ComputerBoards CIO-DAS801, Руководство пользователя

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The second method of converting the inputs to single-ended is to
install a SIP resistor pack at position RN2. This package of 10K resis-
tors provides a reference to ground for each of the eight Low Input
lines. This type of input behaves like a single-ended input since there
is a reference to ground and floating sources may be measured.
Figure 1-3 shows one analog input line with the SIP resistor installed.
Note that when the SIP resistor package is installed, all eight analog
inputs are single-ended.
If you intend to use an EXP board with the CIO-DAS80#, you should
not install the SIP resistor but you should set the Input Configuration
Switch to Single Ended for both the EXP channel and the CJC
channel.
1.3.3INTERRUPT LEVEL SELECT
The interrupt jumper need only be set if the software you are using requires it. The Uni-
versal Library and other programs which take advantage of the REP-INSW high speed
transfer capability of the board require an interrupt. If you do set the interrupt jumper,
please check your PC's current configuration for interrupt conflicts.
There is a jumper block on the CIO-DAS80# located just above the PC bus interface (gold
pins). The factory default setting has no interrupt level set (the jumper is in the 'X'
position). It is shown in Figure 1-4 set for IRQ 5.
Refer to Table 1-2 for typical IRQ assignments. Figure 1-4. IRQ Level Select Switches
Table 1-2. IRQ Assignments
Note: IRQ8-15 are AT only LPT IRQ7
UNASSIGNED IRQ15 FLOPPY DISK IRQ6
HARD DISK IRQ14 HARD DISK (XT)
LPT (AT) IRQ5
80287 NUMERIC CO-P IRQ13 COM OR SDLC IRQ4
UNASSIGNED IRQ12 COM OR SDLC IRQ3
UNASSIGNED IRQ11 RESERVED (XT)
INT 8-15 (AT) IRQ2
UNASSIGNED IRQ10 KEYBOARD IRQ1
RE-DIRECTED TO IRQ2 (AT) IRQ9 TIMER IRQ0
REAL TIME CLOCK (AT) IRQ8 PARITY NMI
DESCRIPTION NAME DESCRIPTION NAME
1.3.4 WAIT STATE
A wait state may be enabled on the CIO-DAS80# by selecting WAIT STATE ON at the jumper provided on the board. Enabling the
wait state causes the personal computer's bus transfer rate to slow down whenever the CIO-DAS80# is written to or read from. The
wait state jumper is provided in case you have a computer with an I/O bus transfer rate which is too fast for the CIO-DAS80#. If your
board were to fail sporadically in random ways, you could try using it with the wait state ON.
1.3.5 INSTALLING THE CIO-DAS80#
1.
Turn the power off.
2. Remove the cover of your computer. Please be careful not to dislodge any of the cables installed on the boards in your computer
as you slide the cover off.
3. Locate an empty ISA expansion slot in your computer
4. Push the board firmly down into the expansion bus connector. If it is not seated fully it may fail to work and could short circuit
the PC bus power onto a PC bus signal. This could damage the motherboard in your PC as well as the CIO-DAS80#.
3
Figure 1-3.
Analog Input Configuration