User Manual – Rev BE AMETEK Programmable Power
MX Series 86
3.10.2 Clock/Lock Initialization Settings
The mode of operation of the MX-LKS auxiliary unit is determined by the Clock
mode set in the PROGRAM2 screen. Since most clock and lock systems are
permanently used in this configuration, the clock mode can be set to EXT
(External) at power on by using the INITIAL SETUP3 screen.
Available initial settings and their relationship to the Clock and Lock mode of
operation are shown in the table below.
CLK/ LOC
S TAND
Normal stand alone mode of operation. For standard MX power
source with no clock and lock mode of operation.
MAS TER
For master (-LKM) power source in clock and lock mode of
operation.
AUX
For a uxilia r y (-LKS) power source in clock and lock mode of
operation. Powers up with clock mode set to external.
Table 3-13: Clock and Lock Initialization Settings
3.10.3 Clock/Lock and External Sync Mode
Note that an MX-LKM auxiliary unit is factory configured to operate in Clock and
Lock mode when EXT clock mode is selected in the PROGRAM2 screen. This
means that a MX-LKS cannot be used in normal external sync mode. However,
the MX-LKM master unit can be operated in external sync mode. NOTE: External
sync mode is not available with the FC option.
Furthermore, since the MX-LKM master unit is factory set for Master mode of
operation, it in turn cannot be used as an Auxiliary source in a clock and lock
configuration.
3.10.4 Remote Programming of Clock and Lock systems
Since clock and lock systems have multiple autonomous controllers that are
synchronized in frequency, remote programming of these systems requires that
the application program deals with all MX controllers. This often precludes the
use of RS232C as generally not enough serial ports are available. The use of
GPIB instead also offers the advantage of using the Group Execute Trigger
(GET) capability to effect output changes on all phases (MX's) simultaneously
which is otherwise difficult to do.
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