2-54
INSTALLATION
DIVERSITY DELAY: [ON,OFF] (for each
output)
(invalid passcode)
[no error message is issued]
In the above table:
XXX = ANALOG_ON, ANALOG_OFF, DIGITAL1_ON,
DIGITAL1_OFF, DIGITAL2_ON, DIGITAL2_OFF,
COMPOSITE_ON, COMPOSITE_OFF,
or
?
?
returns the current on/off status for each output that is
configured to emit the analog FM processed audio
PASSCODE = ANY VALID PASSCODE
.
If a non-existent control value and/or an invalid passcode is entered, the 8700i
will ignore the command.
You can apply this command anytime after the 8700i boots up. The 30-minute
timeout does not apply.
12.
To set the diversity delay:
Command
Response
TR X.XXXXXXXXX[PASSCODE]
(valid passcode and argument)
DELAY: X.XXXXXXXXX
(invalid passcode)
[no error message is issued]
In the above table:
X.XXXXXXXXX
= the delay time or ?. Acceptable values are
0. 0.000015625 to 13.0000000000 (10 total digits) in incre-
ments of 0.000015625
?
returns the current delay time.
PASSCODE = ANY VALID PASSCODE
.
As long as the delay change does not exceed
±
1.3 seconds, this command chang-
es the only delay in the HD Radio processing path to prevent glitching in the an-
alog FM path. Larger changes cause the analog path delay to change so that the
digital path delay is re-centered and a
±
1.3 second range is again available for
future adjustments.
This command is useful when a station has two transmission chains (typically
main and backup) that require different diversity delay settings. We recommend
first using 8700i PC Remote to set the correct delays for the main and backup
chains. When you have found the correct delay for each transmission chain,
write down the delay times that PC Remote displays. Then program these into
“main” and “standby” batch files that, when executed, send the appropriate TR
command to the 8700i when the on-air transmission chain is swapped.
Содержание OPTIMOD-FM 8700
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Страница 339: ...OPTIMOD FM DIGITAL TECHNICAL DATA 6 37...
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