  The future Laser Interferometer Space Antenna (LISA) mission, which has
successfully passed Mission Formulation phase, is in planning to be launched in
2030s. One of the ubiquitous LISA sources are the white-dwarf binaries (WDB) of
which $\sim$40 are guaranteed sources as of now, making LISA unique in
comparison to its ground-based counterpart. The current hardware design in
planning necessitates a thorough check to determine whether the various locking
schemes influence the guaranteed sources' signals significantly in order to
re-consider that what is hard-coded in the phasemeter before launch for
pre-science operations phase. Comparison of the phasemeter output of a face-on
(V407Vul) binary and an edge-on (ZTFJ1539) binary indicates that the non-swap
locking scheme, N2a, is optimal for instrument calibration. Additionally, the
influence of the $\sim 7$ min orbital period edge-on source in two of the
locking schemes yields a difference of maximum $\leq 10\%$ at the Time Delay
Interferometry (TDI) output for data stream of one day. Simplified analyses
show that neither of the locking schemes is favoured in the post-processing
level. We find similar amplitudes in the TDI output stream for the face-on
system V407Vul and the edge-on system ZTFJ1539 which leads to a significantly
smaller inclination bias for the non-swap locking scheme. Additionally, a
larger amplitude for edge-on systems will benefit most verification systems as
the population of verification systems is biased towards edge-on systems as
they are easier to detect in electromagnetic data.
