Specifications
Reference Manual 
MHM-97408, Rev. 2
June 2008
2-3
CSI 9420
Begin by removing the power module-side housing cover. This will expose the 
terminal block and HART communication terminals. Connect the power 
module to supply power for configuration. This process is illustrated in Figure 
2-2. 
Figure 2-2. 375 Field 
Communicator Connections
For configuration, the CSI 9420 will receive any HART communications from 
a handheld Field Communicator, AMS Device Manager, or other 
HART-enabled host. When using a Field Communicator, any configuration 
changes must be sent to the transmitter by using the Send key (F2). AMS 
Device Manager configuration changes are implemented when the Apply 
button is clicked.
NOTE:
The CSI 9420 enters “HART Listen” mode for communication on the wired 
interface. When doing so, “HART Listen” is displayed on the optional LCD, if 
installed. A finite amount of time is required to enter this mode and the device 
is unable to do so during its boot sequence or while performing its real-time 
vibration measurement. For this reason, it may be necessary to “retry” the 
initial wired HART handshaking sequence. If repeated attempts to establish 
wired communication fail, you can force the device into HART Listen made by 
removing the front cover and pressing the “CONFIG” button once. Pressing 
the CONFIG button a second time causes the device to exit HART Listen 
mode. Once the device has entered HART Listen mode, it will remain in this 
mode until the CONFIG button is pushed, power is cycled, or no activity is 
seen on the wired interface for three (3) minutes. 
The basic steps for configuring the CSI 9420 are as follows:










