Chapter 2
Configuration and Startup Procedures
2-16
ni.com
The
SYSFAIL
LED is lit whenever any device in the system is asserting the
VXIbus SYSFAIL* signal.
The
ACCESS
LED flashes whenever the GPIB-VXI/C is accessed from the
GPIB or from the VXIbus. It also indicates when its MODID is asserted.
Self-Test Operation
The self-test sequence tests the basic functionality of many GPIB-VXI/C
components, including EPROM, RAM, I
2
C bus, RS-232 port, DMA
channels, GPIB port, interrupt logic, timer, and VXIbus registers (MIGA).
You can execute full tests of the GPIB-VXI/C in diagnostics mode, as
described in Chapter 5,
RM Operation
The RM waits until all devices have stopped driving the VXIbus
SYSFAIL* signal, or until five seconds have elapsed after the VXIbus
SYSRESET* signal is negated. During this period, all of the VXIbus
devices in the system should have completed their self-tests.
Note
You can configure the GPIB-VXI/C to wait for any number of seconds before
RM operations begin.
The RM then scans Logical Addresses 1 through 254 for
static
configuration devices
(
SC devices
). For each SC device found, it reads
the device class and manufacturer’s ID code from the ID Register and the
model code from the Device Type Register. If the device is an extended
device, the RM reads its Subclass Register. The RM then performs slot
associations for each static configuration device by reading its Status
Register while asserting each MODID line.
4
OFF
ON
ON
Performing RM
—
5
OFF
ON
ON
OFF
OFF
ON
OFF
ON
ON
ON
ON
OFF
Online
Failed
Failed
In nonvolatile
configuration or
diagnostics mode
—
Failed while in RM
Failed while online
—
Table 2-9.
Front Panel LED Indications for RM Operation (Continued)
Sequence
FAILED
TEST
ON LINE
State
Point of Failure
