Kikusui KJM6335 Operation Manual
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Kikusui KJM6335 Operation Manual

Kikusui KJM6335 Operation Manual

Cd time interval jitter meter
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Part No. Z1-002-622, IA002856
Jul. 2009
OPERATION MANUAL
CD TIME INTERVAL JITTER METER
KJM6335

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Summary of Contents for Kikusui KJM6335

  • Page 1 Part No. Z1-002-622, IA002856 Jul. 2009 OPERATION MANUAL CD TIME INTERVAL JITTER METER KJM6335...
  • Page 2 If you find any incorrectly arranged or missing pages in this manual, they will be replaced. If the manual gets lost or soiled, a new copy can be provided for a fee. In either case, please contact Kikusui distributor/agent, and provide the “Kikusui Part No.” given on cover.
  • Page 3 • Use a fuse element having a shape, rating, and characteristics suitable for this product. The use of a fuse with a different rating or one that short circuits the fuse holder may result in fire, electric shock, or irreparable damage. KJM6335...
  • Page 4 Shows that the act indicated is prohibited. Is placed before the sign “DANGER,” “WARNING,” or “CAUTION” to emphasize these. When this symbol is marked on the product, see the relevant sections in this manual. Indicates a protective conductor terminal. Indicates a chassis(frame) terminal. Safety Precautions KJM6335...

  • Page 5: Safety Precautions

    Note that the provided power cord is not use with some products that can switch among different input power voltages or use 100 V and 200 V without switching between them. In such a case, use an appropriate power cord. KJM6335 Safety Precautions...
  • Page 6 Also handle carefully when relocating tall products as they can fall over easily. • Be sure the operation manual be included when the product is relocated. Safety Precautions KJM6335...
  • Page 7 , c h e c k i n g , c l e a n i n g , a n d calibration be performed. Service • Internal service is to be done by Kikusui service engineers. If the product must be adjusted or repaired, contact Kikusui distributor/agent.

  • Page 8: Table Of Contents

    Regenerated Clock Signal 3-8 3.4.3 Measuring to Use RF Signal Only 3-10 Inhibit Function 3-12 Setting the Contents of the Setup Memory 3-14 Symmetry and Slice Level 3-16 Adjusting Delay 3-20 Selection of Trigger Edge 3-22 3.10 Calibrating the Probe 3-24 Contents KJM6335...
  • Page 9 Output of Setup Memory Address Judgement Output Within-Measuring-Range Output Chapter 6 Maintenance ______________________ 6-1 Cleaning 6-1 Inspection 6-1 Calibration 6-2 Replacing the Backup Battery 6-2 Chapter 7 Specifications _____________________ 7-1 Appendix __________________________________ A-1 KJM6335 Block Diagram A-1 Index ______________________________________ I-1 KJM6335...
  • Page 10 VIII Contents KJM6335...

  • Page 11: Preface

    Preface Description The KJM6335 is capable of measuring the amount of jitter in CD players by the time interval method. Measurements of jitter in CD players and other equipment can be achieved using this instrument alone. Because the KJM6335 incorporates a the symmetry follow-up...
  • Page 12 Preface KJM6335...

  • Page 13: Setup

    When the meter is delivered to your site, first check it for damage during transit or to see if it is complete all the accessories required. If any damage or deficiency is found, please contact Kikusui distributor/agent. We recommend that all packing materials be saved, in case the product needs to be transported at a later date.

  • Page 14: Precautions For Installation

    ■ Do not locate the meter in a dusty environment. Dirt and dust in the meter may cause electrical shock or fire. Setup KJM6335...

  • Page 15: Precautions On Moving

    Moving the meter with cables connected may break the cables or cause the meter to fall, resulting in injury. ■ For transportation, use the special packing material for the meter. Transport the meter in its original package to prevent vibration and falls, which may damage the meter. KJM6335 Setup...

  • Page 16: Checking The Line Voltage And Fuse

    If a wrong fuse is used, replace it. Table 1-1 LINE VOLTAGE Check the line voltage to use from the LINE VOLTAGE table, adjust the voltage selector to the ▼ mark and push in the cover. Setup KJM6335...
  • Page 17 Remove cover by inserting the point of a flat head screwdriver in here. Then, adjust the voltage selector to the▼mark and push in the cover. (The figure illustrates a choice 90 V to 110 VAC.) Fig. 1-2 Removing Fuse Holder KJM6335 Setup...

