參數(shù)資料
型號: DS2196LN
元件分類: 通信及網(wǎng)絡(luò)
英文描述: Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0
中文描述: Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0
文件頁數(shù): 59/157頁
文件大?。?/td> 734K
代理商: DS2196LN
DS2196
59 of 157
Table 7-2:
ALARM CRITERIA
ALARM
SET CRITERIA
when over a 3 ms window,
5 or less zeros are received
when bit 2 of 256
consecutive channels is set
to 0 for at least 254
occurrences
CLEAR CRITERIA
when over a 3 ms window, 6
or more zeros are received
when bit 2 of 256 consecutive
channels is set to 0 for less
than 254 occurrences
Blue Alarm
(AIS) (see note 1
below)
Yellow Alarm
(RAI)
1. D4 bit 2 mode(RCR2.2=0)
2. D4 12th F–bit mode
(RCR2.2=1; this mode is also
referred to as the “Japanese
Yellow Alarm”)
3. ESF mode
when the 12th framing bit is
set to “1” for two
consecutive occurrences
when 16 consecutive
patterns of 00FF appear in
the FDL
when 192 consecutive 0’s
are received
when the 12th framing bit is
set to 0 for two consecutive
occurrences
when 14 or less patterns of
00FF hex out of 16 possible
appear in the FDL
when 14 or more 1’s out of
112 possible bit positions are
received starting with the first
1 received
Red Alarm
(LRCL or RCL)
(this alarm is also referred to
as Loss Of Signal)
NOTES:
1.
The definition of Blue Alarm (or Alarm Indication Signal) is an unframed all 1’ss signal. Blue alarm
detectors should be able to operate properly in the presence of a 10E–3 error rate and they should not
falsely trigger on a framed all 1’ss signal. The blue alarm criteria in the DS2196 have been set to
achieve this performance. It is recommended that the RBL bit be qualified with the RLOS bit.
2.
ANSI specifications use a different nomenclature than the DS2196 does; the following terms are
equivalent:
RBL = AIS
LRCL = LOS
RLOS = LOF
RYEL = RAI
相關(guān)PDF資料
PDF描述
DS21Q43AT Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0
DS21Q43ATN Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0
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DS21Q44T Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0
DS21Q44TN MICROSWITCH, SPDT, SIM ROLLER LEVER; Current, contact AC:5A; Force, operating:91.75gf; Travel, pre:16.0mm; Centres, fixing LxW:22.2mm; Temp, op. max:120(degree C); Temp, op. min:-40(degree C); Length / Height, external:9.25mm; Width, RoHS Compliant: Yes
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