Keithley 776 Instruction Manual
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Keithley 776 Instruction Manual

Keithley 776 Instruction Manual

Programmable counter/timer
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Model 776
Programmable Counter/Timer
Instruction Manual
A G R E A T E R M E A S U R E O F C O N F I D E N C E

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Summary of Contents for Keithley 776

  • Page 1 Model 776 Programmable Counter/Timer Instruction Manual A G R E A T E R M E A S U R E O F C O N F I D E N C E...
  • Page 2 WARRANTY Keithley Instruments, Inc. warrants this product to be free from defects in material and workmanship for a period of 1 year from date of shipment. Keithley Instruments, Inc. warrants the following items for 90 days from the date of shipment: probes, cables, rechargeable batteries, diskettes, and documentation.
  • Page 3 Model 776 Programmable Counter/Timer Instruction Manual Serial Prefix T74 ©1993, Keithley Instruments, Inc. All rights reserved. Cleveland, Ohio, U.S.A. Fifth Printing, April 2001 Document Number: 776-901-01 Rev. E...
  • Page 4 Addendum D (Document Number 776-901-02) ..........January 1999 Revision E (Document Number 776-901-01)............April 2001 All Keithley product names are trademarks or registered trademarks of Keithley Instruments, Inc. Other brand and product names are trademarks or registered trademarks of their respective holders.

  • Page 5: Safety Precautions

    Keithley products are designed for use with electrical signals that For maximum safety, do not touch the product, test cables, or any are rated Installation Category I and Installation Category II, as de- other instruments while power is applied to the circuit under test.
  • Page 6 Chassis connections must only be used as shield connections for leads, and input jacks, must be purchased from Keithley Instru- measuring circuits, NOT as safety earth ground connections. ments. Standard fuses, with applicable national safety approvals, may be used if the rating and type are the same.

  • Page 12: Configuration

    • Model 776 - Two-channel 225 MHz programmable counter/timer. The WARNING heading used in this manual explains • Model 776/2.4G - Same as above with 2.4 GHz Chan- dangers that might result in personal injury or death. nel C and TCXO time base.

  • Page 60: Channel C Sensitivity Check

    2.40000000 E+9 ±1 LSD 6. Again press [LPF] and then [x10] push-button and observe that the Model 776 still does not process readings. 5-10-3. Period A, Period A Averaged 7. Change synthesizer amplitude level setting to 250 mV Operation Check rms.
  • Page 141 Specifications are subject to change without notice. All Keithley trademarks and trade names are the property of Keithley Instruments, Inc. All other trademarks and trade names are the property of their respective companies. Keithley Instruments, Inc. 28775 Aurora Road • Cleveland, Ohio 44139 • 440-248-0400 • Fax: 440-248-6168 1-888-KEITHLEY (534-8453) www.keithley.com...

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