  • Page 18: Ac Power Cord Connection

    Have a qualified engineer select the appropriate power cord. If obtaining the right power cord is difficult, contact Kikusui distributor/agent. • Do not use the power cord that comes with the product as a power cord for other equipment.
  • Page 19 Check that the POWER switch is turned off. Connect the AC power cord to the AC LINE connector on the rear panel. Use a AC power cord specified by Kikusui or one that has been selected by a qualified engineer. Insert the power plug to the outlet.

  • Page 20: Grounding

    3-pole power outlet upon which grounding construction has been performed. To 3-pole power outlet upon which grounding construction has been performed b. Connect terminal on the meter rear panel to the ground terminal (GND). To the ground terminal (GND) Fig. 1-4 Setup KJM6335...

  • Page 21: Names And Functions Of Controls

    TRIG EDGE TRIG EDGE TRIG EDGE TRIG EDGE DELAY DELAY AUTO AUTO MANUAL MANUAL METER SCALE METER SCALE KIKUSUI JAPAN CLASS 1.5 FS 1m A 50 (ns) 50 (ns) IMPEDANCE IMPEDANCE IMPEDANCE IMPEDANCE INHIBIT INPUT INHIBIT INPUT NORM NORM INVS...
  • Page 22 Pull the feet forward until you hear them click. • When you use the meter with the feet pulled CAUTION forward, do not place any article on it nor exert forces on it. Names and Functions of Controls KJM6335...
  • Page 23 Pressing this key with the 15 SHIFT key held down causes the instrument to be initialized. See 3.2, "Initialization". • MEDIA LED The selected media type is indicated by an LED at the left of the MEDIA key. KJM6335 Names and Functions of Controls...
  • Page 24 10 % (20 %) indication of the meter shows 100 % level. Since the internal circuit is AC coupling, the actual slice level changes with the duty ratio of an RF signal. Names and Functions of Controls KJM6335...
  • Page 25 RF signal is 100 %. When the SYMMETRY mode is set to MANUAL, the range in which the slice level can be varied is approximately 10 % to 90 %, KJM6335 Names and Functions of Controls...
  • Page 26 Minimum delay time applies when this variable resistor is turned fully counterclockwise, while the maximum delay time applies when it is turned fully clockwise. Adjust the variable resistor so that the jitter distribution is centered within the 2 PHASE MONITOR. Names and Functions of Controls KJM6335...
  • Page 27 The selected polarity is indicated by an LED to the left of the key. • INHIBIT INPUT terminal This BNC terminal is used to input an RF signal. The maximum input voltage is 10 Vpeak (DC + AC). For details, see 3.5 "Inhibit Function". KJM6335 Names and Functions of Controls...
  • Page 28 The judgement level can be individually set in the unit (% or ns) which is set with the 10 METER SCALE key. Even when you change the unit, the set value of each judgement level is retained. Names and Functions of Controls KJM6335...
  • Page 29 Lights up when the instrument is in the remote state controlled using the GPIB interface. If an invalid operation is performed (such as operating the panel in the key lock state), this LED blinks regardless of the GPIB condition. KJM6335 Names and Functions of Controls...
  • Page 30 The set input impedance is indicated by the LED to the left of the RF SIGNAL IMPEDANCE key. • RF SIGNAL INPUT terminal This BNC terminal is used to input an RF signal. The maximum input voltage is 4 Vpeak (DC + AC). 2-10 Names and Functions of Controls KJM6335...
  • Page 31 The set input impedance is indicated by the LED to the left of the CLOCK IMPEDANCE key. • CLOCK INPUT terminal This BNC terminal is used to input a clock signal. The maximum input voltage is 4 Vpeak (DC + AC). KJM6335 Names and Functions of Controls 2-11...
  • Page 32 Rear Panel 18 DIP switch • KEY LOCK Move this switch in the direction of the down(ON) to lock the keys on the front panel. 2-12 Names and Functions of Controls KJM6335...
  • Page 33 RF signal in the delay circuit. The output amplitude is 0.2 V to 0.3 Vp-p (terminated with 50 Ω). The output impedance is approx. 50 Ω. 26 GPIB switches (optional) Used to set the GPIB address of the meter. KJM6335 Names and Functions of Controls 2-13...
  • Page 34 1.5, "AC Power Cord Connection". Connects this terminal to electrical ground. •Always carry out grounding. For more information, WARNING see 1.6, Grounding. 32 Cord holders Wind the AC power cord around these holders when storing the KJM6335. 2-14 Names and Functions of Controls KJM6335...

