The system supports most downhole tools using pulse type data transmission. It also includes a connector for input of analog signals allowing the system to be used as a data recorder.

The operator interface includes a display of the positive and negative pulse heights (obviating the need for an oscilloscope)and discriminator levels may be set manually, or automatically by the software.

Services are predefined so that the operator simply selects the required services and is presented with a fully configured service set up with the last tool string and calibrations run. If other tools are to be run, the graphical tool string editor is used to select the required tool and load the appropriate parameters and calibrations.

Data monitors include raw and calibrated data of all sensors, including depth and line speed.

Multiple log plot windows may be opened for comparison of, for example, main and repeat log sections. Log plots may be paused and scrolled to any depth and annotations added, while data acquisition continues.

Depth correlation may be performed while logging, with the screen plot and system depth updated until correct depth is attained.

Log curve scales and other presentation parameters may be adjusted while logging and the screen plot redrawn until the desired output is obtained.

The hardcopy plotter may be stopped and started at any time, presenting any interval with any desired presentation format. Multitasking allows log-heading data entry and other ancilliary tasks to be performed while logging continues. In this way rig time is reduced and logs are delivered faster.