Crystal Instruments Spider - Page 7

Spider DSA User’s Manual
7
Introduction ............................................................................................................................. 261
Capabilities of the Spider ......................................................................................................... 261
Applications ............................................................................................................................ 262
Understanding Order Tracking .............................................................................................. 262
Tachometer Processing and RPM Measurement ................................................................... 264
Order Tracks and Order Spectrum ......................................................................................... 266
FFT Spectrum or Constant Bandwidth Spectrum .................................................................. 268
Band RMS Spectrum............................................................................................................... 270
Raw Data Time Streams .......................................................................................................... 272
Phase for Order Tracks ............................................................................................................ 272
The Phase in Rotating Machine Analysis ............................................................................ 272
Bode Plot .............................................................................................................................. 274
Operating Spider System ......................................................................................................... 275
Creating a Test ..................................................................................................................... 276
Recent Test List.................................................................................................................... 279
Signal List ........................................................................................................................... 280
Control Panel ....................................................................................................................... 281
Tachometer Setup ............................................................................................................... 283
Order Analysis Parameters Setup ....................................................................................... 286
FFT Analysis Parameters Setup .......................................................................................... 288
Input Channels Setup ......................................................................................................... 289
Output Channels Setup ....................................................................................................... 289
Measured Signals Setup ....................................................................................................... 291
Time stream Signals ............................................................................................................ 292
RPM Streams ...................................................................................................................... 294
Order Spectra ...................................................................................................................... 295
FFT spectra ......................................................................................................................... 296
Order Tracks ........................................................................................................................ 297
Band RMS Spectra .............................................................................................................. 300
All Signals ........................................................................................................................... 303
Running a test ..................................................................................................................... 304
Display signals .................................................................................................................... 305
3D Signals Display .............................................................................................................. 306
REAL TIME DIGITAL FILTER 310
FIR Real Time Digital Filters ................................................................................................... 312
Data Windows FIR Filters ................................................................................................... 313
Remez Filters ....................................................................................................................... 318