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Source 1 PPS Configuration

Sets the time signal source from either Input 1, Input 2 or RTC.

SOURCE 1PPS CONFIGURATION

RTC

Input1

Input2

100% H

TIME SOURCE

OUTPUT LEVEL

Figure 16: Configuring the 1 PPS Time Source

1. From the SOURCE SIGNAL SELECTION menu screen,

touch the 1 PULSE PER SECOND button.

2. Select the TIME SOURCE button: Input 1, Input 2 or RTC.

3. Touch the

OUTPUT LEVEL

to set the output voltage – see Fig-

ure 17.

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Содержание 940A

Страница 1: ...MODEL 940A TIMING SYSTEM ANALYZER USER S MANUAL Arbiter Systems Inc Paso Robles CA 93446 U S A FONKEL MEXICANA Tel 55 55336114 informes fonkel com mx www fonkel com mx ...

Страница 2: ...nvenience of Ar biter Systems Reasonable effort was made to verify that all con tents were accurate as of the time of publication Check with Ar biter Systems at the address below for any revisions made since the original date of publication found on page v ii ...

Страница 3: ...ay all shipping charges to Arbiter Systems and Arbiter Systems shall pay shipping charges via ground incurred in returning the product to Buyer However Buyer shall pay all shipping charges duties and taxes for products returned to Buyer in a country other than the United States of America THE WARRANTY SET FORTH HEREIN CONSTITUTES THE ONLY WARRANTY OBLIGATIONS OF ARBITER SYSTEMS EXPRESSED OR IMPLIE...

Страница 4: ...PLEASE PROCEED AS FOLLOWS 1 Notify Arbiter Systems Inc specifying the instrument model number and serial number and giving full details of the dif ficulty Service data or instrument return authorization will be provided upon receipt of this information 2 If instrument return is authorized forward prepaid to the manufacturer If it is determined that the instrument is not covered by this warranty an...

Страница 5: ...ng Timecodes Specifications 940A Utility Software Appendix A IRIG B Information Copyright Arbiter Systems Incorporated June 2017 All rights reserved International copyright secured PD0054700 Revision A A pdf version of this manual is available for download at www arbiter com To reorder the printed manual contact Arbiter Sales and order Part No AS0106800 v ...

Страница 6: ...ting with Power Supply Charger 3 Powering ON or OFF 3 Battery Indication 3 Model 940A Accessories 4 Connecting Time Signals 5 Coaxial Cable 5 Twisted Pair Cable 6 Setup Screens 7 Buttons Screens 7 The Home Screen 7 Navigating the Menus 8 The Home Button 8 Gear Button 8 Return Button 8 Pause Button 8 Play Button 8 Slider Bar 8 Configuring Input 1 9 Configuring Input 2 9 vi ...

Страница 7: ...atio 19 Source 1 PPS Configuration 20 1 PPS Source Output Level 21 DCF77 Source Configuration 22 System Configuration 23 System Menu Notes 24 Manually Setting the RTC 25 Viewing Timecodes 26 DISPLAY Functions 26 Waveform Comparisons 27 Unmodulated IRIG B 28 Modulated IRIG B 30 Input 1 PPS Timing 31 Source 1 PPS Timing 32 DCF77 Timing 33 Specifications 35 The 940A Utility 37 Updating Firmware 37 Fi...

Страница 8: ... Source Voltage 17 13 Modulated IRIG Source Output Level 18 14 Adjust the Source AC Voltage 18 15 Adjust the Source AC Modulation Ratio 19 16 Configuring the 1 PPS Time Source 20 17 Configuring the 1 PPS Output 21 18 Adjusting the 1 PPS Voltage 21 19 Configuring the DCF77 Output 22 20 System Configuration 23 21 Set Real Time Clock Screen 25 22 DISPLAY on the Home Screen 26 23 1 PPS IRIG B Waveform...

Страница 9: ...30 DCF77 Signal Elements 34 31 940A Utility Opening 37 32 Selecting COM Port 38 33 940A Utility Reading Serial Number 38 34 940A Firmware Ready to Upload 39 35 940A Upload Progress 39 ix ...

Страница 10: ...x ...

Страница 11: ...apters to match a variety of wire types and connectors The 940A features two timing input ports one timing source output port a mini USB charging port variable output flashlight speaker and auxiliary port Available input signals are unmodulated IRIG B modulated IRIG B IRIG B Manchester 1 Pulse Per Second and DCF77 Three different load conditions are available which are Load Off 100 Ohm Load and 50...

