Jäger ADwin-Pro, Описание системы и аппаратного обеспечения

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Pro I: Digital-I/O- and Counter Modules
Pro-CNT-8/32 Rev. A
ADwin
108
ADwin-Pro Hardware, manual version 2.9, June 2006
5.8.8 Pro-CNT-8/32 Rev. A
To this module you find an improved successor module Pro-CNT-16/32 Rev. A
(see page 116 ).
The counter module Pro-CNT-8/32 Rev. A has 8 counters (32 bit). All count
rates can be loaded into the register with a single ADbasic command so that
all counter values can be latched simultaneously. It is also possible to latch the
counters individually. With a rising edge of a TTL pulse the 32-bit counter incre-
ments by one. The counter can be cleared by software command. The count
rate can be determined by the difference between two successive register val-
ues. Since the register access is discrete-time, the frequency can be calcu-
lated online.
Fig. 203 – Pro-CNT-8/32 Rev. A : Block diagram
The module Pro-CNT-8/32 Rev. A is equipped with 8 times the components
shown in the block diagram; exception: the event input and the control register,
which can only be found once on the module.
Fig. 204 – Pro-CNT-8/32 Rev. A : Pin assignment
NOTE: Only Counter #1 is shown for clarity of the schematic.
Control registers
32 bit Counter #1...#8
32 bit Latch #1...#8
CLK
EN
CLR
ADwi
n
-P
ro
bus
CLK #n
EVENT
10k
10k
DGND
EVENT IN
RESERVED
CNTR 1 CLK
CNTR 5 CLK
CNTR 2 CLK
CNTR 6 CLK
CNTR 3 CLK
CNTR 7 CLK
CNTR 4 CLK
CNTR 8 CLK
RESERVED
DGND
+5V, <100mA (unfused)
DGND
19
18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20
RESERVED
RESERVED
RESERVED
RESERVED