Kikusui KJM6310 Operation Manual
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Kikusui KJM6310 Operation Manual

Kikusui KJM6310 Operation Manual

Time interval jitter meter
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Part No. Z1-003-062, IA003161
Jan. 2004
OPERATION MANUAL
Time Interval Jitter Meter
KJM6310

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Summary of Contents for Kikusui KJM6310

  • Page 1 Part No. Z1-003-062, IA003161 Jan. 2004 OPERATION MANUAL Time Interval Jitter Meter KJM6310...
  • Page 2 If you find any incorrectly arranged or missing pages in this manual, they will be replaced. If the manual it 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: Safety Symbols

    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. KJM6310 Safety Symbols I...

  • Page 4: Safety Precautions

    • • Cover • There are parts inside the product which may cause physical hazards. Do not remove the external cover. Installation • When installing products be sure to observe "1.2 Installation" described in this manual. II Safety Precautions KJM6310...
  • Page 5 Service • Internal service is to be done by Kikusui ser- vice engineers. If the product must be adjusted or repaired, contact Kikusui agent/ distributor.

  • Page 6: Overvoltage Category

    fixed installation. Overvoltage category IV • Equipment of overvoltage IV is for use at the origin of the installation. Example of such equipment are electricity meters and primary overcurrent protection equipment. IV Overvoltage category KJM6310...
  • Page 7 Overvoltage category Overvoltage category Switchboard Drop wire Indoor wiring Equipment AC line Transformer Receptacle Overvoltage category Overvoltage category KJM6310 Overvoltage category V...
  • Page 8 VI Overvoltage category KJM6310...

  • Page 9: Table Of Contents

    1.2 Installation - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1-2 1.3 Precautions When Moving the KJM6310 - - - - - - - - - - - - - - - 1-4 1.4 Connecting the DC Power Supply- - - - - - - - - - - - - - - - - - - - 1-4...
  • Page 10 6.2 General Specifications - - - - - - - - - - - - - - - - - - - - - - - - - - - 6-3 6.3 External Dimensions - - - - - - - - - - - - - - - - - - - - - - - - - - - - 6-4 VIII Contents KJM6310...

  • Page 11: Preface

    Product Overview The KJM6310 is an instrument used to measure jitters of CDs. It can measure the RF to CLOCK jitter by the time interval method. The KJM6310 can be used for the development, adjustment, and inspection of optical pickups.
  • Page 12 P-2 Preface KJM6310...

  • Page 13: Chapter 1 Setup

    Chapter 1 Setup This chapter describes the procedures of unpacking and preparation of the KJM6310 before use. Checking the Package Contents When you receive the product, check that all accessories are included and that the product and accessories have not been damaged during transportation.

  • Page 14: Installation

    Avoid locations where the KJM6310 is exposed to high temperature or direct sunlight. Do not place the KJM6310 near a heater or in areas subject to drastic temperature changes. Operating temperature range: 0 °C to 40 °C Spec guaranteed temperature range: 15 °C to 35 °C...
  • Page 15 Storage humidity range: 0 to 90 % RH (no condensation) Condensation may occur even within the operating humidity range. In such cases, do not use the KJM6310 until the condensation dries up completely. Do not place the KJM6310 in a corrosive atmosphere.

  • Page 16: Precautions When Moving The Kjm6310

    When moving the KJM6310 to the installation location or when transporting the unit, note the following points. Always turn off the POWER switch. Moving the KJM6310 with the power on may result in electric shock or damage. When moving the KJM6310, remove all wires that are connected.

  • Page 17: Chapter 2 Names And Functions Of Parts

    If an error is detected during the self-test, the LED changes to blinking. In addition, the LED illuminates for a certain period when a communication error occurs on the RS-232C interface. KJM6310 Names and Functions of Parts 2-1...

  • Page 18: Rear Panel

    The output impedance is approximately 600 Ω. approximately 600 Ω. Function setup switches These switches are used to set DC INPUT connector the functions of the KJM6310. DC INPUT connector Used to connect the input power cable. RS-232C connector Compatible plug...

  • Page 19: Chapter 3 Operation

    To measure time intervals using two signals, connect the clock signal to the CLOCK INPUT connector. Refer to the figures to connect the DUT to the KJM6310 and set the functions according to the input signal. 1. Time interval jitter measurement using sliced RF signal and regen-...
  • Page 20 Function setup switches SYMMETRY AUTO (or AUTO+OFST) CLOCK EDGE Any RF EDGE positive either negative Use RS-232C control Do not turn both RF EDGE switches to (ON). KJM6310 CD player, etc. Clock Pickup Slicer regeneration circuit Pickup output signal Clock signal Fig.3-2...
  • Page 21 3. Time interval jitter measurement using only sliced RF signal Function setup switches SYMMETRY MANUAL CLOCK EDGE Any RF EDGE positive either negative Do not turn both RF EDGE switches to (ON). KJM6310 CD player, etc. Clock Pickup Slicer regeneration circuit Sliced RF signal Fig.3-3 KJM6310 Operation 3-3...
  • Page 22 SYMMETRY AUTO (or AUTO+OFST) CLOCK EDGE Any RF EDGE positive either negative Use RS-232C control Do not turn both RF EDGE switches to (ON). KJM6310 CD player, etc. Clock Pickup Slicer regeneration circuit Pickup output signal Fig.3-4 3-4 Operation KJM6310...

