Quantifi Photonics BERT 1005 Series User Manual page 63

Syntax :CALCulate<n>:DATA<m>:BATHtub:ELAPsed?[<wsp><TOTAL|NEXT|UNIT>]
Description Query the elapsed time of the bathtub measurement and the time to next point.
Parameters TOTAL: Query the total amount of time the bathtub measurement has been running
NEXT: Query the estimated time to collect the next data point
UNIT: Query the unit of time
By default, TOTAL is returned.
Response A value or string.
Example :CALCulate3:DATA2:BATHtub:ELAPsed? -> 350
:CALCulate3:DATA2:BATHtub:ELAPsed? TOTAL -> 350
:CALCulate3:DATA2:BATHtub:ELAPsed? NEXT -> 27
:CALCulate3:DATA2:BATHtub:ELAPsed? UNIT -> s
Command :CALCulate<n>:DATA<m>:BATHtub:Q?
Syntax :CALCulate<n>:DATA<m>:BATHtub:Q?
Description Query the Q values from the bathtub measurement.
Parameters No parameters.
Response A comma separated string of values, in the format <number of points>, <measured Q>,
<extrapolated Q>.
The first value in the comma separated string of values is the number of points, the
next <number of points> values are the measured Q values, and the final <number of
points> values are the extrapolated Q values.
Example :CALCulate3:DATA2:BATHtub:Q? -> 317,1.6217541e+00,1.6217541e+00,
1.6217541e+00,1.6217541e+00,1.6217541e+00......
:CALCulate<n>:DATA<m>:BATHtub:BERFloor?
Command
:CALCulate<n>:DATA<m>:BATHtub:BERFloor?
Syntax
Description Query the BER floor value from the bathtub measurement.
Parameters No parameters
Response A value representing the BER value at the center of the eye
Example :CALCulate3:DATA2:BATHtub:BERFloor? -> 1.2662386e-47
:CALCulate<n>:DATA<m>:BATHtub:CENTer?
Command
Syntax :CALCulate<n>:DATA<m>:BATHtub:CENTer?[<wsp><UNIT>]
Description Query the center of the eye from the bathtub measurement
Parameters UNIT: Query the unit of the measurement
Response A value representing the center of the eye calculated from the bathtub measurement
Example :CALCulate3:DATA2:BATHtub:CENTer? -> -1.5985557e-01
:CALCulate3:DATA2:BATHtub:CENTer? UNIT -> UI
Command :CALCulate<n>:DATA<m>:JITTer?
:CALCulate<n>:DATA<m>:JITTer?[<wsp><DJ|RJ|J2|J9|J12|UNIT>]
Syntax
Description Query the jitter values from the bathtub measurement.
Parameters DJ: Query the deterministic jitter
RJ: Query the random jitter
J2: Query the total jitter at J2
J9: Query the total jitter at J9
J12: Query the total jitter at J12
UNIT: Query the unit of jitter
Response A comma separated list of values, or a single value. The total jitter for J2,J9, and J12
are calculated through two methods, the Dual Dirac and the total eye opening. The
format of the return is <Dual Dirac>, <Eye Opening>.
By default, the DJ is returned
Example :CALCulate3:DATA2:JITTer? -> 2.319684
:CALCulate3:DATA2:JITTer? DJ -> 2.319684
:CALCulate3:DATA2:JITTer? J2 -> 15.69358, 15.69358
:CALCulate3:DATA2:JITTer? UNIT -> ps
Command :OUTPut<n>:CLOCk:VCOLock?
Quantifi Photonics Ltd. Version 2.04
Bit Error Rate Tester | BERT 1005
63