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Index 203
E
Enabling
automatic input impedance
, 100
autorange
2-wire ohms function
, 92, 107
4-wire ohms function, 105, 134
ac current function, 87, 102, 120
ac voltage measurements, 145
ac-coupled RMS voltage, 93, 108
dc current function, 88, 103, 125
dc ratio measurements, 95, 110
dc voltage function, 94, 109
dc voltage measurements, 150
frequency measurements, 130
period measurements, 138
resistance measurements, 142
autozero, 83, 152, 197
math function, 78
Errors
ac current measurement
, 36
ac turnover, 35
burden voltage, 36
calculate total measurement, 180–181
calibration errors, 190–191
common mode, 35
crest factor, 33, 180
dc measurement, 32
execution errors, 185–188
field wiring resistance, 30
frequency measurement, 36
high resistance measurements, 31
leakage current, 26
loading (ac volts), 34
loading (dc volts), 26
low-level measurement, 35
messages, 185–191
noise, 28
offset voltage, 28
overload, 34
period measurement, 36
queue, 155
range error, 180
reading error, 180
self-test errors, 189
temperature coefficient, 34, 180
thermal EMF, 25
*ESE, 163
*ESE?, 163
*ESR?, 164
Example Programs
C programming language
, 52
hardware used, 53
HP VEE programming example, 64
making a single measurement, 54
making external trigger measurements, 54
maximizing accuracy, 56
maximizing measurement speed, 55
monitoring for limit test failure, 63
monitoring for message available (MAV bit), 62
monitoring for operation complete (OPC bit), 61
multimeter self-test, 22–23
setting sample count, 51
setting trigger count, 49
setting trigger delay, 49
status system example, 60–63
synchronizing with switch module, 57–59
using math operations, 59
Visual Basic programming language, 52
visual engineering environment (VEE), 64
VXIplug&play
See online help
Execution Errors
, 185–188
External Trigger
measurements
, 54
source, 46–47, 160
trig input requirement, 47
VM Complete output signal, 47
F
FETCh? Command, 98, 198
Field Wiring Resistance, 30
Filters, ac signal, 36–37, 127–128
Frequency
aperture time
, 128
characteristics, 177–178
function, 89, 104
gate time, 128
measurement connections, 19
measurement errors, 36
voltage range, 129–130
Front Panel Indicators, 18
Function Changes
increasing measurement speed
, 193–198
Function Commands, special, 193–198
Function Reference (VXIplug&play)
See online help
Functional Connections
2-wire ohms measurement
, 21, 30
4-wire ohms measurement, 21, 29
analog bus, 19