Hpe5022_Ber_Measurechannelquality - Agilent Technologies E5022B Programming Manual

hpe5022_BER_measureChannelQuality

C Syntax ViStatus hpe5022_BER_measureChannelQuality(ViSession id, ViInt16 seqType);
Visual Basic hpe5022_BER_measureChannelQuality(ByVal id As Long, ByVal seqType As
Syntax Integer) As Long
Description
This function measures the channel quality. The detailed sequence is as follows:
1. Move the head to the write track offset position specified by the
"hpe5022_writeTrackOffset" function.
2. If seqType is set to "hpe5022_SEQ_ER_WR_M", erase the track.
3. If seqType is set to "hpe5022_SEQ_ER_WR_M" or "hpe5022_SEQ_WR_M",
write the data pattern specified by the "hpe5022_BER_selectPattern" function.
4. Move the head to the read track offset position specified by the
"hpe5022_readTrackOffset" function.
5. Measure the channel quality for one revolution.
The "hpe5022_BER_channelQuality_Q" function returns the measurement result
Parameters • id
Description
Direction
• seqType
Description
Direction
Values
Return Values
Completion Code
VI_SUCCESS
Chapter 3
Channel Quality Measurement Function
Specifies the system identifier. This is given by the
"hpe5022_init" function.
IN
Selects the sequence type.
IN
Name
hpe5022_SEQ_ER_WR_M
hpe5022_SEQ_WR_M
hpe5022_SEQ_M
Description
No Error
Function Reference
Value Value
0 Erase ->Write ->Measure
1 Write ->Measure
2 Measure
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