ATTOTECH GR020 매뉴얼 - 페이지 9

{카테고리_이름} ATTOTECH GR020에 대한 매뉴얼을 온라인으로 검색하거나 PDF를 다운로드하세요. ATTOTECH GR020 16 페이지. Piezo driven pulsed valve

Connection of the Attotech amplifier (option)

Warning

Make sure that your wall power socket delivers the voltage that has been pre-set for the driver

unit and that is indicated on the back of the rack (see picture below, #11).

Description of the driver unit

The front panel of the drive unit is divided vertically in two parts corresponding to inputs,

adjustment knob and monitoring devices grouped in the left part, and the high voltage unit located

on the right part.

1. Main power switch

2. Peak voltage indicator

3. Control voltage select

4. Voltage adjustment knob

5. Low voltage to high voltage connect

6. Low voltage monitor connector, high Z

7. Control input connector, high Z

8. Gate input connector, high Z

9. High voltage offset (disabled)

10. Control input (disabled)

11. High voltage output

Electrical connections

A delay box with microsecond resolution triggered by the laser directly or a photo diode should be

used to feed the piezo drive unit through its gate input connector (#8). It should be a positive

TTL. Recommended values for the opening gate are 120-500μs.

The high voltage output (#11) is connected to the Lemo connector on the piezo valve. If you use

vacuum feedthroughs and extensions, make sure that the cables and connectors are specified for

500 V rms. The control input (#7) can be used to control the output voltage of the device with an

external DC voltage source, for instance a PC with a DAC card.