  • Page 23: Function Setup

    Function Setup There are two methods for setting the internal functions of the KJM6310. 1. By using the function setup switches on the rear panel. 2. By transmitting messages via the RS-232C interface. The table below shows the possible combinations of the setup through the function setup switches.

  • Page 24: Trigger Edge Selection

    Trigger Edge Selection The KJM6310 measures the time difference between the RF signal and clock signal and expresses the error as standard deviation. When measuring the time difference between the RF signal and clock sig- nal, the interval (from one edge to another edge of each signal) over which the time difference is measured is specified using the function...
  • Page 25 • If the RF signal to be measured is already converted to one edge, be sure to set the trigger edge of the RF signal of the KJM6310 to rising or falling to match the signal. Measure- ment is not possible if both edges are selected.

  • Page 26: Symmetry And Slice Level

    DC component when the RF signal is sliced. Operation when SYMMETRY mode is set to AUTO The KJM6310 is equipped with a function that automatically controls the slice level to follow the symmetry level of the RF signal to correct the RF signal asymmetry.
  • Page 27 100 %. However, as shown in Fig. 3-8, the slicer input is AC coupled, and a difference appears between the preset slice level and the actual slice level depending on the duty cycle of the input signal. KJM6310 Operation 3-9...
  • Page 28 In addition, the frequency bandwidth of the RF input is approxi- mately 60 MHz. Therefore, operation will fail on narrow pulses of which the pulse width falls below 15 ns, because of amplitude drop- outs. 3-10 Operation KJM6310...

  • Page 29: Delay Adjustment

    180°. The delay circuit is used to make this adjustment. The delay circuit places an appropriate delay on the clock signal, and the average phase difference between the two signals can be made 180°. KJM6310 Operation 3-11...
  • Page 30 2. Send a DELAY CONTROL message through the RS-232C interface. 3. Vary the value of the command so that the DC voltmeter reading is as close to 0 as possible. The phase difference is at the optimum value when the voltmeter reading is 0 V. 3-12 Operation KJM6310...

  • Page 31: Chapter 4 Rs-232C Control

    PC. Use a RS-232C cross cable to make the con- nection. The baud rate of the KJM6310 can be set to 9 600 bps or 19 200 bps using the switches on the rear panel. (The setting is read during power up.)

  • Page 32: Messages And Terminators

    KJM6310. To notify that the processing of a message is complete, the KJM6310 sends a response message to the computer (referred to as an acknowl- edge message) in response to each program message sent to the KJM6310.

  • Page 33: Device Messages

    Device Messages Device messages refer to program messages and response messages that the KJM6310 supports. This section describes the device messages one by one. Program messages are not case-sensitive. Response messages are returned in upper-case. Abbreviated form Abbreviations are provided for program messages and some of the character program data.
  • Page 34 Queries the model name and ROM version of the KJM6310. Program message • Syntax Query message: *IDN? Response message In response to *IDN?, the model name of the KJM6310 is returned as shown in the following example: (Manufacturer: KIKUSUI, model: KJM6310, and version: 1.00) Comma separator KIKUSUI ELECTRONICS CORP.,KJM6310,0,1.00...
  • Page 35 Integer Values: –128 to +127 Resolution: (Example) Set the level to 64 when the delay is set to MANUAL DEL:CON 64 Response message Returns the current setting in response to DEL:CON? in integers (–128 to +127). KJM6310 RS-232C Control 4-5...
  • Page 36 Queries the error code from the error queue. Program message • Syntax Query message: ERROR? ERR? Response message Returns the current error code in response to ERR?. (Example) When the error is a syntax error. Returns –11. 4-6 RS-232C Control KJM6310...
  • Page 37 * If measurement is not possible such as when there is no signal input or the clock frequency is outside the specifications, 100.00 is returned. Program message • Syntax Query message: JITTER? JIT? Response message Returns the jitter value being measured in percentages in response to JIT?. KJM6310 RS-232C Control 4-7...
  • Page 38 Query message: PLL? • Program data Data format: Characters Values: PLL ON OFF: PLL OFF (Example) Turn on the PLL. PLL ON Response message Returns the current setting in response to PLL? in characters (ON or OFF). 4-8 RS-232C Control KJM6310...
  • Page 39 Command message: RF:TRIGGER:EDGE_<{POSITIVE |NEGATIVE|EITHER}> RF:TRIG:EDG_<{POS|NEG|EIT}> Query message: RF:TRIGGER:EDGE? RF:TRIG:EDG? • Program data Data format: Characters Values: POS: ↑ (Rising) NEG: ↓ (Falling) EIT: Rising or falling (Example) Set the trigger edge polarity to POS. RF:TRIG:EDG POS KJM6310 RS-232C Control 4-9...
  • Page 40 Sets the symmetry offset or slice level. Or, queries the current set- ting. This message is valid only when the symmetry mode is OFFSET or MANUAL. The specified value is applied to the symmetry off- set or slice level depending on the symmetry mode. 4-10 RS-232C Control KJM6310...
  • Page 41 600. Thus, the returned value is between –300 and +300. • Syntax Query message: SYMMETRY:SLICE:LEVEL? SYM:SLIC:LEV? Response message Returns the current setting in response to SYM:SLIC:LEV? in real numbers (–300 to +300). KJM6310 RS-232C Control 4-11...
  • Page 42 (0.01, 0.1, or 1). UIS? Queries whether measurements cannot be made. Program message • Syntax Query message: UIS? Response message Returns the current setting in response to UIS? in real numbers (0 (yes) or 1 (no)). 4-12 RS-232C Control KJM6310...

