Maico MA 50, Руководство по эксплуатации

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Operating Instructions MA 50
Geba_MA50_Fe_11a.doc 1 851 406/2 11/11
Table of Contents Page
1 Introduction ............................................................................................... 3
2 Description ................................................................................................ 4
3 Getting started .......................................................................................... 5
3.1 Unpacking your instrument ..................................................................... 5
3.3 Getting familiar with the MA 50 ............................................................. 7
3.3.1 Using the keyboard of the MA 50 ........................................................ 8
3.3.2 The display of the MA 50 ..................................................................... 8
4 Pure tone audiometry ................................................................................ 9
4.1 Air Conduction (AC) Testing ................................................................... 9
4.2 Uncomfortable Hearing Level (UCL) Testing ............................................10
4.3 Bone Conduction (BC) Testing ...............................................................11
4.4 Masking of the opposite ear ................................................................11
4.4.1 Crossover: .......................................................................................11
4.4.2 Masking theory: ..............................................................................12
4.4.3 Manual masking: ............................................................................12
4.4.4 Automatic masking: ........................................................................13
5 Quick reference guide ...............................................................................14
5.1 Startup settings .....................................................................................14
5.2 Receiver selection ..................................................................................14
5.3 Frequency selection ...............................................................................14
5.4 Warble tone (FM) ...................................................................................14
5.5 Pulse tone ..............................................................................................14
5.6 Test channel selection ............................................................................14