Sony DVCAM DSR-PD170P Operating Instructions Manual page 92

Setting time values
Making the time code continuous at back space editing
Set TC MAKE to REGEN in the menu settings to make the time code continuous when
the recording has been interrupted or when the cassette tape has been removed from
the camcorder between shootings.
When the camcorder is in recording pause mode, the recorded time code is read from
the tape and synchronized to the internal time code generator.
Once you set TC MAKE to REGEN in the menu settings
Even if TC RUN is set to FREE RUN in the menu settings, the running mode is
automatically set to REC RUN.
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