77
Period
Positive pulse width (Pwidth)
Negative pulse width (Nwidth)
e.
Press the RefFreq/TrigLevel to set the reference frequency or to set a trigger level:
Reference Frequency:
The counter will display the deviation in parts per million between the measured
frequency and the reference frequency.
Trigger Level:
Sets the trigger level of the measurement system. The counter triggers and
displays the measurement readings when the input signal reaches the specified
trigger level. The default is 0 V and the available range is from -3 V to 1.5 V.
Choose TrigLev and use the numeric keyboard to input the desired value and
select the unit (V or mV) from the pop-up menu. Alternatively, use the knob and
arrow keys to change the parameter value.
f.
Press the Setup softkey to configure the coupling mode, high frequency rejection or
set the configuration back to default.
Coupling Mode
Sets the coupling mode of the input signal to “AC” or “DC”. The default is “AC”.
HFR
High Frequency Rejection can be used to filter out high-frequency components
of a measured signal and improve the measurement accuracy in low-frequency
signal measurement. Press HFR to enable or disable this function. The default is
“Off”.
o
Enable High Frequency Rejection when 250 kHz or less signals are measured
to filter out unwanted high-frequency interference.
o
Disable High Frequency Rejection when a signal with a frequency higher than
250 KHz is measured. The maximum frequency that can be counted is 200
MHz.
4.4
Output
The 4050B series has output settings that can be configured to either adjust the display to
match the output of the unit to high impedance or 50 Ω, change the polarity of the output, and
set the output phase to be the same for both channels
a.
Press the
Ch1/Ch2
button to toggle between channel 1 and channel 2 to configure
respective output parameters of each channel.
b.
Press the
Utility
button.
c.
Press the Output Setup softkey. The Output options will be displayed on the next
screen:
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