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ATS-5X User Manual

 

Page 24 of 44 

 

Figure 32 – Level/Freq/Noise Frequency Recording 

 

2.7.2

 

Impulse Noise 

2.7.2.1

 

Overview 

The impulse noise measurement counts the number of times that receive signal level momentarily exceeds a selectable 
threshold.  The measurement is run for a predetermined amount of time and may be run in the presence of a 

holding 

tone

.  A holding tone is any single tone with frequency between 950 Hz and 1050 Hz and with level at least -40 dBm. 

The  receive  signal  is  filtered  according  to  the 

Setup

  screen  selection  before  the  signal  level  is  compared  with  the 

threshold.  If a holding tone is present, the receive signal is also passed through a 1010 Hz notch filter before the level 
threshold comparison is made.  There is a maximum impulse count rate of 1 pulse every 100 ms. 
If an impulse noise test is started and there is no valid holding tone present, impulses exceeding the threshold will be 
counted for the remainder of the test.  However, at a point when a valid holding tone is detected, impulses exceeding 
the threshold will only be counted if a valid holding tone is present, from that point to the end of the test. 
A  sensitivity  selection  is  required  before  starting  the  test.    The  higher  sensitivity  setting  allows  greater  threshold 
accuracy  for  low-level  signals,  but  will  operate  correctly  for  large  holding  tones.    The  lower  sensitivity  setting  has 
reduced accuracy for low-level signals but will permit holding tones up to the maximum receiver level. 

2.7.2.2

 

Setup 

There are no restrictions on the line interface setup for this measurement. 
The following transmit modes are permitted for this measurement: 

 

Off 

 

1004 Hz 

 

Single Tone 

2.7.2.3

 

Measurements and Controls 

The measurements or displays on the screen are described below: 

 

Test Status

: 

The present operational status of the impulse noise test.   The following display values are 
possible: 

o

 

Running: 

A test is currently in progress 

o

 

Stopped: 

A test has been aborted 

o

 

Completed:  A test has run for the specified duration 

 

Impulse Count

: 

The total number of times that the receive level exceeded the threshold value while the test 
is  running.    When  a  test  is  not  running,  the  total  impulse  count  of  the  previous  test  is 
displayed, if the test was run. 

Содержание ATS-5X

Страница 1: ...Copyright 2015 Rev 04 15 ATS 5X User Manual Networked Communication Solutions LLC Electrodata Inc ...

Страница 2: ...13 2 5 1 Start up Screen 13 2 5 2 Main Menu 13 2 5 3 Preferences 13 2 5 4 Date Time 14 2 5 5 Setup 15 2 5 6 Self Test 18 2 6 Equipment Connection 19 2 6 1 Longitudinal Balance 19 2 6 2 Delay Emulation 20 2 7 Measurements and Functions 21 2 7 1 Level Frequency Noise 21 2 7 2 Impulse Noise 24 2 7 3 Longitudinal Balance 25 2 7 4 Dialer 27 2 7 5 Delay Emulator 4 Wire 30 2 7 6 Echo Measurement 31 2 7 7...

Страница 3: ...cuits in leased and dial up networks Figure 1 below shows an image of the product in operation The following measurements and functions are provided Level frequency and noise Impulse noise Longitudinal balance 23 tone Slope DTMF capture and dial interface Spectrum display Delay emulation Echo measurement Peak to average ratio Figure 1 ATS 5X Product Overview ...

Страница 4: ...how the start up screen If the self test passes the display will show the Main Menu screen and the device is ready for use 2 2 Battery Operation The ATS 5X has an internal rechargeable battery that is not user replaceable The battery is charged through the 12V power adapter jack on the side of the ATS 5X When the power adapter is powered and plugged into this jack the battery will be charged wheth...

Страница 5: ...ting the mouse scroll wheel will scroll the list Any other mouse button is not a valid input Figure 3 Mouse Icon 2 3 3 Combination Keyboard and Mouse Some USB devices allow both a USB mouse and keyboard on the same connection point such as wireless mice and keyboards These devices are considered valid as long as they are HID type 2 3 4 Drive When a valid USB drive is plugged into the USB port a di...

Страница 6: ...n or USB mouse is straightforward however most actions using the keypad and USB keyboard require a control to be selected first 2 4 1 Title Bar Most screens show a title bar at the top of the screen to show the name of the current screen the state of the battery and the time The state of the battery is indicated by different icons displayed on the left hand side of the title bar These icons are de...

Страница 7: ...andard button on a computer An action is initiated by pressing and releasing touchscreen or USB mouse within the boundary of the button The button action can also be performed by pressing the ENTER key when the button is focused 2 4 3 2 Toggle Control The toggle control allows selecting one action or setting from a collection Each time the toggle control is pressed in the same manner as a button c...

