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4-11

IM 704420-01E

Setting Measurement Conditions

(External arming
input connector)

External arming input circuit

EXT ARM

(TTL)

+5 V

10 k

Ω

74LS14
or equivalent

510

Ω

CAUTION

Do not apply a voltage that exceeds the allowable input voltage range to the

external arming input connector. This may cause damage to the TA120E.

4.5 Setting the Arming

Summary of Contents for 704420

Page 1: ...Digital Jitter Meter IM 704420 01E 1st Edition ...

Page 2: ...ional User s Manual TA120E and their operating procedures Notes The contents of this manual are subject to change without prior notice as a result of continuing improvements to the instrument s performance and functions The figures given in this manual may differ from the actual screen Every effort has been made in the preparation of this manual to ensure the accuracy of its contents However shoul...

Page 3: ...r s manual MODEL SUFFIX NO MODEL SUFFIX NO Made in Japan EXT OUT LEVEL DC MODEL and SUFFIX codes Model Suffix Code Specifications 704420 100 240 VAC Power cord D UL CSA Standard Power Cord Part No A1006WD Maximum rated voltage 125 V Maximum rated current 7 A F VDE Standard Power Cord Part No A1009WD Maximum rated voltage 250 V Maximum rated current 10 A Q BS Standard Power Cord Part No A1054WD Max...

Page 4: ...urchase separately For information and ordering contact your nearest YOKOGAWA dealer Part Name Model Quantity Notes 150 MHz probe 700998 1 Input resistance 10 MΩ length 1 5 m 10 1 and 1 1 switching type BNC cable 366924 1 BNC BNC length 1 m BNC cable 366925 1 BNC BNC length 2 m 50 Ω terminator 700976 1 EXT I O D Sub A1519JD A1520JD 1 9 pin male connector Rack mount kit 751533 E3 1 For EIA single m...

Page 5: ...ual the protection provided by the instrument may be impaired YOKOGAWA Electric Corporation assumes no liability for the customer s failure to comply with these requirements The following symbols are used on this instrument Handle with care To avoid injury death of personnel or damage to the instrument the operator must refer to the explanation in the User s Manual or Service Manual Alternating cu...

Page 6: ...ower cord Connect the power cord to a properly grounded three pin outlet Necessity of Protective Grounding Never cut off the internal or external protective earth wire or disconnect the wiring of the protective earth terminal Doing so poses a potential shock hazard Defect of Protective Grounding Do not operate the instrument if the protective earth or fuse might be defective Make sure to check the...

Page 7: ...rement conditions such as the measurement function equalizer ON OFF setting trigger mode slice level gate arming inhibit and clock signal Chapter 5 Displaying the Measured Results Describes how to operate the meter inidication and numeric display Chapter 6 Storing and Recalling Setup Information Describes how to store and recall setup information from the internal memory Chapter 7 Outputting Signa...

Page 8: ...escribes precautions that should be observed to prevent minor or moderate injury or damage to the property Note Provides important information for the proper operation of the instrument Symbols used on pages in which operating procedures are given On pages that describe operating procedures in Chapter 3 through 9 the following symbols are used to distinguish the procedures from their explanations ...

Page 9: ... 7 segment LED display numbers alphabets and operation symbols are represented using the special characters below Some of the characters are not used 0 1 2 3 4 5 6 7 8 9 A B C D E F G H I J Lowercase c Lowercase h K L M N O P Q R S T U V W X Y Z Exponent How to Use This Manual ...

Page 10: ...ly 3 6 3 4 Turning ON OFF the Power Switch 3 7 3 5 Connecting the Cable or Probe 3 8 3 6 Phase Correcting the Probe 3 9 3 7 Setting the Numeric Value 3 11 Chapter 4 Setting Measurement Conditions 4 1 Setting the Measurement Function 4 1 4 2 Turning ON OFF the Equalizer 4 4 4 3 Setting the Trigger Mode and Slice Level 4 5 4 4 Setting the Gate 4 7 4 5 Setting the Arming 4 9 4 6 Setting Inhibit 4 12 ...

Page 11: ... of Commands 8 15 8 7 2 CALCulation Group 8 18 8 7 3 COMMunicate Group 8 20 8 7 4 DCOut Group 8 21 8 7 5 DISPlay Group 8 22 8 7 6 INPut Group 8 23 8 7 7 MEASure Group 8 25 8 7 8 MEMory Group 8 26 8 7 9 RECall Group 8 28 8 7 10 SAMPle Group 8 29 8 7 11 SSTart Group 8 30 8 7 12 STARt Group 8 30 8 7 13 STATus Group 8 31 8 7 15 STORe Group 8 32 8 7 14 STOP Group 8 32 8 7 16 UNIT Group 8 33 8 7 17 Comm...

Page 12: ...nging the Factory Default Calibration Value 9 9 9 6 Executing the Performance Test 9 13 9 7 Adjusting the Equalizer 9 27 9 8 Circuit Breaker 9 29 9 9 Recommended Replacement Parts 9 30 Chapter 10 Specifications 10 1 Signal Input and Trigger 10 1 10 2 Measurement Function 10 2 10 3 Gate Arming and Inhibit 10 2 10 4 Display 10 3 10 5 Time Base 10 3 10 6 Input Output on the Rear Panel 10 4 10 7 GP IB...

Page 13: ...t external arming signal Input EXT I O signal DC output of jitter Monitor output of RF signal Monitor output of equalized RF signal Data signal binarized signal output Clock signal output EXT I O output Level measurement output RF signal Clock signal DATA TRIG 3 3 BI PHASE signal 1 2 1 BI PHASE measurement function option 2 Level measurement function option 3 EXT I O option Chapter 1 Explanation o...

Page 14: ... controls the acquisition of measured values according to the external arming signal EXT ARM signal or the inhibit signal INHIBIT Signal The fractional pulse generator generates fractional pulses from the signal that was selected by the signal multiplexer according to the acquisition controller s control The pulse width of the fractional pulse is converted into voltage by the time voltage converte...

Page 15: ...u selected Signal flow of the level measurement function option 3 The signal applied to the BI PHASE input terminal or the RF input terminal is input to the amplitude measurement circuit before the slicer and the amplitude is measured The measured amplitude value is processed by the CPU and displayed as a numeric valu on the 7 segment LED Signal flow of the EXT I O option The condition of the inpu...

Page 16: ...to digital values using an 8 bit A D converter 3T is determined by substituting the pulse width of the fractional pulses that were measured into the variables Ta and Tb of the above equation 3T Ta Tb Fractional time 3T data signal of a CD Reference clock 1 Reference clock 2 Fractional pulse Time voltage conversion 3T N t0 Ta Tb k Coefficient used in the A D conversion A D conversion A D conversion...

Page 17: ...ge value Determines a histogram frequency distribution from the measured values of multiple pulses residing in the range from 2 5T to 3 5T T 231 385 ns and calculates the standard deviation σ from the histogram This standard deviation σ is the 3T jitter The 3T jitter ratio is derived by dividing the standard deviation σ by the period of the CD clock signal of 231 385 ns The time averaged value of ...

Page 18: ...d deviation σ from the histogram This standard deviation σ is the D to C jitter The D to C jitter ratio is derived by dividing the standard deviation σ by the period T of the DVD clock signal The time averaged value of the measured time difference signal is the average value AVE σ Σ Xi AVE 2 Pi n i 1 n Number of bins histogram lines of the histogram Xi Class value of each bin Pi Relative frequency...

Page 19: ...ter passing through the equalizer Amplitude Amplitude Amplitude Binarization of the RF Signal The binarized data signal of the RF signal is the signal used to measure the pulse width and time difference Using the slicer of the TA120E the RF signal is binarized by setting the portion of the signal that is greater than the given slice level to the positive side and the portion that is less than the ...

Page 20: ...narized using the slice level that is specified in the range from 5 V to 5 V 1 V to 1 V when the equalizer is in operation The specified slice level RF signal Data signal Center value of the amplitude Trigger is activated When the polarity or slope setting is Auto manual mode The RF signal is binarized using the slice level obtained by superimposing the offset level that is specified in the range ...

