2.10.1.10 - System Timer Low/High Read (Modes 10 & 11) [UE9 Datasheet]
The LabJack UE9 has a free-running internal 64-bit system timer with a frequency of 750 kHz. Timer modes 10 & 11 return the lower or upper 32-bits of this timer. An FIO line is allocated for these modes like normal, even though they are internal readings and do not require any external connections.