Specifications

1
Model 140
Sound Analyzer
Model 140 Sound Analyzer.................................................................................................3
Specifications ......................................................................................................................4
Model 140 Sound Analyzer - Users' Manual ......................................................................6
A. UNPACKING AND INSTALLATION..................................................................6
B. INTRODUCTION..................................................................................................7
1. Description ..........................................................................................................7
2. Applications Summary........................................................................................7
C. CONTROL FUNCTIONS.......................................................................................9
1. Power...................................................................................................................9
2. Noise Level .........................................................................................................9
3. Noise Output .......................................................................................................9
4. Microphone Input................................................................................................9
5. Line Input............................................................................................................9
6. dB-SPL................................................................................................................9
7. Display (-dB).....................................................................................................10
8. Display Range ...................................................................................................10
9. Overload............................................................................................................10
D. OPERATING INSTRUCTIONS AND APPLICATIONS ...................................11
1. General ..............................................................................................................11
2. Operation From the
"Microphone"
Input........................................................11
3. Operation From the
"Line"
Input.....................................................................12
4. Overload Indicator.............................................................................................12
5. Over-Range on the Display...............................................................................12
6. Equalization of a Sound Reinforcement System...................................................13
7. Adjustment of Masking Noise Systems ............................................................14
8. Rear Panel connections .....................................................................................14
a. LINE AMP IN...............................................................................................14