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ATM Operation
Setting up the Receiver ATM signal
N O T E
Select VP or VC for most test applications. ATM alarms are only monitored if VP or
VC is selected.
6 To measure error or delay performance of the ATM connection, select
measurement of cell errors, cell loss, cell misinsertion and cell delay
simultaneously. For a simple BER measurement you can select
Cell Header at UNI
Bits
8
Cell Header at NNI
Bits
8
GFC - Generic Flow Control, VPI - Virtual Path Identifier
VCI - Virtual Channel Identifier, PTI - Payload Type
CLP - Cell Loss Priority, HEC - Header Error Control
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as the payload in the transmitter and the receiver. This allows the
TEST CELL
. When making a jitter tolerance measurement, select
USER BYTE
7
6
5
4
GFC
VPI
VCI
VCI
HEC
7
6
5
4
VPI
VPI
VCI
VCI
HEC
3
2
1
Bytes
VPI
1
VCI
2
3
PTI
CLP
4
5
3
2
1
Bytes
1
VCI
2
3
PTI
CLP
4
5
or
PRBS
.
PRBS
173
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