Antenna Measurement Systems
 
.pdf version
 
  NSI-RF-TRU

Transmit/Receive Unit (TRU)

DESCRIPTION

The NSI-RF-TRU Transmit/Receive Unit (TRU) features improved integration for range automation. Like the RTM, the TRU allows automation of configuration changes while simplifying system operation. The TRU allows the range operator to switch configurations without changing RF cable connections, thereby reducing errors and improving productivity.

The NSI-RF-TRU is available in various configurations depending upon automation requirements. The TRU provides a wide range of options and modules for automating any type of antenna range. TRU modules combine high quality RF components and switches to provide a flexible platform for a wide variety of antenna range configuration control.

TRU modules incorporate switchable amplifiers, couplers, mixers, programmable step attenuators and other RF elements that may be combined in a variety of ways to create a highly automated antenna range. TRU modules are more highly integrated than RTM modules and are capable of being mounted on the probe carriage for some scanners.

 

FEATURES

  • Modular design supports high level of range automation requirements
  • 1 to 18.0 GHz (Higher frequency modules available upon request)
  • LNA and programmable step attenuator integrated with mixer module
  • Compatible with NSI Panther or Agilent PNA systems
  • Modules include base, mixer, 2nd LO mixer, 40/50 GHz Multiplier.
  • Mixer modules are identical and connect to DFC LO/IF unit with single LO/IF cable
  • Test and reference LO cables do not have to be of the same length
  • Remote operation through standard LAN interface
  • TRU Dynamic Link Library is compatible with NSI2000 script language and can support stand alone applications
  • Includes easy-to-use TRUPanel software


TRU SYSTEM BLOCK DIAGRAM


NSI-RF-TRU Used to Automate Near-field Range Configuration (LO/IF cables not shown)

TRU BLOCK DIAGRAM (Base Module & Two Mixers)

 

 
INCLUDES THE FOLLOWING COMPONENTS

TRUPanel Software provides easy-to-use interface for TRU configuration and status monitoring
  • NSI-RF-TRU Transmit/Receive Unit
  • TRUPanel software
  • DLL for integration with other applications
  • Power supply & cord
  • User Guide and Programming Manual
  • Two year warranty

    Modules Available:
  • Base (amplifier, coupler, RF Switches, control)
  • Mixer (LNA, PSA, DFC Mixer, RF Switches)
  • 2nd LO (RF Switches, Mixer)
  • 40 GHz TRU Multiplier module
  • 50 GHz TRU Multiplier module

    •  
    OPERATION

    The NSI-RF-TRU communicates with a host computer using a LAN interface. The message-based protocol and object-oriented software provide a modular, easy-to-use environment for antenna range automation.

    The TRUPanel application provides a virtual front panel for the user to configure and monitor status of the TRU. Multiple TRUs in a system are easily controlled by the TRUPanel software. The NSITRU.DLL software allows custom automation solutions to be developed for a wide range of platforms including NSI 2000 Scripts, VB and VBA.

    SPECIFICATIONS

    Frequency Range 1 to 18.0 GHz (1 to 40 or 50 GHz for Mpy modules)
    Base Module Amplifier Gain 24 dB
    Base Module Amplifier Pout +17 dBm
    Mixer LNA Gain 34 dB
    Mixer LNA Pout +8 dBm
    Mixer LNA NF 3 dB
    Minimum Mixer LO Power -20 dBm
    Mixer Programmable Step Attenuator 0 to 81 dB, steps of 1 dB
    Mixer Conversion Efficiency > 10 dB
    Mixer Compression > -24 dBm
    Mixer Sensitivity (PNA, IF BW=1000) < -110 dBm
    Mixer Isolation, Ref to Test Channel > 100 dB
    RF Switch Isolation 90 dB
    RF Switching Time 15 ms
    RF Switch Cycles 5 million
    TRU Response Time (typ) 40 ms
    RF Connectors SMA female (2.9 or 2.4 for Mpy modules)

    Module Size (HxWxD)

    		10" x 1.5" x 12.0"
    Module Weight ~15 lbs

    TRU Size (3 module unit, HxWxD)

    		7 " x 19" x 15.0"
    TRU Weight (3 module unit) ~30 lbs
    TRU Power (24V power adapter included) 4.2 A @ 24 VDC
    Controls and Indicators DC power and error LED on each module

    ORDERING INFORMATION

    Contact the NSI Sales Department to configure a TRU system to meet your automation needs.

    Nearfield Systems, Incorporated
    19730 Magellan Drive,     Torrance, CA 90502, USA, Tel: 310.525.7000, Fax: 310.525.7102
    Email: sales@nearfield.com. Visit our website: www.nearfield.com