Pendulum CNT-90 Series User Manual

Using the Controls
Miscellaneous
Fig. 2-19
CNT-90: The 'Misc' submenu.
Fig. 2-22 CNT-90XL: The 'Input C Acquisition'
submenu.
Fig. 2-20
CNT-90XL: The 'Misc' submenu.
Fig. 2-21
CNT-91(R): The 'Misc' submenu.
The options in this menu are:
•
Smart Measure with submenus:
■ Smart Time Interval (valid only if the
selected measurement function is Time
Interval)
The counter decides by means
of
timestamping which measurement channel
precedes the other.
■ Smart Frequency (valid only If the selected
measurement function is Frequency or
Period Average) By means of continuous
timestamping and regression analysis, the
resolution is increased for measuring times
between 0.2 s and
100 s.
• Input C Acquisition (CNT-90XL only)
Auto
means
that the whole specified frequency range
is scanned for valid input signals.
Manual means that a narrow band around the
manually entered center frequency is monitored
for valid input signals. This mode is compulsory
when measuring burst signals but is also rec-
ommended for FM signals, when the ap-
p
roximate frequency is known. An addit
ional
feature is that the measurement results are
presented much faster, as the acquisition
process is skipped.
NOTE: Signal frequencies outside the manual
capture range may cause erroneous results.
In order to draw the operator's attention
to this
eventuality, the sign "M.ACQ" is visible in the
upper right corner of the display.
•
Auto Trig Low Freq
In a value input menu you can set the lower
frequency limit for automatic triggering and
voltage measurements within the range 1 Hz -
100 kHz. A higher limit means faster settling
time and consequently faster measurements.
•
Timeout
From this submenu you can activate/deactivate
the timeout function and set the maximum time
the instrument will wait for a pending
measurement to finish before outputting a zero
result. The range is 10 ms to 1000 s.
•
Interpolatator Calibration
By switching off the interpolator calibration, you
can increase the measurement speed at the
expense of accuracy.
•
TIE (CNT-91 only)
From a submenu you can either let the counter
choose the reference frequency automatically
(Auto) or enter it manually.
2-14
USER MANUAL ● CNT 9x Series ● Rev.22 February 2020

Pendulum CNT-90 Series Specifications

General

Brand	Pendulum
Model	CNT-90 Series
Category	Measuring Instruments
Language	English