Keithley 610C Instruction Manual
  1. Manuals
  2. Brands
  3. Keithley Manuals
  4. Measuring Instruments
  5. 610C
  6. Instruction manual
Keithley 610C Instruction Manual

Keithley 610C Instruction Manual

Solid-state electrometers
Hide thumbs Also See for 610C:

Advertisement

Table of Contents

KEITHLEY
Model 610C, 610CR
Solid-State Electrometers
Instruction Manual
A GREATER MEASURE OF CONFIDENCE

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the 610C and is the answer not in the manual?

Questions and answers

Subscribe to Our Youtube Channel

Related Manuals for Keithley 610C

Summary of Contents for Keithley 610C

  • Page 1 KEITHLEY Model 610C, 610CR Solid-State Electrometers Instruction Manual A GREATER MEASURE OF CONFIDENCE...
  • 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 Keithley products are designed for use with electrical signals that The instrument and accessories must be used in accordance with its are rated Installation Category I and Installation Category II, as de ­...
  • Page 4 Keithley Instru­ The A symbol on an instrument indicates that the user should re ­ ments. Standard fuses, with applicable national safety approvals, fer to the operating instructions located in the manual.
  • Page 5 Model 610C, 610CR Solid-State Electrometers Instruction Manual Keithley Instruments, Inc. All rights reserved. Cleveland, Ohio, U.S.A. Third Printing, December 2001 Document Number: 29113 Rev. C...
  • Page 6 CONTENTS Section ___________________________________________________________________ Page SPECIFICATIONS ........................ii GENERAL DESCRIPTION ................... OPERATION ........................CIRCUIT DESCRIPTION ................... ACCESSORIES ........................12 SERVICING ........................13 CALIBRATION ........................22 REPLACEABLE PARTS ....................2 7 SCHEMATIC ..........................3 5...

  • Page 7: Table Of Contents

    ILLUSTRATIONS Figure No. Title Page Front Panel Controls ..............Rear Panel Controls ................ Front Panel Controls, Model 610CR ........Rear Panel Controls , Model 610CR ........Guarded Voltage Measurement ............. Current Measurements, Loading Error ........Galvanometric Measurements ............. Resistance Measurements ............... Recorder Output, 100 mV Divider Network ......
  • Page 8 Model 610C/610CR Specifications AS A VOLTMETER AS AN OHMMETER RANGE: 0.001V full scale to 100V in eleven lx and 3x ranges. RANGE: 100Ω full scale to 10 14 Ω in 25 linear 1 x and 3x ranges. ACCURACY: ±1% of full scale on all ranges, exclusive of noise ACCURACY: ±3% of full scale on 100 to 1 0 -10 Ω...
  • Page 9 Fast warm up is an inherent characteristic of this Electrometer. It can be used well within 30 min ­ The Keithley Model 610C Electrometer is a versa ­ utes of a cold start on the most sensitive range and tile, completely solid-state instrument which measures almost immediately on less sensitive ranges.

  • Page 10: Front Panel Controls

    TABLE 2 Front Panel Controls and Terminals Functional Description Control Paragraph RANGE Switch Sets the parameter to be measured: VOLTS, AMPERES, OHMS, or 2 -3a (S106) COULOMBS. Also sets the particular range for a given parameter. MULTIPLIER Switch Sets the full-scale meter sensitivity. When used with AMPERES, 2 -3a (S107)

