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User’s Manual 

 

 

24 

To set, modify or delete the 

User-ID

, simply place the cursor in the 

User-ID

  box and write a new 

identifier or clear the text. The new identifier is written to the instrument’s memory as soon as 

return

 or 

enter

 is pressed, or if the mouse is left-clicked outside of the box. 

The 

User-ID

 is written to non-volatile memory, so it is retained even in the event of a reset or battery 

failure. 

8.3.4

 

Recording Field 

Note: 

When using the instrument with WiFi™  connectivity, do not use any of the controls in the 

Recording field. The instrument will be completely controlled by the server, including starting the 
recording, erasing memory if required, and resetting the time. 

The recording field has three buttons: 

 

Record

  

The 

Record

  button is used to immediately create a new record and start 

recording. The new record is placed in memory immediately after the last one. The recording 
stops when the memory is full, or when the 

Record

  button is pressed again. The recording 

parameters, such as number and types of values recorded…etc. must be adjusted prior to 
starting the recording. 

 

AutoRec 

The 

Auto-Rec

 button is used to place the instrument in or out of the 

Auto-Rec 

mode. In the 

Auto-Rec

 mode the instrument stays semi-dormant, sampling the acceleration or 

velocity in the background, as long as it does not detect an acceleration or velocity value 
beyond an adjustable threshold. When the signal value goes over the threshold, the instrument 
wakes up and starts recording, using the recording parameters in effect in the instrument’s 
configuration. When the signal value goes and stays below the threshold for a set length of 
time, the recording stops and the instrument goes back to sleep. 
When the 

Auto-Rec

 mode is selected, the instrument will first wait for the signal to rise above 

the set threshold before starting the first recording. The next period of inactivity will stop the 
recording, and so on until the user exits the 

Auto-Rec

 mode, or the memory is exhausted. A 

new record is created every time the threshold is passed and the instrument is not already 
recording.

 

Note: 

The threshold is expressed in 

𝑚

/

𝑠

2

 for acceleration and in 

𝑚

/

𝑠

 for velocity. 

 

Note: 

The threshold 

T

 can only be positive. When recording raw signals or signal statistics 

the recording is triggered as soon as the signal goes higher than 

+T

,  or lower than 

T

. When 

recording RMS levels, the recording is started as soon as the RMS level goes higher than 

+T

RMS

 

Timer   

The 

Timer

  button is used to set a time and date to start the recording 

automatically. This is only allowed when a recording is not already in progress. To set the 
timer, press the 

Timer

 button. Then set the recording date and time, and press the 

OK

 button 

to arm the timer.  The timer will start an immediate recording, or start the 

AutoRec

  mode, 

depending on the settings. 

 

Erase   

The 

Erase

 button erases unconditionally all the data that has been recorded 

in the instrument, making room for new records.

 

The 

Memory Depth

 bar provides two indications: 

 

The percentage of memory already used (indicated by the green bar). The bar is completely 
grey when the memory is empty and completely green when the memory is full. 

Содержание ABC-MEMS

Страница 1: ...ABC MEMS User s Manual October 4 2017...

Страница 2: ...__________________________________________________ 8 6 4 2 Operation LED _____________________________________________________________ 9 6 5 Acceleration Sensor and Signal Processing _________________...

Страница 3: ...esolution ________________________________________________________________ 32 8 5 2 Window __________________________________________________________________ 32 8 5 3 Weighting _______________________...

Страница 4: ..._____________________________ 40 11 TROUBLESHOOTING_______________________________________ 41 11 1 USB Power Limitation _________________________________________________________ 41 11 2 USB Driver Ins...

Страница 5: ...ollowing features 3 Axis integral MEMS accelerometer Measures and records o Raw acceleration or velocity signals o Acceleration or velocity signal statistics o Vibration or velocity RMS levels o Incli...

Страница 6: ...erform the software installation above BEFORE connecting the instrument to the PC for the first time The installer includes a USB driver which is required for the PC to recognize the instrument 4 2 Ha...

Страница 7: ...ure it we suggest to temporarily change the PC s time zone to the time zone where the instrument will be recording let the application set the instrument to the PC s time zone and change the PC s time...

Страница 8: ...al is weak The Instrument_Manager application automatically calculates and displays the cumulative number of days that the battery would last while recording as a function of the instrument settings N...

Страница 9: ...power comes from the internal battery Power consumption depends on the instrument settings and can go from days to months Periodic WiFi Connect From any state including Idle and Recording the instrume...

Страница 10: ...s static DC and dynamic AC acceleration signals with an adjustable sampling rate of up to 4 kHz Velocities are calculated in real time from the acceleration sensor The accelerometer s dynamic range is...

Страница 11: ...is squared to calculate the instantaneous power The instantaneous power is low pass filtered with an adjustable time constant to produce an average A short time constant provides an average that is ca...

Страница 12: ...6 5 3 Low Frequency Limit The low frequency can optionally be limited by the digital high pass filter The cutoff frequency is adjustable and can be adjusted to extremely low frequencies thanks to the...

Страница 13: ...s Filter 6 5 4 Noise 6 5 4 1 Acceleration Noise Figure 6 shows the RMS noise along the three axes as a function of sampling frequency Figure 6 Figure 7 shows the acceleration noise spectrum when the a...

Страница 14: ...frequency of the high pass filter The velocity noise is not significantly influenced by sampling frequency Figure 8 6 5 5 Sensor Dynamic Range The sensor s dynamic range extends from 8 g to 8 g The pr...

