| 摘要 |
The invention relates to a test device (1) for frequency modulators (3) with a signal generator (4) which can be connected to the input of the frequency modulator (3) under test and which generates a defined test signal which causes a pre-defined frequency swing in the frequency modulator (3), and with a frequency counter (5 to 14) which can be connected to the output of the frequency modulator (3) and which is coupled with the signal generator (4) in such a way that the frequency of the frequency modulator (3) is measured in a manually selectable segment of the test signal. <IMAGE>
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