Agilent Technologies 2948, 2712A manual IFirmware Revision 18387A Serial No, HP 8904A Opts 02/01

Service Model 8904A

HOW TO RESTORE OPTIONS 001,003, AND 005

IN A REPLACEMENTA2 DIGITAL ASSEMBLY

Description

If the A2 Digital Assembly has been replaced by a new or exchange assembly, the instrument’s serial number suffix will need to be entered into non-volatile memory (RAM). (Restoration of the serial number is documented in the previous procedure.) After the serial number has been restored, Options 001, 003, and 005 can, where applicable, be restored.

The procedure requires entering of an option Codeword which is unique to the serial number and option number. The Codeword is printed on a label inside the instrument.

The procedure is written with simple steps followed by detailed notes. Normally, it is only necessary to follow the simple steps and ignore the notes. Refer to the notes when a step doesn’t work quite right.

Procedure

1.Switch LINE to OFF and then back to ON. After the instrument powers up, the display should read

* HP 8904A Main Selection Level * fl Channel Config.

2.Press SHIFT PRESET. Check that the serial suffix matches the number on the rear panel and check that the option being restored is not already present. The display will look something like the following then after about 3 seconds it will time out. (The example shows an instrument with serial suffix 12345 with Options 002 and 001 installed.)

HP 8904A Opts 02/01	I
IFirmware Revision 18387A Serial No 12345

NOTE

a.The SHIFT key is the blue key. The PRESET key is labeled in blue above the C. key.

b.After 3 seconds the display will time out and read as in step 1. Press SHIFT PRESET as often as needed to view the option and serial display.

c.I f the serial suffixis 00000, the instrument will need its serial number entered. Refer to How to Restore the Serial Number in a Replacement A2 Assembly.

d.The displayed option numbers are only two digits (for example, 01) even though the official option numbers are three digits (for example, 001).

e.The presence of options other than the one being retrofit doesn’t ’matter.

8-46Troubleshooting (Options 001, 003, and 005)