Precision Digital PD6400 - Manual (Page 72)

Model PD6400 High Voltage & Current Meter Instruction Manual
72
Math Function (math)
Within the Math menu is the power function, P = I*V, available on this
meter to calculate the apparent power. This math function is a
combination of input channels A and V, and will display when channel P
is selected in the Display menu. The actual function, as calculated by
the meter, is P = ( [A*V] + C )*F, where C is the adder constant and F is
the Factor constant.
Math Constants (Const)
The Math Constants menu is used to set the constants used in channel
P math. The math function includes input channel A and V, as well as
the adder constant C, and factor constant F.
The Adder constant (C) may be set from -99.999 to 999.999.
The Factor constant (F) may be set from 0.001 to 999.999.
Low-Flow Cutoff (CutofF)
The low-flow cutoff feature allows the meter to be programmed so that
any noise picked up from nearby transformers or other electric devices
that cause an otherwise zero reading to fluctuate always displays zero
on the meter.
The cutoff value may be programmed from 0 to 999999. The meter will
display zero below the cutoff value. Programming the cutoff value to
zero disables the cutoff feature.
Analog Output Programming (AoutPr)
The Analog Output Programming menu is used to program the behavior
of the 4-20 mA output. The following parameters and functions are
programmed in this menu:
1. Source: Source for generating the 4-20 mA output
2. Overrange: Analog output value with display in overrange condition
3.
Underrange: Analog output value with display in underrange condition
4. Break: Analog output value when loop break is detected
5. Max: Maximum analog output value allowed regardless of input
6. Min: Minimum analog output value allowed regardless of input
7. Calibrate: Calibrate the internal 4-20 mA source reference used to
scale the 4-20 mA output