Agilent Technologies E4991A Service Manual page 127

— Default Cal Coefficient Adjustment
NOTE
If your instrument has option 001(A2 DC Bias), perform A2 Adjustment after performing
the A4 Adjustment.
• A5 Adjustment (Opt.1D5)
If you replace or adjust A5 Board, perform A5 Adjustment only.
The A5 Adjustment consists of the following adjustment.
— A5 Ref Oven Adjustment (Opt.1D5)
• A2 Adjustment (Opt.001)
If you replace or adjust A2 Board, perform A2 Adjustment only.
The A2 Adjustment consists of the following adjustments.
— A2 DC Bias Voltage Adjustment (Opt.001)
— A2 DC Bias Current Adjustment (Opt.001)
— A2 DC Bias R/C Adjustment (Opt.001)
• Default Cal Adjustment
If you replace A1 or A3 or A4 Board, perform Default Cal Adjustment.
The Default Cal Adjustment consists of the following adjustment.
— Default Cal Coefficient Adjustment
NOTE It is necessary to perform the system backup after performing the adjustment so that the
system recovery can be performed correctly. For details, refer to "System Backup (for
serial prefix JP1KH, JP2KH, and MY432)" on page 149
Write ID
Write ID executes writing the serial number and the option information. Perform this
procedure whenever you replace EEPROM with new one. This process can not be
performed without inputting a password. This password is "ctuKobe".
EEPROM Initialize
EEPROM Initialize executes initializing the EEPROM. When you replace EEPROM with
new one, perform this procedure. All Adjustment must be performed after performing this
item. This item is included in the "All Adjustment".
Chapter 3
Adjustment
Adjustment Program
127