Hpe5022_Ber_Berex_Q - Agilent Technologies E5022B Programming Manual

Function Reference
Bit Error Rate Measurement Function

hpe5022_BER_berEx_Q

C Syntax ViStatus hpe5022_BER_berEx_Q(ViSession id, ViPReal 64 ber, ViPInt32 symbol,
ViPInt32 burst, VipInt32 totalSector, ViPInt32 lostSector);
Visual Basic hpe5022_BER_berEx_Q(ByVal id As Long, ByRef ber As Double, ByRef symbol
Syntax As Long, ByRef burst As Long, ByRef totalSector As Long, ByRef lostSector As
Long) As Long
Description This function returns the bit error measurement result.
Parameters • id
• ber
• symbol
• burst
154
Description Specifies the system identifier. This is given by the
"hpe5022_init" function.
Direction IN
Description Returns the measured bit error rate. When all sectors become
lost sectors, a value of 1 is returned as result. Bit error rate is
calculated from the equation below.
------------------------------------------------------------------------------------------------------------------------------------------------- -
BER =
(
TotalSector LostSector
Where:
ErrBitPerByte ='bit' of "hpe5022_BER_errorBitPerByte"
Symbol = 'symbol' of this function
DataBytePerSect = 'data' of "hpe5022_BER_sectorFormat"
TotalSector = 'totalSector' of this function
LostSector = 'lostSector' of this function
Direction OUT
Description Returns the number of error symbols. Agilent E5022/E5023
compares the bit stream by byte and counts the byte where
an error has occured. Error symbol represents the number of
error bytes.
Direction OUT
´
ErrBitPerByte Symbol
) ´
– DataBytePerSect
´
8
Chapter 3