Page 21: ...to the cue used to start the measurement In contrast to trigger which refers to the cue used to measure the pulse width or time difference of each pulse arming refers to the starting point of the measurement of a set of pulse widths or time differences used to derive the jitter Auto arming internal arming The internal signal of the TA120E is the arming source Arming is the cue used to start the fi...

Page 22: ...inhibit signal and gating S1 S2 S3 Data signal S4 S5 Not measured Gate Inhibit Inhibit measurement Gate open Start measurement Resume measurement S Measured value Relation between the inhibit signal gating and external arming S1 S2 S3 S4 S5 Data signal Not measured External arming Gate Inhibit Inhibit measurement Gate open Start measurement Resume measurement S Measured value Relation between the ...

Page 23: ...lope See 4 1 for the operating procedure When using the clock signal that is applied to the clock input connector for measuring the D to C jitter you can select on which slope rising edge or falling edge of the clock signal to make the measurement Adjusting the phase difference See 4 8 for the operating procedure When using the clock signal that is applied to the clock input connector for measurin...

Page 24: ...cted measurement function or the average value that is derived in the process of determining the jitter and jitter ratio is displayed using a numeric value You can switch the display between jitter jitter ratio and average value Turning OFF the jitter jitter ratio and average value numeric display If it is undesirable to view the changes in the numeric display of the jitter jitter ratio or average...

Page 25: ...tuation You can set the number of measured values average coefficient to be averaged in the range from 1 to 10 When the average coefficient is set to 5 Time Time A B C D E F a b c G Measured Jitter Ratio Jitter Ratio after Moving Average Monitor Output of RF Signal Monitor Output of Equalized RF Signal See 7 2 for the operating procedure You can output the RF signal that is applied to the RF input...

Page 26: ...zation to factory default settings Initialization of the information excluding the following settings Communication address Stored information in the internal memory Version Display See 7 5 for the operating procedure The firmware version ROM version of the TA120E can be displayed Key Lock See 7 6 for the operating procedure You can disable the front panel key operation Adjusting the Zero Position...

Page 27: ...lly adjust the phase difference indicates the measured results and adjusts the zero position of the needle sections 4 8 5 1 and 9 3 FUNC key Selects the measurement function sets the N speed and operates the self test sections 4 1 and 9 4 GATE key Sets the gate and gate time and operates the self test sections 4 4 and 9 4 ARM key Sets arming and arming delay and operates the self test sections 4 5...

Page 28: ... signal section 7 2 External arming input connector Inputs the external arming signal section 4 5 Inhibit input connector Inputs the inhibit signal section 4 6 Circuit breaker Reset method section 9 8 Vent holes Install the TA120E section 3 2 GP IB connector Connect the GP IB cable section 8 3 KEY LOCK switch Turns ON OFF the key lock section 7 6 Warning and caution plate Safety precautions pages ...

Page 29: ...the power and unplug the power cord Contact your nearest YOKOGAWA dealer as listed on the back cover of this manual When the cooling fan stops If error code 906 appears on the display the cooling fan is stopped Immediately turn OFF the power switch From the rear panel check for and remove any foreign object that may be obstructing the cooling fan If error message 906 appears when you turn ON the p...

Page 30: ...Do not bring charged objects near the input connector This can damage the internal circuitry When not using the instrument for a long period of time Turn OFF the power switch and remove the power cord from the outlet When carrying the instrument First remove the power cord and connection cables The weight of the instrument is approximately 5 kg To carry the instrument use the handle as shown in th...

Page 31: ... TA120E is installed horizontally and that the meter is in the vertical position The specifications of the meter cannot be satisfied when the instrument is installed with the rear panel down Installation Condition Install the instrument in a place that meets the following conditions Flat and even surface Install the instrument in a stable horizontal place Accurate measurements may be hindered when...

Page 32: ...instrument in the following places In direct sunlight or near heat sources Where an excessive amount of soot steam dust or corrosive gas is present Near strong magnetic field sources Near high voltage equipment or power lines Where the level of mechanical vibration is high In an unstable location Storage Location When storing the TA120E avoid the following locations A place with a relative humidit...

Page 33: ...If you are installing the instrument on a slippery surface attach the rubber feet two pieces included in the package to the hind feet If you are not using the stand return it to the original position while pressing the leg section of the stand inward Rack mount When rack mounting the TA120E use the rack mount kit that is sold separately For the procedure on attaching the TA120E to a rack see the U...

Page 34: ...et with a protective earth terminal Do not use an extension cord without protective earth ground Doing so will invalidate the protection Connecting the Power Cord 1 Check that the power switch on the front panel of the instrument is turned OFF 2 Connect the power cord plug to the power connector on the rear panel Use the power cord that came with the package 3 Connect the plug on the other end of ...

Page 35: ...ation See section 7 4 Turn ON the power switch while pressing the MEAS key the setup information is initialized to the factory default condition Press the SHIFT UTILITY key and select init the setup information excluding the communication address and setup information stored to the memory is initialized If the instrument still fails to power up when the power switch is turned ON after checking the...

Page 36: ...C ACpeak 100 kHz frequency of the input signal 100 MHz 3 5 f 5 V DC ACpeak where f is a frequency in MHz Ground Connect to the case ground The typical value is a representative or standard value It is not a warranted value CAUTION Do not apply a voltage that exceeds the maximum input voltage to the input connector This may cause damage to the input section Note When connecting the probe for the fi...

Page 37: ...t apply a voltage that exceeds the maximum input voltage to the input connector This may cause damage to the input section Do not short the CAL signal output terminal of the DL1540 or the monitor output connector of the TA120E Do not apply external voltage to the monitor output connector This may cause damage to the internal circuitry Check that the TA120E and DL1540 are turned OFF and connect the...

Page 38: ...Consequently a correct waveform cannot be input to the measurement circuit of the TA120E The input capacity of each probe is not necessarily all the same Therefore the probe has a variable capacitor trimmer that allows the input capacity to be adjusted This adjustment is called phase correction When using the probe for the first time make sure to perform phase correction The appropriate input capa...

Page 39: ...t a numeric value is shown on the display 3 Press the arrow keys or to select the digit you wish to change The value at the selected digit blinks 4 Turn the rotary knob to set the value within the range of each item As the value of the selected digit is increased the next higher digit is also increased at appropriate times In contrast as the value of the selected digit is decreased the next lower ...

Page 40: ...u selected 1 proceed to step 4 If you selected N proceed to step 2 Manually setting the N speed 2 When the measurement function is set to N press the SHIFT FUNC SPEED key The N indicator blinks and the N speed value is shown on the display 3 Use the rotary knob and arrow keys or to set the N speed value For the procedure to set numeric values see section 3 7 Selecting the polarity of the data sign...

Page 41: ...lue N when measuring the pulse width for speeds other than 1 When the value can be specified the SET indicator lights and the N speed value N is shown on the display Range 1 0 to 10 0 Resolution 0 1 Selecting the polarity of the data signal Measures the positive side from the rising slope to the next falling slope of the pulse width Measures the negative side from the falling slope to the next ris...

Page 42: ...me difference between the measurement starting point of the time difference and the first falling slope of the clock signal Selecting BI PHASE jitter For an explanation of BI PHASE jitter see the TA120E Digital Jitter Meter Option Function User s Manual IM704420 51E Note If you select N with the FUNC key and set the N speed setting to 6 2 you can measure the pulse width of a single speed 1 DVD usi...

Page 43: ...The EQLZ indicator turns OFF and the equalizer turns OFF Explanation When the equalizer is turned ON you can equalize compensate the signal amplitude of the high frequency region The signal amplitude in the high frequency region attenuates due to the frequency characteristics of the optical pickup By passing the RF signal that is applied to the RF input connector through the equalizer we can obtai...

