NF HVA4321, Instruction Manual

Page: 93 / 152

4.3 Operation example in constant current mode (load)
HVA4321
4-37
When either of the above is not applicable, the internal high voltage DC power supply may be faulty.
In this case, it must be repaired.
4.3.4 Signal output and adjustment
a)
Using internal DC bias signal source
Make sure that the internal DC signal source dial is 0. Set the polarity switch to the desired polarity. Turn
ON the internal DC bias signal source ON/OFF switch and press ON of the SIGNAL switch. While
reading the value on the voltmeter or oscilloscope connected to the voltage monitor, turn the dial
gradually to the right. Set it to the desired voltage.
Figure4-47. Using internal DC bias signal
b) Using external oscillator
Connect the external oscillator to OSC INPUT and make sure that the oscillator output level is 0V. Set the
GAIN knob to UP. Turn ON the external oscillator ON/OFF switch and press ON of the SIGNAL switch.
While reading the value on the voltmeter or oscilloscope connected to the voltage monitor, increase the
output level of the oscillator gradually.
If fine adjustment of the output level is required, adjust it at the oscillator or adjust it with GAIN of the
unit. Turn GAIN to the left, the gain is decreased. Turn GAIN to the right, the gain is increased. The gain
can be adjusted in the range of approximately ±3%.
DC BI AS
0 - 10 kV
+
-
ON
OFF
SI GNAL
OFF
0にする。
極性を選ぶ。 ON にする。
ONにする。
希望のレベルに
調整する。
ON
DC BI AS
0 - 10 kV
Set to 0
Select polarity
Turn ON
Press ON
Adjust it to the
desired level.