Commands Listed in Alphabetical Order
HORizontal:F
RAMescan:STARTBit
This command sets o r queries the bit number of the first bit sc anned in the
FrameScan Acquisition mode when Auto Position mode is enabled. The Start
Bit value is u
sed to help determine the Horizontal Position when FrameScan
starts. The start bit setting may be a noninteger number and has a minimum
value determined by the minimum hardware insertion delay multiplied by the
selected bit rate. There is no interaction with Scan Bits. Sending this command is
equivalent to setting a value in the Start Bit control in the FrameScan section of
the Horizontal Setup dialog box.
Group
Horizontal
Syntax
HORizontal:FRAMescan:START Bit <NR3>
HORizontal:FRAMescan:START Bit?
Related Commands
HORizontal:FRAMescan:AUTOPosition
Arguments
NR3 spec ifies the starting bit location for the scan.
Examples
HORIZONTAL:FRAMESCAN:START BIT 200 sets the first bit scanned to 200.
HORIZONTAL:FRAMESCAN:START BIT? might return
HORIZONTAL:FRAMESCAN:START BIT 45.0000000000E+003, indicating that
the first bit scanned in FrameScan mode when Auto Position is enabled is bit 450.
HORizontal:FRAMescan:STATE
This command sets or queries the FrameScan mode. Scanning sta rts as soon as
you enable FrameScan. Sending this command is equivalent to checking Enabled
in the FrameScan section of the Horizontal Setup dialog box.
FrameScan acquisitions allow detailed display and analysis of individual,
complete waveforms or o f the bit sequences leading up to a failure. This ability
to identify the specificpatternsthatcausethefailures makes using FrameScan
mode superior to traditional methods of analyzing pattern-dependent failures in
high bit rate communications signals.
Refer to the online help for this instrument for additional information about
FrameScan.
Group
Horizontal
DSA/CSA/TDS8X00/B Series Programmer Manual 2-163
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