Pendulum CNT-90 - Measurement Uncertainties; Random Uncertainties (1Σ); Systematic Uncertainties; Total Uncertainty (2Σ)

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 !/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:
0.000001 to 0.999999
Input Frequency:
0.1 Hz - 200 MHz
Min. Pulse Width:
2.5 ns
Smart Calculation:
One-pass meas. of pulse
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)
8-33
USER MANUAL ● CNT 9x Series ● Rev.22 February 2020