Page 44: ...tting the slice level the slice level value is displayed Lights when the numeric values are shown on the display Procedure Selecting the trigger mode 1 Press the TRIG key to select AUTO MAN or both AUTO and MAN The indicator of the selected item lights If you selected MAN or both AUTO and MAN proceed to step 2 Setting the slice level 2 When the trigger mode is set to MAN or both AUTO and MAN press...

Page 45: ...e slice level in the range shown below The RF signal is binarized using the specified slice level When the value can be specified the SET indicator lights and the slice level is shown on the display Range 5 000 V to 5 000 V 1 000 V to 1 000 V when the equalizer is ON Resolution 1 mV AUTO and MAN auto manual mode The RF signal is binarized using the slice level obtained by superimposing a given off...

Page 46: ...ate time the gate time is displayed Lights when the numeric values are shown on the display Procedure Selecting the gate 1 Press the GATE key to select 105 0 1s 0 5s or MAN The indicator of the selected item lights Event gate is activated when 105 is selected time gate is activated when 0 1s 0 5s or MAN is selected If you selected MAN proceed to step 2 Manually setting the gate time 2 When the gat...

Page 47: ...ing measurements using a gate time other than 0 1s or 0 5s set the gate time in the range shown below When the value can be specified the SET indicator lights and the gate time is shown on the display Range 1 0 ms to 1000 0 ms Resolution 0 1 ms Note If you set the gate time between 100 1 ms and 1000 0 ms the measured values are acquired in units of 100 ms The measured values are acquired so that t...

Page 48: ...e delay time is displayed Lights when the numeric values are shown on the display Procedure Selecting auto arming internal arming Press the ARM key to turn OFF both the and indicators Setting the external arming Selecting the slope 1 Press the ARM key to select or The indicator of the selected item lights Setting the arming delay 2 When arming is set to external arming when the slope is set to or ...

Page 49: ...ing the slope Arming is activated on the rising slope of the external arming signal Arming is activated on the falling slope of the external arming signal Setting the arming delay When using external arming set the delay time of arming in the range shown below When the value can be specified the SET indicator lights and the delay time is shown on the display Range 0 0 ms to 1000 0 ms Resolution 0 ...

Page 50: ...put connector External arming input circuit IN EXT ARM TTL 5 V 10 kΩ 74LS14 or equivalent 510 Ω CAUTION Do not apply a voltage that exceeds the allowable input voltage range to the external arming input connector This may cause damage to the TA120E 4 5 Setting the Arming ...

Page 51: ... turned OFF Explanation You can inhibit measurements by applying an external signal inhibit signal to the INHIBIT input connector This is possible even while the gate is open or during measurement after arming activation Selecting the polarity Inhibits measurements while a positive signal is being input Inhibits measurements while a negative signal is being input Inhibit signal Input the inhibit s...

Page 52: ...bit input connector Inhibit input circuit IN INHIBIT TTL 5 V 10 kΩ 74LS14 or equivalent 510 Ω CAUTION Do not apply a voltage that exceeds the allowable input voltage range to the inhibit input connector This may cause damage to the TA120E 4 6 Setting Inhibit ...

Page 53: ...s OFF The D to C jitter measurements can now be carried out using the clock signal that is applied to the clock input connector Explanation For the clock signal used to measure the D to C jitter you can select either the clock signal that is applied to the clock input connector or the clock signal that is regenerated by the PLL circuit To use the clock signal regenerated by the PLL circuit you mus...

Page 54: ...arrow keys or to set the phase adjustment value The meter needle changes according to the changes in the adjustment value For the procedure to set numeric values see section 3 7 Explanation Adjusting the phase difference When using the clock signal that is applied to the clock input connector to make D to C jitter measurements you can change the amount of delay of the clock signal using the intern...

Page 55: ...can select the scale that is used when indicating the measured jitter ratio on the analog meter 10 The scale line is written every 0 2 The needle is capable of indicating a jitter ratio of up to 11 20 The scale line is written every 0 5 The needle is capable of indicating a jitter ratio of up to 22 Note The phase difference between the data signal and the clock signal can be indicated on the analo...

Page 56: ...is displayed using numeric values When σ T and light the jitter ratio is displayed using numeric values Displaying the average of the measured values Press the MEAS key to select AVE for the measured parameter The AVE indicator lights The average of the measured values is displayed using numeric values Turning OFF the numeric display 1 Press the SHIFT UTILITY key The display shows the characters i...

Page 57: ...urning ON OFF the numeric display If the changes in the numeric display of the jitter or jitter ratio bother you you can display the characters d oFF instead of displaying the values Note Even when the numeric display is turned OFF the display shows the setup values when setting the TA120E For the setup procedure see chapter 4 Error codes and version information are also shown on the display even ...

Page 58: ...ber you selected previously is shown in x 2 Turn the rotary knob to select the preset number for storing the setup information Storing the setup information 3 Press the key The characters StorE are displayed for approximately a second and the setup information is stored When the setup information is stored measurement is resumed Explanation Setup information that is stored The following setup info...

Page 59: ...rs PrStx The preset number you selected previously is shown in x 2 Turn the rotary knob to select the preset number for recalling the setup information Recalling the setup information 3 Press the key The characters rECAL are displayed for approximately a second and the setup information is recalled Then the measurement is started using the recalled setup information Explanation Setup information t...

Page 60: ...u select Jitt jitter ratio output a DC voltage corresponding to the jitter ratio is output from the jitter DC output connector If you select JudGE determination output a DC voltage of 5 V is output when the jitter ratio is below the determination level and 0 V when the jitter is above the determination level from the jitter DC output connector Setting the jitter ratio output range Setting the uppe...

Page 61: ...io correction coefficient α 20 Press the SHIFT UTILITY key The display shows the characters init 21 Turn the rotary knob to select ALPHA 22 Press the key The display shows the correction coefficient α 23 Use the rotary knob and arrow keys or to set the jitter ratio correction coefficient α For the procedure to set numeric values see section 3 7 Setting the jitter ratio correction coefficient β 24 ...

Page 62: ...r DC output connector on the rear panel You can specify the jitter ratio that will output 5 V upper limit and the jitter ratio that will output 0 V lower limit and output DC voltage that is proportional to the jitter ratio 5 V is output for calculated results that exceed 5 V For setting the upper and lower limits see Setting the jitter ratio output range described later 5 0 0 0 25 5 Jitter Ratio O...

Page 63: ... VDC and 0 VDC respectively Range 0 00 to 100 00 Resolution 0 01 Setting the determination level You can set the determination level for the determination output Range 0 00 to 100 00 Resolution 0 01 Setting the average coefficient of the DC output filter Takes the moving average of the jitter that has been measured When the DC output fluctuates due to instability in the measured jitter this functi...

Page 64: ... T is the period of the clock signal that is applied to the clock input connector or regenerated by the PLL circuit Selectable Range Correction coefficient α 0 0001 to 9 9999 Correction coefficient β 9 999 to 9 999 Resolution Correction coefficient α 0 0001 Correction coefficient β 0 001 Note The upper limit must be greater than the lower limit when setting the jitter ratio output range If the ave...

Page 65: ...zer is activated the equalized RF signal is output Item Specifications Output impedance 50 Ω typical value Output level When the monitor equipment receives the signal at an input impedance of 50 Ω the output level is as follows When the equalizer is OFF Approximately 1 4 of the RF signal within 5 V when the trigger mode is set to manual mode Approximately 4 5 of the RF signal within 5 V when the t...

Page 66: ...Data signal output connector Data signal output circuit OUT SLICED RF TTL 5 V 5 V 50 Ω Outputting the clock signal You can output the clock signal that is applied to the clock input connector from the clock signal output connector on the rear panel at TTL levels When the PLL circuit is in operation the clock signal regenerated by the PLL circuit is output Item Specifications Output impedance 50 Ω ...

Page 67: ...e Slope of the external arming signal Arming delay setting ON OFF condition of inhibit Polarity ON OFF condition of the equalizer Trigger mode type Slice level ON OFF condition of the PLL circuit Phase difference adjustment value Meter scale type Numeric display type jitter jitter ratio average value ON OFF condition of the numeric display DC output mode Upper limit of the jitter ratio output rang...

