Pendulum CNT-90 Series User Manual

Using the Controls
•
Trigger Slope: positive or negative, indicated
by corresponding symbols
•
Coupling: AC or DC
•
Impedance: 50  or 1 M
•
Attenuation: 1x or 10x
•
Trigger:
1
Manual or Auto
•
Trigger Level:
2
numerical input via front panel
keyboard. If Auto Trigger is active, you can
change the default trigger level manually as a
percentage of the amplitude.
•
Filter:
3
On or Off
Notes:
1
Always Auto when measuring
risetime or falltime
2
The absolute level can either be
adjusted using the up/down arrow keys
or by pressing ENTER to reach the
numerical input menu.
3
Pressing the corresponding softkey or
ENTER opens the Filter Settings menu.
See Fig. 2-10. You can select a fixed
100 kHz analog filter or an adjustable
digital filter. The equivalent cutoff
frequency is set via the value input
menu that opens if you select Digital LP
Frequency from the menu.
Fig. 2-10
Selecting analog or digital filter.
■ Input B
The settings under Input B are equal to those
under Input A.
■ Settings
This key accesses a host of menus that affect
the measurement. The figure above is valid
after changing the default measuring time to 10
ms.
Fig. 2-11
Meas Time
The main settings menu.
Fig. 2-12
Submenu for entering measuring time.
This value input menu is active if you select a
frequency function. Longer measuring time
means fewer measurements per second and
gives higher resolution.
Burst
Fig. 2-13
Entering burst parameters.
This settings menu is active if the selected
measurement function is BURST - a special
case of FREQUENCY - and facilitates mea-
surements on pulse-modulated signal
s. Both
the carrier frequency and the modulating fre-
quency - the pulse repetition frequency (PRF) -
can be measured, often without the support of
an external arming signal.
2-11
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