Time Tagging Module

8 Channel Time to Digital Converter

The Time Tagging Module TTM8000 is an 8 channel time-to-digital converter. It can be used to measure the exact timing of events on up to 8 digital signals for a wide range of logic families by assigning a 64 bit timestamp to each incoming signal. The time resolution depends on the selected measurement mode (free running at 82.3ps, down to 1ps). These digital values are sent to a PC over an Ethernet connection for both, on-line evaluation and off-line storage to replay all events offline. Analysis of histograms, two- and multichannel correlations as well as interfaces to program user-defined operations are possible.

This product was developed in cooperation with IQOQI


- 4 measurement modes

- Up to 25 million events per second

- Oven-controlled crystal oscillator for high stability

- User programmable analog and digital I/O

- Variable threshold voltage (for each trigger)

- Gigabit Ethernet

- Ready-to-Use software for Linux and Windows

Documents and Downloads:

Data sheet
Applications, Links
Software v4.4.5
Part No. Digital Timing Resolution Data Transfer Rate Event Rate Average Timetag length Measurement Range Start/Stop Mode Counting Mode Connector Interface
TTM8000 8 82.3 ps 1000 Mbit 25M 60 bit unlimited 4 Modes Yes SMB (13) Gigabit Lan (1)

Single Photon Detection Module

Single Photon Counting Module with less than 20 dark counts/s

QD800c-fQ series of Single Photon Counting Modules offers a unique combination of low dark count rates, very low jitter and a fast quenching circuit in a miniature package. The special mechanical design allows a flexible combination with existing systems in the laboratory. Incoming photons generate corresponding electrical pulses which may be conveniently read out at the digital output.

This product was developed by AIT in cooperation with IQOQI


- Low dark rates

- Very low jitter

- Fast quenching circuit

- High detection efficiency (400 nm to 1000 nm)

- digital output pulse (2V) at SMA connector

- Single 5 V DC supply operation

- Compatible with third party adapters

Documents and Downloads:

Data sheet
Data sheet APD C30902SH
Applications, Links
Part No. Timing Resolution Dead Time Range Dark Count Rate Spectral Range Responsivity @830 nm Quantum Efficiency @830 nm Connector
QD800c-fQ-500 300 ps 300 ns <500 counts/s 400-1000 nm 128 A/W 60 % several
QD800c-fQ-50 300 ps 300 ns <50 counts/s 400-1000 nm 128 A/W 60 % several
QD800c-fQ-20 300 ps 300 ns <20 counts/s 400-1000 nm 128 A/W 60 % several
MOQ: 1 piece

Roithner Lasertechnik GmbH, Wiedner Hauptstraße 76, A-1040 Vienna, Austria, Tel.: +43 1 586 52 43 - 0, Fax +43 1 586 52 43 - 44