Page 68: ...nitialization We recommend that you transmit the setup information to a PC using a communication command and save the information beforehand If you initialize the settings to factory default the GP IB address is also initialized Initializing the settings to factory default 1 Check that the power switch is turned OFF 2 While pressing the MEAS key turn ON the power switch Hold the MEAS key down for ...

Page 69: ...rence adjustment value 0 0 ns Meter scale type Jitter ratio Scale 10 scale Numeric display type jitter jitter ratio or average value Jitter ratio ON OFF condition of the numeric display ON DC output mode Jitt Upper limit of the jitter ratio output range 25 00 Lower limit of the jitter ratio output range 0 00 Determination level 12 50 Average coefficient of the DC output filter 1 Jitter ratio corre...

Page 70: ... 10 deg 20 180 us ms ns MEAS x1 3TCD xN 3TCD xN BI PHASE SPEED DELAY GATE TIME FUNC GATE LOCAL DATA SCALE PRESET PHASE 10 20 TRIG CLOCK PHASE AUTO MAN GP IB REMOTE EQLZ LEVEL PLL SHIFT ARM INH DtoC DVD 0 1s 0 5s MAN UTILITY OPTION 10 5 σ σ 1 Press the SHIFT UTILITY key The display shows the characters init 2 Turn the rotary knob to select F VEr 3 Press the key The firmware version ROM version is d...

Page 71: ...h on the rear panel upward in the opposite direction of the arrow The key lock turns OFF and the KEY LOCK indicator on the front panel turns OFF All key operations are enabled Explanation You can disable key lock the front panel key operation However the following switch and key operations are enabled even during key lock Turning ON OFF the power switch Turning ON OFF the KEY LOCK switch Note Key ...

Page 72: ...ies in which the response data are created upon receiving a send request from the controller e Commands that have parameters that restrict one another See the example of the commands given in section 8 7 6 Items that are included in the functional or composite header elements constituting a command See sections 8 6 and 8 7 7 Buffer sizes that affect block data transmission Data block transmission ...

Page 73: ...V These common commands are not supported 20 The extent of the self test using the TST command The self test consists of the same tests that are performed at power up 21 The structure of the extended return status See section 8 8 22 Whether each command is processed in an overlap fashion or sequentially See section 8 6 6 Synchronization with the Controller and section 8 7 23 The description of the...

Page 74: ... Lockout mode see next page by the controller The REMOTE indicator turns OFF Key operations are enabled The settings that existed in the remote mode are maintained even when the instrument switches to the local mode GP IB Interface Specifications Electrical and mechanical specifications Conforms to IEEE St d 488 1978 Functional specifications See the table below Code ISO ASCII code Mode Addressabl...

Page 75: ...evices can be connected to a single GP IB system However no more than 15 devices including the controller can be connected to a single system When connecting multiple devices each device must have its own unique address Use a cable of length 2 m or less for connecting the devices Make sure the total cable length does not exceed 20 m When communicating have at least two thirds of the devices turned...

Page 76: ... address the GP IB address is displayed Lights when the numerical values are shown on the display Procedure 1 Press the SHIFT LOCAL GP IB key The GP IB address is shown on the display 2 Use the rotary knob and arrow keys or to set the GP IB address For the procedure to set numeric values see section 3 7 Explanation Setting the GP IB address Each device that can be connected via GP IB has a unique ...

Page 77: ...Poll Disable In addition listener address talker address and secondary commands are also considered interface messages The differences between SDC and DCL Of the multi line messages SDC messages are those that require talker or listener designation and DCL messages are those that do not require the designation Therefore SDC messages are directed at a particular instrument while DCL messages are di...

Page 78: ...instrument are called program messages and messages that are sent back from the instrument to the controller are called response messages If a program message contains a message unit that requests a response a query the instrument returns a response message upon receiving the program message A single response message is always returned in response to a single program message Program Messages Data ...

Page 79: ...ists of one or more response message units each response message unit corresponds to one response Response message units are separated by a semicolon For details regarding the format of the response message unit see the next section Example SAMPLE INHIBIT STATE 1 POLARITY POSITIVE RMT Unit Unit RMT RMT is a response message terminator It is NL END Response message unit format The response message ...

Page 80: ...ating conditions When both the transmit and receive buffers become full at the same time the instrument can no longer continue to operate This state is called a deadlock In this case operation can be resumed by discarding the program message Deadlock will not occur if the program message including the PMT is kept below 1024 bytes Furthermore deadlock never occurs if a program message does not cont...

Page 81: ...to the same command group are being concatenated Example MEASURE FUNCTION D3T PMT MEASURE SPEED 1 0 PMT Upper level Query An upper level query is a query in which a question mark is appended to the highest level command of a group Execution of an upper level query allows all settings that can be specified in the group to be received at once Some query groups which are comprised of more than three ...

Page 82: ...he header and data Data are classified as follows Data Description Decimal Value expressed as a decimal number Example Recall the information to be specified RECALL 2 Voltage Time Physical value Phase Example Gate time Percent SAMPle GATE TIME 1MS Register Register value expressed as either binary octal decimal or hexadecimal Example Extended event register value STATUS EESE HFE Character data Pre...

Page 83: ...but also Hexadecimal Octal or Binary Register is used when each bit of the value has a particular meaning It is expressed in one of the following forms Form Example NRf 1 H Hexadecimal value made up of the digits H0F 0 to 9 and A to F Q Octal value made up of the digits 0 to 7 q777 B Binary value made up of the digits 0 and 1 B001100 Register is not case sensitive Response messages are always retu...

Page 84: ...mands supported by this instrument are sent consecutively the execution of the next command is delayed until the execution of the previous command is completed Synchronization Using Sequential Commands Even for sequential commands synchronization is sometimes required for non communication related reasons such as a trigger occurrence For example if the next program message is sent when querying th...

Page 85: ...LCulation JITTer command will not be executed until a service request is generated Using the COMMunicate WAIT command The COMMunicate WAIT command is used to wait for a specific event to occur Example STATus FILTer1 RISE STATus EESR SSTart PMT Read the response to STATus EESR COMMunicate WAIT 1 CALCulation JITTer PMT The descriptions of STATus FILTer1 RISE and STATus EESR are the same as those giv...

Page 86: ...put of the jitter ratio or queries the current setting 8 21 DCOut JITTer RANGe Sets the upper and lower limits of the DC output of the jitter ratio or queries the current setting 8 21 DCOut JUDGe LEVel Sets the determination level or queries the current setting 8 21 DCOut JUDGe RESult Queries the determination result 8 22 DCOut MODE Sets the DC output mode or queries the current setting 8 22 DISPl...

Page 87: ...e current setting 8 29 SAMPle ARMing SLOPe Sets the arming slope or queries the current setting 8 30 SAMPle ARMing SOURce Sets the arming source or queries the current setting 8 30 SAMPle GATE Queries all settings related to the gate 8 30 SAMPle GATE MODE Sets the gate mode or queries the current setting 8 30 SAMPle GATE TIME Sets the gate time or queries the current setting 8 30 SAMPle INHibit Qu...

Page 88: ... or queries the current setting 8 34 ESR Queries the standard event register and clears the register 8 34 IDN Queries the instrument model 8 34 OPC Sets whether or not to clear the OPC event upon the completion of the specified overlap command 8 34 OPC Creates a response upon the completion of the specified overlap command 8 34 RST Initializes the setup information 8 35 SRE Sets the service reques...

Page 89: ...on MAXimum Function Queries the maximum value Syntax CALCulation MAXimum Example CALCULATION MAXIMUM 1 8967E 8 Description If the statistical value is not valid NAN is returned CALCuIation MELE CALCuIation MELE CALCuIation MELE CALCuIation MELE CALCuIation MELE Function Queries the MELE value Syntax CALCuIation MELE Example CALCULATION MELE 1 13E 1 Description If the statistical value is not valid...

