Tektronix LTA7P Series, Service Manual

Page: 27 / 172

Specifications
TLA7Nx, TLA7Px, & TLA7Qx Logic Analyzer Module Service Manual
1- 5
Table 1- 3: LA module trigger system (Cont.)
Characteristic Description
Counter/Timers 2 counter/timers, 51 bits wide, can be clocked up to 250 MHz.
Maximum count is 2
51
.
Maximum time is 9.007 X 10
6
seconds or 104 days.
Counters and timers can be set, reset, or tested and have zero reset latency.
Signal In 1 A backplane input signal
Signal In 2 A backplane input signal
Trigger In A backplane input signal that causes the main acquisition and the MagniVu
acquisition to trigger if they are not already triggered
Active trigger resources 16 maximum (excluding counter/timers)
Word recognizers are traded off one-by-one as Signal In 1, Signal In 2, glitch
detection, setup and hold detection, or transition detection resources are added.
Trigger States 16
n
Trigger State sequence rate Same rate as valid data samples received, 250 MHz maximum
Trigger Machine Actions
Main acquisition trigger Triggers the main acquisition memory
Main trigger position Trigger position is programmable to any data sample (4 ns boundaries)
Increment counter Either of the two counter/timers used as counters can be incremented.
Start/Stop timer Either of the two counter/timers used as timers can be started or stopped.
Reset counter/timer Either of the two counter/timers can be reset.
When a counter/timer is used as a timer and is reset, the timer continues in the
started or stopped state that it was in prior to the reset.
Signal out A signal sent to the backplane to be used by other modules
Trigger out A trigger out signal sent to the backplane to trigger other modules