Страница 12: ...lity and easy handling It has a 5 inch diagonal color graphic touch screen display made of tempered scratch resistant glass with self adjusting brightness controls A bail assembly is useful for propping up the instrument Input and output connections are through female BNC connectors Input Output Connectors Two female BNC connectors are available for connecting two differ ent input signals One fema...

Страница 13: ...the flash light and the speaker switched off Operating with Power Supply Charger With the included power adapter charger connected the 940A should operate indefinitely Powering ON or OFF Press the ON OFF button at the bottom of the front panel to energize and de energize the 940A Battery Indication 100 Charged not connected to charger 52 H Charging High connected to charger 15 Battery very low con...

Страница 14: ...BNC Barrel F F CN0003400 BNC Breakout F to Wires AP0008900 BNC Adapt M to 2 Pos Term AP0014900 BNC M to 2 Screw Term AP0015000 USB 2 1A Wall Charger AP0015300 Quick Setup Guide PD0055400 940A Printed Operation Manual AS0106800 USB 2 0A Male to Micro Cable CA0033700 BNC Coax Cable M M CA0033808 BNC T Conn F M F CN0003500 Terminal Block Plug 2 Pin CN0019202 Case Soft 940A HD0068600 Table 1 940A Acce...

Страница 15: ...utput USB charging firmware update Input 2 Input 1 Flashlight Speaker under bail assembly Bail Auxiliary I O Port Figure 1 940A Connections and Features The source BNC connector is seen on the right the two input BNC connectors are on the left A micro USB is between the Input 2 and AUX I O port and a flashlight is located above the micro USB port Coaxial Cable Input and output timing connectors on...

Страница 16: ...e Model 940A use a BNC breakout as pictured in Figure 2 Figure 2 Male BNC Breakout with Terminals Connecting Connect the breakout s male BNC connector to the 940A then at tach the twisted pair of wires to the breakout terminals and tighten the screws Make sure to observe the polarity marking on the breakout Do not tin stranded wire with solder 6 ...

Страница 17: ...Home screen From the Home screen you can configure Input 1 and 2 the Source signal output and System parameters which include flashlight brightness speaker volume display back light and Real Time Clock RTC You only need to touch the screen buttons to make choices When first powering on the 940A it should display a startup message as seen on page i and then display the home screen as seen above 7 ...

Страница 18: ...rther configuration is possible or needed It only appears when selecting a specific signal but not if selecting DISABLED Return Button is normally found in the lower right corner of the display Touch the return button to go back to the previous menu Pause Button is used to freeze the display when viewing a timing signal to capture the various bits for longer viewing Play Button is used to resume s...

Страница 19: ...want to test to Input 1 3 In the Home screen CONFIGURATION menu touch INPUT 1 4 In INPUT 1 CONFIGURATION display see Figure 4 touch the desired signal For example IRIG B UNMODULATED 5 Touch one of the Load configuration buttons such as Load Off 6 Touch the Compensate for 1 Second Delay if required Keeps the 940A time in sync with source 7 Touch when finished Configuring Input 2 From the Home scree...

Страница 20: ... signal 6 Press either to zoom in or out in the display 7 Touch and slide to view other sections of the IRIG B signal INPUT 1 IRIG B UNMODULATED Time 00 55 46 UTC Date 01 JUL 2015 DOY 182 SBS 3346 Time Offset 0 TQ Locked CTQ 100ns LSP 0 LSD 0 DSP 0 DST 0 PARITY EVEN Jitter 0 47 uS 0 1 RMS In1 In2 Delta T uSecs Amplitude 4 1 Volts Year 15 Offset 0 TQ 6 20 40 80 P6 LSP DSP DST SIGN 1 2 4 8 LSD 56 57...

Страница 21: ...onfiguration Screen 1 In the Home screen CONFIGURATION menu touch SOURCE 2 In SOURCE SIGNAL SELECTION menu touch desired sig nal for example IRIG B UNMODULATED 3 Touch to configure other time settings then touch to return to the SOURCE SIGNAL SELECTION menu 4 Touch to return to the Home screen Once selected the 940A produces the timing signal at source connector When DISABLED the 940A will not dis...