Страница 8: ... UP ARROW and DOWN ARROW keys can be used to change the selected item The selected item in a selection list control is marked with a colored row as shown in Figure 8 Figure 8 Selection List Control 2 4 3 4 Drop Selection List Control The drop selection list control is similar to a selection list control in that it allows selection of a single item out of a vertical list however the list collapses ...

Страница 9: ...USB mouse Once the selection has been made it must be confirmed in order to hide the selection list and perform the associated action or setting change To do this with the keypad or USB keyboard press the ENTER key To confirm the selection with the touchscreen or USB mouse press the item a second time or press somewhere outside of the boundary of the selection list Cancel a selection change by pre...

Страница 10: ...at the location of the cursor If the character to the right of the cursor is a number pressing the UP ARROW and DOWN ARROW keys on a USB keyboard will increment and decrement that digit A text entry control may have limits on the number and type of characters allowed Text entry controls that allow only numbers may be configured to ensure that the number is within maximum and minimum values Pressin...

Страница 11: ...ows visual adjustment of a setting see Figure 14 The slider control cannot be focused and therefore cannot receive keypad or USB keyboard input To adjust the slider setting use the touchscreen or USB mouse to momentarily press within extents of the control to bring the slider set point to the center of the pressed location To continuously adjust the slider set point press and hold within the contr...

Страница 12: ...n and shows the original graph display with the axis limits specified in the Graph Setup screen Select an item in the Previous Views selection list to quickly restore a common display setting Figure 16 Graph Setup Screen 2 4 4 Screen Navigation There are controls on each screen that allow the user to change to other screens For instance most screens have a Back button that returns the display to t...

Страница 13: ... press the Freeze toggle control Press it again to continue to the main screen 2 5 2 Main Menu The Main Menu screen see Figure 17 allows access to each of the measurement functions to the System Menu screen and the Setup screen The 2713 Hz Burst momentary toggle control allows a momentary override of the transmitter setup to transmit a 2713 Hz tone at 0 dBm When the control is active the tone is t...

Страница 14: ...ess level is reduced User interface operation will maintain the display brightness at the set level However after a period of inactivity the display brightness will be reduced User interface operation will again restore the brightness back to the set level This setting may be used to assist in prolonging the battery charge Device Shutoff Time Sets the inactivity duration before the ATS 5X will pow...

Страница 15: ...e 20 and Figure 21 Figure 20 Line Interface Options 4 Wire Configuration Source Z 2 Tx Source Z 2 Termination Z Rx TIP RING TIP RING Interface Bridging Transmitter 4 Wire Off On SETTINGS Transmitter Receiver Source Z 2 Tx Source Z 2 Tx Rx TIP RING TIP RING Interface Bridging Transmitter 4 Wire On On SETTINGS Transmitter Receiver Source Z 2 Source Z 2 Termination Z Rx TIP RING TIP RING Interface Br...

Страница 16: ...receiver has the specified termination impedance o Yes Transmitter when not in use and receiver are high impedance Interface selection o 2 Wire The receiver is connected to the transmit jack tip and ring o 4 Wire The receiver is connected to the receive jack tip and ring Source Z 2 Tx Source Z 2 Rx Interface Bridging Transmitter 2 Wire On of Off On SETTINGS TIP RING Transmitter TIP RING Receiver S...

Страница 17: ... frequency providing at least 50dB attenuation between 995 and 1025 Hz o C msg Notch The combination of a C message filter and a 1010Hz notch filter Level dBm adjustment o Specifies the level of the transmitted signal in dBm Freq Hz adjustment o Specifies the frequency for single tone transmitter selections Start adjustment o Specifies the start frequency in Hertz for a single tone frequency sweep...

Страница 18: ...ests may be skipped to check the operation of certain functions The instructions for each test will be displayed on the screen Respond to each prompt within 1 minute or the self test will be aborted After completion of the self test a summary is displayed showing the results for each of the tests as shown in Figure 23 below If the self test was aborted due to prolonged inactivity the test result w...

Страница 19: ...ould be connected to a potential for which balance is to be measured In most cases this is simply ground or the cable shield For all other ATS 5X measurements the reference jack should not be connected The source impedance of the transmitter is fixed at 365Ω nominal for both the tip and ring connections The longitudinal balance is computed from two separate measurement configurations The first mea...

Страница 20: ...y or echo from a far end device The ATS 5X must be connected in a 4 wire manner in either configuration The repeater configuration is as shown in Figure 26 and the far end configuration is as shown in Figure 27 Figure 26 Delay Emulator Mid Span Repeater Setup TIP RING Transmitter Z Tx Z REF ATS 5X Rx TIP RING Receiver Terminating Equipment Shield or Ground Source Z 2 Tx Source Z 2 TIP RING Transmi...

