这是一系列用于高辐射场下直接连接各种中子计数管的检测模块。模块包括高性能宽带电荷灵敏前放和主放甄别电路，输出TTL 信号，可调节阈值和TTL 信号宽度，可加和超过100 个检测模块的计数。部分型号内置高压模块，可选配SHV/MHV/HV/Cable 等不同连接方式。目标就是制造一款易于使用、易于集成的高性能检测模块，并可选配不同的特性。
1、Each instrument has an analog monitoring test point allowing direct monitoring of amplified charged events using an oscilloscope. A twelve turn trim pot is available to finely tune the amplifier sensitivity to the desired level so you can obtain a good HV plateau for your application.
2、In addition, when a charged event is detected, a TTL OUT pulse is produced.
3、The TTL OUT pulse width is adjustable from 40nSeconds to 500nSeconds.
4、Each instrument contains a TTL IN input allowing you to sum outputs from other modules in a system. This allows quick and easy interconnection from 1 to over 100 detectors for digital pulse counting measurements.
5、Each instrument contains a threshold control trim pot allowing you to control the discriminator level for your application.
6、The 20 is equivalent in performance to the 10A but additionally contains a high performance high voltage generator that can be adjusted over a range of 0-2200 volts.
7、The 20 contains a HV MON test point that allows you to measure and adjust the high voltage setting.
8、The 10 is compact, housed in 1 inch diameter aluminum with a length of 1.5 inches./9、The 20 is enclosed in 1 inch diameter aluminum with a length of 3 inches.
Additional features include a light emitting-diode (LED) and two trimpots. The LED provides visual indication when a neutron event has occurred. Two trimpots allow control of the amplifier sensitivity ("THRES ADJ ")and "TTL OUT " pulse width. The trimpots are located just beneath the hole locations labeled as "THRES ADJ " and "PW ADJ ".Refer to Figure 2 on the reverse side.
Digital Cascade Summing
All 10A and 20A modules provide an input labeled "TTL IN " intended for cascade or summed pulse applications. For cascade operation, the "TTL OUT " of a 10A is connected to the "TTL IN " of another 10A.Suppose you have an application requiring three detectors. Three modules are interfaced directly to the HN connectors of three detectors. The bias supply and power supply cables are attached to the 110A "HV IN " and "Vcc " connectors, respectively.
10A and 20A Configurations
You can purchase 10A and 20A modules with a variety of connector interfaces for He-3 detectors. Modules have the capability to connect directly to Helium-3 gas filled detectors that us HN, MHV, or SHV type of connectors. If necessary, you can even cable directly from the 10A modules to the detector using a high voltage cable with the 10A-C.The 10A-C uses a miniature high voltage connector rated for 5000 volts allowing cable connection to the detector.