Adapters, Splitters, Cables

Various accessories for photon counting setups

  • Signal attenuators (20dB, 10dB, 5dB, 3dB)
  • TTL to NIM converter (e.g. for TT output of SPADs)
  • Signal inverter
  • Power splitter
  • Signal cables

ATM Series SMA Inline Attenuators

ATM Series - Signal attenuatorThe ATM series attenuators are used to attenuate signals from e.g. Single Photon Avalanche Diode (SPAD) modules. The higher signal amplitude of the TTL pulses from these detectors exceeds the input voltage range for e.g. the PicoQuant TCSPC units. Available from PicoQuant are attenuators with 3 dB, 5 dB, 10 dB and 20 dB.

SIA 400 - Inverter and Attenuator Module

SIA 400 - Inverter and attenuator moduleThe SIA 400 module is a passive module designed to invert and attenuate (20 dB) TTL pulses produced e.g. by Single Photon Avalanche Diode (SPAD) modules to negative pulses compatible with PicoQuant TCSPC units. The SIA 400 has BNC connectors at both ends.

SI100 - Inverter Module

SI 100 - Signal inverterThe SI 100 module is a passive module designed to invert signals from e.g. a detector or a synchronization signal from a laser source in order to make them compatible with PicoQuant TCSPC units.

PSM 50/51 - Power Splitter Module

PSM 50/51 - Power splitterThe PSM 50/51 power splitter (reflection free T-pad) allows a 50 Ohms RF source to feed two 50 Ohms loads simultaneously. This task cannot be performed by an ordinary T-pad without severe reflections and consequent signal distortion. This is particularly important in timing sensitive applications such as Time-Correlated Single Photon Counting (TCSPC). Max. power dissipation 0.2 W. The power splitter are available with either BNC (PSM 50) or SMA (PSM 51) connectors.


Signal cablesPicoQuant can offer a range of special made signal cables with SMA or BNC connectors as well as specialized cables with Lemo connectors. For signal connections we recommend RG 223 cable. This cable type has a double braided silver plated screen which provides optimum shielding in timing sensitive applications such as Time-Correlated Single Photon Counting (TCSPC)

Connector type SMA (m/f)
Attenuation factor 20 dB, 10 dB, 5 dB and 3dB
SIA 400
Connector type BNC (m/f)
Attenuation factor 20 dB, inverting
Operation principle Signal differentiation
SI 100
Connector type SMA (m/f)
Operating principle Signal inversion
PSM 50 / 51
Connector type BNC (PSM 50)
SMA (PSM 51)
Splitting factor 50 / 50 (fixed)

All Information given here is reliable to our best knowledge. However, no responsibility is assumed for possible inaccuracies or omissions. Specifications and external appearances are subject to change without notice.

There are no dedicated documents for download for these products.

How can we help you?