1. Description (描述)

· The TH7195 is a microprocessor controled High Voltage Power Supply (HVPS),designed to drive 7",9" and 12" X-Ray Image Intensifiers(XRII).

TH7195 是一个设计用来驱动 7",9" 和 12" X线影像增强器(XRII)的微处理器控制高压电源。

· It operates form a 24V 10% DC input source, with 500mA max current.

它的输入电压为直流 24V 10%,最大输入电流 500mA。

· Several ways are provided to control the power supply and to adjust and switch between the XRII input fields (see chapter 3):

提供了控制电源和调整转换X线影像增强器输入视野的方法(看第3章)：

-Three Control Input 1, 2 and 3 can be used either to switch between several pre-set XRII fields or to control linearly the G1, G2 and G3 electrode voltages of the XRII.

三个控制输入端1,2和3能在一些预先设定的X线影像增强器视野之间转换并且线性地控制X线影像增强器 G1，G2和G3极的电压。

-Three encoders can be used to adjust manually the G1, G2 and G3 voltages, for each XRII fields.

三个电位器可以用来为X线影像增强器每个视野手工调整 G1，G2和G3电压。

-A set of 5 switches can be used to select the different operating modes of the power supply.

一组5个配置开关可以用来选择不同的工作电源模式。

-A serial port interface can be used to take control of the power supply, to set G1, G2 and G3 voltages, to select the XRII field, or to measure back the real electrode voltages(see chapter4).

一个串行端口接点可被用来控制电源, 设定G1，G2和G3电压, 选择X线影像增强器视野, 或延迟测量实际极间电压(看第4章)。

· Seven test points are available, which provide a low voltage proportional to the five electrode voltages, as well as to the photocathode and the getter currents (see chapter 5).

七个测试点可以提供一个与五个电极电压和光电阴极电流及离子泵电流成比例的低压(看第5章)。

· Th7195 is designed for use with pulsed X-rays (maximum photocathode instantaneous current:50μA with no significant loss of resolution on the XRII).

Th7195 被设计用来利用脉冲X射线(在没有降低X线影像增强器有效分辨率的情况下光电阴极的最大瞬时电流为50μA)。

· The detailed technical characteristics and maximum ratings of the TH7195 are given in the technical specification TTV / 1M.1169 / 95 EM.

在技术说明书 TTV / 1 M .1169 / 95 EM 里给出了 TH7195 详细的技术特性和最大额定值。

2. Electrical connections (电器接口)

Connection 接口功能	Connector type 接插件型号		Voltage, current Symbols 电压/电流符号
Power supply input电源输入(UE)	Pin 15	J Male Sub-D 15 pins	Ue, Ie
Power 0 volt 电源0V(0VP)	Pin 8		0VP
Control input 1 控制输入1(UC1)	Pin 14		Uc1
Control input 2 控制输入2(UC2)	Pin 6		Uc2
Control input 3 控制输入3(UC3)	Pin 13		Uc3
0 volt (0V)	Pin 4,5,7		0V
Serial port串行端口:
Reception input接收输入(RXD)	Pin 2
Transmission output 传输输出(TXD)	Pin 3
Ready to receive output 准备接收输出 (DTR)	Pin 9
Enable to send input能够输入 (CTS)	Pin 10
0 volt (0V)	Pin 1		0V
Do not use, leave open不用，开路	Pin 11
Do not use, leave open不用，开路	Pin 12
ANODE阳极 (A)	For AMP LGH-1 L 832 692/2 type cable		U5
G4 electrode离子泵阳极 (G4)	For AMP LGH-1/2 L 840 706/2 type cable		U4
G3 electrode 电极 (G3)	For AMP LGH-1/2 L 840 706/2 type cable		U3
G2 electrode电极 (G2)	For AMP LGH-1/2 L 840 706/2 type cable		U2
G1 electrode 电极 (G1)	For AMP LGH-1/2 L 840 706/2 type cable		U1
Photocathode光电阴极 (PC)	One 6.3mm FASTON lug		Ipc光电阴极电流
Cathode of active getter离子泵阴极(E)	One 6.3mm FASTON lug		Igetter离子泵电流
HT 0 volt and case ground HT 0V和外壳接地(GND)	One M4 screw		0VHT

0 VP, 0 V and GND are connected together internally.

0 VP, 0 V和GND被一起连接在内部。

TYPICAL CONFIGURATION

典型的接法

Mode control and the micro-computer are optional , and depend on the equipment .

模式控制和微型计算机通过设备是可选择的。

All inputs and outputs are protected against short cuts and light over voltages.

所有的输入和输出被保护防止脉冲电压和低电压。