Downhole Translator Modules: XL115 & XL215

The XXT Downhole Translators provide a means for integrating third-party intelligent and non-intelligent devices into the MWD tool string for sending analog and digital third-party signals to surface.

XL115 Downhole Translator Module

A downhole module designed to allow intelligent third-party sensors to pass data to, and accept information from, XXT or QDT (Tensor) MWD systems.

XL215 Downhole Translator Module

A general-purpose downhole analog sensor interface and translator module providing for the measurement and telemetry of seven downhole analog input channels and two downhole frequency input channels.


  • Ability to interface third-party sensors to a QDT-compatible tool string
  • Interface to intelligent (serial) data and non-intelligent (voltage and frequency) signals
  • 4 serial interface options
  • Free-format input syntax for labeled numeric data parameters
  • Wide operating voltage and low power consumption


  • Telemetry-compatible with QDT and XXT MWD systems
  • Available in a strongback chassis or as a molded module for integration into your own chassis
  • Low power consumption (approx 7mA @ 28Vdc)
  • Wide operating voltage range (17.5 – 35Vdc)
  • Battery-style end connections
  • Multiple Translators can be used in a tool string


Length9/04 inches
Diameter1.36 inches (excluding O-ring)
Power ConsumptionApprox 7mA @28Vdc
Operational Voltage16 to 36Vdc
Temp Rating175°C
Serial port options (XL115)RS-232 0-5v inverted, single wire
Signal interface (XL215)7 channel 0f 0-5V analogue +2 channels of frequency input
Toolbus CommunicationsUse generic variables (GVs) or virtual variables (VVars)
CompatibilityXXT or QDT MWD systems