NF HVA4321, Instruction Manual

Page: 44 / 152

3.3 Monitor and control signal system
HVA4321
3-12
3.3.2 Control signal system
ON/OFF CONTROL
It is the remote/local setting switch. In LOCAL, the unit can be turned ON/OFF with the panel switch.
In REMOTE, the unit can be turned ON/OFF with an external signal. In REMOTE, the operation of
HIGH VOLTAGE POWER SUPPLY ON/OFF can be made with the panel.
HIGH VOLTAGE POWER SUPPLY ON/OFF Internal DC high voltage ON/OFF
SIGNAL ON/OFF High voltage amplifier input ON/OFF
OSC INPUT ON/OFF External oscillator signal ON/OFF
INT DC BIAS ON/OFF Internal DC bias signal ON/OFF
EXT DC BIAS ON/OFF External DC bias signal ON/OFF
Figure3-17. Remote/local settings
Change REMOTE/LOCAL when the signal is OFF. If REMOTE/LOCAL is changed with the signal
ON, the signal is forcibly turned OFF.
REMOTE CONTROL INPUT
It is the BNC connector to give ON/OFF control signal input when ON/OFF CONTROL is set to
REMOTE.
Figure3-18. Remote control input
I NT DC BI AS ON/ OFF SI GNAL ON/ OFF
OSCI NPUT ON/ OFF EXT DC BI ASON/ OFF
HI GH VOLTAGE
POWER SUPPLY ON/ OFF
TTL(Lo: ON) TTL(Lo: ON)
TTL(Lo: ON) TTL(Lo: ON)
TTL( Hi: OFF)
REMOTE CONTROL I NPUT
ON/ OFF
CONTROL
REMOTE
LOCAL