Incaseofdi~Culty - Agilent Technologies HP 8719D Service Manual

Loading Firmware Into a New CPU
Use this procedure to load flrmware for an instrument whose CPU board has
been replaced.
1. Turn off the network analyzer.
2.
Insert the lirmware disk into the instrument's disk drive.
3. Turn the instrument on. The llrmware will be loaded automatically during
power-on. The front panel LEDs should step through a sequence as fhmware
is loaded. The display will be blank during this time.
At the end of a successful loading, the LJZDs for Channel 1 and rllestport 1
that was loaded.
Note
Any time the A7 CPU assembly is replaced, all of the correction
constants must be regenerated or recalled, and stored on the
new CPU assembly. Hewlett-Packard recommends that you
store the correction constant data to a 3.5" disk. Refer to the
If the firmware did not load successfully, LED patterns on the front panel can
n
help you isolate the problem.
If the following LED pattern is present, an acceptable iirmware lllename
q
was not found on the disk. (The desired format for flrmware flenames is
HP 8719D/2OD/22D.
Backup Disk Procedure" in this chapter to do this.
and Correction Constants 341