Service Guide 3-13
8719ET/20ET/22ET Adjustments and Correction Constants
8719ES/20ES/22ES Protected Option Numbers Correction Constants (Test 50)
RF Network Analyzers
Protected Option Numbers Correction Constants (Test 50)
This procedure stores the instrument’s protected option(s) information in A7 CPU
assembly EEPROMs.
You can also use this procedure to remove the serial number. You will need a unique
keyword from Agilent Technologies. Refer to step 6 in “Serial Number Correction
Constants (Test 49),” on page 3-11.
CAUTION Perform this procedure only if the A7 CPU assembly has been replaced and
the “Serial Number Correction Constants (Test 49)” procedure has been
performed.
Analyzer warmup time: None
1. Remove the instrument bottom cover and record the keyword label(s) that are located
on the exposed sheet metal next to the CPU assembly (A7). Note that the individual
keyword for each option is installed in the instrument.
NOTE If the instrument does not have a label, then contact the nearest Agilent
Technologies sales or service office. Be sure to include the full serial number
of the instrument.
2. Make sure the A7 Switch is in the alter position (ALT).
NOTE The serial number may also be entered using the optional external keyboard.
Plug the keyboard into the “DIN KYBD” connector on the rear panel and
press .
3. To erase the HP/Agilent logo, press the following:
CAUTION Do not confuse “I” with “1” (one) or “O” with “0” (zero).
4. Enter the keyword by rotating the front panel knob to position the arrow below each
character of the keyword, and then pressing to enter each letter.
Press if you made a mistake.
5. Press when you have finished entering the keyword.
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