Tektronix DMM4040 User Manual page 7

Managing Memory ........................................................................................ 3-23
Controlling System-Related Operations ............................................................ 3-24
Identifying Meter Errors................................................................................ 3-24
Querying the Firmware for Revision Level................................................... 3-24
Adjusting Display Brightness........................................................................ 3-25
Setting the Meter's Date and Time................................................................ 3-25
USB Operation .............................................................................................. 3-25
USB Storage Capacity and Write Time......................................................... 3-25
USB Memory Device Compatibility and Special Instruction ....................... 3-26
Configuring the Remote Interface ..................................................................... 3-26
Sample Program Using the RS-232 Computer Interface ................................... 3-26
Checking the Meter's Calibration Date ............................................................. 3-28
Resetting the Meter's Default Settings .............................................................. 3-28
4 Making Measurements ........................................................................ 4-1
Introduction........................................................................................................ 4-3
Selecting Function Modifiers............................................................................. 4-3
Activating the Secondary Display ..................................................................... 4-3
Measuring Voltage............................................................................................. 4-4
Measuring DC Voltage.................................................................................. 4-4
Measuring AC Voltage.................................................................................. 4-6
Measuring Frequency and Period ...................................................................... 4-7
Measuring Resistance ........................................................................................ 4-8
Making a Two-wire Resistance Measurement .............................................. 4-8
Making a Four-wire Resistance Measurement .............................................. 4-9
Measuring Current ............................................................................................. 4-10
Measuring DC Current .................................................................................. 4-12
Measuring AC Current .................................................................................. 4-13
Measuring Capacitance (4050 only) .................................................................. 4-14
Measuring RTD Temperature (4050 only) ........................................................ 4-15
Testing Continuity ............................................................................................. 4-16
Checking Diodes................................................................................................ 4-17
Making a Triggered Measurement..................................................................... 4-18
Setting the Trigger Mode............................................................................... 4-18
Setting a Trigger Delay ................................................................................. 4-19
Setting Number of Samples per Trigger........................................................ 4-19
Connecting an External Trigger .................................................................... 4-19
Monitoring the Measurement-Complete Signal................................................. 4-20
Appendices
A 2X4 Test Leads............................................................................................ A-1
B Errors........................................................................................................... B-1
C RS-232 Port Connections ............................................................................ C-1
D Analog Filter Applications .......................................................................... D-1
Index
iii
(continued)
Contents