Cronologic xTDC4, Руководство пользователя

Страница: 21 / 32

Default is set to false. If retriggering is enabled the timer is reset to the value of the start
parameter, whenever the input signal is set while waiting to reach the stop time.
crono bool t extend
Not implemented.
crono bool t enable lemo output
Enables the LEMO output.
int start
Precursor. Relative to the trigger signal, the data is delayed by the ’start’ time interval in units
of 6.6 ns (150MHz). Thus, also data prior to the trigger event is recorded.
int stop
Postcursor.
For edge triggering: this is the total length of the recorded signal.
int sources
A bit mask with a bit set for all trigger sources that can trigger this channel. Default is
XTDC4 TRIGGER SOURCE S .
#define XTDC4 TRIGGER SOURCE S 0x00000001
#define XTDC4 TRIGGER SOURCE A 0x00000002
#define XTDC4 TRIGGER SOURCE B 0x00000004
#define XTDC4 TRIGGER SOURCE C 0x00000008
#define XTDC4 TRIGGER SOURCE D 0x00000010
#define XTDC4 TRIGGER SOURCE AUTO 0x00004000
#define XTDC4 TRIGGER SOURCE ONE 0x00008000
3.4.4 Structure xtdc4 channel
Contains TDC channel settings.
crono bool t enabled
Enable TDC channel.
crono bool t rising
Set whether to record rising or falling edges.
crono bool t cc enable
Enable carry chain TDC. Default is true as initialized by xtdc4 get default configuration() . Shall
be left unchanged.
crono bool t cc same edge
Set whether the carry chain TDC records the same edge as THS788 (as backup) or opposite
edge. Default is
true as initialized by xtdc4 get default configuration() . Shall be left unchanged.
crono bool t ths788 disable
Disable THS788 timestamps. Default is false as initialized by xtdc4 get default configuration() .
Shall be left unchanged.
int start
Veto function. Only timestamps posterior to ‘start’ are recorded.
int stop
cronologic GmbH & Co. KG 16 xTDC4 User Guide