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TEST EQUIPMENT PLUS

Signal Hound USB-SA124A

User Manual

TEST EQUIPMENT PLUS

Signal Hound USB-SA124A User Manual

 2011, Test Equipment Plus 35707 NE 86th Ave Phone (360) 263-5006 • Fax (360) 263-5007

Version 2.13A

T able of Contents
1 1.1 PREPARING FOR USE ............................. 1 Initial Inspection ............................................... 2 3.1.4 3.1.5 3.1.6Measuring Low Level Signals .................17 Measurements Near DANL ...................17 Capturing Pulsed or Intermittent Signals 17

3.2 Viewing Modulation........................................17 3.2.1 Capturing Pulses in Zero Span .................18 3.3 3.4 Measuring Channel Power.............................19 Understanding Your Signal Hound..............19 Measuring Harmonics....................................20 Measuring Phase Noise...................................20

1.2 Software Installation ........................................ 2 1.2.1 System Requirements................................. 2 1.2.2 Install the Signal Hound Software............. 2 1.3 2 2.1 Running the software for the first time ......... 2

3.5 GETTING STARTED.................................. 43.6 The Graticule ..................................................... 4

2.2 The Control Panel............................................. 5 2.2.1 FREQUENCY CONTROLS ..................... 6 2.2.2 SPAN CONTROLS.................................... 6 2.2.3 AMPLITUDE CONTROLS ...................... 6 2.2.4 MARKER CONTROLS ............................ 6 2.2.5 BANDWIDTHCONTROLS..................... 7 2.2.6 TRACE CONTROLS................................. 8 2.2.7 TRIGGER AND SWEEP CONTROLS ... 8 2.2.8 ADDITIONAL CONTROLS .................... 9 2.2.9 TRACKING GENERATOR CONTROLS9 2.3 The Menu ........................................................... 9 2.3.1 FILE............................................................. 9 2.3.2 EDIT..........................................................10 2.3.3 VIEW ........................................................ 10 2.3.4 PRESETS .................................................. 10 2.3.5 SETTINGS................................................ 10 2.3.6 TRACE...................................................... 11 2.3.7 Utilities...................................................... 11 2.3.8 HELP......................................................... 13 2.4 2.5 The Status Bar ................................................. 13

Using the Measuring Receiver Utility ..........21 3.7 Audio Analysis Controls ..........................21 3.7.1 3.7.2 The Analyzer Data Window.....................22 3.8 EMC Measurements .......................................23

3.9 Limitations of the Signal Hound ...................23 3.9.1RBW Limitations ......................................23 3.9.2 IF Feed-Through .......................................23 3.9.3 LO Leakage ...............................................23 3.9.4 Sweep Time...............................................23 4 4.1.1 4.1.2 4.1.3 4.1.4 4.1.5 4.1.6 4.2 ADDITIONAL FEATURES ....................... 25 Save / Recall State ....................................25Printing ......................................................25 Listening to Demodulated Audio.............26 Using an External Timebase ....................26 Using an External Trigger ........................26 Using Sync Out .........................................27 Using Limit Lines ............................................27

5 The USB-SA124A Front & Rear Panels ..... 14

3TAKING MEASUREMENTS .................... 15

THEORY OF OPERATION ...................... 28 5.1.1 The Four Sweep Modes............................28 5.1.2 Reducing Spurious and Residual Responses...................................................................28 5.1.3 IF-to-Bits Receiver....................................29 5.1.4 IF and RBW Selection ..............................29

3.1...