Page 90: ...ue MAX Xi man Minimum value MIN Indicates the minimum class value MIN Xi min Average value AVE Computes the average value Pi is the relative frequency AVE Σ Xi Pi n i 1 If the total number of samples on which the statistics are being calculated is N and the frequency of occurrence number of samples of a certain bin is Ni then the relative frequency becomes Pi Ni N Standard deviation jitter σ Compu...

Page 91: ...ATE HEADER COMMUNICATE HEADER 1 COMMunicate VERBose COMMunicate VERBose COMMunicate VERBose COMMunicate VERBose COMMunicate VERBose Function Sets the response messages to full form or abbreviated form or queries the current setting Syntax COMMunicate VERBose Boolean COMMunicate VERBose Example COMMUNICATE VERBOSE OFF COMMUNICATE VERBOSE COMMUNICATE VERBOSE 0 COMMunicate WAIT COMMunicate WAIT COMMu...

Page 92: ...es to be averaged of the DC output of the jitter ratio or queries the current setting Syntax DCOut JITTer CYCLe NRf DCOut JITTer CYCLe NRf 1 to 10 in 1 steps Example DCOUT JITTER CYCLE 1 DCOUT JITTER CYCLE 1 Description This command can be used only when the DC output mode is set to JITTer DCOut JITTer RANGe DCOut JITTer RANGe DCOut JITTer RANGe DCOut JITTer RANGe DCOut JITTer RANGe Function Sets ...

Page 93: ...d to the display Syntax DISPlay Example DISPLAY DISPLAY SCALE R10 STATISTIC 1 UNIT NS DISPlay MEASure DISPlay MEASure DISPlay MEASure DISPlay MEASure DISPlay MEASure Function Sets the measured value to displayed or queries the current setting Syntax DISPlay MEASure JITTer SDEViation AVERage DISPlay MEASure Example DISPLAY MEASURE JITTER DISPLAY MEASURE DISPLAY MEASURE JITTER DISPlay SCALe DISPlay ...

Page 94: ...roup The commands in this group deal with the input signal INPut DATA TRIGger MODE Space MANual AUTO BOTH LEVel Space Voltage POLarity Space POSitive NEGative BOTH CLOCk SLOPe Space RISE FALL DELay TIME Space Time EQ MODE Space NRf PLL MODE Space OFF ON OFF ON NRf STATus ...

Page 95: ...ut DATA POLarity INPut DATA POLarity INPut DATA POLarity INPut DATA POLarity Function Sets the polarity of the data signal or queries the current setting Syntax INPut DATA POLarity POSitive NEGative BOTH INPut DATA POLarity Example INPUT DATA POLARITY POSITIVE INPUT DATA POLARITY INPUT DATA POLARITY POSITIVE Description When the measurement function is D3T BOTH cannot be specified INPut DATA TRIGg...

Page 96: ...cked UNLOCK is returned When locked LOCK is returned 8 7 7 MEASure Group The commands in this group deal with measurement conditions MEASure FUNCtion Space DTOC D3T SPEed Space NRf MEASure MEASure MEASure MEASure MEASure Function Queries all settings related to the measurement Syntax MEASure Example MEASURE MEASURE FUNCTION DTOC MEASure FUNCtion MEASure FUNCtion MEASure FUNCtion MEASure FUNCtion M...

Page 97: ...ansmission order of binary data or queries the current setting Syntax MEMory BYTeorder LSBFirst MSBFirst MEMory BYTeorder Example MEMORY BYTEORDER LSBFIRST MEMORY BYTEORDER MEMORY BYTEORDER LSBFIRST MEMory DATaselect MEMory DATaselect MEMory DATaselect MEMory DATaselect MEMory DATaselect Function Sets the data to be transmitted or queries the current setting Syntax MEMory DATaselect TSTamp MEASure...

Page 98: ...g 160 0 ns to this value MEMory SIZE MEMory SIZE MEMory SIZE MEMory SIZE MEMory SIZE Function Queries the number of data points that have been measured Syntax MEMory SIZE Example MEMORY SIZE 100000 Example You can make a query only when the measurement function is set to WOBBle BI PHASE measurement function option see the TA120E Digital Jitter Meter Option Function User s Manual IM704420 51E MEMor...

Page 99: ...oup RECall Space NRf RECall RECall RECall RECall RECall Function Recalls the setup information Syntax RECall NRf NRf 0 to 6 Example RECALL 1 Description To continue with measurements use the START command after this command 8 7 Commands ...

Page 100: ... SAMPLE INHIBIT STATE 0 SAMPle ARMing SAMPle ARMing SAMPle ARMing SAMPle ARMing SAMPle ARMing Function Queries all settings related to arming Syntax SAMPle ARMing Example SAMPLE ARMING SAMPLE ARMING SOURCE EXTERNAL SLOPE RISE 8 7 Commands SAMPle ARMing DELay TIME SAMPle ARMing DELay TIME SAMPle ARMing DELay TIME SAMPle ARMing DELay TIME SAMPle ARMing DELay TIME Function Sets the arming delay time ...

Page 101: ...eries the current setting Syntax SAMPle GATE TIME Time SAMPle GATE TIME Time 0 1 ms to 1 s in 0 1 ms steps Example SAMPLE GATE TIME 1MS SAMPLE GATE TIME SAMPLE GATE TIME 100 0E 03 Description You can set or query the gate time only when the gate mode is set to TIME SAMPle INHibit SAMPle INHibit SAMPle INHibit SAMPle INHibit SAMPle INHibit Function Queries all settings related to inhibit Syntax SAM...

Page 102: ...r or queries the current setting Syntax STATus EESE Register STATus EESE Register 0 to 65535 Example STATUS EESE 257 STATUS EESE STATUS EESE 257 STATus EESR STATus EESR STATus EESR STATus EESR STATus EESR Function Queries the content of the extended event register and clears the register Syntax STATus EESR Example STATUS EESR 1 8 7 Commands STATus ERRor STATus ERRor STATus ERRor STATus ERRor STATu...

Page 103: ...P STOP STOP STOP STOP STOP Function Stops the measurement Syntax STOP Example STOP 8 7 15 STORe Group STORe Space NRf STORe STORe STORe STORe STORe Function Stores the setup information Syntax STORe NRf NRf 0 to 6 Example STORE 1 8 7 Commands ...

Page 104: ...t setting Syntax UNIT TIME Multiplier S UNIT TIME Multiplier See the description below Example UNIT TIME MS UNIT TIME UNIT TIME MS Description The following multipliers can be specified EX Exa 1018 PE Peta 1015 T Tera 1012 G Giga 109 MA Mega 106 K Kilo 103 M Milli 10 3 U Micro 10 6 N Nano 10 9 P Pico 10 12 F Femto 10 15 A Ato 10 18 UNIT VOLTage UNIT VOLTage UNIT VOLTage UNIT VOLTage UNIT VOLTage F...

Page 105: ...he standard event enable register or queries the current setting Syntax ESE NRf ESE NRF 0 to 255 Example ESE 253 ESE 253 Description For details on the standard event enable register see section 8 8 Status Report ESR ESR ESR ESR ESR Function Queries the standard event register and clears the register Syntax ESR Example ESR 253 Description For details on the standard event register see section 8 8 ...

Page 106: ...Description For details on the status byte register see section 8 8 Status Report TRG TRG TRG TRG TRG Function Executes single measurement Syntax TRG Description The multi line message GET Group Execute Trigger also performs the same operation as this command TST TST TST TST TST Function Performs a self test and queries the result Syntax TST Example TST 0 Description If all the tests terminate nor...

Page 107: ...7 6 5 4 3 2 1 0 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Condition register Transition filter Extended event register 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 Extended event enable register 7 6 5 4 3 2 1 0 Standard event register 7 6 5 4 3 2 1 0 Standard event enable register OR OR 7 6 ESB MAV EES EAV 1 0 Status byte MSS RQS Output queue Error queue Service request ...

