Keithley 3706A, User Manual

Page 1: ...User s Manual 3762 900 01 Rev A July 2017 P3762 900 01A 3762 900 01A www tek com keithley Model 3762 10 Channel High Voltage Multiplexer Card...

Page 2: ...nts is strictly prohibited These are the original instructions in English All Keithley Instruments product names are trademarks or registered trademarks of Keithley Instruments Other brand names are t...

Page 3: ...be connected to mains These instruments will be marked as category II or higher Unless explicitly allowed in the specifications operating manual and instrument labels do not connect any instrument to...

Page 4: ...damage the instrument Such damage may invalidate the warranty The CAUTION heading with the symbol in the user documentation explains hazards that could result in moderate or minor injury or damage th...

Page 5: ...lation 2 2 General operation 3 1 General operation 3 1 Safety hazards 3 1 Wire selection and preparation 3 2 Wiring 3 3 Installation and removal 3 3 Operation considerations 4 1 Cables 4 1 External fa...

Page 6: ...Table of contents Model 3762 10 Channel High Voltage Multiplexer Card User s Manual Index I 1...

Page 7: ...for shielding or as a guard driven from a single instrument Guards may be isolated by removing jumpers installed at each input Multiple switched guard circuits can be achieved by removing the jumper a...

Page 8: ...are requirements switching card installation instructions and a brief description of front panel and remote interface operation 3700AS 900 01 Series 3700A System Switch Multimeter User s Manual Inform...

Page 9: ...l with a user selectable shield or driven guard connection The output connection and the input connections have screw terminals with a maximum allowable wire size No 16 The schematic representation is...

Page 10: ...u are qualified Failure to recognize and observe standard safety precautions could result in personal injury or death due to electric shock Unpack and inspect The 3762 was inspected both electrically...

Page 11: ...are provided internal to the card Ensure that any signals connected to the multimeter or mainframe are limited to the allowable ratings of the device For more information about wire connections see Wi...

Page 12: ...gn the card s edge into the slot s card guide and slide in the card For the last inch or so press in firmly to mate the card connector to the mainframe connector 5 On each side of the card there is a...

Page 13: ...Section 2 Installation and connections Model 3762 10 Channel High Voltage Multiplexer Card User s Manual 2 4 3762 900 01 Rev A July 2017...

Page 14: ...k connections while the equipment is powered on User supplied lethal voltages may be present on the PC board or the connections Turn off the equipment from the front panel disconnect the main power co...

Page 15: ...ounting screws for the card are securely connected to the system switch mainframe chassis in order to provide the proper chassis protective grounding 9 Read this manual carefully and adhere to all of...

Page 16: ...on the component layout see Wire selection and preparation on page 3 2 Each channel has a HI connection LO connection and GUARD connection Guard is common to all channels with the jumpers R201 R210 in...

Page 17: ...interfering with any equipment The cable rating must not exceed the maximum allowable signal levels as defined in the specifications External factors The 3762 is specified for a resistive load however...

Page 18: ...ve load must be less than 0 5 A to protect the relays The next figure shows typical circuits to limit current surges Also consider the maximum load of 10 VA when determining the current limit For exam...

Page 19: ...in the next figure would be R V I 250 V 40 mA 6 25 k Figure 7 Model 3762 Limiting inductive reaction voltage Make a modification The guard for channels on the 3762 high voltage multiplexer card are al...

Page 20: ...the testing of multiple devices for more information about switching go to the Keithley Instruments website http www tek com keithley and search for Switching Handbook Shielded application This appli...

Page 21: ...switched to a DUT using a driven guard as shown in the next figure the guard must be switched The jumper for each channel in use is removed so that the various sources will not try to drive the guards...

Page 22: ...acy requirements Figure 11 3762 Source with external sense or Kelvin Measurement HI and Sense HI S are switched through one card The jumper is installed to provide a guard all the way to the DUT Since...

Page 23: ...re A double pole switch normally open is classified as a 2 Form A Form B is similar to Form A except that its contacts are normally closed see next figure A double pole switch normally closed is class...

Page 24: ...nstallation and connections 2 1 Installation and removal 3 3 Introduction 1 1 M Make a modification 4 3 Model 3762 typical applications 5 1 modules installation 2 2 O Operation considerations 4 1 R Re...

Page 25: ...names are the property of Keithley Instruments All other trademarks and trade names are the property of their respective companies Keithley Instruments Corporate Headquarters 28775 Aurora Road Clevel...