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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.