
Center Voltage: This is the voltage defined for tuning the VCO to the
center of its tuning curve, or to the carrier frequency desired for the
measurement. The value of the Center Voltage determines the range of
the Tune Voltage possible.
-10 -5 -2 -1-.50 .5 12 5 10
Center Voltage of VCO Tuning Curve (Volts)
Center Voltage + Voltage Tuning Curve < 12V
Figure 3-1. HP 3048A Voltage Tuning Range Limits Relative to
the Center Voltage of the VCO Tuning Curve.
Tune-voltage Rnge: This is the defined Tune Voltage Range through which
the system may tune the VCO around the Center Voltage. The VCO output
must not change in amplitude by greater than 1 dB, exhibit any reversal
in frequency tuning, or be susceptible to damage within the defined Tune
Voltage Range around the Center Voltage.
3-6 Param Summary
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