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OL MODE Sets the current limit overload mode. The actual response of the
l re-engaged. In CC mode, the voltage
will be reduced until the current limit is no longer exceeded.
AC Source to a current limit fault is determined by this setting.
Available settings are CC for Constant Current mode or CV for
Constant Voltage mode. In CV mode, the AC source output will
trip off and stay off unti
California Instruments 59
User Manual Compact i/iX Series
4.2.5 CONTROL Menus
Figure 4-6: CONTROL Menus
Th CONTROL menu is sh 4
selecting the CONTROL entry using the D
The CONTROL menu is used to change s arameters. The following choices are
available in the CONTROL menus:
e own in Figure -6 and can be reached by selecting the Menu key,
OWN cursor key and then pressing the Enter key.
econdary output p
ENTRY DESCRIPTION
SENSE Selects internal te) voltage sense mode. If INT is
selected, the voltage is sensed at the output terminal block. If EXT is
r. If
load. For sense leads longer than 1
meter, twisted pairs should be used.
or external (remo
selected, the voltage is sensed at the external sense connecto
external sense is selected, care must be taken to connect the
external sense lines at the
SYNC Selects the external sync mode if available. Default is internal sync,
w
synchronized to an external sync signal depending on installed
options (-EXS option).
hich means a free running time base. The time base can be
CLOCK Selects
uses an
The ext
use as an auxiliary unit in a clock and lock system, this field must be
NT clock mode.
The same EXT setting is required to use the –RPF (remote
ing if
d.
internal or external clock source. The i/iX Series controller
open-air crystal time base with an accuracy of 100 ppm.
ernal clock mode is used to support the –LKS option. For
set to EXT. A unit with –LKS option can be used stand-alone if
needed by setting the I
programming frequency) analog input for frequency programm
the –RPF option is installe
INT Default, internal clock.
ake sure the
Clock and Lock BNC cables are connected to the
EXT Auxiliary unit (-LKS) driven by master (-LKM) clock
input.
Note: When selecting EXT mode, m
Master (-LKM) unit. If not, there will be no output on
the –LKS unit. See section 3.10 for connection
information.
MODE Power on clock mode. The following two modes can be selected.
California Instruments 60
User Manual Compact i/iX Series
ENTRY DESCRIPTION
STAN Power up in INT (internal) clock mode for standalone
operation. This is the only mode for models
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.
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.
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 10 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 (remote programming voltage). The RPV input
expects a 0-10 Vdc signal for 0 to full-scale voltage. The –RPV
option must be installed for this mode of operation.
# OUTPUTS Selects SINGLE or THREE phase mode of operation. The 751/1501
i/iX models operate only in single-phase mode so this field will
always show N/A (not applicable).
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