  • Page 43: Sample Program

    Sample Program '================================================================ ' KJM6310 Sample Program ' A sample program using Microsoft Visual Basic 6.0. After setting the parameters, the jitter measurement value (%) is displayed once. ' The VISA library (VISA COM software) is used for RS-232C control.
  • Page 44 Call SendMessage(m_session, "PLL ON") ' PLL clock regen. ' circuit = ON strAck = ReceiveMessage(m_session) Call SendMessage(m_session, "SYM:MOD AUT")' SYMMETRY mode = AUTO strAck = ReceiveMessage(m_session) Call SendMessage(m_session, "DEL:MOD AUT") ' DELAY mode = AUTO strAck = ReceiveMessage(m_session) 4-14 RS-232C Control KJM6310...
  • Page 45 Set m_session = Nothing End If End Sub '------------------------------------------------------------ Function SendMessage(session As IMessage, strDat As String) ' Check if the VISA session is correctly opened If session Is Nothing Then MsgBox MSG, vbExclamation Exit Function KJM6310 RS-232C Control 4-15...
  • Page 46 = session.ReadString(256) ' CR+LF Removed strRd = Left(strRd, InStr(1, strRd, vbLf) - 2) ReceiveMessage = strRd Exit Function ERROR_HANDLER: Dim strVisaCode As String strVisaCode = "VISA Error: 0x" & Hex(Err.Number) MsgBox Err.Description, vbExclamation, strVisaCode End Function 4-16 RS-232C Control KJM6310...

  • Page 47: Chapter 5 Maintenance

    If a break is found, stop using it immediately. To purchase accessories, contact your Kikusui agent or distributor. Calibration The KJM6310 is calibrated at the factory before shipment. However, periodic calibration is necessary due to changes that occur after extended use.

  • Page 48: Troubleshooting

    The symptoms listed below may not necessarily mean a malfunction. Check the KJM6310 before requesting repairs. If the remedy does not solve the problem or if your case does not match any of the items, contact your Kikusui agent. Table 5-1 Symptom...
  • Page 49 Check the edge settings. See “ Rec- ommended setup”, on page 3-7. After power Is the RF signal discon- Internal data error has occurred. on, the ERROR nected? Request for repairs. LED blinks at 1-s intervals. KJM6310 Maintenance 5-3...
  • Page 50 5-4 Maintenance KJM6310...
  • Page 51 Chapter 6 Specifications This chapter describes the electrical and mechanical specifications of the KJM6310. The specifications apply to the following conditions. • Warm-up time: 30 minutes • Temperature: 15 °C to 35 °C • Humidity: 20 % RH to 85 % RH (no condensation) Electrical Specifications...
  • Page 52 Specification Guideline Ver.1.0 May 1999. Output section DC OUT Output amplitude 0.2 V/% and accuracy of ±0.15 V (when open) Output impedance Approx. 600 Ω JITTER Output amplitude 20 mV/% (when open) Output impedance Approx. 600 Ω 6-2 Specifications KJM6310...
  • Page 53 Approx. 45 W × 175 H × 240 D) Weight Approx. 1 kg Accessories Operation manual 1 pc. Stand 1 set (2 pcs.) Attachment screws 4 pcs. (M3 × 8 mm) DC plug 1 pc. (1.5 m) KJM6310 Specifications 6-3...
  • Page 54 External Dimensions MAX15 210.5 MAX240 4-M3 14.5 29.2 4-M3 [Unit: mm] 6-4 Specifications KJM6310...

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