NF BP4620, Instruction Manual

Page: 183 / 214

7.8 Performance Test
BP4620
7-12
indicated in the following table, the operation is judged to be normal.
Operation Mode Setting External Oscillator Frequency Rated Range
CC-EXT 50 Hz 14.14 Arms or higher
500 Hz 14.14 Arms or higher

Harmonic distortion test using CV mode external signal input
Load: 3

resistance load
Measurement connection: Connect the output of the external oscillator to the external signal
input of the BP4620. Then connect an AC voltmeter and distortion meter to the output terminal of
the BP4620, and measure the voltage and harmonic distortion.
Settings: After performing setting initialization, set the operation mode and external oscillator
frequency according to the following table. Set the output voltage of the external oscillator to 1.2
Vp-p. Check that the output voltage of the BP4620 is 120 Vp-p.
Judgment: If the harmonic distortion of the output voltage of the BP4620 falls within the rated
ranges indicated in the following table, the operation is judged to be normal.
Operation Mode Setting External Oscillator Frequency Rated Range
CV-EXT 10 Hz 1% or lower
10 kHz 1% or lower

Harmonic distortion test using CC mode external signal input
Load: 3

resistance load
Measurement connection: Connect the output of the external oscillator to the external signal input
of the BP4620. Then connect an AC voltmeter and a distortion meter to the output terminal of the
BP4620, and measure the voltage and harmonic distortion.
Settings: After performing setting initialization, set the operation mode and external oscillator
frequency according to the following table. Set the output voltage of the external oscillator to 2
Vp-p. Check whether the output voltage of the BP4620 is 120 Vp-p (40 Ap-p). If overload seems
likely to occur, slightly lower the output voltage of the external oscillator.
Judgment: If the harmonic distortion of the output voltage of the BP4620 falls within the rated
ranges in the following table, the operation is judged to be normal.
Operation Mode Setting External Oscillator Frequency Rated Range
CC-EXT 10 Hz 1% or less
10 kHz 1% or less

Output DC offset test during external input short
Load: 3

resistance load
Measurement connection: Short the external input terminal (installation of a 50

or 75

termination resistor is also possible). Measure the voltage of the output terminal of the BP4620
with a DC voltmeter. In the case of the CC mode, convert the measured voltage value into a
current value by dividing it by the load resistance.
Settings: After performing setting initialization, set the operation mode according to the
following table.
Judgment: If the output voltage or output current of the BP4620 falls within the rated ranges in
the following table, the operation is judged to be normal.
Operation Mode Setting Rated Range
CV-EXT

0.1 to +0.1 V
CC-EXT

0.1 to +0.1 A
(

0.3 to +0.3 V @3

load)

Residual noise test during external input short
Load: 3

resistance load
Measurement connection: Short the external input terminal (installation of a 50

or 75

termination resistor is also possible). Measure the voltage of the output terminal of the BP4620
with an AC voltmeter. In the case of the CC mode, convert the measured voltage value into a
current value by dividing it by the load resistance.