Страница 21: ...evel The total true RMS 50Hz to 20kHz level of the signal at the receiver after the filter selected in the Setup screen has been applied Notch filtering is ignored Signal Level The level of the largest single sinusoidal tone at the receiver before the selected filter has been applied If there are no significant tones detected the display shows Under 80 0 dBm Bandpath RMS The value of Noise Level r...

Страница 22: ...op of the screen will increase the volume This adjustment is the same as the Audio Volume adjustment in the Setup screen Figure 28 Level Frequency Noise Measurement 2 7 1 4 Tone Sweep Mode If Tone Sweep is selected as the transmitter type in the Setup screen the Level Freq Noise screen displays controls for the tone sweep The Start Sweep and Stop Sweep buttons see Figure 29 can be used to control ...

Страница 23: ...screen to the memory device for each different receive frequency detected see Figure 32 Once started the results capture will continue until the Stop button is pressed The Stop button must be pressed before the memory device is removed from the ATS 5X USB port to ensure that the results are properly saved The status of the results capture is displayed just above the Stop button Unless there is an ...

Страница 24: ... impulses exceeding the threshold will only be counted if a valid holding tone is present from that point to the end of the test A sensitivity selection is required before starting the test The higher sensitivity setting allows greater threshold accuracy for low level signals but will operate correctly for large holding tones The lower sensitivity setting has reduced accuracy for low level signals...

Страница 25: ...dBm Threshold Specifies the counting threshold Momentary signal levels that exceed this threshold will be counted Test Duration The test duration in hours minutes seconds format Back Return to the previous screen Start Begin the impulse noise test This test will continue for the specified test duration or until aborted only while the Impulse Noise screen is active Stop Abort the impulse noise test...

Страница 26: ...quency during a tone sweep This display is only visible when the transmitter has been configured for Tone Sweep and one of the two balance measurements is in progress The screen controls are listed below OK If the step 1 measurement instructions are displayed at the top of the screen this button will begin the step 1 measurement process If the transmitter is configured for Tone Sweep this process ...

Страница 27: ...l button will abort the measurement and discard any partial results The results screen will not display the longitudinal balance measurement results in sweep mode These results must be saved to the USB drive to be viewed on another device The following measurements are recorded when the Save button is pressed Frequency of the transmitter Longitudinal Balance in dB Figure 36 Longitudinal Balance To...

Страница 28: ...e permitted for this measurement Off 1004 Hz Single Tone 23 Tone P AR The Setup screen shows an additional adjustment for the transmit level of DTMF digits DTMF TxLevel dBm see Figure 38 This adjustment specifies the combined DTMF transmit level of both tones of the DTMF digit Figure 38 Dialer Setup 2 7 4 3 Measurement and Controls The following measurements related to captured DTMF digits are dis...

Страница 29: ...creen Setup Show the Setup screen Dial Initiate the dial sequence that was entered in the text entry to the left of the button Once the dialing has been initiated the button text changes to Stop After the dialing has been completed or if the Stop button is pressed the button text reverts to Dial Dial Mode Selects whether the dial sequence will be dialed using DTMF digits or Pulse dialing Dial Sequ...

Страница 30: ...nuation There are no measurements displayed on this screen This function is intended to be used to determine the effect of signal delay on other equipment Figure 40 Delay Emulator Screen 2 7 5 2 Setup The Delay Emulator function configures the line interface of the ATS 5X to be 4 wire fixed as a delayed repeater of the receiver with no filtering As such the Setup screen does not show adjustments f...

Страница 31: ...gnals to pass through with greater accuracy 2 7 6 Echo Measurement 2 7 6 1 Overview The echo measurement Figure 42 provides a method of characterizing the time delay and return amplitude of echoes in a circuit The ATS 5X does this by transmitting a stimulus and measuring the response when the Measure button is pressed the measurement is not made continuously For this reason the echo measurement mu...

Страница 32: ...ulus has been transmitted Return Level The level of the returned echo stimulus relative to the transmitted stimulus More negative numbers indicate less detectable echo Measurement in Progress The percentage progress of a single echo measurement see Figure 44 The following controls are shown on the screen Back Return to the previous screen Measure Initiates an echo measurement Once initiated the me...

Страница 33: ...ext file and picture file of the display 2 7 7 2 Setup There are no restrictions on the line interface setup for this measurement The following transmit modes are permitted for this measurement Off 1004 Hz Single Tone 23 Tone P AR 2 7 7 3 Measurements and Controls The following controls are shown on the screen Back Return to the previous screen Save Store the 23 tone measurement results in text fo...