Page 108: ... event register are 1s or 0s For details regarding these commands see section 8 7 8 8 2 Status Byte Status Byte 7 6 ESB MAV EES EAV 1 0 RQS MSS Bits 0 1 and 7 Not used always 0 Bit 2 EAV Error Available Set to 1 when the error queue is not empty In other words this bit is set to 1 when an error occurs See the page 8 40 Bit 3 EES Extend Event Summary Bit Set to 1 when the logical product of the ext...

Page 109: ...it of the status byte is cleared Since the CLS command does not clear the output queue bit 4 MAV of the status byte is unaffected However if the CLS command is received immediately after the program message terminator the output queue is also cleared 8 8 3 Standard Event Register Standard Event Register URQ 6 PON 7 5 4 3 2 1 0 CMEEXE DDEQYERQCOPC Bit 7 PON Power ON Set to 1 when the instrument is ...

Page 110: ...rument is powered up again 8 8 4 Extended Event Register The transition filter detects the changes in the condition register that indicate the internal condition of the instrument and writes the result to the extended event register 0 0 6 ULK 7 5 4 3 2 1 0 0 0 0 0 0 DAT 8 9 10 11 12 13 14 0 0 0 0 0 0 0 15 6 7 5 4 3 2 1 0 8 9 10 11 12 13 14 15 Condition register STATus CONDition Transition filter 0...

Page 111: ... output queue is empty D1 D2 D1 D2 D1 Error Queue The error queue stores the error number and message when an error occurs For example if the controller sends an incorrect program message the error number 113 and the message Undefined header are stored in the error queue when the error is displayed The STATus ERRor query can be used to read the contents of the error queue As with the output queue ...

Page 112: ...fessional Edition or later GPIB board AT GPIB TNT IEEE 488 2 by National Instruments Settings on Visual Basic Standard module used Niglobal bas and Vbib 32 bas Settings on the TA120E All sample programs given in this chapter use GP IB address of 1 for the TA120E Set the GP IB address to 1 according to the procedure in section 8 4 8 9 2 Sample Program Image ...

Page 113: ...or Dev ildev InitGpib 1 Exit Function End If sts ilsic brd Set IFC If sts 0 Then Call DisplayGPIBError sts ilsic InitGpib 1 Exit Function End If InitGpib 0 End Function Private Sub DisplayGPIBError ByVal sts As Integer ByVal msg As String Dim wrn As String Dim ers As String Dim ern As Integer If sts And TIMO Then wrn Time out Chr 13 Else wrn End If If sts And EERR Then ern iberr If ern EDVR Then e...

Page 114: ...Str sts Chr 13 wrn Error No Str ern Chr 13 ers Chr 13 msg vbExclamation Error Call ibclr Dev Call ibonl Dev 0 Dev 1 End Sub Private Sub Command1_Click Dim sts As Integer If StartFlag 1 Then Exit Sub End If StartFlag 1 Text1 Text START List1 Clear Dummy DoEvents sts SetParameter Run Sample1 Set Get Measure Parameter If sts 0 Then List1 AddItem Query 0 List1 AddItem Query 1 List1 AddItem Query 2 Lis...

Page 115: ...AddItem Query 3 List1 AddItem Query 4 List1 AddItem Query 5 List1 AddItem Query 6 List1 AddItem Query 7 List1 AddItem Query 8 List1 AddItem Query 9 List1 AddItem Query 10 End If Text1 Text END StartFlag 0 End Sub Private Sub Form_Load StartFlag 0 Clear Start Flag Dev 1 Clear device id addr 1 GPIB Address 1 Command1 Caption Sample1 Chr 13 Set Get Parameter Command2 Caption Sample2 Chr 13 Single Mea...

Page 116: ... ON sts ilwrt Dev msg Len msg Send Command If sts 0 Then Call DisplayGPIBError sts msg SetParameter 1 Exit Function End If msg STOP term Measure Stop sts ilwrt Dev msg Len msg Send Command If sts 0 Then Call DisplayGPIBError sts msg SetParameter 1 Exit Function End If msg MEASURE FUNCTION DTOC term Function Data to Clock sts ilwrt Dev msg Len msg Send Command If sts 0 Then Call DisplayGPIBError st...

Page 117: ...msg SetParameter 1 Exit Function End If msg SAMPLE ARMING SOURCE term Get Arming sts ilwrt Dev msg Len msg Send Command If sts 0 Then Call DisplayGPIBError sts msg SetParameter 1 Exit Function End If sts ilrd Dev qry Len qry If sts 0 Then Call DisplayGPIBError sts msg SetParameter 1 Exit Function End If Query 2 Left qry ibcntl 1 msg SAMPLE INHIBIT STATE OFF term Inhibit Off sts ilwrt Dev msg Len m...

Page 118: ...l DisplayGPIBError sts msg SetParameter 1 Exit Function End If msg INPUT DATA TRIGGER MODE term Get Trigger Mode sts ilwrt Dev msg Len msg Send Command If sts 0 Then Call DisplayGPIBError sts msg SetParameter 1 Exit Function End If sts ilrd Dev qry Len qry If sts 0 Then Call DisplayGPIBError sts msg SetParameter 1 Exit Function End If Query 5 Left qry ibcntl 1 msg INPUT EQ MODE ON term Equalizer O...

Page 119: ...nction End If msg INPUT PLL MODE term Get PLL sts ilwrt Dev msg Len msg Send Command If sts 0 Then Call DisplayGPIBError sts msg SetParameter 1 Exit Function End If sts ilrd Dev qry Len qry If sts 0 Then Call DisplayGPIBError sts msg SetParameter 1 Exit Function End If Query 7 Left qry ibcntl 1 Call ibonl Dev 0 SetParameter 0 End Function 8 9 Sample Program ...

Page 120: ... Len msg Send Command If sts 0 Then Call DisplayGPIBError sts msg SingleMeasure 1 Exit Function End If msg STATUS EESR term Clear Extended Event Register sts ilwrt Dev msg Len msg Send Command If sts 0 Then Call DisplayGPIBError sts msg SingleMeasure 1 Exit Function End If sts ilrd Dev qry Len qry Read EESR If sts 0 Then Call DisplayGPIBError sts msg SingleMeasure 1 Exit Function End If msg SSTART...

Page 121: ...tistics 1 Exit Function End If msg CALCULATION AVERAGE term Get Average value sts ilwrt Dev msg Len msg If sts 0 Then Call DisplayGPIBError sts msg GetStatistics 1 Exit Function End If sts ilrd Dev qry Len qry If sts 0 Then Call DisplayGPIBError sts msg GetStatistics 1 Exit Function End If Query 0 Average Left qry ibcntl 1 msg CALCULATION SDEVIATION term Get Standard Deviation value sts ilwrt Dev ...

Page 122: ...sts 0 Then Call DisplayGPIBError sts msg GetStatistics 1 Exit Function End If Query 3 Minimum Left qry ibcntl 1 msg CALCULATION PTOPEAK term Get Peak Peak value sts ilwrt Dev msg Len msg If sts 0 Then Call DisplayGPIBError sts msg GetStatistics 1 Exit Function End If sts ilrd Dev qry Len qry If sts 0 Then Call DisplayGPIBError sts msg GetStatistics 1 Exit Function End If Query 4 Peak Peak Left qry...

Page 123: ...0 Then Call DisplayGPIBError sts msg GetStatistics 1 Exit Function End If Query 7 ELError Left qry ibcntl 1 msg CALCULATION MELE term Get MELE value sts ilwrt Dev msg Len msg If sts 0 Then Call DisplayGPIBError sts msg GetStatistics 1 Exit Function End If sts ilrd Dev qry Len qry If sts 0 Then Call DisplayGPIBError sts msg GetStatistics 1 Exit Function End If Query 8 MELE Left qry ibcntl 1 msg CAL...

Page 124: ...t Dev msg Len msg If sts 0 Then Call DisplayGPIBError sts msg GetStatistics 1 Exit Function End If sts ilrd Dev qry Len qry If sts 0 Then Call DisplayGPIBError sts msg GetStatistics 1 Exit Function End If Query 10 Sample Num Left qry ibcntl 1 Call ibonl Dev 0 GetStatistics 0 End Function 8 9 Sample Program ...

