© National Instruments
|
7-1
7
Counters
M Series devices have two general-purpose 32-bit counter/timers and one frequency generator,
as shown in Figure 7-1. The general-purpose counter/timers can be used for many measurement
and pulse generation applications.
Figure 7-1.
M Series Counter0 and Frequency Generator
The counters have seven input signals, although in most applications only a few inputs are used.
For information about connecting counter signals, refer to the
section.
Counter Input Applications
The following sections list the various counter input applications available on M Series devices:
•
•
•
•
Co
u
nter 0
Co
u
nter 0
S
o
u
rce (Co
u
nter 0 Time
bas
e)
Co
u
nter 0 A
u
x
Co
u
nter 0 HW Arm
Co
u
nter 0 A
Co
u
nter 0 B (Co
u
nter 0 Up_Down)
Co
u
nter 0 Z
Co
u
nter 0 G
a
te
Co
u
nter 0 Intern
a
l O
u
tp
u
t
Co
u
nter 0 TC
Inp
u
t
S
election M
u
xe
s
Fre
qu
ency Gener
a
tor
Fre
qu
ency O
u
tp
u
t Time
bas
e
Fre
q
O
u
t
Inp
u
t
S
election M
u
xe
s
Co
u
nter 0
Sa
mple Clock
