Theory of Operation
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16900A, 16902A, and 16903A Service Guide
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shortcut on the Windows desktop and/or the Windows start
menu. The GUI application may auto- run when a user logs
onto the machine.
The logic analyzer device drivers communicate directly with
all of the hardware. This includes the frame hardware and
all modules plugged into the frame. All other Agilent
software in the system communicates with the drivers in
order to access the hardware. Therefore, missing drivers
look like missing hardware to the Agilent software. The
frame power button LED will flash when the frame is first
powered on and become steady once the frame drivers have
loaded. A flashing power button LED should indicate:
1
The frame is in the middle of a power up or power down
sequence.
2
The frame hardware was not recognized by the PnP
system.
3
The frame drivers are missing.
Once the Windows kernel and the system drivers are loaded,
a variety of Windows services (background processes) are
started automatically by the system. These services are like
UNIX/Linux daemons. They run silently in the background
in order to provide system services. They run before any
user has logged onto the system. If the logic analyzer
product is installed on the system, a logic analyzer service
called "Agilent Logic Analysis" should be running.
The logic analyzer service carries the following general
responsibilities:
•
System manager for the local frame.
•
Communicates with local GUI application software.
•
Listens for connection requests across the LAN (remote
connect from other systems).
•
Initialization of all local frame hardware including
modules. This initialization includes loading of all FPGAs
that are not loaded directly by boot- EEPROMs when
power is first applied to the system.
•
Hardware monitoring.
•
Control over the "Touch Off" and "Keyboard" front panel
buttons (if applicable).
The logic analyzer service must be started and fully
initialized before the application software will be allowed to
run. The logic analyzer drivers are not required for the
application software to run – however the software will not
Summary of Contents for 16900A
Page 1: ...Agilent Technologies Agilent 16900A 16902A and 16903A Logic Analysis System Service Guide...
Page 6: ...6 16900A 16902A and 16903A Service Guide...
Page 14: ...14 16900A 16902A and 16903A Service Guide 1 General Information...
Page 18: ...18 16900A 16902A and 16903A Service Guide 2 Preparing for Use...
Page 22: ...22 16900A 16902A and 16903A Service Guide 3 Testing Performance...
Page 86: ...86 16900A 16902A and 16903A Service Guide 6 Replacing Assemblies...
Page 102: ...102 16900A 16902A and 16903A Service Guide 7 Replaceable Parts...
