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Counting Unit | SIMTRUM Photonics Store

Products / Light Analysis /Photodetectors /Photomultiplier Tubes (PMTs) /Counting Unit /
Counting Unit
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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

Product Brochure Link:

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℃
Humidity ≤90%RH
 Storage Environment Temperature -20~+50℃
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 / /

 

 


Photomultipliers Tube (PMT)

Model Spectral Response Range Peak Wavelength QE Typ. Effective Area(mm) Cathode Luminous Sensitivity Typ. Anode Sensitivity Typ.
 Photomultipliers Tube Head-On (Tube Only) 290 - 650nm 380 - 500nm 12% -,28% Φ10 - Φ58 40 - 100μA/lm 30 - 2000A/lm
 Photomultipliers Tube Side On(Tube Only) 160 - 900nm / / 8×24 40 - 250μA/lm 400 - 2500A/lm
 Photomultipliers Tube (Module) 160 - 900nm 400nm, 420nm / Φ22 - Φ25 | 8×24 60 - 250μA/lm /
 Microchannel Plate - Photomultiplier (MCP-PMT) 115 - 650nm 250nm, 380nm 30%@410nm, 15%@250nm / 70μA/lm 900A/lm
 Scintillator Probe / / / Φ25×25 - Φ75×75 / /
 β Detector / / / Φ10, Φ25 / /

 

 

 

Assemblies and Counting Unit

 

High Voltage Tube Socket High Voltage Tube Socket for Side Window Voltage Power Supply Counting Unit

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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

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