RS-485 1-2 1-3,2-4 1-3,2-4 3-5,4-6 - -
(Please refer to Figure 2-18 in the manual for specific pin numbers. The actual jumper combination is quite complex, so it is necessary to follow the instructions in the table.)

Installation and Hardware Replacement Guide
1. Compatible with chassis
PXI-3920/3910 supports the following chassis:
ADLINK: PXIS-2506, 2508, 2558T-B (requires special BIOS settings), 2630, 2670, 2700
Any National Instruments PXI chassis
It is strictly prohibited to install in the following chassis: PXIS-2556/2556T, 2558T-A, 2650/2650T, 2680P, 2690P.
2. Installation steps
Turn off and disconnect the power, and wear an anti-static wristband.
Position the system slot (Slot 1), align the upper and lower edges of the controller with the guide rail, and smoothly slide it in.
Push in and lock the pop-up/injection handle to ensure a secure connection with the backplate.
Tighten the panel screws and connect peripheral devices (keyboard, mouse, monitor, etc.).
3. Replace SATA hard drive
The hard drive is located on the back of the module. Remove the four fixing screws and carefully pull them out (be careful not to bend the board to board connectors). After replacing with an SSD or other compatible 2.5-inch SATA hard drive, reverse the operation.
4. Install CompactFlash card
The CF slot is located under the hard drive, and the hard drive needs to be removed first. Insert the CF card into the socket in the correct direction and press it into place, which can be used as a system disk or data disk. Priority can be set in BIOS to boot from CF (see next section).
BIOS configuration and boot device settings
1. BIOS entry
Press the Del key to enter Phoenix Ward BIOS settings during startup.
2. Priority of device startup
Default boot from SATA hard drive. Can be modified as needed:
Starting from SATA HDD: Advanced BIOS Features → First Boot Device → Hard Disk, then set Ch2 M. (i.e. SATA) to the first position in Hard Disk Boot Priority.
Starting from the onboard CF card: Similarly, select Hard Disk for First Boot Device, and set Ch0 M. (CF card) to the first position in Hard Disk Boot Priority.
Starting from USB CD-ROM: Select USB-CROM for First Boot Device.
Starting from USB flash memory or external hard drive: Select Hard Disk for First Boot Device and set USB-HDD0 (or corresponding model) to the first position in Hard Disk Boot Priority.
Starting from USB floppy drive: Select USB-FLOPPY for First Boot Device.
3. Cooperate with PXI-2558T-B chassis
The chassis is equipped with an 8.4-inch LCD touch screen and requires LVDS output to be enabled in the BIOS
Enter Advanced Chipset Features
Set Boot Display to CRT+LVDS
Set the Panel Resolution to 800 x 600
After saving and exiting, the LCD will display normally.

Driver installation process
After installing Windows 2000/XP/Vista, the following drivers need to be installed one by one (all located in the Driver Installation PXI Platform PXI controller PXI-3910_20 directory on the accompanying CD):
1. Chipset driver
Path: Shipset 2000_XP_Vista , execute Setup. exe. This driver enables the operating system to correctly recognize 915GME chipset, PCIe, SATA, USB, etc.
2. Graphics card driver (VGA)
Path: VGA 2000_XP , execute Setup. exe. If using the PXIS-2558T-B chassis, it is necessary to set the graphics card driver to "dual display" mode (extended desktop or clone) to simultaneously drive the LCD and external display.
3. Ethernet driver
Path: Ethernet 2000 (Win2000) or Ethernet XP (WinXP). Two Marvel network cards need to be installed separately. When an unknown network controller appears in the device manager, right-click to update the driver and manually specify the path.
4. Audio driver
Win2000/XP: First install the UAA (Universal Audio Architecture) patch (KB888111), which is located in the corresponding version of Audio UAA, and then execute Audio 2000_XP Setup. exe.
WinVista: Directly execute Audio Vista Setup. exe.
5. GPIB driver
Path: GPIB 2000_XP_Vista , execute Setup. exe. Provide NI-488.2 compatible libraries and utilities after installation.
6. PXI Trigger I/O
Path: PI_Trigger 2000_XP_Vista , after installation, the trigger signal can be programmed through API routing (see Appendix A for details).
7. Watchdog Drive (WDT)
Path: WDT 2000_XP_Vista . After installation, the watchdog timer function can be used (see Appendix B for details).
PXI triggers programming interface
The routing of trigger signals can be flexibly controlled through the functions in pitrigio. h.
TRIG_Init(): Initialization triggers the I/O function, which must be called first.
TRIG_Close(): Release resources and call before exiting the program.
TRIG_SETSoftTrg (status): Generate software trigger signal, status=0 low level, 1 high level.
TRIG_Trigger_Soute (source, dest, halfway): Set the routing path. Source options include SMB (panel), SOFT (software), TRIG0~7 (backplane trigger line); Dest can choose SMB or TRIG0~7; Halfway is only used when source=SOFT and dest=SMB, and a trigger line must be specified as a relay. Otherwise, it is set as PXI_TRIG_VALんE.
TRIG_Trigger_Clear(): Clears all routing settings.