HP WaterSkis E1312A, WaterSkis E1412A autozero, 83, 152, 197 math function

34, 180

185– 191

35

185– 188

180– 181

57– 59

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, 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, messages,

noise, 28

offset voltage, 28 overload, 34

period measurement, 36 queue, 155

range error, 180 reading error, 180 self-test errors, 189 temperature coefficient, 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, using math operations, 59

Visual Basic programming language, 52 visual engineering environment (VEE), 64 VXIplug&play

See online help

Execution Errors,

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

Index 203