TXC-03305AIPQ Transwitch Corporation, TXC-03305AIPQ Datasheet - Page 42

• Manufacturer Part Number: TXC-03305AIPQ
• Manufacturer: Transwitch Corporation

Specifications of TXC-03305AIPQ

• Lead Free Status / RoHS Status: Not Compliant

TXC-03305-MB
Ed. 4, September 2000
M13X
TXC-03305
JITTER TOLERANCE
Input jitter tolerance is defined in [GR-499] section 7.3.1 as:
"The minimum amplitude of sinusoidal jitter at a given frequency that, when modulating the signal at an equip-
ment input port, results in more than 2 errored seconds in a 30-second measurement interval."
In accordance with the above, the M13X was tested in all the channelized T1 signals during a 30-second mea-
surement interval when the jitter mask indicated below was applied to the TX DS1 signals when the TX DS3
clock (XCK or DS3CR) and the TX DS1 input clocks were varied over their line rate accuracy specified above.
This requirement was also met when Loop Timing mode was enabled and the maximum amount of tolerable jit-
ter applied to the DS3CR signal (i.e. the TX clock). The M13X tolerated more jitter than is indicated in the GR-
499 mask requirements, as shown below.
The M13X was tested in the T3 and channelized T1/T2
when the jitter mask indicated below was applied to the RX DS3 signal when the RX DS3 clock (DS3CR) and
the channelized DS1 input clocks were varied over their line rate accuracy specified above. The M13X toler-
ated more jitter than is indicated in the GR-499 mask requirements, as shown in Figures 20 and 21.
1. When verifying DS1 jitter tolerance, it is acceptable to loop back the DS3 signal and measure the errors that occur
2. It is sufficient to only check the RX DS1s for errors, however a more complete, but not required, check should
on the demultiplexed DS1 signals. The DJBs should be enabled during such a test to ensure that they do not drop
data.
include all of the signals.
DATA SHEET
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2
signals during a 30-second measurement interval
1