Autocal (Output Voltage Compensation) - NF DP Series Instruction Manual

10. Specifications

10.17 Autocal (Output Voltage Compensation)

When the Autocal (Automatic Calibration) is on, the detection point voltage is always measured,
and the output voltage is continuously corrected so that its effective value is equal to the output
voltage setting value. The ratio (correction factor) of the detection point voltage to the output
voltage setting value is used until the Autocal or the power is turned off. Therefore, the detection
point voltage is not necessarily maintained if the load changes while the Autocal is on. The
detection point can be switched between the sensing input terminal (remote sensing on) and the
output terminal (remote sensing off).
Unlike the AGC, it cannot follow a load fluctuation because it does not keep track of the voltage.
On the other hand, when the load is stable, it has a merit of short response time on changing the
output voltage setting.
Effective only for AC-INT, AC-VCA, AC-SYNC, DC-INT, and DC-VCA and when the waveform
is sine wave or DC. It is turned off when the Sequence or Simulation is selected. It cannot be
selected when the AGC is set to on.
However, in case the stand-by state of sequence mode (step 0) effective only for AC-INT,
ACDC-INT and DC-INT and when the waveform is sine wave or DC. Autocal cannot be activated
unless either AC voltage or DC voltage setting is 0 V for ACDC-INT. Also, Autocal is turned off
once when you change ACDC mode from AC mode of DC mode even in stand-by state. Turn ON
it again when you need.
Restriction when on
Calibration range
*61
Accuracy *61 Within 0.5 V / 1.0 V
*61: The values of the calibration range and accuracy are the ones at the time when the Autocal is
turned on.
288
The output voltage setting is 8 V or higher
Within 10 % (difference between the output voltage and measured value)
The output voltage should be within the allowed voltage setting range of the
product.
(in the case of DC or 40 Hz to 550 Hz, 50 V or higher output voltage,
resistance load, the output current is the maximum current or less)
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