BRUEL & KJAER 2010 Instructions And Applications page 5

5. DESCRIPTION ....................................... 38
5.1. General ............................ . .......
38
5.2.
Amplifier Section ............................
39
Input Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Output Section ..............................
41
R.M.S. Detection and Averaging .................
42
5.3.
Analyzer Section ............................
46
Fixed Frequency Oscillator ................... .
46
Voltage Controlled Oscillator ................... 48
Frequency Counting and Marking ........... . .... 48
Mixer Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
49
B & T Programmes ........................... 51
5.4. Beat Frequency Oscillator Section, (B.F .0.) ........ 55
5.5.
Automatic Frequency Control, (A.F .C.) ...........
57
6. USE WITH OTHER INSTRUMENTS ...................... 59
6.1.
Level Recorders Type
2305,
and
2307 ............ 59
General ..................................... 59
Linear and Logarithmic Scanning ................ 61
Recording Procedure .........................
61
Control of the Level Recorder
2307
by the
2010 .... 68
6.2.
Tape Recording .............................
68
6.3.
Use with the Heterodyne Slave Filter
2020 ........ 70
General .................................... 70
Remote Control of
2020
when used with the
2010 .. 71
7. APPLICATIONS ...................................... 74
7.1.
Constant and Programmed Bandwidth Analysis .....
74
7.2.
Frequency Response Measurements ..............
76
Frequency Response of a Microphone Probe .......
76
Frequency Response of a Mini-Shaker at low Levels .. 77
7.3. Sound Absorption Measurements ................ 78
8. ACCESSORIES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
8.1.
General ....................................
79
8.2.
Rack Mounting ..............................
79