  • Page 11: Front Panel Controls, Model 610Cr

    RANGE METER SWITCH ZERO CONTROL SWITCH S106 FINE R142 S109 ZERO CONTROL MULTIPLIER ZERO CHECK MEDIUM S101 SWITCH S107 SWITCH S103 ZERO CONTROL POWER FEEDBACK GROUND INPUT COARSE S10 2 NEON SWITCH J1 02 J101 DS101 S105 FIGURE 3. Front Panel Controls, Model 610CR. OUTPUT 1MA-3V FUSE...
  • Page 12 Drifting, post adapter may be used. though, can occur for several hours. When the Model 610C is used on the most sensi ­ Although the offset current of the Electrometer tive current range with the FEEDBACK Switch at FAST, is much below that found in conventional voltmeters, some insulators —...
  • Page 13 ’ The input voltage on the rear panel of the instrument. Connect the drop of the 610C in the NORMAL mode is a function of remaining alligator clip leads as shown in Figure 5. the Multiplier setting and therefore the loading...
  • Page 14 FIGURE 5. Guarded Voltage Measurement I s = E S /R S ERROR = Is - I M ¾ERROR = X 100 IFE IK «E S , THEN I M = Ig. FIGURE 6, Current Measurements, Loading Error. FIGURE 7. Galvanometric Measurements, FIGURE 8.

  • Page 15: Resistance Measurements

    For this measurement the 610C is used in the NORMAL NOTE mode with the RANGE switch set to AMPERES. circuit connections are shown in Figure 8.
  • Page 16 Analog Output (J103), This output can be used is 3V. Therefore, the total divider resistance should to monitor the 610C using either voltage or current be 3000 ohms. The voltage drop across the 100Ω re ­ responding recorders. sistor is then adjusted for 100m V by adjusting the 1MA CAL control.

  • Page 17: Voltmeter Configuration, Normal Mode

    The internal circuitry is arranged such that a full- The Keithley Model 610C is basically an extreme ­ ly stable and linear d c voltmeter with a full-scale scale input voltage (e i ) results in exactly a 1 mil ­...
  • Page 18 Q101 and Q102, in a tance measurements (FEEDBACK Switch in NORMAL posi ­ differential configuration. The gate of Q102 is re ­ tion), the Model 610C uses a constant-current, voltage ­ turned to amplifier common, the unity-gain output. drop circuit. Refer to Figure 12.
  • Page 19 FIGURE 11. Ammeter Configuration, FAST Mode. FIGURE 12. Ohmmeter Configuration, NORMAL Mode.
  • Page 20 GENERAL. The following Keithley accessories Resistivity can be determined by measuring the can be used with the Model 610C to provide additional current through a sample with a known voltage convenience and versatility. impressed. The measurement can be made most conveniently when a set of electrodes are used that 4-2.
  • Page 21 GENERAL. Section 5 contains the maintenance and 5-3. PARTS REPLACEMENT. troubleshooting procedures for the Model 610C Elec ­ trometer. Follow these procedures as closely as pos ­ The Replaceable Parts List in Section 7 des ­ sible to maintain the performance of the instrument.
  • Page 22 Adjust the COARSE ZERO Switch, back loop by removing the complimentary input tran ­ S102 (Figure 2), to bring the Model 610C into balance. sistors Qlll and Q112. This allows each stage of the If this does not work, continue to check the circuits.