Page 125: ...6D 6E 6F 70 71 72 73 74 75 76 77 78 79 7A 7B 7C 7D 7E 7F 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 1...

Page 126: ...rn it ON The display is not correct The system has malfunctioned Reboot the system 3 4 Noise appears on the display Install the TA120E where there is no noise 3 2 Remove the noise The ambient temperature or humidity Install the TA120E in a place that meets 3 2 is outside the specifications thespecifications Keys do not work Key lock is ON Turn OFF the key lock 7 6 The TA120E is in the remote mode ...

Page 127: ...sing 8 6 8 7 Write the required data 111 Header separator error HEADER SEPARATOR is missing 8 6 Use a space to separate the header and data 112 Program mnemonic too long mnemonic may be too long Check the mnemonic 8 7 alphanumerical character string 113 Undefined header No such command Check the header 8 7 114 Header suffix out of range The value of HEADER is not correct 8 7 Check the header 120 N...

Page 128: ... the setup information 8 7 Check the relevant setting values 222 Data out of range The value of DATA is outside the range 8 7 Check the range 223 Too much data The length of DATA is too long Check the 8 7 length of the data 224 Illegal parameter value The value of DATA is inappropriate Check 8 7 the range 241 Hardware missing The hardware is not implemented Check the existence of options 260 Expre...

Page 129: ...6 Fan stopped Turn OFF the The cooling fan has stopped Immediately turn 3 4 power immediately OFF the power 909 No Battery The backup battery is dead Servicing is required 3 4 for battery replacement 910 Calibration data lost The calibration value is abnormal Servicing is required for calibration 912 Fatal error in Communication Communication driver error Servicing required driver 914 Time out occ...

Page 130: ...ust the needle by turning the adjustment trimmer with a flat head screwdriver so that the needle is exactly over the zero line Explanation When the zero position of the needle goes off alignment you can adjust the needle position using the adjustment trimmer located at the center of the meter View the analog meter straight on eye level horizontal to the zero line and adjust so that the needle is e...

Page 131: ...maintenance mode 2 Check that the power switch is turned OFF 3 While pressing the SCALE key turn ON the power switch Hold the SCALE key down for approximately 3 seconds After displaying TA120E 704420 V x xx version display tESt PASS the characters tEST appear on the display The TA120E enters the start condition in the maintenance mode Testing the keys and rotary knob Performing the test 4 Press th...

Page 132: ...in the maintenance mode 6 Press the key once The characters tEST appear on the display and the TA120E returns to the start condition in the maintenance mode Testing the board 4 Press the INH key After the test items CPu MEAS are shown on the display PASS or FAiL is displayed If PASS is displayed the board is operating normally Proceed to step 9 If FAiL is displayed a problem has been detected Proc...

Page 133: ... TRIG triG CLOCK CLoCK PHASE PHASE riGHt LEFt MEAS MEAS SCALE SCALE Rotary knob to the right rot r Rotary knob to the left rot L Indicator test You can test all the indicators including the 7 segment LED and the decimal point on the display However the indicators for the RF input connector cannot be tested Turn the rotary knob and confirm that the lit position of the indicator moves accordingly If...

Page 134: ...that initialization see section 7 4 will not set the calibration value back to factory default Carry out the operations below in the following cases When the allowable range is exceeded in the performance test described in section 9 6 When parts of the TA120E have been replaced Removing the signal cable 1 Remove all cables that are connected to the TA120E input and output cables excluding the powe...

Page 135: ...decimal value is displayed If PASS is displayed the DC voltage level is normal If a hexadecimal value is displayed a problem has occurred Please note the hexadecimal value that is displayed Checking the time voltage converter 8 Turn the rotary knob to select tV 9 Press the key PASS or a hexadecimal value is displayed If PASS is displayed the time voltage converter is operating normally If a hexade...

Page 136: ... the TA120E is in the remote mode at this point calibration cannot be performed Switch from remote mode to local mode Warm Up Warm up the TA120E for at least 30 minutes with the power turned ON before performing calibration Calibrated items The following items can be calibrated DC voltage level Time voltage converter Programmable delay circuit The Signal multiplexer the fractional pulse generator ...

Page 137: ... the calibration corresponding to the CAL command from the front panel of the TA120E When you wish to change the factory default calibration value Perform the calibration using the XCAL command After calibration the factory default calibration value is changed Because the factory default calibration value is overwritten you cannot set the calibration value back to factory default even if you execu...

Page 138: ... instrument Programmable DC voltage current source 7651 YOKOGAWA The procedure for testing the trigger voltage accuracy using the recommended instruments is described below Connecting the Instrument Check that the power switch is turned OFF on all instruments before connecting them Connect the output of the DC voltage generator to the RF input connector of the TA120E 7651 PRO GRAMABLE DCSOUR CE YO...

Page 139: ...he trigger level and record the voltage at which the RF signal input indicator blinks as VL 4 Set the trigger level of the TA120E to 3 900 V 5 Increase the trigger level of the TA120E in 1 mV steps Gradually increase the trigger level and record the voltage at which the RF signal input indicator blinks as VH 6 The trigger voltage is derived by taking the average of VL and VH Confirm that this volt...

Page 140: ...mended instruments is described below Connecting the Instrument Check that the power switch is turned OFF on all instruments before connecting them Connect the output of the synthesized signal generator to the RF input connector of the TA120E through the 50 Ω terminator 8 65 7 B DATA TRIG TA120E Synthesized signal generator 8657B OUTPUT RF input connector 50 Ω terminator Instrument settings TA120E...

Page 141: ... 1 0 3 Read the standard deviation σ and the average value Confirm that the values are within the allowable range 4 Set the output level and frequency of the 8657B and the speed of the TA120E according to the table below then perform the test in a similar fashion Test result Frequency of the Speed of the Standard Deviation Average Value 8657B TA120E σ Jitter Measured Value Measured Value Allowable...

Page 142: ...nts is described below Connecting the Instrument Check that the power switch is turned OFF on all instruments before connecting them Connect the output of the synthesized signal generator to the RF input connector of the TA120E through the 50 Ω terminator 8 65 7 B DATA TRIG TA120E Synthesized signal generator 8657B OUTPUT RF input connector 50 Ω terminator Instrument settings TA120E Measurement fu...

Page 143: ...ty of the data signal of the TA120E according to the table below then perform the test in a similar fashion Test result Polarity of the Data Signal Frequency of the Speed of the Standard Deviation Average Value 8657B TA120E σ Jitter Measured Value Measured Value Allowable Range Allowable Range 720 kHz 1 0 0 65 ns or less 684 ns to 705 ns 2 88 MHz 4 0 0 39 ns or less 170 ns to 177 ns 4 5 MHz 6 2 0 ...

Page 144: ...ing the Instrument Check that the power switch is turned OFF on all instruments before connecting them Connect the output of the synthesized signal generator to the RF input connector of the TA120E through the power divider and 50 Ω terminators The cables used to connect the power divider to the RF input and clock input connectors of the TA120E must be the same length 8 65 7 B DATA TRIG TA120E Syn...

Page 145: ...esult Slope of the data signal slope of the clock signal Phase difference between the data signal and Standard Deviation σ Jitter the clock signal Measured Value Allowable Range 5 0 ns 0 4 ns or less 10 0 ns 0 4 ns or less 30 0 ns 0 4 ns or less Slope of the data signal slope of the clock signal Phase difference between the data signal and Standard Deviation σ Jitter the clock signal Measured Valu...

Page 146: ... Instrument Check that the power switch is turned OFF on all instruments before connecting them Connect the output of the synthesized signal generator to the RF input connector of the TA120E through the 50 Ω terminator 8 65 7 B DATA TRIG TA120E Synthesized signal generator 8657B OUTPUT RF input connector 50 Ω terminator Instrument settings TA120E Equalizer test mode in the maintenance mode To ente...

