Zeitronix - Your Ultimate Tuning Partner

NEW Award Winning Black Box Data Logger
for Zt-2 and Zt-3 Wideband Systems

Award Winning Zeitronix Black Box Data Logger The Zeitronix Black Box Data Logger is a flash memory data logger for use with Zeitronix Zt-2 or Zt-3 Wideband systems. The logger accepts 1GB or 2GB Micro SD flash memory cards. Power and data are supplied through a single 5 ft (1.5m) cable plugging directly into the Zt-2 or Zt-3 DATA port.


  • Large button for easy activation when wearing driving/racing/motorcycle/ATV gloves
  • LED activity indicator
  • Long 5 ft (1.5m) cable for accessing remote Zt-2 or Zt-3 Wideband controllers
  • Plug and play installation, no wiring required
  • Supports 1 GB or 2 GB Micro SD cards for 100’s of hours of logging
  • Auto-saving keeps data in the event of a power loss

  • Air/Fuel Ratio
  • Lambda
  • Boost and Vacuum
  • Fuel Pressure
  • Oil Pressure
  • RPM
  • Air Intake Temperature
  • Oil Temperature
  • Exhaust Gas Temp.
  • Water Temperature
  • Transmission Temp.
  • Throttle Position
    and more...

    Data recorded from Zeitronix Zt-2 or
    Zeitronix Zt-3 Wideband Systems.
    All model years supported.
Plots, Text, Dashbaord Software Display


The Micro SD card must be formatted with a “FAT” (FAT16) file system. Plug the Zeitronix Black Box Data Logger connector into the Zt-2 or Zt-3 DATA port. A data splitter may be used if connecting alongside one or more Zeitronix displays such as the ZR-2 Multi-Gauge, ZR-1 AFR/Lambda Gauge, or LCD screen.

Micro SD cards are inserted into the Zeitronix Black Box Data Logger face up, as shown to the right. The Micro SD connector slot is spring loaded. Push to insert and the card will lock in. Push again to remove and card will spring outward.
Inserting the Micro SD card upside down or backwards may result in connector damage.


Press the center of the button to start and stop logging sessions. The Zeitronix Black Box Data Logger will display a steady LED light when initially powered. Press the button one time to begin logging. The LED will flash quickly while logging data. Press the button again to end the log and the LED will become a steady light. The Micro SD card will now contain a file with the name "log001.sdl". Pressing the button again will begin a new log with the name "log002.sdl".

Increasing values are used for each new log file name. A total of 255 logs can be created. Log file names will use the highest number available on the SD card until "log255.sdl" is reached. Logs will then be created using the lowest log file number available. If no file names are available the LED will blink two times to indicate an error.

Files can be accessed by removing the micro SD card from the Black Box Data Logger. A micro SD card reader can be used to copy files from the card. The files have fixed created and accessed dates, for best results you may wish to copy the logs into a folder (directory) with a date matching when the logs were generated. Files are viewed with the Zeitronix Data Logger program. Some log files may need to be adjusted to scale and units in ZDL software, comments can be added and modified files can be saved in zdl format for later viewing. Zeitronix Data Logger program is available at:

The Black Box Data Logger has no internal battery or parts which require maintenance. The Zeitronix Black Box Data Logger LED will repeat a single or double blink if an error has occurred, see the following table for details.


Condition LED Action
Ready On Press the button to begin logging
Logging Fast Blink Press the button to end logging
No Micro SD Card Present Slow Double Blink Insert a Micro SD card into the slot (face up, gold connectors facing down)
All log files are in use Slow Double Blink Delete one or more files from the Micro SD card
Main directory is full Slow Double Blink The main (root) directory may be full if it contains many additional files not created by the Black Box Data Logger. Delete files from the Micro SD card root directory.
Micro SD Card is full Slow Double Blink Delete one or more files if no free space is left on the Micro SD card.
Micro SD Card not formatted or not “FAT” (FAT16) formatted Slow Double Blink Using a PC double click “My Computer”, right click on the Micro SD card drive, choose “Format…”, choose File System “FAT” and press “Start”.
Warning: All card contents will be deleted!  (See notes on formatting below)
No data is being received Slow Single Blink Plug the Black Box Data Logger directly into the Zt-2 or Zt-3. If using a custom cable verify the connections using the wire specification given below.

Fast Blink = 5 blinks per second.
Slow Double Blink = 2 blinks every 1.6 seconds
Slow Single  Blink = 1 blink every 1.6 seconds

The Black Box Data Logger button must be pressed to properly start and end Micro SD log files. If a power loss occurs, either through unplugging the device or losing power to the Zt-2 or Zt-3 by turning off the vehicle, data loss may occur. If the Micro SD card is removed while logging data loss may occur. The Black Box Data Logger has an auto-save feature limiting loss to the last 10 seconds of data logging. This feature cannot prevent all possible errors and pressing the button to end a log is always recommended.

If power is lost or the card is removed accidentally the following procedure can be used to correct file system errors on the Micro SD card:
Double click “My Computer”, right click on the Micro SD card drive, choose "Properties" then select the "Tools" tab. Press the button labeled "Check Now". Check the box marked "Automatically fix file system errors" and press the "Start" button.

Pin Wire Color Purpose

RJ-11 Wire Colors

Black Box Data Logger Dimensions Diagram

1 Yellow
Serial Data Signal
2 Green
Not Used
3 Red
Power (5 volt)
4 Black
When the Black Box Data Logger is plugged into a Zt-2 or Zt-3 the yellow wire is located closest towards the oxygen sensor harness.


Black Box Data Logger, helmet and glovesThe Zeitronix Black Box Data Logger can be used to log raw serial data (RS-232) from 3rd party serial devices. Data is read and sequentially and is stored, without changes, as log files on a FAT (FAT 16) formatted Micro SD card. The Black Box Data Logger is setup for a 9600 baud rate connection. For additional details or additional supported baud rates please contact Zeitronix at sales@zeitronix.com.


For automotive use only. This product is for off road use only.
This product is not water proof. To be used with Zeitronix Zt-2 or Zt-3 Wideband AFR Meter only.
Never place in a location, which obstructs the view. Never tune the car while driving.
Tune responsibly. Zeitronix Inc. is not responsible for any damages.


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For best results use the SD Card Association's SD Card Formatter. This application ensures proper formatting for any SD card.

In the rare case an SD card formatted on a PC does not allow logging please use the SD Card Formatter utility to format the micro SD card.  This will ensure proper operation with the Black Box Data Logger.

SD Formatter for Windows v 3.1          SD Formatter for Mac 0.91.