Страница 34: ...graphical display of the levels of each of the 23 tones Rx Level The combined level of all of the 23 tones S N The ratio between the Rx Level and the noise excluding distortion S IMD 2 The ratio between the Rx Level and the 2nd order inter modulation products within the voice frequency band S IMD 3 The ratio between the Rx Level and the 3rd order inter modulation products within the voice frequenc...

Страница 35: ...value greater than 100 If the peak to average ratio of the receive signal is lower the value will be less than 100 The following controls are shown on the screen Back Return to the previous screen Save Store the P AR measurement and receive level in text format to the USB flash inserted in the ATS 5X USB port If no valid drive is attached a message is displayed to indicate this Setup Show the Setu...

Страница 36: ...f the Setup screen filter selection Receive level at 404 Hz The level of the last 404 Hz tone that was detected The display shows the relative level compared to the Receive level at 1004 Hz Receive level at 2804 Hz The level of the last 2804 Hz tone that was detected The display shows the relative level compared to the Receive level at 1004 Hz The following controls are shown on the screen Back Re...

Страница 37: ...Figure 48 Press the Yes button to continue to the Software Update screen Once this screen is displayed see Figure 49 connect the DC power adapter to the ATS 5X to reduce the likelihood of ATS 5X battery discharge during update Press the I understand begin update button to download the USB drive software file to the ATS 5X Once the download is initiated it cannot be stopped by the user After it com...

Страница 38: ...and 10 kHz 3 elsewhere Source Impedance Settings 600Ω 900Ω Accuracy 5 Flatness 5 Receiver Frequency Range 50 Hz to 20 kHz Resolution 1 Hz Accuracy 1 Hz Receive Level Range 80 dBm to 10 dBm Resolution 0 01 dB Accuracy 0 1 dB at 1004 Hz from 20 dBm to 10 dBm 0 2 dB elsewhere Flatness 0 5 dB Detector DFT Noise Level Range 0 dBrn to 100 dBrn Resolution 0 01 dB Accuracy 2 dB from 0 dBrn to 10 dBrn 1 dB...

Страница 39: ...Inter modulation Distortion Range 100 dB to 100 dB Resolution 0 01 dB Accuracy 0 2 dB Signal to Noise Range 100 dB to 100 dB Resolution 0 01 dB Accuracy 0 2 dB Impulse Noise Filters All settings valid Threshold Level Range 20 dBrn to 100 dBrn Resolution 0 01 dB Accuracy 2 dB from 20 dBrn to 40 dBrn with 15 kHz filter and no filter settings 1 dB elsewhere Impulse Counting Max rate 10 impulses per s...

Страница 40: ...2 dB Freq skew 0 1 Hz On duration 100 1 ms Off duration 50 1 ms Pulse Dialing Off hook time 60 ms On hook time 90 ms Digit gap 800 ms Spectrum Level Range 120 dBm to 10 dBm Resolution 0 01 dB Frequency Range 50 Hz to 20 kHz Resolution 14 Hz Echo Measurement Time Measurement Range 10 ms to 2 sec Resolution 1 ms Accuracy 2 ms Level Measurement Range 60 dB to 60 dB relative to transmit signal at 0 dB...

Страница 41: ...Range 0 to 120 units Resolution 1 unit Accuracy 2 units for receive levels between 30 dBm and 2 dBm 4 units elsewhere Longitudinal Balance Transmitter Level Range 10 dBm Accuracy 0 2 dB Flatness 0 5 dB Source Impedance Magnitude 365Ω tip and ring Receiver Level Range 90 dBm to 10 dBm Resolution 0 01 dB Longitudinal Balance Range 0dB to 120dB Accuracy 1 dB for balance up to 70 dB 3 dB for balance u...

Страница 42: ...fe 6 hours average on full charge for new battery Data Storage USB drive User provided Physical Size Open 11 5 L x 3 9 W x 1 5 H Closed 6 0 L x 3 9 W x 2 7 H Weight 1 6 lbs Environmental Operating 10 C to 55 C Storage 20 C to 80 C Storage temperature should not exceed 50 C for periods more than 1 month Humidity 90 maximum non condensing ...

Страница 43: ...ation DFT Discrete Fourier Transform A method of calculating a frequency spectrum from time domain data DTMF Dual Tone Multiple Frequency Type of signaling digit that is composed of two simultaneous tones HID Human Interface Device This is a popular type of communication standard or device class for USB mouse and keyboard devices Hz Hertz A measure of frequency A 1004 Hz tone is an oscillatory wav...

Страница 44: ...calculations The RMS value for an arbitrary waveform is Where T is usually the length of one period of a periodic waveform Rx Receive Tx Transmit µs µsec Microsecond Measure of time 1 Microsecond 10 6 Second USB Universal Serial Bus A communication standard The ATS 5X uses a USB port to allow communication with devices such as USB keyboards ...

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