NF HVA4321, Инструкция по эксплуатации

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3.2 Amplifier
HVA4321
3-7
In constant current mode
In constant current mode, the voltage of the internal high voltage DC power supply is limited to limit
the output voltage. Use the unit paying attention to the following:
・
Since the limit is made by current voltage, there is approx. 0 to 1 kV error for the set value.
DC CURRENT (mA)
The output current limit value is set. The limit value is common for both positive and negative and the
average current can be set in the rage from 0 mA to 10 mA.
For example, the value is set to 3 mA, the limit is +3 mA or -3 mA for DC. For AC, the average current
for positive side is 3 mA and the average current for negative side is -3 mA.
Figure3-9. Operation of current limiter
Use this current limiter paying attention to the following:
・ The limit current set here is only a guideline. The setting accuracy is not high.
・ It is limited not by peak current, but by average current.
・ The voltage waveform of a load capacity may be non-linear due to limitation by average current,
resulting in increase of peak current.
LIMIT/TRIP
In LIMIT, the output current is limited with the setting value.
In TRIP, if the output current exceeds the set value, SIGNAL is switched OFF and the output is 0V.
平均 電 流 ±3mA で 制限 さ れる 。
本 来の 出力 電 流レ ベル
直流のと き
平均 電流
±3mA
で 制限 され る 。
交 流のとき
Limited by average current of
±
3 mA
Limited by average current of ± 3 mA
For AC
Original output current level
For DC