Programmable AC Source 6430/6420/6415 User‘s Manual
3-10
3.7.2 Functions of Measurement
The 6430/6420/6415 has the following six functions of measurement.
Function Description
V the readings of the measured Voltage in volts. (True R.M.S. measurement)
F the readings of the measured Frequency in Hertz.
I the readings of the measured Current in Amperes. (True R.M.S. measurement)
P the measurement of True Power in Watts.
CF Crest factor, calculation formula = Ipeak/Irms.
PF Power factor, calculation formula = true power/(Vrms×Irms)
3.8 Local Operation
During remote operation, the 6430, 6420, or 6415 is controlled by a remote GPIB or RS-232C
controller, and the green indicator LED of “RMT” remains lighted. When the user wants to
return from remote operation to local operation, he has to press Local in “SHIFT” mode. If
he is not in “SHIFT” mode, he needs to press SHIFT to return to normal mode before pressing
Local .
3.9 Protection
During operation, if the 6430, 6420, or 6415 senses under voltage (UVP), over current (OCP),
shortage (SHT), over power (OPP), over temperature (OTP), fan failure (FAN), or open circuit
(OPEN), the red indicator LED of “PROTECTION” will be on, and the protection circuit enabled
to shut down the output. Before restarting the output, the user must eliminate the condition that
causes the 6430, 6420, or 6415 to react to “PROTECTION”. For detailed description and
suggestion on recovery please refer to “Troubleshooting” in 5.3.
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