  • Page 35: Operation

    Using the adjusting screw at the center of the meter, adjust mechanically pointer of the meter to indicate "0". Turn on the POWER switch. Front panel displays the status of the jitter meter in which it had been before it was last turned off. KJM6335 Operation...

  • Page 36: Initialization

    :0.03 s SYMMETRY :AUTO DELAY :AUTO METER SCALE :10 % INHIBIT INPUT :OFF INHIBIT POLARITY :NORM JUDGE LEVEL :8 % MEMORY :OFF (unlit) TRIG EDGE (RF) (rising) TRIG EDGE (CLK) (rising) IMPEDANCE (RF) :1 MΩ IMPEDANCE (CLK) :1 MΩ Operation KJM6335...

  • Page 37: Checking The Rom Version

    The three values indicated by the pointer show ver. x.xx. e.g.: if the meter pointer moves to 10, 1, 2, 3, and then to the measured value, the ROM version is ver. 1.23. KJM6335 Operation...

  • Page 38: Operation

    Operation 3.4.1 Measuring to Use RF Signal after Slicing and Regenerated Clock Signal CD player or other devices KJM6335 Clock- Pick-up regeneration Slicer circuit INHIBIT RF signal after slicing Clock signal Fig. 3-1 Connection Connect an RF signal after slicing and clock signal to the instrument from the CD player or other device, as shown in Fig.
  • Page 39 SYMMETRY mode set to MANUAL. If SYMMETRY is set to any mode other than MANUAL, accurate measurement is not possible, or measurement may be disabled. For detail, see 3.7,"Symmetry and Slice Level" and 2.1,"Front Panel". KJM6335 Operation...
  • Page 40 MANUAL, if AUTO mode is not suitable, as with cases in which the jitter distribution has two frequency peaks. When DELAY mode is set to MANUAL, turn the DELAY TIME variable resistor for optimum phase difference by observing the PHASE MONITOR. For detail, see 3.8 "Adjusting Delay". Operation KJM6335...
  • Page 41 KJM6335 Operation...

  • Page 42: Measuring To Use Rf Signal After Optical Pick-Up And Regenerated Clock Signal

    3.4.2 Measuring to Use RF Signal after Optical Pick- up and Regenerated Clock Signal CD player or other diveices KJM6335 Clock- Slicer regeneration Pick-up circuit INHIBIT RF signal after pick-up Clock signal Fig. 3-2 Connection Connect a RF signal after pick-up and regenerated clock signal to the instrument from the CD player or other device, as shown in Fig.
  • Page 43 (slicer circuit) in the CD player and those of the instrument will result in a difference in measured values with respect to 3.4.1 "Measuring to Use RF Signal after Slicing and Regenerated Clock Signal". KJM6335 Operation...

  • Page 44: 3.4.3 Measuring To Use Rf Signal Only

    3.4.3 Measuring to Use RF Signal Only CD player or other devices KJM6335 Clock- Pick-up regeneration Slicer circuit INHIBIT RF signal after slicing RF signal after pick-up Either of two Fig. 3-3 Connection Connect a RF signal after pick-up or slicing to the instrument from the CD player or other device, as shown in Fig. 3-3.
  • Page 45 CD player and those of the instrument will result in a difference in measured values with respect to 3.4.1 "Measuring to Use RF Signal after Slicing and Regenerated Clock Signal". • Set the MEDIA to the speed of the CD player measured. KJM6335 Operation 3-11...

  • Page 46: Inhibit Function

    High level of an input signal, and when INVS is lit, it is performed at the Low level of the signal. INHIBIT INPUT／  INHIBIT INPUT NORM POLARITY key INVS POLARITY INHIBIT INPUT INHIBIT  INPUT terminal MAX 10Vpk Fig. 3-5 3-12 Operation KJM6335...
  • Page 47 KJM6335 Operation 3-13...

  • Page 48: Setting The Contents Of The Setup Memory

    RECALL/STORE key is a recall status of the setup memory (the LED at the left of the key is lit), pressing the MEMORY RECALL/ STORE key causes the contents of the next setup memory address to be recalled. 3-14 Operation KJM6335...
  • Page 49 MEMORY SELECT key was pressed. Moreover, if you change the panel settings in the selection state, the LED goes off. MEMORY SELECT key MEMORY SELECT RECALL MEMORY RECALL/  STORE key STORE GPIB SHIFT LOCAL Fig. 3-6 KJM6335 Operation 3-15...

