User`s guide
  Gyro Control Unit (GCU)     
  User’s Guide 
    3 
  MaxMetrix, Scottsdale, AZ   
PN: GCU-2K1-UG:RevI.2 NGC 
4.1.2.4  Number of Samples ........................................................................................................21 
4.1.2.5  Start | Stop .......................................................................................................................22 
4.1.2.6  Connect | Disconnect ......................................................................................................22 
4.1.3  The Spectrum Analyzer .......................................................................................................23 
4.1.3.1  DATA SELECT ..............................................................................................................24 
4.1.3.2  Auto-Y ............................................................................................................................24 
4.1.3.3  PSDE...............................................................................................................................24 
4.1.3.4  Peak Hold Enable ............................................................................................................24 
4.1.3.5  Frequency Range ............................................................................................................25 
4.1.3.6  Start | Stop .......................................................................................................................25 
4.1.4  The Bode Analyzer..............................................................................................................26 
4.1.4.1  How it works ...................................................................................................................27 
4.1.4.2  Axis .................................................................................................................................28 
4.1.4.3  Trace Color .....................................................................................................................28 
4.1.4.4  Parameters .......................................................................................................................28 
4.1.4.4.1  Start Frequency ........................................................................................................28 
4.1.4.4.2  Stop Frequency.........................................................................................................28 
4.1.4.4.3  Excitation Amplitude ...............................................................................................28 
4.1.4.4.4  Sample Rate .............................................................................................................28 
4.1.4.4.5  Duration ...................................................................................................................28 
4.1.4.5  Start | Stop .......................................................................................................................28 
4.1.5  Notch Filter Adjustments ....................................................................................................29 
4.1.5.1  Write to DSP ...................................................................................................................29 
4.1.6  Firmware Loader .................................................................................................................31 
4.1.6.1  Browse ............................................................................................................................31 
4.1.6.2  Load ................................................................................................................................32 
4.1.6.3  NO-OP ............................................................................................................................33 
4.1.6.4  DSP Entry Point ..............................................................................................................33 
4.1.6.5  Autoboot Enable .............................................................................................................33 
4.1.6.6  Firmware Release Level .................................................................................................33 
4.1.6.7  Troubleshooting the LINK ..............................................................................................33 
4.1.7  Manufacturing Report .........................................................................................................34 
4.2  Parameter Buttons and Storage .......................................................................................................36 
5  SOFTWARE LICENSE .......................................................................................................................37 
6  FAQ and Technical Support ................................................................................................................39 
6.1  Gyro Setup Software does not respond to commands .....................................................................39 
6.2  G-2000 Gyro is unstable after power is applied ..............................................................................39 
6.3  Gyro not Caging ..............................................................................................................................39 
6.4  Mechanical Dimensions ..................................................................................................................41 
6.5  Electrical Specifications ..................................................................................................................41 
6.6  Environmental Specification ...........................................................................................................41 
FIGURES 
Figure 1 GCU2K1, Gyro Control Unit (GCU)
  ............................................................................................... 5
Figure 2 GCU, Block Diagram
  ....................................................................................................................... 6
Figure 3 GCU 3-Dimensional Model
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