Keithley PIO-24, Руководство пользователя

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4-10 Configuring DriverLINX
11. Measure the voltage between signal ground and each bit of the output port
with a DMM or DVM. Make measurements at the cabled mating connector of
your accessory.
12. Each bit set to ON in the AIO Panel should output a logic-high signal at the
corresponding I/O terminal, reading typically about 4 volts (minimum of 2.2
volts) at a DMM/DVM. Each bit set to OFF in the
AIO Panel should output a
logic-low signal at the corresponding I/O terminal, reading typically about
0 volts (maximum of 0.8 volts) at a DMM/DVM. Do one of the following:
NOTE
The typical values shown are valid for boards with TTL compatible out-
puts. For boards with relay outputs (REL-16, PDISO-8, and PIO-32) the
output will be a relay contact closure. For boards with open collector out-
puts (PIO-HV) use a pull up resistor to an appropriate voltage to detect
output state. Refer to the hardware description in this user’s guide for more
details on the output’s electrical specification.
• If the bit patterns set on the AIO Panel do not agree with the logic levels
measured at the I/O terminals, the board is not functioning properly. Stop
here, and determine why.
• If the bit patterns set on the AIO Panel agree with the logic levels mea-
sured at the I/O terminals, then repeat steps 9, 10, and 11 for remaining
output channels.
13. In the
Digital Output Panel
under
Channels
, click on the output channel to
test (channel 0 in this example) as shown in Figure 4-8.
Figure 4-8
Configuring channel 0 for output bit pattern B
14. In the
Digital Output Panel
under
Output Bits
, set the bits of channel
0
for
bit pattern B as shown in Figure 4-8.
15. Measure the voltage between signal ground and each bit of the output port
with a DMM or DVM. Make measurements at the STA-50 terminals or the
cabled mating connector that is connected to the selected CONN-3160-D1
50-pin connector.
KEITHLEY Digital Output Panel
Channels
0 1 2 3 4 5 6 7
7 6 5 4 3 2 1 0 8 9 10 11 12 13 14 15
Output Bits
AA
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