NF HVA4321, Instruction Manual

Page: 33 / 152

3.1 Signal system
HVA4321
3-1
DC BI AS
0 - 10 V
+
-
ON
OFF
Rotary lock knob
Figure3-1.
Internal DC bias signal source
3.1 Signal system
3.1.1 Internal DC bias signal source
DC BIAS
This sets the output level of the internal DC bias signal
source.
With combination of the pin switch, settings are
available in the range of:
・
In constant voltage mode
0 to ± 10 kV
・ In current mode
0 to ± 10 mA
・
In constant current and constant voltage mode
0 to
±
10 kV
To prevent inadvertent rotation of the dial, use the rotation lock function of the dial.
When the rotary lock knob is pressed clockwise, the dial is locked.
＋／－
Polarity of the internal DC bias signal source is set. With "+", the output is positive and with "-", the
output is negative.
ON/OFF
It is the ON/OFF switch for the internal DC bias signal source. When it is ON, the internal DC bias
signal is effective.
3.1.2 External bias signal input
EXT DC BIAS INPUT
It is the BNC connector to give external input of the DC bias signal.
・ Rated input voltage ± 10 Vpk
・ Input impedance 10k Ω± 10%
AC signal input can also be given. But the input is only for DC. Frequency
characteristic and slew rate are inferior to the OSC input.
ON/OFF
Valid or invalid external DC bias signal is set.
When it is ON, the external DC bias signal input is valid.
Figure3-2.
External DC bias input
ON
OFF
EXT DC BI AS
I NPUT
±
10V MAX
Zi n 10k Ω