  • Page 50: Symmetry And Slice Level

    Fig. 3-7 shows a typical automatic symmetry level follow-up circuit. Changing the slice level of an input signal in this way varies the DC value of the signal obtained after the slicer. This allows for feedback control. 3-16 Operation KJM6335...
  • Page 51 RF signal is 100 %. However, as shown in the figure above, because the input of the slicer is AC coupled, there is a difference between the set slice level and the actual slicing level arising from the duty ratio of the input signal. KJM6335 Operation 3-17...
  • Page 52 Since the frequency bandwidth of the RF input is about 38 MHz, for thin pulses with pulse width below 15 ns, the amplitude may decrease, KJM6335 cannot measure jitter. 3-18 Operation KJM6335...
  • Page 53 The slice level is indicated relative to a meter value as shown below. 40% 50% 60% 100% Slice level Meter reading KIKUSUI JAPAN CLASS 1.5 FS 1mA Fig. 3-11 To alter the slice level, make the appropriate settings on the SYMMETRY LEVEL variable resistor.

  • Page 54: Adjusting Delay

    330˚ in Fig. 3-14. This results in a higher a standard deviation value, and jitter cannot be measured accurately. The phase difference must be adjusted so that the average phase difference between the two signals is located at 180˚. 3-20 Operation KJM6335...
  • Page 55 15 % or more or jitter distribution in two or more peaks may disable the correct action. Presence of brighter peaks at two locations PHASE MONITOR MEDIA PHASE MON TIME CONST 1 ( s ) SHIF SYMMETRY AUTO OFFSET MANUAL LEVEL DELAY Fig. 3-16 KJM6335 Operation 3-21...

  • Page 56: Selection Of Trigger Edge

    RF  signal  and  the  rise  of  the  clock  signal.    Then,  determine  the  RF signal  amount of jitter.  CLK signal   R F  Measure the time difference between the  Setting  fall  of  the  RF  signal  and  the  fall  of  the  clock  signal.    Then,  determine  the  RF signal  amount of jitter.    CLK signal Fig.3-17 3-22 Operation KJM6335...
  • Page 57 Note that measurement fails if both edges are selected at the same time. RF signal  After edge   detection Fig. 3-18 In this case, be sure to select the rising edge as the trigger edge of the RF signal of the meter. KJM6335 Operation 3-23...

  • Page 58: 3.10 Calibrating The Probe

    Phase-adjusting hole terminator 50 Ω BNC-BNC 10:1 probe (Kikusui P100-8CE or equivalent) Fig. 3-19 As shown in Fig. 3-19, connect the BNC-BNC cable and probe so that they run parallel, without forming large loops (which are vulnerable to external noise). Insert the adjusting screwdriver through the phase adjusting hole and correct the phase while monitoring square waves on the oscilloscope.

  • Page 59: Gpib Operation

      Chapter 4 The GPIB interface is factory option. Summary The GPIB interface supported by the KJM6335 is controlled by IEEE 488 standard interface. It's electrical and mechanical specifications conform to IEEE std488.1-1987. Use of the GPIB interface allows you to set the function of each panel other than the POWER and KEYLOCK switches, read the setting condition of a function, or read out the set values.

  • Page 60: Setting A Gpib Address

    4 and 1 to ON to set 6=4+2. Turn the meter power on again. The address set becomes valid after power on.   CR+LF ．  ．  ADRS Fig. 4-1 Example Address Setting • The address is set to "2" before delivery. NOTE GPIB Operation KJM6335...

  • Page 61: Gpib Basic Operation

    ■ Program message The text of data that is transmitted from the controller(computor or other controllers) to a device(KJM6335 or other devices) is called a program message. Program messages are grouped into two types: command messages, which carry device data, and query messages, which request response messages.
  • Page 62 ";", and " " (space). • When sending program messages in abbreviations, use abbreviations only. A mixture of abbreviations and standard program messages will produce errors. • A response message will be returned in abbreviated form. GPIB Operation KJM6335...