Страница 22: ...ted IRIG B 1 Touch the Input 1 Input 2 or Custom buttons to select the signal source to transmit IRIG B from the Source BNC connector 2 Touch the Duplicate Input button if you want to exactly re produce at the source the signal connected to Input 1 or 2 3 If wanting to set to a custom time and date touch Custom then the Time Date bar next to it see page 13 to set the date and time 4 Select the tim...

Страница 23: ...re 8 Set Custom Time Screen Figure 8 illustrates the Custom Time window which provides a method to manually set the source date and time 1 Touch the up or down arrows for each item of date and time 2 Touch SET TIME after setting the time and date 3 Touch SET FROM RTC to set the custom clock from the Real Time Clock 4 Touch CANCEL to escape from this menu 13 ...

Страница 24: ...16 44 10 Change Over Month Change Over Time 100 H Figure 9 Configuring the Source IRIG B Bits 1 Start from the configuration steps on page 12 2 Touch IRIG BITS to open the CONFIGURE SOURCE IRIG BITS menu as seen in Figure 9 3 Make any changes to Time Quality Leap Seconds and Day light Saving Time selections 4 Touch to return to the SOURCE IRIG CONFIGURA TION menu NOTE Changing any of these bits do...

Страница 25: ... 2017 2 00 00 100 H Figure 10 Setting the DST Clock 1 Touch the Change Over Time bar as seen at the bottom of Figure 9 2 From Figure 10 touch either the UP or DOWN arrows for Month Day Year Hour Minute and Second 3 When the preferred date and time is selected touch SET TIME 4 To set the changeover time from the Real Time Clock touch SET FROM RTC 5 To return without applying anything touch CANCEL 1...

Страница 26: ... 5V Vdc 5 100 H Figure 11 Configuring the Source Output Level 1 From the SOURCE IRIG CONFIGURATION menu screen touch OUTPUT LEVEL to open the SOURCE OUTPUT LEVEL menu screen 2 Touch one of the three selection buttons 3 If selecting Variable touch the voltage button to open the voltage adjustment screen see Figure 12 4 Touch to go back to the SOURCE IRIG CONFIGURA TION menu 16 ...

Страница 27: ...tude SAVE CANCEL Volts 5 100 H Figure 12 Adjust the Source Voltage 1 Touch the UP and DOWN arrows to adjust the IRIG B un modulated voltage level to your desired level Voltage range is from 1 to 15 Volts with 50 ohm source impedance 2 Touch SAVE to save the selected output voltage 3 Touch CANCEL to return to the previous screen without changing anything 17 ...

Страница 28: ...RIG Source Output Level 1 From the SOURCE IRIG CONFIGURATION menu screen touch OUTPUT LEVEL to open the SOURCE OUTPUT LEVEL menu screen 2 Touch Variable button to open the voltage adjustment screen see Figure 14 Voltage range is 1 to 10 V Touch the arrows to adjust then SAVE SOURCE OUTPUT LEVEL Edit AC Amplitude SAVE CANCEL Volts 5 100 H Figure 14 Adjust the Source AC Voltage 18 ...

Страница 29: ...select the desired ratio includes 2 1 3 1 10 3 4 1 5 1 6 1 and 7 1 Note for higher modulation ratios e g 4 1 and higher the Source Output Level may need to be adjusted higher 2 In the SOURCE OUTPUT LEVEL Edit Modulation Ratio screen touch the UP or DOWN buttons to set the modula tion ratio 3 Touch SAVE to store the new voltage and return to the previous menu screen 4 Touch CANCEL to return to the ...

Страница 30: ...GURATION RTC Input1 Input2 100 H TIME SOURCE OUTPUT LEVEL Figure 16 Configuring the 1 PPS Time Source 1 From the SOURCE SIGNAL SELECTION menu screen touch the 1 PULSE PER SECOND button 2 Select the TIME SOURCE button Input 1 Input 2 or RTC 3 Touch the OUTPUT LEVEL to set the output voltage see Fig ure 17 20 ...

Страница 31: ...ure 17 Configuring the 1 PPS Output 1 Touch the Variable 50 Ohm Source to open the SOURCE OUTPUT LEVEL adjustment screen See Figure 18 2 Touch the UP or DOWN arrows to choose the desired voltage level 1 Vpeak to 15 Vpeak 3 Touch SAVE or CANCEL when finished SOURCE OUTPUT LEVEL Edit AC Amplitude SAVE CANCEL Volts 5 100 H Figure 18 Adjusting the 1 PPS Voltage 21 ...

