6-42 Settings Date Code 20010518
SEL-2020 Instruction Manual
Table 6.19: Calibration Settings
Setting Comment
OSCFREQ
Prompt. Oscillator Frequency (kHz).
Description. Enter the measured or recorded oscillator frequency. Used to correct
the real-time clock for the difference between actual and ideal oscillator frequency.
(See the example below.)
CVALID
Prompt. Calibration Settings Valid (Y/N).
Description. Set to Y (Yes) to validate the settings. This will clear a SET failure as
reported by the STATUS command. You are prompted for this setting only if it is
currently set to N (No).
Type SHO C<ENTER> and record the OSCFREQ setting so it can be re-entered after the
ROMs are changed. The OSCFREQ setting used in the following example is used only to show
the setting process.
After changing ROMs, use the SET C command to enter the recorded frequency and set the
settings to VALID as shown in the example below:
*>>SET C<ENTER>
SET C<ENTER>SET C<ENTER>
SET C<ENTER>
Calibration settings
Oscillator Frequency (kHz) OSCFREQ =16777.217 ?16780.110<ENTER>
16780.110<ENTER>16780.110<ENTER>
16780.110<ENTER>
Calibration Settings Valid (Y/N) CVALID = N ?Y<ENTER>
Y<ENTER>Y<ENTER>
Y<ENTER>
OSCFREQ = 16780.110
Save changes (Y/N) ?Y<ENTER>
Y<ENTER>Y<ENTER>
Y<ENTER>
*>>
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