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ORTEC 566 Operating And Service Manual

Time-to-amplitude converter (tac)
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Model 566
Time-to-Amplitude Converter (TAC)
Operating and Service Manual
®
Printed in U.S.A.
ORTEC
Part No. 678950
0411
Manual Revision F

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Summary of Contents for ORTEC 566

  • Page 1 Model 566 Time-to-Amplitude Converter (TAC) Operating and Service Manual ® Printed in U.S.A. ORTEC Part No. 678950 0411 Manual Revision F...

  • Page 2: Warranty

    In the event ORTEC fails to manufacture or deliver items called for in this agreement or purchase order, ORTEC’s exclusive liability and buyer’s exclusive remedy shall be release...

  • Page 3: Table Of Contents

    CONTENTS WARRANTY ................ii SAFETY INSTRUCTIONS AND SYMBOLS .

  • Page 4: Safety Instructions And Symbols

    SAFETY INSTRUCTIONS AND SYMBOLS This manual contains up to three levels of safety instructions that must be observed in order to avoid personal injury and/or damage to equipment or other property. These are: DANGER Indicates a hazard that could result in death or serious bodily harm if the safety instruction is not observed.

  • Page 5: Safety Warnings And Cleaning Instructions

    SAFETY WARNINGS AND CLEANING INSTRUCTIONS DANGER Opening the cover of this instrument is likely to expose dangerous voltages. Disconnect the instrument from all voltage sources while it is being opened. WARNING Using this instrument in a manner not specified by the manufacturer could impair the protection provided by the instrument.

  • Page 7: Description

    TAC output signal is available. Reset also occurs if the start-to-stop time interval exceeds the range that The 566 Start input can be inhibited by a pulse ora is selected. dc level at the rear panel Gate In input connector.

  • Page 8: Specifications

    10 ns to 2% of full scale (whichever is greater) to 100%of full scale. In the ±6 V position the 566 is within the current allotment for a single NIM width when using a NIM- INTEGRAL NONLINEARITY ±...

  • Page 9: Outputs

    C/ 402D Bin and Power Supply (or equivalent), in before inserting or removing any modules. Monitor which the 566 will be installed, is intended for rack the dc voltages at the test points on the control mounting. If vacuum tube equipment is operated in...

  • Page 10: Linear Output Signal Connections And Terminating Impedance

    B.C. terminators with nominal values of 50, than event origins can be expected, use the lower 100, and 1000 . ORTEC stocks a limited quantity count rate as the start input to the 566. This assures of all but the 1000 terminators for your...

  • Page 11: Operating Instructions

    There are four front panel controls and two rear through this connector unless it is strobed. The panel controls on the 566. Of these, four are directly strobe condition is selected by a front panel switch. associated with the conversion of a start-to-stop When the output does occur, its peak amplitude will interval into an analog equivalent TAC output pulse.

  • Page 12: Start Circuitry

    The STOP input circuitry is identical to the START input circuitry. which begins the time-to-amplitude conversion in the 566. Two inputs, the START (front-panel) and the GATE IN (rear-panel) are used to control the start When the STOP input becomes active, an EOL flip- circuitry.
  • Page 13 (time window begins with the selected for this input via a PWB jumper. If the EXT STOP signal), the TAC output is not enabled, and mode is selected, the STROBE input triggers one- the 566 is reset. Fig. 3. Jumper Locations.

  • Page 14: Maintenance

    1. Check the module visually for possible damage. TAC. TEST EQUIPMENT The following test equipment 2. With the power turned off, install the 566 into a is recommended. Each test procedure refers to this NIM-Standard bin and power supply such as the list by the unit identification number for the required ORTEC 4001C/4002A.
  • Page 15 Fig. 6.1 and supply a start and stop pair of input signals with known time difference into the 566. Observe the TAC output. Then use the following procedures: Fig. 6.2. Test System for Checking Converter Resolution.
  • Page 16 DIFFERENTIAL LINEARITY MEASUREMENTS A converter busy interval is the measured time plus system for testing differential linearity of the 566 is 7 us for start-stop intervals within the selected time shown in the block diagram in Fig. 6.4. In this...
  • Page 17 Fig. 6.4. Test System for Checking Differential Linearity. 1. Select the 566 time range to be tested. 2. Calculate the maximum stop pulse repetition rate for the selected time range. This should be slightly lower than the reciprocal of the time range.

  • Page 18: Corrective Maintenance

    Fig. 6.6. Test System for Checking External Strobing Mode. 3. Use the internal strobe mode for the 566. Adjust the oscilloscope sweep as required to identify the TAC output pulses. 4. Adjust the delay for the strobe signal >500 ns to ensure that it will occur later than the full time range.

  • Page 19: Troubleshooting

    6.4. FACTORY REPAIR μ This instrument can be returned to the ORTEC factory for service and repair at a nominal cost. Our OUTPUT OFFSET CALIBRATION Potentiometer standard procedure for repair ensures the same...
  • Page 20 Block Diagram of the Model 566 Time-to-Amplitude Converter.
  • Page 21 *16 +12 V Coaxial *17 - 12 V Coaxial Spare bus Coaxial Reserved bus *41 117 V ac (neutral) Spare *42 High-quality ground Spare Ground guide pin Reserved Pins marked (*) are installed and wired in ORTEC’s 4001A and 4001C Modular System...

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