Chapter 3 203
Backing Up and Reloading Correction Constants
Backing Up Analyzer Correction Constants
Retrieve the A12 step-gain and CALTGX
correction constants
1. Press the following keys to view the current A12 step-attenuator
correction constants.
CAL, More 1 of 4, More 2 of 4
SERVICE DIAG
DISPLAY CAL DATA
2. Look at the first five entries in the CA ATT ERR column; they are
the amplitude errors for the 1 dB, 2 dB, 4 dB, 8 dB, and 16 dB
step-attenuators.
3. Record the amplitude errors (correction constants) for the five
step-attenuators in Table 3-14.
Step 4 is for analyzers equipped with Option 010 or 011 only. Skip
this step for all other analyzers.
4. Record the CALTGX slope and offset correction constants in
Table 3-15. The correction constants are printed on a label that is
located on the A7A1 Tracking Generator Control Board assembly.
File the completed copy of the Correction Constant Backup-Data
Record for future reference.
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