  • Page 63: Device Message

    Device Message *CLS Resets the status byte register and the event status register. ■ Program message *CLS KJM6335 GPIB Operation...
  • Page 64 The contents of the register will not be cleared if they are read out. They will not be cleared even it they are read with the *RST or *CLS message. e.g.: When the data is 30h. A value of #H30 is returned. GPIB Operation KJM6335...
  • Page 65 Returns the contents of the event status register. The individual bits are reset when read. ■ Program message *ESR? ■ Response message *ESR? ... Returns the contents of the event status register. e.g.: When the data is A0h. A value of #HA0 is returned. KJM6335 GPIB Operation...
  • Page 66 *IDN? Returns instrument model information. ■ Program message *IDN? ■ Response message The instrument returns model information in the following format: KIKUSUI ELECTRONICS CORP., KJM6335, 0, 1.0x Model name Company name Fixed to 0 Version number *RST Brings settings to the same condition as the initial mode set. The status and error registers will not be cleared.
  • Page 67 The contents of the register will not be cleared if they are read out. They will not be cleared even it they are read with the *RST or *CLS message. e.g.: When the data is 20h. A value of #H20 is returned. KJM6335 GPIB Operation...
  • Page 68 Returns the contents of the status byte register. The contents of the status byte register will be cleared by the *CLS message. ■ Program message *STB? ■ Response message e.g.: When the data is 60h. A value of #H60 is returned. 4-10 GPIB Operation KJM6335...
  • Page 69 To set the input impedance of CLOCK INPUT to 50 Ω. CLOC:IMP 50 ■ Response message CLOC:IMP?... Returns the current input impedance of CLOCK INPUT. e.g.: When the current input impedance of CLOCK INPUT is 1 MΩ. A value of 1M is returned. KJM6335 GPIB Operation 4-11...
  • Page 70 ■ Response message CLOC:TRIG:EDG?... Returns the current TRIG EDGE status of CLOCK INPUT. e.g.: If the polarity of the input trigger edge of the current CLOCK INPUT is set to falling edge( A value of NEG is returned. 4-12 GPIB Operation KJM6335...
  • Page 71 ■ Response message DEL:CON?… Returns the set value of the level applied when the DELAY mode is set to MANUAL. e.g.: When the set value of the level is +100 A value of 100 is returned. KJM6335 GPIB Operation 4-13...
  • Page 72 Table 4-6 e.g.: To set DELAY mode to AUTO. DEL:MOD AUT ■ Response message DEL:MOD? … Returns the current DELAY mode status. e.g.: When the current DELAY mode is MANUAL. A value of MAN is returned. 4-14 GPIB Operation KJM6335...
  • Page 73 No error Syntax error Out of range error Illegal keyword Illegal instruction Error buffer full None of the above Table 4-7 Error Messages e.g.: If an out of range error occurs. A value of -12 is returned. KJM6335 GPIB Operation 4-15...
  • Page 74 IMR?… Returns an indication of whether the measured value is 20 % or less. e.g.1: When the measured value is 20 % or less. A value of 1 is returned. e.g.2: When the measured value is over 20 %. A value of 0 is returned. 4-16 GPIB Operation KJM6335...
  • Page 75 Table 4-8 e.g.: To turn on the inhibit circuit. INH ON ■ Response message INH?… Returns the current status of the inhibit circuit. e.g.: When the inhibit circuit is currently on. A value of ON is returned. KJM6335 GPIB Operation 4-17...
  • Page 76 To set the polarity of inhibit circuit to INVERSE INH:POL INV ■ Response message INH:POL?… Returns the current polarity of the inhibit circuit. e.g.: When polarity of the inhibit circuit is currently NORMAL. A value of NORM is returned. 4-18 GPIB Operation KJM6335...
  • Page 77 When the current JITTER value is 23.4 ns. A value of 23.4 is returned. e.g.3: When no signal is input: When measurement is disabled, such as when the clock frequency is outside the specified range: A value of 100.00 or 100.0 is returned. KJM6335 GPIB Operation 4-19...
  • Page 78 When the current JITTER value is 12.3 %. A value of 12.30PCT is returned. e.g.2: When no signal is input: When measurement is disabled, such as when the clock frequency is outside the specified range: A value of 100.00PCT or 100.0NS is returned. 4-20 GPIB Operation KJM6335...
  • Page 79 Returns the judgement result of JUDGE. ■ Program message JUD? ■ Response message JUD?…Returns the JUDGE result. e.g.1: When the result is GO. A value of 1 is returned. e.g.: When the result is NOGO. A value of 0 is returned. KJM6335 GPIB Operation 4-21...
  • Page 80 When the JUDGE level is 8.5 % on the % scale. A value of 8.50PCT is returned. e.g.2: When the JUDGE level is 15.5 ns on the ns scale. A value of 15.5NS is returned. 4-22 GPIB Operation KJM6335...
  • Page 81 ■ Program message JUD:RES? ■ Response message JUD:RES?…Returns the JUDGE result. e.g.1: When the result is GO. A value of GO is returned. e.g. 2: When the result is NO GO. A value of NOGO is returned. KJM6335 GPIB Operation 4-23...