Страница 32: ...Output 1 From the SOURCE SIGNAL SELECTION screen see Fig ure 6 touch the DCF77 button 2 Touch one of the TIME SOURCE selections 3 To configure a custom time touch CUSTOM then touch the start time bar to adjust the date and time 4 Configure UTC or your time zone button 5 Configure leap seconds if required The Leap Second Pend ing bit LSP will change one hour prior to the addition or subtraction of ...

Страница 33: ...Touch the Flashlight On button if desired Deselect button if not wanting the flashlight Touch the brightness bar to adjust the flashlight brightness 3 Touch the Speaker Volume On button if desired and adjust the volume with the slider 4 Adjust the Backlight brightness manually or use the Auto setting Backlight slider does not function when Auto is se lected 5 For Real Time Clock Date Time setting ...

Страница 34: ...o selected the back light is automatically adjusted for the ambient light With Auto not selected the slider manually controls the backlight brightness The backlight uses the most power from the batteries RTC Date Time Set the RTC in one of two ways 1 from an incoming timing signal from Input 1 or Input 2 and 2 set manually By selecting Input 1 or Input 2 the Real Time Clock will be set automatical...

Страница 35: ...N Real Time Clock SET TIME CANCEL Month Day Year Hour Minute Second SEP 29 2016 12 34 56 100 H Figure 21 Set Real Time Clock Screen 1 Continued from page 23 2 As required touch the arrows above and below each of the date time selections 3 Touch SET TIME to set the time date Returns you to the system configuration menu 4 Touch CANCEL to leave this menu without changing any thing 25 ...

Страница 36: ...URA TION and DISPLAY DISPLAY allows you to view the incoming signals from INPUT 1 INPUT 2 both Input 1 and Input 2 and outgoing signal from the SOURCE connector CONFIGURATION DISPLAY INPUT 1 INPUT 1 INPUT 2 INPUT 2 SOURCE SOURCE SYSTEM INPUT 1 2 100 Figure 22 DISPLAY on the Home Screen 26 ...

Страница 37: ... square wave string of 100 bits and modulated is a 1 kHz carrier amplitude modulated with the same number of bits Notice that there are three different bit widths 8 milliseconds 5 milliseconds and 2 milliseconds The 8 millisecond pulse is con sidered a reference bit the 5 millisecond pulse is a digital one and the 2 millisecond pulse width is a digital zero Also notice that the 1 kHz sine wave amp...

Страница 38: ...H Figure 24 Unmodulated IRIG B Display The lower portion of Figure 24 graphically illustrates a part of the unmodulated IRIG B signal view adjusted using the slider Time Date UTC time date Day of Year Straight Binary Seconds SBS Time offset IEEE 1344 ON or OFF Time quality TQ Continuous Time Quality CTQ Leap Second Pending LSP Daylight Saving change Pending DSP Jitter or Pulse Jitter Two values me...

Страница 39: ...n 2 Zoom in and Zoom out 3 Pause freeze the display until play is pressed 4 Play resume viewing the active display after pausing 5 Slider bar at the bottom of the input screen allows you to scan through the entire range of 100 bits in the IRIG B time code 6 Gear button at the lower right allows you to more easily access the input configuration screen and change the configuration 7 Blue down arrow ...

Страница 40: ...iculty in accurately measuring the time of the 1 kHz rising wave compared to digital signal s fast rise time Generally acceptable accuracy for modulated IRIG B is about 10 microseconds whereas the unmodulated accuracy can be better than 100 nanoseconds In Figure 26 you will notice that the representative modulated IRIG B waveform is not a perfect sine wave in all magnifications This is because the...

Страница 41: ...s 100 H Figure 27 1 PPS Signal Connected to Input 1 The 1 PPS signal is generally a 10 millisecond pulse that occurs every second with the rising edge on time Synchronization be tween the 1 PPS and IRIG B time code can be seen in Figure 23 A 1 PPS signal connected to Input 1 would display as illustrated in Figure 27 31 ...

Страница 42: ...1 PPS Signal at Source Connector The 1 PPS signal is generally a 10 millisecond pulse that oc curs every second with the rising edge on time Synchronization between the 1 PPS and IRIG B time code can be seen in Figure 23 A 1 PPS signal transmitted from the source connector would dis play as illustrated in Figure 28 32 ...

