Chapter 3 VXI-MXI-2 Configuration andInstallation
PCI-MXI-2 for Linux 3-12 ni.com
The VXI-MXI-2 can also drive or receive the MXIbus CLK10 signal.
Switch S7 controls whether the VXI-MXI-2 drives MXIbus CLK10 from
the VXIbus CLK10 or receives MXIbus CLK10. As shown in Figure3-5c,
if W3 is configured to use the MXIbus CLK10 to generate the VXIbus
CLK10 signal, switch S7 must be configured to receive MXIbus CLK10.
This is shown again in Figure3-7a. If you change the S7 setting to drive
CLK10 out the MXIbus, do not set the W3 jumper to receive the MXIbus
CLK10; instead use the settings shown in Figure3-5a or Figure 3-5b as
appropriate.
Caution Do not configure more than one MXIbus device to drive the MXIbus CLK10.
Having a second device driving MXIbus CLK10 could damage the device.
Figure3-7 shows the configuration settings for receiving and driving
MXIbus CLK10, respectively.
Figure 3-7. Receiving or Driving MXIbus CLK10
Trigger Input Termination
You can use switch S2 to terminate the external trigger input SMB with
50 Ω. Figure3-8a shows the default setting for a nonterminated trigger
input SMB. Use the setting of Figure 3-8b to terminate the trigger input
SMB. Switch S2 is located above switches S3, S4, and S5, which have no
effect on this configuration.
a. Receive CLK10 from MXIbus (Default) b. Drive MXIbus CLK10 from VXIbus CLK10
S7
Drive CLK10 out MXIbus
Receive CLK10 from MXIbus
S7
Drive CLK10 out MXIbus
Receive CLK10 from MXIbus