Campbell CR5000, Operator'S Manual

Page: 134 / 238

Section 7. Measurement Instructions
7-8
Parameter
& Data Type
Enter
SettlingTime
Constant
The time in microseconds to delay between setting up a measurement (switching to the
channel, setting the excitation) and making the measurement. (1 microsecond resolution)
Entry Voltage Range Integration Settling Time
0 ± 20 mV Flash 200 µS (default)
0 All but ± 20 mV, Flash 100 µS (default)
0 All 250 µS 200 µS (default)
0 All _50Hz, _60 Hz 3 mS (default)
>=100 All All µS entered
Integ
The time spent on integration in microseconds for each of the channels measured.
Constant Entry
Integration
0, 200 Flash Conversion; 200 = 2 flash conversions 100 µS apart
and averaged
250; 500-16000
250 µS; multiples of 500: 250 µS integrations starting each
500 µS and averaged
_60Hz or 16667
16,667 µS (reject 60 Hz noise)
_50 Hz or 20000
20,000 µS (reject 50 Hz noise)
Mult, Offset
Constant,
Variable,
Array, or
Expression
A multiplier and offset by which to scale the raw results of the measurement.
7.4 Full Bridges
BrFull (Dest, Reps, Range, DiffChan, ExChan, MeasPEx, ExmV, RevEx,
RevDiff, SettlingTime, Integ, Mult, Offset)
X = result w/mult = 1, offset = 0
X
V
V
R
R R
R
R R
x
= =
+
−
+
⎛
⎝
⎜
⎞
⎠
⎟
1000 1000
1 3
3 4
2
1 2
This Instruction applies an excitation voltage to a full bridge and makes a
differential voltage measurement of the bridge output. The resulting value
(multiplier = 1, offset = 0) is the measured voltage in millivolts divided by the
excitation voltage in volts (i.e., millivolts per volt).