ring Buffer" storage method which retains the most recent data.
  • Select any ports from the three hardware serial ports available for recording and playback.
  • Onboard complete RTC backup solution including battery.
  • Multi-unit support (OEM only)
  • GPS 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 precise timing applications.

Description File Type File
Product information for AntiLogPro OEM
 AntiLogPro OEM Product Info Sheet.pdf 

See the upgrade release history for AntiLog products here.

  Easy to use

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 that!

[AntiLog, Buttons]

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.

  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. AntiLog has the ability to dynamically reduce power consumption based on baud rates in use less than 115,200. This means AntiLog is ideal for recording GPS NMEA receiver data which is generally transmitted at a rate significantly less than 115,200 baud.

AntiLog V6.0 can further reduce power consumption if no RS232 data is being received or transmitted. This can result in up to 25% power saving in trials situations compared to the original single channel AntiLog solution.

  Single or dual channel operation

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 V6.0 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. The RTS/CTS lines on the AntiLog 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. V6.0 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.

  OEM modules
[AntiLog OEM][AntiLogPro OEM]

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 product. 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) or process control systems in hostile environments.

  The Complete 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. You may even record more data from your equipment than you did before with a PC RS232 data logging program because the standard serial port on a PC will miss data every once in a while, especially if a Microsoft Operating System is in use and the equipment baud rate is above 19200.

All AntiLog units now come as standard with an embedded software bootloader which means you can now receive software upgrades via the Internet.

  Government and Military GPS receiver option

There are various Option Packs available to further extend the features in AntiLog. One of these Option Packs is the 'M' option which allows easy capture and replay of ICD-GPS-153, ICD-GPS-150 and similar (ICD-GPS-15x) Government and Military data streams. The 'M' option provides the following capabilities for the V6.0 release:-

  • Includes all standard functions available in AntiLog.
  • ICD-GPS-150, ICD-GPS-153 (ICD-GPS-15x) data stream compatible.
  • Message 'autoconnect' feature to automatically request up to 8 user defined message IDs.
  • Automatically sends out acknowledgements in response to acknowledge requests.
  • LED flash sequence in record mode to show when checksum validated messages are being received.
  • Compatible with RS232 output from SPGR, PLGR, DAGR and similar GPS receivers.
  • Selectable 'real time' playback of ICD-GPS-15x data.
  • Selectable time tagging of all incoming IP messages to 1ms resolution.
  • Button pushes (button events), digital inputs and supply voltage can be inserted into data stream as custom IP messages during a trial.
  • User defined equipment commands can be issued by button pushes and/or at a user defined repeat period.
  • Real time playback can make use of any time tags in the logged data.
  • Playback can hide (raw playback) or expand the time stamps into the output stream.
  • Time tagging and message events implemented as intelligently inserted custom IP messages.

As AntiLog can log two independent channels of data, you can for example log two channels of time stamped ICD-GPS-153 data at the same time with individual messaging requirements, or for example, one channel of ICD-GPS-153 data and one channel of filtered NMEA (both with or without time stamping enabled of course).

  Need a quote or more information?

If so, please fill in and submit the form below and we will reply.

Please complete the required fields marked with a *.

Prices are in UK pounds and exclude V.A.T. at 20.0% (UK Customers).
Additional shipping costs may apply based on your location.
Discounts apply to orders for ten or more units.

(Note: You do not need an email client to use this form)

Your details...
* Contact name
* Your email address for reply
Contact telephone number
What part of the world are you from?
Your requirements...
Unit type

AntiLog Boxed

AntiLog OEM

AntiLogPro OEM
AntiLog V6.0 (dual channel)
Choose type and storage capacity:-
256MB [£199.00]
2GB [£254.00]
4GB [£299.00]
16GB [£320.00]
32GB [£364.00]
256MB [£129.00]
2GB [£184.00]
4GB [£229.00]
16GB [£250.00]
32GB [£294.00]
256MB [£159.00]
2GB [£214.00]
4GB [£259.00]
16GB [£280.00]
32GB [£324.00]
Option Packs...
Hardware Real Time Clock option Fitted as standard Fitted as standard Fitted as standard
Government/Military GPS option 'M' [+£40.00] 'M' [+£40.00] 'M' [+£40.00]
Secure (password access) option 'S' [+£15.00] 'S' [+£15.00] 'S' [+£15.00]
Forced Power Option
(Requires power source in the range 9.5 to 18V, e.g. automotive)
'P' [+£12.00] 'P' [+£12.00]
GPS Receiver simulated output option.
Generate RS232 NMEA output dynamically as though you are a GPS receiver at a user defined location.
Two completely independent channels can be configured to output at the same time from two
simulated locations, all whilst logging up to two channels of RS232 data with a common time stamp!
'G' [+£40.00]
* Quantities required
Any other information you require or would like to let us know...

  Do you need ten or more units?

  For multiple orders, the following price breaks apply  
10 to 24 units
25 to 49 units
50 to 99 units
100+ units
We are able to supply very much higher quantities as required.
Please contact us for more details on higher volume pricing.

  You can now buy AntiLog online

Distributor Link Cards
[martelec] (Martelec Ltd)     [Cards]  

For any further information please contact us using your email client at

Detail may be subject to change without notice. Data applicable to AntiLog embedded software V6.0

(c) Anticyclone Systems Ltd, 2018 Home   -   Introduction   -   News   -   Products   -   Download   -   Feedback   -   Links   -   Search Updated: 22-Jun-2018