Pendulum CNT-90 Getting Started Manual Download Page 6

Chapter 3

Operating the Counter

Introduction

While  this  counter  has  a  vast  array  of  features  and operating 

modes, the majority of the most useful functions can be learned 

in just a few minutes. The following descriptions and exercises 

will help you grasp the basics of operation. They will also serve 

as an introduction to  some  of  the  more  advanced  features.  It 

will take you about half an hour to gather experience enough to 

continue exploring the world of counting on your own.

User Interface

The  fundamental  idea  has  been  to  facilitate  even  complex 

measurements  by  a  consistent  interactive  user  interface  that 

fully exploits the large graphic display. The casual as well as the 

frequent user will benefit from a combination of hard and soft 

keys. In this context hard keys either act immediately or open 

fixed menus, whereas the function of soft keys depends on the 

display information.

Getting Familiar with the 

Counter

The front panel is laid out in a logical fashion. Take a few seconds 

to find the sections described below on the front panel of your 

counter. See also the figure on this page. It will help you locate 

the different keys faster.

6

Summary of Contents for CNT-90

Page 1: ...rch 2020 Timer Counter Analyzer CNT 90 CNT 91 CNT 90 AN Frequency Calibrator Analyzer CNT 91R Microwave Counter Analyzer CNT 90XL Reproduction and distribution of this technical manual is authorized f...

Page 2: ...cription of Keys 3 3 Power 3 3 Select Function 3 3 Autoset Preset 3 3 Move Cursor 3 3 Enter 3 3 Exit OK 3 3 Cancel 3 3 Presentation Modes 3 4 VALUE 3 4 STAT PLOT 3 4 Remote 3 5 Hard Menu Keys 3 5 Inpu...

Page 3: ...al To ensure the correct and safe operation ofthe instrument it is essential that you follow generally accepted safety procedures in addition to the safety precautions specified in this manual The ins...

Page 4: ...available line voltage Fuse The secondary supply voltages are electronically protected against overload or short circuit The primary line voltage side is protected by a fuse located in the power suppl...

Page 5: ...Connector The address is set from the User Options Menu USB Connector A serial interface according to USB 2 0 12 Mb s provides a fast communication link to your PC Optional Main Input Connectors This...

Page 6: ...urown User Interface The fundamental idea has been to facilitate even complex measurements by a consistent interactive user interface that fully exploits the large graphic display The casual as well a...

Page 7: ...ress this key Exit OK This hard key performs the Save Exit operation Youwill confirm your selections by depressing the key and at the same time you will exit the current level and enter the next highe...

Page 8: ...or DC Impedance 50 Q or 1 MQ Attenuation 1x or 10x Trigger Manual or Auto always Auto 10 90 when measuring transition times Trigger Level If Manual has been selected the absolute level can be adjuste...

Page 9: ...measurement will stay on screen indefinitely A pending bus query will also wait indefinitely for a response unless the test system controller has enabled its own timeout Timeout Time Set the maximum t...

Page 10: ...e result will remain on the display until a new measurement is triggered by pressing the RESTART key The HOLD sign in the upper right corner of the screen indicates that no new measurements are taking...

Page 11: ...e measurement itself This is known asoffsetting In the following the direct unscaled result of the counter s measurement process will be referred to as X To set up the counter to display any deviation...

Page 12: ...NEG depending on whether you want to measure the positive or the negative pulse width Finish by selecting the input channel Jitter Measurements Statistics You can make statistical measurements such a...

Page 13: ...Phase Arel B benefit from having fixed trigger levels This is because a change in trigger level causes a change in the measured phase shift and Auto might change the trigger level between measurements...

Page 14: ...ance 1 s Activate the time out function by toggling the soft key Timeout to ON Disconnect the signal and check that the counter shows after one second Keep in mind that the value you select for this t...

Page 15: ...m UNITED STATES phone 1 866 644 1230 us office pendulum instruments com POLAND phone 48 58 681 8901 info pendulum instruments com Pendulum Instruments 2021 March 06 2020 CNT 90 Series rev 1 Specificat...

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