Download Time Frame Generator (TFG2)

1. INTRODUCTION
The second generation Time Frame Generator (TFG2) is a VME based electronic timing
module that has been designed by the Science and Technology Facilities Council (STFC) to
support high speed time-resolved science on the light sources, and has been successfully
deployed on the SRS and Diamond synchrotrons in the UK.
In particular, the TFG2 provides all the high speed digital timing input/output for both the
control of external equipment and the synchronisation of triggers in NCD and scanning
XAFS science environments.
Time Frame resolution to 10ns is possible, with full programmability of live and dead
frames (10ns to 24hrs), repetitive frame patterns (1 to 232) either free running or
synchronous to the synchrotron beam bunch structure or other external clock.
The TFG2 utilises a wide variety of programmable drive strength digital I/O standards
(TTL, LvTTL (terminated or unterminated), LVDS, CMOS) for timing input and output,
trigger inputs (including variable threshold +/-5V 50Ω terminated, and +/-24V high
impedance inputs), user outputs and scaler inputs, all via a variety of coaxial and 2-pole
LEMO connectors.
Figure 1: The TFG2 Primary (left) and Secondary (right) Boards together with a 6U 3-slot
wide Front Panel (not shown) make up a complete TFG2 module