AMETEK Compact IX 2253 - Manual (Page 49)

User Manual 2253i / 2253iX
AMETEK California Instruments 49
3.9.1 Configuration settings
Units configured with the –LKM option will show the Clock as INT (internal) and the mode as
CLK/LOC on the CONTROL screen. Units configured with the –LKS option can be set to INT (internal)
or EXT (external) clock from the CONTROL screen. The MODE setting on the CONTROL screen of
the –LKS unit determines the power on state for the clock setting. When set to STAN (Stand-alone
operation), the unit powers up with INT clock. When set to CLK/LOC mode, it powers up in EXT clock
mode suitable to clock and lock system operation. See section 4.2.5 for details.
3.9.2 Frequency measurements on –LKS units
AC power source models configured with the –LKS option used in a clock and lock configuration will
not accurately measure frequency if the programmed voltage of the auxiliary unit (–LKS) is less than
30 Vrms (AC or AC+DC mode).
It is recommended to set the auxiliary unit’s (–LKS) programmed frequency to the same frequency as
the master (-LKM) unit. This does not affect the actual output frequency of the auxiliary unit as it is
controlled by the –LKM master unit.
3.10 Remote Control Interfaces
Setup and connection information on setting up remote control using either GPIB, USB, RS232 or
LAN interfaces is provided in the iX Compact Series Programming Manual P/N 6005-961. This manual
is distributed on the same CD ROM (P/N CIC496) as this user manual. It can also be downloaded
from the AMETEK Programmable Power website (
www.programmablepower.com ) .
Connector pin out information is provided in sections 3.7.6, 3.7.7, 3.7.8 and 3.7.9 of this manual.
Note: Use of the USB port to control more than one power source from a single PC is not
recommended, as communication may not be reliable. Use GPIB interface for multiple
power source control.