8508A
Users Manual
Exiting a Menu .............................................................................................. 2-5
Major Function Keys..................................................................................... 2-5
Direct Action Keys ........................................................................................ 2-6
Mode Keys..................................................................................................... 2-6
Rear Panel .......................................................................................................... 2-7
Labels ............................................................................................................ 2-7
Fuses .............................................................................................................. 2-7
Voltage Selector ............................................................................................ 2-7
Power Input and Power Switch ..................................................................... 2-7
Calibration Switch ......................................................................................... 2-7
Rear Panel Connectors and Pin Designations.................................................... 2-8
Rear Inputs..................................................................................................... 2-8
External Trigger Input ................................................................................... 2-8
IEEE 488 Input/Output.................................................................................. 2-8
Power-On Configuration .................................................................................... 2-8
The 8508A-LEAD Measurement Lead Kit ........................................................ 2-9
3 Making Measurements ........................................................................ 3-1
Introduction ........................................................................................................ 3-3
Making Connections to the Multimeter -- General Guidelines .......................... 3-4
Using the Measurement Functions..................................................................... 3-5
DC Voltage.................................................................................................... 3-5
Measuring DC Voltage.................................................................................. 3-7
Making Input Connections........................................................................ 3-7
AC Voltage.................................................................................................... 3-8
Measuring AC Voltage.................................................................................. 3-11
Induced Interference .................................................................................. 3-11
Common Mode Rejection ......................................................................... 3-11
Lead Considerations.................................................................................. 3-11
Resistance ...................................................................................................... 3-11
High Voltage Ohms....................................................................................... 3-13
True Ohms..................................................................................................... 3-15
Measuring Resistance.................................................................................... 3-17
2-Wire Measurements ............................................................................... 3-17
4-wire Measurements ................................................................................ 3-17
4-wire High Resistance Measurements ..................................................... 3-18
4-wire Resistance Zero.............................................................................. 3-18
Ω Guard..................................................................................................... 3-19
DC Current .................................................................................................... 3-21
Measuring DC Current .................................................................................. 3-22
AC Current .................................................................................................... 3-23
Measuring AC Current .................................................................................. 3-24
Temperature ................................................................................................... 3-25
Measuring Temperature ................................................................................. 3-28
Multimeter Inputs
.............................................................................................. 3-29
Input ............................................................................................................... 3-29
Using the INPUT Key ................................................................................... 3-29
SCAN OPERATIONS................................................................................... 3-30
Tru Ohms Ratio......................................................................................... 3-31
Monitoring Modes ............................................................................................. 3-32
Monitor Key .................................................................................................. 3-32
Displaying Signal Frequency......................................................................... 3-32
Displaying Standard Deviation ...................................................................... 3-32
Devn Menu................................................................................................ 3-32
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