UM_NBASE-T_C
OLOUR
REV.E
09/2018
P
A G E
|
39
7.6.2
Counters & Timers
All the input Signals (Event/Trigger, Reset and Lock) of both Timers and Counters are given in the table below :
Counter Description
The Counter counts the Event Source Edges.
The counter Duration is set and when the counted value reaches the
duration, the Output of the counter rises to 1. If the reset input of the
counter is not set (Off), the counter resets immediately : The end count
value is set in the “Value at Reset”, the output is reset and Counter restarts
counting on the same event.
The Reset input can be set on an external source and also can maintain the
reset of the counter (on level)
As soon as the Reset input is set but not active, the counter counts. If it
reaches the duration before any reset, the output rises to 1 and the counter carries on counting. Then if the
Reset arises, the “Value at Reset” is set with the current value (even higher than the duration), the output is
set to 0 and the counter can restart counting on the same even as soon as the reset input switches down to 0.
If the Reset arises before the counter has reached the duration, the “Value at Reset” is set with the current
value (even lower than the duration), the output is set to 0 and the counter can restart counting on the same
even as soon as the reset input switches down to 0.
The Counter can also be locked by an external source : As soon as the lock input is active, the counter value
doesn’t increment on an Event Source edge but can be reset if the reset signal arises.
Signal
Value
Counter Sources
Timer Sources
Event
Reset
Lock
Trigger
Reset
Lock
Off
0
-
√
√
-
√
√
Line Trigger 1
1
√
√
√
√
√
√
Line Trigger 2
2
√
√
√
√
√
√
Frame Trigger
3
√
√
√
√
√
√
FLO
(Exposure Active)
4
√
-
√
-
-
√
Counter 1 End
5
√
√
√
√
√
√
Counter 2 End
6
√
√
√
√
√
√
Timer 1 End
7
√
√
√
√
√
√
Timer 2 End
8
√
√
√
√
√
√
L3
9
√
√
√
√
√
√
L4
10
√
√
√
√
√
√
L5
11
√
√
√
√
√
√
L6
12
√
√
√
√
√
√
Frame Valid
13
√
√
√
√
√
√
Acquisition Active
14
-
√
√
-
√
√
Software
15
-
√
√
-
√
√
Rotary Enc. Output
16
√
-
√
√
-
√
Counter
Event
Source
Reset Source
CO
Lock Source
