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SC-TDC-1000 S Series Manual | Surface Concept GmbH
For release versions 012, 013 & 022
• Use the BNC sockets named “Stop“ to apply 1 - 8 (R012, R013) and 1 - 16 (R022) LVTTL signals to the TDC
stop input channels.
• To perform time measurements with respect to an external clock, provide start pulses to the start input
of the TDC. Use the BNC socket named “Start” to apply LVTTL signals (see
for detailed
information).
• Use the USB cable to connect the TDC to the PC. Do not use PC front panel USB connectors; they are
often restricted in performance (see
for further details).
• Connect the power cable to the main connector.
• Install the TDC device driver or software package prior to switching on the TDC.
For release version 042
• Use the LEMO 00 sockets named “Stop“ to apply 1 - 16 NIM signals to the TDC stop input channels.
• To perform time measurements with respect to an external clock, provide start pulses to the start input
of the TDC. Use the LEMO 00 socket named “Start” to apply NIM signals (see
for detailed
information).
• Use the USB cable to connect the TDC to the PC. Do not use PC front panel USB connectors; they are
often restricted in performance (see
for further details).
• Connect the power cable to the main connector.
• Install the TDC device driver or software package prior to switching on the TDC.
For sub-release versions 10, 85 & E8
• Use BNC cables to connect your additional signals to the additional inputs of the TDC (e.g. SYNC IN or
TAG IN).
• Please note that all additional inputs are internally 50Ohm terminated and are laid out for 50Ohm
terminated LVTTL (low voltage TTL) signal levels.
Finish the complete cabling before the TDC is turned on and the GUI software is started.
Also, close the software and turn off the TDC before performing any changes to the
cabling.
This applies especially to the connection and disconnection of the start input of the TDC.
The start input of the TDC cannot handle pulses which are arriving in a time interval of
smaller than 120ns, as they are produced by e.g. connecting to and disconnecting from
the start input respectively.
If two subsequent pulses are applied to the start input of the TDC, the device will still
deliver results, but these results will contain wrong timing information.