  • Page 82 To set media type to CDx1. MED:TYP CDX1 ■ Response message MED:TYP?… Returns the media type of the current object to be measured. e.g.: When the media type is set to CDx1. A value of CDX1 is returned. 4-24 GPIB Operation KJM6335...
  • Page 83 MEM:REC?… Returns the contents of the currently valid setup memory address. If any operation is carried out after a recall, "0" is returned as an invalid address. e.g.: When the address 4 is recalled. A value of 4 is returned. KJM6335 GPIB Operation 4-25...
  • Page 84 Stores the panel settings from the setup memory. ■ Program message Character   Space MEM:STO program data ■ Program data Storaging the PANEL setting Data type Character Character program data 1, 2, 3, 4 Table 4-13 e.g.: When the contents are stored to setup memory 1. MEM:STO 1 4-26 GPIB Operation KJM6335...
  • Page 85 When the current maximum value of meter scale is 10 %. A value of 10PCT is returned. e.g.2: When the current maximum value of \meter scale is 5 ns. A value of 5NS is returned. KJM6335 GPIB Operation 4-27...
  • Page 86 To turn ON the PLL clock-regeneration circuit. PLL ON ■ Response message PLL? … Returns the current status of the PLL clock-regeneration circuit. e.g.: When the PLL clock-regeneration circuit is currently ON. A value of ON is returned. 4-28 GPIB Operation KJM6335...
  • Page 87 When the PLL clock-regeneration circuit has locked on to an input signal. A value of LOCK is returned. e.g.2: If the PLL clock-regeneration circuit has not yet locked on to an input signal. A value of UNLOCK is returned. KJM6335 GPIB Operation 4-29...
  • Page 88 ■ Response message PORT1? … Reads out data from a 4-bit input port of EXT I/O and returns the value read. e.g.: When all 4-bit input ports are held at "H" A value of #H0F is returned. 4-30 GPIB Operation KJM6335...
  • Page 89 When all 4-bit output ports are held to "H" PORT2 #H0F ■ Response message PORT2? …Returns data output to a 4-bit output port of EXT I/O. e.g.: When all 4-bit output ports are held at "L" A value of #H00 is returned. KJM6335 GPIB Operation 4-31...
  • Page 90 To set the input impedance of RF SIGNAL INPUT at 50 Ω. RF:IMP 50 ■ Response message RF:IMP?…Returns the current RF SIGNAL INPUT impedance. e.g.: When the input impedance of RF SIGNAL INPUT is currently 1 MΩ. A value of 1M is returned. 4-32 GPIB Operation KJM6335...
  • Page 91 ■ Response message RF:TRIG:EDG?… Returns the current the polarity of input trigger edge status of RF SIGNAL INPUT. e.g.: When the trigger edge of RF SIGNAL INPUT is currently rising edge( A value of POS is returned. KJM6335 GPIB Operation 4-33...
  • Page 92 Table 4-19 e.g.: To set SYMMETRY mode to AUTO. SYM:MOD AUT ■ Response message SYM:MOD? …Returns the current SYMMETRY mode status. e.g.: When the SYMMETRY mode is currently in MANUAL. A value of MAN is returned. 4-34 GPIB Operation KJM6335...
  • Page 93 In panel operations, turning the SYMMETRY LEVEL variable resistor clockwise means setting an offset level in the direction of 2047. Turning it counterclockwise means setting it in the direction of -2048. e.g.: To set the SYMMETRY offset level to "0". SYM:OFFS:LEV 0 KJM6335 GPIB Operation 4-35...
  • Page 94 SYM:OFFS:LEV?… Returns the current symmetry offset/slice level. Returns an offset level when the SYMMETRY mode is OFFSET or a slice level when it is MANUAL. e.g.: When the symmetry offset/slice level is currently 2047. A value of 2047 is returned. 4-36 GPIB Operation KJM6335...
  • Page 95 RF signal. For detail, see 2.5 "Symmetry and Slice Level". 2047  (100%) 0  (50%) -2048  (0%) e.g.: When the slice level is currently 2047(100 %). A value of 2047 is returned. KJM6335 GPIB Operation 4-37...
  • Page 96 TIM:CON 1 ■ Response message TIM:CON? …Returns the current time constant for conversion into rms values. e.g.: When the time constant for conversion into rms values is currently 0.3 s. A value of 0.3 is returned. 4-38 GPIB Operation KJM6335...
  • Page 97 Under any of the above conditions, measurement is determined to be impossible. ■ Program message UIS? ■ Response message UIS? … Returns an indication of whether measurement is impossible. e.g.: When measurement is disabled. A value of 1 is returned. KJM6335 GPIB Operation 4-39...
  • Page 98 Details of Event Status Register and Event Status Enable Register Register name Explanation Not used with the KJM6335. Not used with the KJM6335. Any one of the following events has been encountered while CME (Command Error) decoding a message: • Syntax error in the message received •...
  • Page 99 Details of Status Byte Register and Service Request Enable Register Register name Explanation Not used with the KJM6335. Signifies the generation of a service request. (Request) This bit is reset when read by serial polling. ORed result of the status byte register and service request enabl (Master Summary Status) register, which is read by running *STB.
  • Page 100 • The individual bits of the status byte register and the NOTE service request enable register are set when they are 1 and are reset when they are 0. • *CLS resets the status byte register. 4-42 GPIB Operation KJM6335...

