Appendix E Sequence Examples
E-16
E.5.4 Bathtub measurement execution example
This section describes an example procedure for Bathtub measurement.
This example assumes that DEMUX has been synchronized with the
input data by executing Auto Search beforehand. (Refer to E.4 Auto
Search Execution Example.)
Table E.5.4-1 Bathtub measurement setting example
Remote Commands Explanation of Commands
:UENT:ID 1
:SYST:CFUN OFF
:SYST:CFUN BTUB32
:SENS:MEAS:BATH:SELS
USB11,1,ON
:SENS:MEAS:BATH:ASE OFF
:SENS:MEAS:BATH:MODE REP
:SENS:MEAS:BATH:TIM 5
:SENS:MEAS:BATH:RES:MUI 4
:SENS:MEAS:BATH:ECO COAR
:SENS:MEAS:BATH:RANG E_10
:SENS:MEAS:BATH:CALR
E_5,E_10
:SENS:MEAS:BATH:STAR
:SENS:MEAS:BATH:STAT?
:SENS:MEAS:BATH:STAT?
:SENS:MEAS:BATH:STOP
:SYST:MMEM:BATH:STOR
"C:\Test\btexample",PSB,CSV
:SYST:MMEM:BATH:STOR
"C:\Test\btexample",PSB,BIN
:SYST:CFUN OFF
Sets the remote command destination to MP1800A.
Closes the Automatic Measurement screen
currently open.
Opens the Bathtub measurement screen.
Sets the Bathtub measurement target to USB11
(DEMUX).
Sets so that Auto Search is not performed when
measurement starts.
Sets measurement to Repeat mode.
Set the repeat measurement count to five times.
Sets the minimum number of Delay steps to "4
mUI".
Determines BER for a measurement point when an
error is counted during measurement at that
measurement point.
Sets the lower limit for the measured BER range to
1E–10.
Sets the BER range used for jitter calculation from
1E–5 to 1E–10.
Starts Bathtub measurement.
Determines that Bathtub measurement has
started. A return value of "1" indicates that
measurement has started.*
1
Determines that Bathtub measurement has ended.
A return value of "0" indicates that measurement
has ended.*
1
Stops Bathtub measurement.
Saves the measurement results in CSV format to a
specified folder.*
2
Saves the measurement results in BIN format to a
specified folder.*
2
,
*
3
Closes the Bathtub screen.
*1: Use processing corresponding to C language "for" and "While"
statements for this processing to send queries until the expected
value is detected. Set the sending interval between queries to at
least 200 ms to avoid overloading the instrument used for the
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