National Instruments SCC-FV01 Скачать руководство пользователя страница 1

USER GUIDE

SCC-FV01 Frequency Input 
Module

The SCC-FV01 frequency input module is a frequency-to-voltage 
converter designed to measure signals from frequency-generating sensors 
and other periodic signal sources. The DC output voltage of the module is 
proportional to the input frequency.

Conventions

The following conventions are used in this guide:

<>

Angle brackets that contain numbers separated by an ellipsis represent a 
range of values associated with a bit or signal name—for example, 
P1.<3..0>.

»

The 

»

 symbol leads you through nested menu items and dialog box options 

to a final action. The sequence 

File»Page Setup»Options

 directs you to 

pull down the 

File

 menu, select the 

Page Setup

 item, and select 

Options

 

from the last dialog box.

This icon denotes a note, which alerts you to important information.

This icon denotes a caution, which advises you of precautions to take to 
avoid injury, data loss, or a system crash.

 

When this symbol is marked on 

the product, refer to the 

Read Me First: Safety and Radio-Frequency 

Interference

 document, shipped with the product, for precautions to take.

When symbol is marked on a product, it denotes a warning advising you to 
take precautions to avoid electrical shock.

When symbol is marked on a product, it denotes a component that may be 
hot. Touching this component may result in bodily injury.

bold

Bold text denotes items that you must select in software, such as menu 
items and dialog box options. Bold text also denotes parameter names.

Содержание SCC-FV01

Страница 1: ...to pull down the File menu select the Page Setup item and select Options from the last dialog box This icon denotes a note which alerts you to important information This icon denotes a caution which a...

Страница 2: ...oth the SC 2345 connector block and the SC 2345 configurable connector SCC SCC refers to any SCC Series signal conditioning module What You Need to Get Started To set up and use the SCC FV01 you need...

Страница 3: ...section For single stage input conditioning plug the SCC FV01 into any socket J X 1 where X is 0 to 7 and connect the input signal wires to the module as described in the Connecting the Input Signals...

Страница 4: ...he input frequency This gives you more accurate measurements of frequencies below 5 Hz with the exception of 0 Hz At 0 Hz there is no ripple therefore there is no special need to acquire and average y...

Страница 5: ...0 Hz Maximum input frequency 100 Hz Minimum input pulse width 5 V pulse train 1 5 s Input impedance Signal threshold 0 V 400 k Signal threshold 0 V 10 M Threshold 0 V Hysteresis 200 mV Transfer Chara...

Страница 6: ...mA Operating voltage accuracy requirements 15 V 10 15 V 10 REF5V 0 05 Physical Dimensions 8 89 cm 2 92 cm 1 85 cm 3 5 in 1 15 in 0 73 in I O connectors One 20 pin right angle male connector one 4 pin...

Страница 7: ...1010 1 Note For UL and other safety certifications refer to the product level or visit ni com hardref nsf search by model number or product line and click the appropriate link in the Certification col...

Страница 8: ...roduct line and click the appropriate link in the Certification column SCC FV01 Module Pin Assignments Figure 1 shows the I O connector pins on the bottom of the module Figure 1 SCC Module Bottom View...

Страница 9: ...X 8 A GND is the reference for the 15 V supplies and REF 5 V AI GND and A GND connect to the SC 2345 at the SCC PWR connector Pins 17 to 20 accept inputs from a first stage SCC module if you are casc...

Страница 10: ...0 Hz signals The output voltage 0 to 10 VDC varies linearly with respect to the input frequency The frequency to voltage and analog circuitry for each channel consists of a triggering stage a frequenc...

Страница 11: ...e hysteresis is fixed at 200 mV This means the amplitude of the input signal must be at least 100 mVpk and the peaks must lie on each side of the 100 mV hysteresis range in order for the signal to be...

Страница 12: ...69B 01 effective input range from 10 V to 20 V and you increase the hysteresis range from 100 mV to 200 mV The SCC AI02 module also provides isolation between the input signal and the DAQ device Frequ...

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