BNC 745 - Manual (Page 17)

Model 745 Digital Delay Generator. November 2013
Timing principle using internal trigger
Figure - 8. Internal Trigger Timing
In Internal trigger mode, two tunable frequencies are available (IN1 and IN2). On Figure - 8, T1
output uses IN1 trigger with a specified delay of 0ps and T2 output uses IN2 trigger with a non-null
delay.
The MOD745 must be configured (trigger, delay, etc.) before starting any sequences. The individual
Channel Gate Mode is also depicted on Figure - 8. It is obtained by setting general Gate Mode to
“CHANNEL” and T1 Gate mode to “ON”. The result is that the Gate In signal inhibits the trigger source
of the channel T1, that is to say IN1 in that case.
The width parameter doesn’t appear on these two Figures (Figure - 6, Figure - 8). It has to be noticed
that the frequency f used as repetitive input trigger (internal or external) and the maximum width of
a corresponding output channel TX are linked by:
𝑴𝒂𝒙𝑾𝒊𝒅𝒕𝒉 𝑻𝑿 =
𝟏
𝟒𝒇
© Berkeley Nucleonics Corp. 16 Model 745 User Manual