2-15
IM 704610-01E
Explanation of Functions
2
Measurement of the RF Signal Voltage Level and DC Output of the Voltage Level
<<For procedures, see 7.2 section >>
Voltage Level Measurement
RF signals input to the amplitude measurement circuit pass through a filter than removes
noise and overshoot. Next, the A/D converter in the amplitude measurement circuit
measures the maximum and minimum values of the input signal, and the difference
between the two is taken as the RF signal’s voltage level.
Maximum value
Minimum value
Input signal
Filtered waveform
Voltage Level Display
When RF signal voltage measurement is ON, you can switch the display to view the
measured numerical voltage level values on the same display.
DC Output of Voltage Levels
The voltage level of the RF signal can be linearly converted to DC voltage (0 to 5 V) and
output from the voltage level DC output terminal on the rear panel. You can also change
the RF signal voltage level that corresponds to the 0 and 5 V levels.
Voltage Level Determination Output
The upper and lower limits of the determination range can be set according to the RF
signal voltage levels so that 5 VDC is output when the signal falls between the upper and
lower limits, and 0 VDC is output when the upper limit is exceeded or the lower limit is
not reached.
DC Output Filter for Voltage Levels
A moving average can be taken of the RF signal voltage levels. When the DC output
fluctuates due to instability in the RF signal voltage levels, this function suppresses the
degree of fluctuation. You can set the number of measured values (average coefficient)
to be averaged in the range from 1 to 10. The operation is the same as that of the jitter
ratio DC output filter on the previous page.
Monitor Output of RF Signals <<For procedures, see section 7.3>>
You can output the RF signals applied to the measurement input terminal as-is from the
RF signal monitor output terminal on the rear panel.
Monitor Output of Equalized RF Signals <<For procedures, see section 7.3>>
If the equalizer is activated, the equalized RF signal is output. When AGC is ON, the RF
signal passes through the AGC circuit before being output. When AGC is OFF and the
equalizer is not activated, the signal bypasses the AGC and equalizer circuits.
Data Signal Output <<For procedures, see section 7.3>>
You can output the data signal obtained by slicing and binarizing the RF signal from the
data signal output terminal on the rear panel.
Clock Signal Output <<For procedures, see section 7.3>>
You can output the clock signal regenerated by the PLL circuit from the clock signal
output terminal on the rear panel.
2.6 Signal Output