  • Page 101: Gpib Specifications

    １ ９   １ ８   １ ７   １ ６   １ ５   １ ４   １ ３   DIO５  DIO６  DIO７  DIO８  DAV ground NRFD ground NDAC ground IFC ground SRQ ground ATN ground Logic ground Fig. 4-3 GPIB Connector KJM6335 GPIB Operation 4-43...

  • Page 102: Sample Program

    Sample Program The following demonstrates a sample program in which the KJM6335 is GPIB-controlled, using Microsoft Visual Basic via a National Instruments GPIB board meeting NI-488.2 specifications. The program sets up each item, then displays a jitter value and judgment result once.
  • Page 103 Call ibwrt(rd, "JUD:RES?") 'Sends judgment information acquisition 'message. Dim strJudgment As String strJudgment = Space(128) Call ibrd(rd, strJudgment) 'Reads out judgment result and stores it to 'a variable. strJudgment = Left(strJudgment, ibcntl) MsgBox "Judgement = " + strJudgment KJM6335 GPIB Operation 4-45...
  • Page 104 4-46 GPIB Operation KJM6335...
  • Page 105 Control Using EXIT I/O Chapter 5 Outline The KJM6335 allows you to control the following six functions using the EXT I/O connector on its rear. Recalling the contents of the setup memory The panel settings stored in the setup memory can be recalled by external control.

  • Page 106: Control Using Ext I/O

    Output indicating whether jitter is within the IN MEAS RANGE measuring range OUT Judgement output NOGO OUT Judgement output Spare terminal (Leave this pin unconnected.) Return of setup memory address Ground Table 5-1 Pin Configuration of the EXT I/O Connector Control Using EXT I/O KJM6335...
  • Page 107 0 ms to 200 ms to the set time of TIME CONST. For details on how to set TIME CONST, refer to [7] TIME CONST in chapter 2, Names and Functions of Controls. KJM6335 Control Using EXT I/O...

  • Page 108: Recalling The Contents Of The Setup Memory

    1, 10, 13, 14, or 25) causes the RTN terminal to become "Low". Holding the RTN terminal "Low" for 100 ms or more causes the setup memory address to return to "1" and the contents of the resulting memory 1 to be recalled. Control Using EXT I/O KJM6335...
  • Page 109 100 ms or more or more "H" level "L" level terminal 100 ms or more 100 ms or more "H" level "L" level terminal 100 ms or more 100 ms or more Fig. 5-2 Timing Chart KJM6335 Control Using EXT I/O...

  • Page 110: Data Input/Output

    EXT I/O connector via GPIB. It also allows you to output data to the PO0 to PO3 terminals. The use of this 4-bit signal allows you to control a special equipment for KJM6335 or check its status. For details, see the PORT1 and PORT2 commands in chapter 3, "Operation".

  • Page 111: Judgement Output

    RANGE terminal of the EXT I/O connector. The measuring range of the instrument is within 20 %. If the measured value exceeds 20 %, a "Low" signal is output. If it is 20 % or less, a "High" signal is output. KJM6335 Control Using EXT I/O...
  • Page 112 Control Using EXT I/O KJM6335...

  • Page 113: Maintenance

    • Ruptures in the covering or any other defect in the WARNING power cord could cause electrical shock hazards. Discontinue using the power cable immediately. For purchasing accessories, please contact Kikusui distributor/ agent. KJM6335 Maintenance...

  • Page 114: Calibration

    Calibration This product was calibrated at shipment. However, recalibration is required after long-term usage. For calibration, please contact Kikusui distributor/agent. Replacing the Backup Battery An internal battery backs up the contents of the panel memory even if the instrument is turned off. If the panel settings in effect before the instrument was turned off and those after it is turned on differ, the battery should be replaced.