Страница 15: ...g The static acceleration along the X and Y axes should be 0g 6 7 Scale The records in a scale that is internal to the instrument All data is re scaled for display as selected by the user whether it i...

Страница 16: ...pped quickly for a time shorter than the log interval before any data had time to be written to memory In that case only the time stamp is written to memory An empty record can also occur when a recor...

Страница 17: ...celeration at the time when AutoRec is started This way it is also possible to trigger a recording when the tilt of the instrument changes by a predefined amount The threshold applies to the RMS level...

Страница 18: ...he Universal Time Code running in the instrument o Delete all data in the instrument s memory all that data has already been safely stored in the recording file on the server o Start a new recording o...

Страница 19: ...n 3 Sampling Frequency Indicator 4 Memory Fill Indicator 5 Timer Button 6 AutoRec Button 7 Record Button 8 Instrument Time Indicator 9 Tab selector 10 Instrument Temperature Indicator 11 Erase Button...

Страница 20: ...le Button 2 Z Axis Recorded Data 3 Pan and Zoom Buttons 4 Y Axis Recorded Data 5 X axis Recorded Data 6 Scale Buttons 7 Record Number Selector 8 Acceleration Inclination Display Mode 9 Data Source 10...

Страница 21: ...User s Manual 20 Figure 11 Spectrum Tab 1 Cursor Zoom and Pan controls 2 Cursor values display 3 Scale buttons 4 Spectrum 5 Cursor 6 Auto scale button 7 Spectral controls 8 Spectrum reset button...

Страница 22: ...User s Manual 21 Figure 12 Static Tab 1 Static axis indicator 2 Static digital display 3 Inclinometer graphic display 4 Inclinometer angle displays...

Страница 23: ...dicator 11 Server Connection Indicator 12 Server IP Address 13 Email Connection Indicator 8 1 Starting the Application Note The application can be run with or without an instrument connected When an i...

Страница 24: ...heck calibration against the acceleration of gravity see Figure 12 The WiFi Tab Is used to display the present connection state of the meter and to setup its connection parameters SSID Security Passwo...

Страница 25: ...rding using the recording parameters in effect in the instrument s configuration When the signal value goes and stays below the threshold for a set length of time the recording stops and the instrumen...

Страница 26: ...the date and time when the recording must start Press the OK button to exit and arm the timer Press the Cancel button or the Window Close button to exit without arming the timer Figure 14 Timer Settin...

Страница 27: ...is only allowed when the instrument is not actively recording Figure 16 Instrument Settings Panel 1 OK button Saves the settings and closes the window 2 Recall button Calls back settings previously sa...

Страница 28: ...w record and starts recording The threshold is the same on all axes Waiting for inactivity While recording the instrument waits for inactivity Inactivity is defined as signal that stays below the thre...

Страница 29: ...When recording RMS level statistics the instantaneous RMS signal is low pass filtered with an adjustable time constant The time constant is only relevant when recording RMS level statistics and is on...

Страница 30: ...wever when operating at low sampling frequencies with a large number of points it may take a long time to fill the buffer for display The bar provides a visual indication that the buffer is filling up...

Страница 31: ...2 File Save Pressing the Save File button saves all the records downloaded from the instrument to a file on the PC In addition to the whole contents of the recording memory the file also contains anci...

Страница 32: ...he following techniques 8 4 5 1 Zoom Controls To the left of each graph is a two button control The left most looks like a magnifying glass It is used to zoom in and zoom out the corresponding graph T...

Страница 33: ...be The actual resolution is chosen as the closest achievable value 8 5 2 Window The type of window chosen has an impact on the spectral resolution The Hanning window is generally a good choice that p...

Страница 34: ...as follows Press on the button that looks like a cross see Figure 11 1 Place the mouse over the point where the X and Y cursor lines meet and left click This grabs the cursor Drag the cursor to the s...

Страница 35: ...est to locate the router or access point close to the instrument so WiFi communications are reliable Note If the Instrument_Listener application is not running on the server the instrument will not be...

Страница 36: ...er 10 min Setting too short an interval lower than 5 min will drain the battery faster Setting too long an interval several days a week or more will risk losing data if the connection cannot be establ...

Страница 37: ...r must be working must be reachable and must be running the Instrument_Listener application 8 7 4 Setting Up the Server to Work in a Local or Wide Area Network Setting up a server to run on the same l...

Страница 38: ...wever a connection schedule does not need to be in effect for the emails to work That router or access point must be connected to the internet The user must have an email account to use for outgoing e...

Страница 39: ...ves to send the alarm 8 7 6 WiFi Battery Drain Connecting to a network drains the battery Even if the instrument is idle if the periodic connection is enabled the instrument will regularly wake up and...

Страница 40: ...nt_Listener application will open multiple ABC_Server windows Figure 20 Instrument_Listener Application Figure 21 ABC_Server Window The ABC_Server window performs the following operations If data is i...

Страница 41: ...serting a small rod into the reset hole and pushing until a slight click is felt There is no risk of losing any recorded data or settings by resetting the instrument However a hardware reset will rese...

Страница 42: ...t_Manager application is unable to communicate with the meter it may be because the USB driver failed to install properly To check the USB driver installation follow the procedure below 1 Disconnect t...

Страница 43: ...and run DDCI_Driver_Install exe This re installs the USB driver 11 3 Connection Problems Failure to communicate with the PC can also be caused by poor USB cable contacts Make sure the USB connector i...

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