Chapter 2
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PCI-1721 User’s Manual
Advantech Co., Ltd.
www.advantech.com
2.2 Switch and Jumper Settings
The PCI-1721 card has one function switch and five jumper settings.
Fig. 2-1 Card connector, jumper and switch locations
Table 2-1: Summary of jumper settings
Setting the time to reset the analog outputs
Some users will want the capability of clearing each analog output when
the system (or PC) issues a reset signal on the PCI bus. Some users will
want to clear their analog output only as part of system power-on.
The PCI-1721 satisfies both these needs by providing jumper JP1.
Depending on the application, this capability may allow analog
outputs to be “ZERO” without requiring a complete shutdown of
processes controlled by the card.
Complete loss of power to the chip clears the chip memory. Thus, no
matter how JP1 is set, if the power to the PCI-1721 is disconnected, the
analog output initial power-on state will be “ZERO”.
Names of Jumpers
Function description
JP1
Keep last status after hot reset.
Default configuration.
JP6~JP9
4~20 mA
0~20 mA
