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Products / 光学分析 /光电探测器 /光电倍增管 (PMTs) /计数单元 /

计数单元

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Counting Unit – STM4011

SIMTRUM offers the STM4011 counting unit includes counting control circuit and upper computer acquisition software. The counting unit can be used directly in combination with a photon counting detector or scintillation detector as a counter. The counting software has a simple and easy user interface.

Feature

Count the positive logic TTL level pulses and input them to the computer through RS-232 interface
Gating time is adjustable
Built-in linear correction program (for use with photon counting detectors)
Serial port baud rate: 19200 (1 bit start bit, 8 bit data bit,1 bit stop bit, no check bit)

Product Specifications and Brochures

Parameter		Description
Input	Input Channel	Channel 1
	Input Signal Level	3.3VTTL（Compatible with 5VTTL levels）
	Signal Pulse Width	≥10ns
	Input Impedance	50Ω
Count	Count Mode	Gating
	Maximum Counting Rate	5×10⁷S^-1
	Maximum Counting Value	232
Gating	Gated Time Range	10~655350ms
Pulse Resolution Time⁽¹⁾	/	0~255ns
Input Voltage	/	+11.5~+12.5V
Interface	/	RS232
System	/	WindowsXP/7/10
Work Environment	Temperature	0~+40℃
Work Environment	Humidity	≤90%RH
Storage Environment	Temperature	-20~+50℃
Storage Environment	Humidity	≤93%RH

Note：(1) The pulse pair resolution time needs to be tested against the matched detector performance.

Dimension

Wiring Instructions
Interface Type	2-pin Interface	BNC Interface	DB9 Female
Interface Definition	+12V Input	Signal Input	Signal Output
Wiring	2-pin Connector Power Cable	/	/

光电倍增管 (PMT)

型号	光谱响应范围	峰值波长	典型量子效率	有效面积(mm)	典型阴极发光灵敏度	典型阳极灵敏度
头戴式光电倍增管（仅限管）	290 - 650nm	380 - 500nm	12% -,28%	Φ10 - Φ58	40 - 100μA/lm	30 - 2000A/lm
侧开式光电倍增管（仅限管）	160 - 900nm	/	/	8×24	40 - 250μA/lm	400 - 2500A/lm
光电倍增管（模块）	160 - 900nm	400nm, 420nm	/	Φ22 - Φ25 \| 8×24	60 - 250μA/lm	/
微通道板光电倍增管 (MCP-PMT)	115 - 650nm	250nm, 380nm	30%@410nm, 15%@250nm	/	70μA/lm	900A/lm
闪烁体探针	/	/	/	Φ25×25 - Φ75×75	/	/
β 探测器	/	/	/	Φ10, Φ25	/	/

装配和计数单元


高压管插座	侧窗高压管插座	电压电源	计数单元

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Compare	Model		Drawings & Specs	Availability	Reference Price (USD)
		STM4011 Counting Unit, Input Channel Channel 1, Input Signal Level 3.3VTTL（Compatible with 5VTTL levels), Signal Pulse Width ≥10ns, Input Impedance 50Ω, Count Mode Gating, Maximum Counting Rate 5×10^7S^-1, Maximum Counting Value 232, Gated Time Range 10~655350ms, Pulse Resolution Time 0~255ns		6-8 weeks	Request for quote

STM4011 - Parameter

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