Hpe5022_Ber_Prbspattern - Agilent Technologies E5022B Programming Manual

Function Reference
BER Data Pattern Definition Function

hpe5022_BER_prbsPattern

C Syntax ViStatus hpe5022_BER_prbsPattern(ViSession id, ViInt16 pat, ViInt32 rand_coef,
ViInt32 rand_init);
Visual Basic hpe5022_BER_prbsPattern(ByVal id As Long, ByVal pat As Integer, ByVal
Syntax rand_coef As Long, ByVal rand_init As Long) As Long
Description This function configures the PRBS (pseudo random bit sequence) pattern and
assigns the data pattern number. The "hpe5022_BER_selectPattern" function
selects the data pattern number to be used for bit error measurement.
Parameters • id
• pat
• rand_coef
• rand_init
34
Description Specifies the system identifier. This is given by the
"hpe5022_init" function.
Direction IN
Description Selects the data pattern number to be assigned.
Direction IN
Values Same as 'pat' parameter in the
"hpe5022_BER_selectPattern" function.
Description Specifies the coefficients of the pseudo random sequence's
generating polynomial. LSB represents the 0'th order
coefficient of the generating polynomial. This function can
generate a pseudo random data up to a maximum of 16th
order.
Direction IN
Preset Value 137 (X
Values
Name
hpe5022_BER_RAND_COEF_MIN
hpe5022_BER_RAND_COEF_MAX
Description Specifies the initial value of the pseudo random generator.
Direction IN
7 3
+X +1)
Value
3
65535
Chapter 3