Applications; Electronic Measurements; Frequency Response Measurements Of Four Terminal Networks - BRUEL & KJAER 1013 Instructions And Applications

5.
Applications
ELECTRONIC MEASUREMENTS
Frequency Response Measurement of Four-Terminal Networks.
The object to be tested, for example a filter, transmission line, transformer,
etc. is fed directly from the Beat Frequency Oscillator Type 1013.
Point-by-point measurements can now be taken by means of the Microphone
Amplifier Type 2604 or the Voltmeter Type 2409. However, if automatic
recording of the frequency response is desired, the Automatic Frequency
Response Recorder Type 3306 can be used.
Due to the low output impedance in the 6 ohm position of the MATCHING
IMPEDANCE switch, the output voltage of the Oscillator will normally be
~
=-
3306
Object
under
test
16f76£J
Fig. 5.1. Measuring arrangement for automatic recording of the frequency
response of four-terminal networks. The combined BFO and Level Recorder
Type 2305, i.e. ((Automatic Frequency Response Recorder" Type 3306 is used.
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