Page 147: ...57B to 225 mVrms and the frequency to 300 kHz 2 Start up the TA120E in the maintenance mode and press the DATA key The characters EQLZ appear on the display and the TA120E enters the equalizer test mode 3 Press the key The peak value of the amplitude is measured 10 times and the average is shown on the display Every time the key is pressed the peak value is measured and the average value is shown ...

Page 148: ...the RF input connector of the TA120E DATA TRIG TA120E FG300 RF input connector OUTPUT Instrument settings TA120E Measurement function 3TCD N Polarity of the data signal Speed N 6 2 Gate 0 1 s Trigger mode MAN AUTO Slice level 0 000 V FG300 Output frequency 180 18 kHz Output voltage amplitude 6 VP P Phase 0 0 deg Offset voltage 0 0 V Output attenuator 1 10 Output waveform Arbitrary waveform A1 Arbi...

Page 149: ...voltage to 0 0 V and the output attenuator to 1 10 2 Set the polarity of the data signal of the TA120E to and the trigger mode to MAN 3 Set the TA120E in the statistical value debug mode and read the standard deviation σ Confirm that the value is within the allowable range The average value is reference value 4 Set the polarity of the data signal and the trigger mode of the TA120E according to the...

Page 150: ...erator to the RF input connector of the TA120E DATA TRIG TA120E FG300 RF input connector OUTPUT Instrument settings TA120E Measurement function D to C Polarity of the data signal Gate 0 1 s Trigger mode AUTO PLL ON FG300 Output frequency 74 04665 kHz Output voltage amplitude 0 3 VP P Phase 0 0 deg Offset voltage 0 0 V Output attenuator 1 1 Output waveform Arbitrary waveform A2 Arbitrary waveform d...

Page 151: ...o the FG300 Set the output frequency to 74 04665 kHz the output voltage amplitude to 0 3 VP P the phase to 0 0 deg the offset voltage to 0 0 V and the output attenuator to 1 1 2 Turn ON the PLL of the TA120E 3 Set the TA120E in the statistical value debug mode and read the standard deviation σ Confirm that they are within the allowable range The average value is reference value Test result Display...

Page 152: ... MHz Recommended instrument MS2601 Anritsu Synthesized signal generator Frequency range 100 kHz to 10 MHz Output level 720 mVrms or more Recommended instrument Synthesized signal generator 8657B Agilent Technologies 50 Ω terminator Recommended device 700976 YOKOGAWA The procedure for adjusting the equalizer using the recommended instruments is described below Connecting the Instrument Check that t...

Page 153: ...e peak value that is actually measured on the MS2601 at 300 kHz Consider the peak value at this point to be A 4 Set the output frequency of the 8657B to 5 16 MHz and the center frequency of the MS2601 to 5 16 MHz 5 Set the center frequency to the frequency of the peak value that is actually measured on the MS2601 at 5 16 MHz Consider the peak value at this point to be B 6 Turn the equalizer adjust...

Page 154: ...anel For the position of the circuit breaker see section 2 2 Circuit breaker operation If the TA120E becomes overloaded and over current flows through the internal circuits the power is shut off When the power is shut off the reset button pops out see figure below and the white indicator section becomes exposed White indicator section Reset button of the circuit breaker Resetting the circuit break...

Page 155: ... varies depending on the conditions of use Refer to the table below as a general guideline Contact your nearest YOKOGAWA dealer for replacement parts Parts Name Specifications and Recommended Replacement Period Equalizer relay Relay that operates on the ON OFF condition of the equalizer Electric switching life Approx 1 000 000 times at an input voltage of less than or equal to 1 V Mechanical life ...

Page 156: ... the input signal 100 kHz 40 V DC ACpeak 100 kHz frequency of the input signal 100 MHz 3 5 f 5 V DC ACpeak where f is a frequency in MHz Input sensitivity 1 100 mVP P Input range 5 V to 5 V Input frequency range 25 MHz to 60 MHz Duty 45 to 55 Trigger Trigger level Fixed to 0 V Trigger slope Select or Phase difference amount Range 0 0 ns to 40 0 ns of delay adjustment 4 Resolution 0 1 ns Equalizer ...

Page 157: ...trigger level timing error time base frequency stability x measured value 1 ns systematic error when the measurement function is set to 3T 1 Measured value under standard operating conditions as described in General Specifications after the warm up time has elapsed 10 3 Gate Arming and Inhibit Item Specification Gate Gate type Select event gate number of acquisitions of measured values fixed to 10...

Page 158: ...easured results available Unit Meter Display jitter ratio or ns jitter and average value Meter scale Select 10 or 20 for the full scale FS Indication accuracy of the meter 1 5 of FS Resolution of the display For unit 0 01 For ns unit 0 01 ns 10 5 Time Base Item Specification Internal reference frequency 50 MHz clock Frequency stability 100 ppm Aging 5 ppm year ...

Page 159: ...ficient α Range 0 0001 to 9 9999 resolution 0 0001 Correction coefficient β Range 9 999 to 9 999 resolution 0 001 Output level 2 0 V to 5 VDC Output level accuracy 2 3 10 mV Monitor output of the RF signal MONITOR OUT and monitor output of the equalized RF signal EQUALIZED RF Shares one connector Connector type BNC Output impedance 50 Ω typical value 1 Output coupling DC Output level 4 When the eq...

Page 160: ... to IEEE St d 488 1978 JIS C1901 1987 specifications Functional specifications SH1 AH1 T6 L4 SR1 RL1 PP0 DC1 DT1 and C0 Protocol Conforms to IEEE St d 488 2 1992 Code ISO ASCII code Mode Addressable mode Address 0 to 30 Clear remote mode Remote mode can be cleared using the LOCAL key except during Local Lockout ...

Page 161: ...ry Key lock Able to set key lock Standard Accessories Power cord 1 piece Rubber feet 1 set 2 pieces User s manual 1 piece this manual Safety standard Complying standard EN61010 1 Overvoltage Category Installation Category II 1 Pollution degree 2 2 Emission Complying standard EN55011 Group 1 Class A This is Class A product for industrial environment In a domestic environment this product may cause ...

Page 162: ...ounting surface Mounting dimensions of the EIA rack mount 480 1 460 1 485 1 463 1 485 1 462 1 100 0 2 149 24 5 0 0 3 100 0 2 89 0 2 89 0 2 149 24 5 21 8 21 8 0 0 3 132 5 0 0 3 132 5 0 0 3 6 8 6 8 6 8 6 8 17 Caution Make sure to have adequate support for the bottom of the instrument Allow at least 80 mm of space around the instrument for ventilation If not specified the tolerance is 3 However in ca...

Page 163: ... used in this manual vii correction coefficient 7 5 D D to C jitter 1 6 4 2 data 8 11 DATA key 2 1 data signal output 1 13 data signal output connector 2 2 dc hi 7 1 dc Lo 7 1 DC output 1 13 DC output connector 2 2 DC output filter 1 13 DC output mode 7 3 dcJdG 7 2 dcout 7 1 deadlock 8 9 decimal 8 11 detection of a cooling fan malfunction 1 14 determination level 7 4 determination output 7 3 digit...

Page 164: ...1 measurement item 1 5 measurement principle 1 4 MELE 8 19 MEMory Group 8 26 message 8 7 meter 2 1 meter display 1 12 meter test 9 8 minimum value 8 19 MODEL ii monitor output 1 13 7 6 monitor output connector 2 2 multi line message 8 6 multiplier 8 12 N name of part 2 1 name plate 2 2 number of data 8 27 numeric display 1 12 5 3 O ON OFF the numerical display 5 3 optional accessory iii output que...

Page 165: ...data signal 4 2 speed 1 5 standard accessory iii standard deviation 8 19 standard event register 8 38 status byte 8 37 status report 8 36 storage location 3 4 StorE 6 1 storing 6 1 SUFFIX code ii symbol vii synchronization using sequential command 8 13 system configuration 1 1 T talker function 8 3 time gate 1 9 4 8 transition filter 8 39 TRIG key 2 1 trigger 10 1 trigger error 10 1 trigger level ...

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