Страница 43: ...e illustrated as an analog clock as seen in Fig ure 30 DCF77 Marker Details Figure 30 M minute marker second marker No 0 0 1 s R second marker No 15 indicates service request to the DCF77 signal generation system A1 announcement of a forthcoming change from CET to CEST or vice versa Z1 Z2 time zone indication CET Z1 0 1 s Z2 0 2 s CEST Z1 0 2 s Z2 0 1 s A2 announcement of a leap second 0 2 s S Sta...

Страница 44: ... 1 2 4 8 10 20 P2 1 2 4 8 10 20 1 2 4 Day of the week Calendar Day 1 2 4 8 10 1 2 4 8 10 20 40 80 P2 P3 M 0 10 20 30 40 50 Figure 30 DCF77 Signal Elements show as a 60 second clock Time and marker details are seen around the circumference of the circle The 59th second bit is missing for Standard DCF77 34 ...

Страница 45: ...OUTPUT Connector One BNC Signals IRIG B modulated unmodu lated DCF77 1PPS Levels 1 15 Vdc 1 10 Vpk Drive 125 mA 5V Time Ref Input 1 Input 2 Real Time Clock or Custom SYSTEM Display 800 x 480 color TFT capacitive touchscreen backlit Single or Dual Timing Signals Data and or Waveform Reference Input 1 Input 2 or Custom Features Flashlight Built in LED Audio Indicator tone enable disable 35 ...

Страница 46: ... A Cable 24 AWG Required Connector USB Micro B GENERAL Physical Size 204 7 x 166 5 x 48 5 mm 8 1 x 6 6 x 1 9 in 381 x 305 x 229 mm shipping 15 x 12 x 9 in Weight 0 6 kg 1 4 lbs maximum 2 5 kg 5 5 lbs shipping Environ Temperature Operating 10 o C to 50 o C Charging 0 o C to 45 o C Nonoperating 40 o C to 75 o C Humidity Noncondensing 36 ...

Страница 47: ...es Firmware Package Note that the new firmware will be in zipped format and does not need to be unzipped or unpacked before uploading to the 940A The Utility will unpack the required files when necessary Driver Software The 940A Utility software package includes the driver and the op eration manual Updating the 940A 1 Power on the 940A and start the 940A Utility See Figure 31 Figure 31 940A Utilit...

Страница 48: ...play the current firmware version and the serial number See Figure 33 Figure 33 940A Utility Reading Serial Number 5 In the 940A Utility main menu click Device then Upload Firmware browse to the location of the new firmware select the zipped file and click Open 6 Click the Upload To Device button A progress bar will appear that counts the number of blocks loaded and the total 7 After the upload th...

Страница 49: ...Upload Progress pear regarding the success of the upload and the new firmware version from the 940A 8 On the 940A Utility you can also select Device Read and it should read the firmware version 9 Touch the 940A display itself to leave the startup screen 39 ...

Страница 50: ...RIG Time Code Formats Time Code Attributes All IRIG time code formats use pulse width coding A binary 1 pulse has a duration of 50 of the index count interval see Table 2 a binary 0 pulse has a duration of 20 of the index count interval pulse identifiers have a duration of 80 and used as reference markers IRIG B time code signals may be either Unmodulated or Mod ulated Unmodulated time codes are D...

Страница 51: ...d year and recycles yearly It reads zero 0 hours at 2400 hours each day and day one 1 on day 365 at hour 2400 BCD year counts two digit year and cycles to the next year on January 1st and counts to 2099 99 The CF Control Function group contains year time quality leap year pending leap seconds and parity More recently Contin uous Time Quality CTQ was added according to IEEE C37 118 2011 SBS Straigh...

Страница 52: ...o 48 Ref bit at 29 7 index bits BCD Year 49 to 58 Ref bit at 49 CF Offset 59 to 68 Ref bit at 59 CF TQ 69 to 74 Ref bit at 69 CF Parity 75 CF CTQ 76 to 78 SBS 86400 secs 79 to 98 Ref bit at 79 one index bit Reference bit 99 Table 3 IRIG Time Code Bit Assignments 42 FONKEL MEXICANA Tel 55 55336114 informes fonkel com mx www fonkel com mx ...

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