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It should be possible to hold the HD level within ±1dB of the FM
program channel. But especially with independent audio pro-
cessing setups, that blue line is bound to wander a bit. The
graph scale changes its range to keep the plots on the screen.
The JUSTIN 808 data-logging utility does not keep an extended
record of this level variance.
DATA LOGGING
The time-stamp feature for e-mail notifications, for data logging
and for the alarm log, depends on Internet time, and with the
proper time-zone offset entered. This procedure was detailed
on Page 13, Step 6. Please make sure that the current local time
is displayed by the JUSTIN 808.
Short-term time-alignment and program level logging have been
introduced as “histories” of these two metrics. But a long-term
log of delay errors is created as well, and is accessed only
through the
FM/HD Measurements
menu of the Web interface.
Click the
Data Logging
bar to show the entire logging screen.
The upper portion is reproduced below.