  • Page 115: Specifications

    The unit of jitter value is % or ns. Time difference RF signal CLOCK signal Duration of one period is regarded as 100 %. KJM6335 Specifications...
  • Page 116 75 % of inhibit period two signals) (at an inhibit period of 1 ms to 13.3 ms) Inhibit period - 250 μs (at an inhibit period of 500 μs to 1 ms) Maximum input voltage 10 Vpeak(DC＋AC) Input connector Specifications KJM6335...
  • Page 117 ±2 % of FS Residual jitter % indication 2 % or less ns indication 2 % of clock period or less Time constant for conversion 30 ms, 100 ms, 300 ms, 1 s into rms value KJM6335 Specifications...
  • Page 118 Rising edge, falling edge and both edges selectable CLOCK Rising edge and falling edge selectable Delay circuit Clock signal is delayed to adjust the phase of an RF signal. AUTO/MANUAL selectable Phase adjusting range in MANUAL mode: 0˚ to 360˚ Specifications KJM6335...
  • Page 119 Frequency response characteristics is mentioned by open-loop characteristics. However, frequency response characteristics of the KJM6335 is managed by close-loop characteristics equivalent to open-loop characteristics. Frequency response characteristics can be valid at reference clock of 4.3 MHz (CD standard speed mode).
  • Page 120 Output impedance Approx. 50 Ω CLOCK OUT Output connector Output amplitude 0.2 V/%、accuracy of ±0.15 V DC OUT Output impedance Approx. 600 Ω Output connector Output amplitude Approx. 20 mV/% JITTER OUT Output impedance Approx. 600 Ω Output connector Specifications KJM6335...
  • Page 121 Maximum input voltage -0.5 V to 5.5 V Output voltage range H:3.9 V to 5.0 V, L:0 to 0.4 V Output impedance 240 Ω to 290 Ω Maximum output current 10 mA Input/output connector 25-pin D-sub connector (female) Signal level KJM6335 Specifications...
  • Page 122 (EMC)*1 EMC Directive 2004/108/EC EN 61326-1 EN 61000-3-2 EN 61000-3-3 Under following conditions •Used the shielded cable which length is less than three meters when any signal cables are connected. Dimensions (mm) See "External Dimensions" Specifications KJM6335...
  • Page 123 The fuse holder is equipped with 1 A fuses for 90 V to 110 V / 110 V to 126 V or 0.5 A fuses for 194 V to 236 V / 207 V to 250 V for shipment. KJM6335 Specifications...
  • Page 124 External dimensions MAX 10 (0.39) MAX 20 (0.79) MAX 330 (12.99) MAX150 (5.91) [Unit: mm (inch)] 7-10 Specifications KJM6335...

  • Page 125: Appendix

     Appendix KJM6335 Block Diagram KJM6335 Appendix...
  • Page 126 Appendix KJM6335...

  • Page 127: Index

    JUDGE? 4-21 C C C C C JUDGE:LEVEL 4-22 JUDGE:RESULT? 4-23 Calibration 6-2 MEDIA:TYPE 4-24 Cleaning 6-1 MEMORY:RECALL 4-25 CLOCK MEMORY:STORE 4-26 IMPEDANCE key 2-11 METER:SCALE 4-27 CLOCK INPUT terminal 2-11 PLL 4-28 CLOCK TRIG EDGE key 2-11 PLL:STATUS? 4-29 Code holders 2-14 PORT1? 4-30 KJM6335 Index...
  • Page 128 M M M M M Fuse 1-4, 2-14 Measuring Based on the DVD G G G G G Book 3-4 MEDIA key 2-3 GPIB address 4-2 MEMORY RECALL key 2-9 GPIB connector 2-14, 4-43 MEMORY SELECT key 2-9 GPIB LOCAL key 2-9 METER 2-1 GPIB switches 2-13 METER SCAL key 2-7 Grounding 1-8 Modulation system 3-16 Index KJM6335...
  • Page 129 O T H E R S O T H E R S nal 2-13 RF SIGNAL TRIGGER EDGE 2-14 key 2-10 RMT 2-9 ROM version P-1, 3-3 S S S S S Sample Program 4-44 Service Request 4-41 Setup Memory setting 3-14 Slice Level 3-16 checking 3-19 Slice level feeding back 3-16 SLICED RF OUT terminal 2-13 KJM6335 Index...

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