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NOTE A: If the system time is out of sync with valid ZDA sentence, this filed is NULL.
ALC - Cyclic alert list
$--ALC, xx, xx, xx, x.x, aaa, x.x, x.x,x.x, ........, aaa, x.x, x.x, x.x*hh <CR><LF>
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| +----+----+--+------------------------------ 5
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+---------------------------------------------- 4
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+--------------------------------------------- 3
| +------------------------------------------- 2
+------------------------------------------ 1
1.
Total number of sentences for this message, 01 to 99
2.
Sentence number, 01 to 99
3.
Sequential message identifier, 00 to 99
4.
Number of alert entries
5.
Alert entry 1
6.
Additional Alert entries
7. Alert entry n
HBT – Heartbeat supervision sentence
$--HBT, x.x, A, x*hh<cr><lf>
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+------------------- 1
1.
Configured repeat interval
2.
Equipment status
3.
Sequential sentence identifier
ARC - Alert command refused
$--ARC, hhmmss.ss, aaa, x.x, x.x, c*hh <CR><LF>
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+----------------------- 2
+---------------------1
1.
Time
2. Manufacturer mnemonic code
3. Alert identifier
4. Alert instance, 1 to 999999
5. Refused alert command, A, Q,O or S
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+-----------------+----------- 7
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+--+-------------------------- 6
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+------------------------------ 5
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+---------------------------- 4
+-------------------------- 3
NVR-3000 OPERATION MANUAL & INSTALLATION MANUAL
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NVR-3000 OM.E 20230109-08
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