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OPERATION
• EXTERNAL SYNCHRONIZING INPUT
By applying an external sinewave signal to EXT SYNC in BNC @, the oscillating frequency of
AO- 3001 C can be synchronized to the external signal. The synchronizing range is increased
in proportion as the input voltage is increased as shown in FIG. (4)., indicating that the
synchronizing range is about
±
1% per input voltage of 1 V.
EXAMPLE : Suppose that the input signal voltage is 1 Vrms and the oscillating frequency of
AO- 3001 Cis between 990Hz to 101OHz (1KHz
±
1KHz x 1 %/V x 1 V =1KHz
±
1KHz x 0.01 ), the frequency can be synchronized with 1KHz of input signal.
NOTE
Never apply an external voltage of 1 OV or more (peak value of AC and DC)
to the EXT SYNC.IN BNC.It will be affect the amplitute and distortion
factor. Also, note that if the synchronizing signal is largely deviated from the
frequency of A0-3001 C, the synchronization in pulled out which affects
the distortion factor, it is therefore advisable that the oscillating frequency
be first synchronized with a low input signal voltage (less than 1 Vrms)and
then the voltage be increased.
Synchronizing range
0.0&
+6
Output signal distortion
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......
0.06
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EXT. SYNC. input voltage
EXT. SYNC. INPUT VOLT AGE
FIG. (4).EXT. SYNC. INPUT V. S FREQUENCY DEVIATION AND DISTORTION
11
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