Pendulum CNT-90 - Frequency & Period; Frequency Ratio F 1 2; Phase; Duty Factor

Specifications
Time Interval Error (TIE) A, B
Normalized Period Back-to-Back measurements,
calculated as:
Ti = individual period back-to-back and
TREF =
reference period value.
Range:
±1x10
7
s
Resolution:
50 ps rms typical
Freq. Range:
1 Hz to 250 MHz
Signal Type:
Clock only
Mode:
Auto or manual freq. set.
Auto Mode:
Measures freq. of the first two
samples, rounded to 4 digits.
■ Display:
Main parameter:
TIE value
Aux. parameter:
Clock signal frequency
Phase A Rel. B, B Rel. A
Range:
-180° to +360°
Resolution:
0.001° to 10 kHz
0.01° to 1 MHz
0.1° to 10 MHz
1° >10 MHz
Resolution can be improved
by averaging (Statistics)
Input Frequency:
Up to 160 MHz
Min. Pulse Width:
1.6 ns
Smart Calculation:
One-pass meas. of time
interval + single period
between two continuous
signals with frequency f
1
&f
2
,
where f
1
/f
2
=N or 1/N. N is an
integer. The meas. is made
with 4 time stamps, 2
consecutive trig. A + two
consecutive trig. B to
determine sign of phase.
■ Display:
Main Parameter:
Phase
Aux. Parameters:
Freq (prim. channel), VA/VB
(in dB), based on
peak-to-peak meas.
Duty Factor A, B
Range:
Input Frequency:
Min. Pulse Width:
0.000001 to 0.999999
0.1 Hz - 200 MHz
2.5 ns
Smart
One-pass meas. of pulse
Calculation:
width + single period, made
with 3 time stamps, 2
consecutive pos trig A + 1
neg trig A.
Modes:
Pos. or neg. duty factor
■ Display:
Main Parameter:
Duty factor
Aux. Parameters:
Period, pulse width
Vmax, Vmin, Vp-p A, B
Alternative data within parentheses refer to in¬put
attenuator setting x10.
Range:
-5 V to +5 V
(-50 V to +50 V)
8-49
USER MANUAL ● CNT 9x Series ● Rev.22 February 2020