參數(shù)資料
型號: PCADADIO-CS
英文描述: PC(ISA)BUS I/O CARD
中文描述: 電腦(ISA)總線的I / O卡
文件頁數(shù): 12/26頁
文件大?。?/td> 393K
代理商: PCADADIO-CS
Page 12
2192-09061-000-000
J489 PCADADIO
Link LK9, LK10 and LK11: ADC Trigger Sources
These three links enable the three different ADC trigger sources. Each trigger source is enabled
when a link is fitted.
Links LK12, LK13, LK14, LK15: Digital I/O Reset State
Thee links select the state of the digital I/O lines at reset in nibble (4 bit) groups.
LK15
LK14
LK13
LK12
Digital I/O lines DIG0-3
Digital I/O lines DIG4-7
Digital I/O lines DIG8-11
Digital I/O lines DIG12-15
Link LK16: Counter/Timer Channel A Clock Source
Link LK16 selects the clock source for counter/timer channel A
Link LK17: Digital I/O Reset Test Link
Used for automated board testing of the digital I/Os, to ensure they reset into the correct states
and should be left in position A.
+LK9 fitted
Enable software triggering
LK10 fitted
Enable hardware triggering
LK11 fitted
Enable counter/timer channel A triggering
LKxxxA fitted
Sets the nibble low
+ LKxxxB fitted
Sets the nibble high
LK16A
Clocked by the output of counter/timer channel C output
+ LK16B
1MHz Clock
Please note that only one link should be fitted for reliable operation
Reset high should be used when the digital I/Os are to be used as inputs, otherwise the
lines will be driven low as outputs which may cause damage. The link associated with
each nibble is shown below.
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