AMETEK Lx Series II - Manual (Page 45)

User Manual Lx / Ls Series II
41
Parameter Supplemental Specification
Restrictions Frequency cannot be programmed in external sync mode.
Frequency transient list system is not available in sync mode.
Transient list dwell times are not correlated to external sync but based on
internal timebase.
Units with firmware revision 1.5 or higher:
When switching from INT to EXT sync mode, the difference between the
internal frequency present at the time and the external sync frequency may
not exceed 200 Hz.