  • Page 23: Chassis, Side View

    Q103 and Q104. Check Q103 and Q104 by removing shorts in the base circuit of Q107 and Q108. them and adjusting again for null. If null is now reached, replace the transistor pair with a new pair. Connect Model 153 to the collector of Q109 . Adjust the FINE ZERO Control for null.
  • Page 24 FIGURE 14. Chassis, Side View.
  • Page 25 FIGURE 15. Circuit Board, PC183.
  • Page 26 FIGURE 16. Printed Circuit Board, PC-186.
  • Page 27 FIGURE 17. Switch, MEDIUM ZERO, S101. DECK Z PIN 7 DECK I FIGURE 18. Switch, COARSE ZERO, S102.
  • Page 28 FIGURE 19. Switch, RANGE S106.
  • Page 29 FIGURE 20. Switch, Multiplier, S107.
  • Page 30 Zero the meter on the .001 Multiplier Switch setting. Then set the Mul ­ tiplier Switch to 1; apply 1 volt ±0.05 % with the Keithley Model 260 Nanovolt Source to the Model 610C 6-2, CALIBRATION SCHEDULE. INPUT Receptacle. Monitor the output with Keithley Check offset current (paragraph 6-8) at regular Models 160 or 163DVM and a 3:1 adapter.
  • Page 31 Zero check the unit and connect the output to a Hewlett-Packard Model 3400A RMS Voltmeter. Make two drift runs with the Model 610C to de ­ termine time and temperature stability individually. Set the METER Switch to CENTER ZERO and zero For each run allow the Electrometer to warm up for 1/2 the Model 610C on the 1 millivolt range.
  • Page 32 Keithley Model 5155 10 ohm standard to the other adjustments are made. If accuracy is verified over all ranges, the Model 610C should be able to meet Model 610C input. Set the Multiplier Switch to the all specifications.
  • Page 33 -3 dB of the 20 Hz 2 662 null remains the same. volt rms output. Apply +100 volts to the Model 610C input with Zero the Model 602 on the 3 volt range and change the Voltage Supply.
  • Page 35 REPLACEABLE PARTS 7-1. REPLACEABLE PARTS LIST. The Replaceable Parts and serial number, the Keithley Part Number, the cir ­ List describes the components of the Models 610C and cuit designation and a description of the part. 610CR. The List gives the circuit designation, the structural parts and those coded for Keithley manufac ­...
  • Page 36 CAPACITORS (Cont'd.) Circuit Mfg. Mfg. Keithley Fig. Desig. Value Rating Type Code Part No. Part No. Ref. C114 .033 µF 200V 97419 M2WR-.033M C143-.033M C115 .033 µF 200V 97419 M2WR-.033M C143-.033M C116 150 pF 1000V CerD 71590 DD — 151...
  • Page 37 2, 4, 14 Knob, 1MA CAL Control 80164 KN-58 T101 Transformer 80164 TR-70A Top Cover Assembly (610C) 80164 17972B Feet, plastic, 4 required (610C) 80164 FE-5 Handle (610C) 80164 HH-18 Bottom Panel (610C) 80164 21540C Bottom Panel (610CR) 80164 22284C...
  • Page 38 RESISTORS Circuit Mfg. Mfg. Keithley Fig. Desig. Value Rating Type Code Part No. Part No. Ref. R101 10 MΩ 10%, 1/2 W Comp 01121 R1-10M R102 10 Ω 1%, 10 w 91637 RS-10 R34-10 R103 100 Ω 1%, 10 W...
  • Page 39 R61-330 R189 27 kΩ 10%, 1/4 W Comp RC07 44655 R76-27K * Nominal value, factory set. ** Part of input plug-in board, replace only by ordering Keithley Part Number 23733A. TRANSISTORS Circuit Mfg. Keithley Fig. Desig. Number Code Part No.

  • Page 40: Chassis Assembly

    Chassis Assembly Parts List Item Keithley Description Part No. Top Cover Assembly 179 72B Top Cover (Sheet Metal) 17076B Handle Assembly HH-18 Screw , #8-32x1/4 ” , slotted #8-32x1/4 slotted, P.H. Bottom Cover Assembly 21540C Bottom Cover (Sheet Metal) 21541C...
  • Page 42 195 McGregor Street Los Angeles, Calif. 90003 Manchester, N.H. 03102 44655 Ohmite Mfg. Co. 3601 Howard St. 80164 Keithley Instruments, Inc. 02660 Amphenol Corp. Skokie, Ill. 60476 28775 Aurora Road 2801 South 25th Ave. Cleveland, Ohio 44139 Broadview, Illinois 60153 56289 Sprague Electric Co.
  • Page 43 35/36...
  • Page 44 KEITH LEY Service Form Model No. ____________________ Serial No. _____________________ Date ____________ Name and Telephone No. ___________________________________________________________ Company _________________________________________________________________________ List all control settings, describe problem and check boxes that apply to problem. ___________________________________ О О Intermittent Analog output follows display Particular range or function bad;...
  • Page 47 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. KEITH LEY 28775 Aurora Road • Cleveland, Ohio 44139 • 440-248-0400 • Fax: 440-248-6168 Keithley Instruments, Inc.

This manual is also suitable for:

610cr

Table of Contents