Changing The Recording Length - Philips V24CT User's Reference Manual

Additional Information
Changing
Delayed and realtime recordings can be extended or continued.
the
Extending a timed recording resets the runtime. You can extend a
Recording
recording as many times as needed.
Length
In the example below, the recording with a runtime of 12 seconds is
extended after it has been running 6 seconds. The runtime is reset,
producing a recording of 18 seconds of waveforms.
6-42 Recording Functions
Original Runtime
Seconds
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
. . .
Additional Runtime
Total length of
recording = 6 sec. + 12 sec.,
or 18 sec.