AMETEK Lx Series II - Manual (Page 81)

User Manual Lx / Ls Series II
77
ENTRY DESCRIPTION
MODE Power on clock mode. The following two modes can be selected.
STAND Power up in INT (internal) clock mode for stand-
alone operation. This is the only mode for Lx/Ls unit
without the
–LKS option.
For units with the –LKM option installed, this field is
fixed to CLK/LOCK.
For units with the
–LKS option installed, this field can
be changed to CLK/LOCK for use as an auxiliary
unit in a clock and lock system or to STAND for use
as a stand alone unit.
CLK/LOCK Fixed on master (-LKM) unit configuration in a clock
and lock system. Power up with EXT (external) clock
mode on unit with
–LKS option. (See OPTION menu
section.).
Note that this field cannot be changed if the
–LKM
option is installed.
The frequency resolution below 81.9 Hz in MAST
clock and lock mode is reduced to 0.1 Hz from the
normal 0.01 Hz.
If the
–HF option is installed, frequency resolution on
the –LKM unit is fixed at 1 Hz.
ALC STATE Sets the Auto Level Control (ALC) mode. This mode uses the
internal measurement system to zero regulate the output. There are
three modes of operation:
OFF No measurement based output regulation.
REG Output regulation is enabled. AC source will continuously
regulate output but will not trip off output. (Note: This mode
requires firmware revision 0.98 or higher).
ON Output regulation is enabled and output will fault (trip off)
with Error 801 “Output Voltage fault” if regulation cannot be
maintained and the programmed output voltage is 10Vrms or
higher. No error is generated for settings below 10 volt.
In most situations, the ALC mode should be set to REG or ON for
optimal performance.
Note: The ALC mode only functions for programmed output voltages
above 5 Vrms.
VOLT REF Selects internal or external voltage programming. Select INT for
programming of voltage from the front panel or over the bus. Select
EXT to use the RPV. The RPV input expects a 0 to +10 Vdc signal
for 0 to full-scale AC output voltage.