b. Adjust the ALC Slope so that the power at the
start and stop frequencies (of the analog sweep
for band 0) match as closely as possible the
normalized straight line in step sweep mode.
When completed, press nfor the next band.
c. Using the Slope and Offset adjustment keys,
continue until the ALC Slope for all bands has
been adjusted.
d. Type:Xand press <ENTER> to exit the cali-
bration routine. (The $prompt will appear on
the screen.)
e. Record step completion on the Test Record.
6. Store the new DACs setting values in non-volatile
memory (EEPROMs) on the A17 CPU PCB as fol-
lows:
a. Type:calterm 787 and press <ENTER>.
(The $prompt will appear on the screen when
the data has been stored.)
b. Record step completion on the Test Record.
4-30 682XXB/683XXB MM
ALC SLOPE
CALIBRATION CALIBRATION
CAUTION
Whensaving calibration data, turn-
ing off the instrument before the $
prompt returns to the screen can
cause all stored data to be lost.