User Manual
 vii 
List of Figures 
Figure Title  Page 
1. Test Tool Kit ..........................................................................................................................  6 
2. Battery Charging ...................................................................................................................  7 
3. Power Up/Reset Screen ........................................................................................................  9 
4. Input Connections for Measurement .....................................................................................  11 
5. Tilt Stand and Hanger ...........................................................................................................  12 
6. Auto Set Function ..................................................................................................................  15 
7. Measurement Setup ..............................................................................................................  16 
8.  Correct Grounding Setup .......................................................................................................  17 
9. Temperature and Current Measurement Setup .....................................................................  18 
10. AutoReading Function ...........................................................................................................  20 
11. Waveform Smoothing ............................................................................................................  25 
12.  Bus Health Indicator Boundaries ...........................................................................................  47 
13. WiFi USB Adapter .................................................................................................................  59 
14. 10:1 Scope Probes ................................................................................................................  63 
15.  Max. Input Voltage vs. Frequency for BB120 and STL120-IV ...............................................  85 
16.  Safe Handling: Max. Voltage Between Test Tool Reference and Earth Ground ...................   85 










