Test Equipment

BTP Systems has furnished a wide variety of test stations, both portable and fixed to ensure the proper electrical and mechanical performance of the various systems produced, repaired, and maintained at BTP Systems.  These test stations include:

Portable Antenna Controllers

 

A number of different configurations of this portable test equipment have been designed to work with the FOT 10’/NMT Shore Legacy, FOT 4’, WSC-6, and Harris WSC-6A (V)9 pedestals.   These systems not only drive the train, elevation, and cross-level motors but they also communicate with the pedestals respective encoders and resolvers to test and verify orientation all while monitoring voltage and current draw along with BITE status.  Fully automated test procedures are created via LabVIEW software so often a full test is completed by simply connecting the test equipment, clicking a software button, and waiting for test results while viewing real time axis torque plotting.  These units are all COTS based to keep prices and lead times down.

SubHDR Portable Test Station

This portable test systems is designed specifically for the SubHDR Mast Group.  It provides 270 VDC in order to power the mast, MMS, and antenna motors.  With a self-contained 400Hz reference the system can perform position control of the APG’s 3 separate axes while performing diagnostics tests such as band feed cycle tests and torque plots.  Command and feedback interfacing of the Mast Motion Sensor (MMS) is accounted for with a RS-422 serial interface for alignment and performance verification.  Discrete I/O interfacing of various mast signals including RF Gate, RF Interlock, Flood, NED, Over Temp., and Mast Address is also provided.  In addition to all this, the portable test system also includes an internal X-Band IF signal (-45 to 10 dBm) for SHF testing.  

SubHDR Mast Motion Sensor Test Station

National Instruments PXI technology is used to communicate with the Mast Motion Sensor (MMS), a ring laser gyro inertial navigation system (INS), for calibration and test.  This test station also utilizes a 2-Axis Rotary/Tilt table, also controlled by the PXI equipment, to change the orientation of the MMS so the full range of roll, pitch, and heading accuracy of the device can be tested.   Verification can be accomplished in both dockside and at-sea modes while sixty minute drift run tests for sensor bias induced integration errors are also conducted.   The Rotary/Tilt table can also place the MMS at 7 different specific positions for mini-bias calibration of the units.  The test system can also download the MMS’ fault history to check for intermittent failures.  Currently, designs are in place to upgrade the entire test setup such that the entire APG may be mounted to a 2-axis position so the MMS need not be removed from the system for testing


 

SubHDR Automated Resistance Tester

This fully automated system allows for resistance measurements of the mast and APG through the use of an Agilent 34980A Multifunction Switch and Measurement Unit and modular cable assemblies.  Loopback test plugs allow one user to complete these resistance measurements via the automated software.  A LabVIEW GUI program also developed by BTP Systems is run off a laptop connected to the test system.

NMT Continuity and Resistance Tester

This portable test equipment, through the use of adapter cables can be connected to any of the Q/Ka, X/Ka, Q Shore, and Legacy NMT systems.  The purpose of the equipment is to drive the train motor of these pedestals while the resistance and continuity of all circuit paths that traverse the slipring are automatically tested and recorded into a report.  The system can be connected at either the base of the pedestal, or in the electronics room at the CG cabinet so all interfacing CG cables may be tested in addition to the pedestal itself.  National Instruments PXI technology including the PXI-8101 Embedded Controller, PXI-6221 Multifunction DAQ, PXI-4065 6½-digit PXI DMM, and PXI-2527 64-Channel 300V Multiplexer Switch  are utilized at the heart of this system.