Chroma 6404 - Measurement; Select Measurement Items; Measurement Functions; Local

Programmable AC Source 6404/6408 User’s Manual
3-8
3.7 Measurement
The 6404/6408 can measure actual performance V, F, I, P, PF, and CF of the Load
connected to it without using extra measurement instrument when the 6404/6408 AC
source outputs power to the load. During operation, V and F measurement data are always
shown on the LEDs at the left and the middle zone. The right zone displays one of the I, P,
PF, and CF measurement according to the user’s choice.
The sample LED shows the measurement V = 132.2V, F = 75Hz as below:
132.2 75.0 0.03
The next section describes how to select one of the measurement I, P, PF, CF for automatic
read-back.
3.7.1 Select Measurement Items
1. If output is not activated, press the OUT/QUIT to turn on the “OUT” LED.
2. When operating in “SHIFT” mode, quit from “SHIFT” mode by pressing the SHIFT
to
switch off the green “SHIFT” LED.
3. Press I/P/PF/CF
to light up one of the four LEDs among I, P, PF, and CF.
It keeps changing one by one among these four options if the user presses this key again
and again. Hence, the right displayed value reacts to the corresponding measurement
parameters after each key pressed in the following sequence.
I  P  PF  CF  (go back I)
3.7.2 Measurement Functions
The 6404/6408 offers the following 6 measurement functions.
Function
Description
V
Voltage measurement readings in volts. (True R.M.S. measurement)
F
Frequency measurement readings in Hertz.
I
Current measurement readings in Amperes. (True R.M.S.
measurement)
P
True power measurement in Watts.
CF
Crest factor, calculation formula = Ipeak/Irms.
PF
Power factor, calculation formula = true power/(Vrms×Irms)
3.8 Local