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C
he entire controller front panel assembly (P/N
d from the main chassis if needed.
5.2 Am
power factor corrected bias supply PFC module (P/N 6005-704-1). The PFC assembly receives A
input power through an AC input transformer which provides full isolation from the line and also
accommodates 115V L-N or 230V L-N ac input selectable through a voltage selection switch on the
rear panel.
The front of the unit houses the digital controller and waveform generator (P/N 6005-703-1) as well as
the keyboard display assembly (P/N 6005-703-2). T
6005-403-1) can be remove
plifier Assembly
The first Amplifier Assembly (P/N 6005-400-1) is located on the right hand side of the chassis. For
1501i/iX models, a second amplifier assembly is installed in the center of the chassis. Both amplifier
assemblies of a 1501i/iX model are identical and their positions can be swapped at will although there
is no reason to do so.
The power m
odule contains two independent direct-coupled half-bridge amplifiers. The half bridges
to 150 vac) for two-phase operation but this
51i/iX and 1501i/iX models where both half bridges are used for one
phase operation only. Each half bridge is rated for 375 VA. One output is taken from OUTPUT LEFT
In LO RANGE the OUTPUT LEFT and RIGHT lines are tied together and drive the load with respect to
.
r
5.3 PFC Assembly
may be operated independently (in LO RANGE only, 0
capability is not used in the 7
to HV COM OUT and the other output is taken from OUTPUT RIGHT to HV COM OUT.
The half bridges may be operated together for a total of 750 VA. The LEFT amplifier will be the
master amplifier and it will drive the RIGHT amplifier.
HV COM OUT.
In HI RANGE (0 to 300 vac) the OUTPUT LEFT and RIGHT lines are separated and the output is
taken from OUTPUT LEFT with respect to OUTPUT RIGHT. HV COM OUT is not used in HI RANGE
For 1501i/iX models, one additional module is paralleled with the master module to increase amplifie
capability to 1500 VA. The additional module acts as an auxiliary to the first, master, module.
The PFC Assembly (P/N 6005-704-1) is located on the left hand front side of the chassis. AC power is
supplied through an input transformer. The PFC module generates a dual regulated DC bus that
provided power to one or two amplifier modules.
5.4 EMI Filter Assembly
The EMI Filter Assembly (P/N 6005-706-1) is located in the rear left corner of the chassis. It filters the
AC input line and distributes AC power to the input transformer and the auxiliary bias DC supply.
California Instruments 90
User Manual Compact i/iX Series
5.5 Auxiliary bias DC Supply
An auxiliary bias DC Supply (P/N 250808) is loc ted in the rear of the chassis below the
Range/Relay/Interface assembly. Low-level DC
5.6 Range/Relay/Interface A
a
voltage is distributed to the PFC assembly.
ssembly
The Range/Relay/Interface A the back of the chassis and
contains the required range and output relays as well as all analog and digital interfaces to the
outside.
,
GPIB, LAN, AUX I/O)
5.7 Fron
ssembly (P/N 6005-705-1) is located in
An isolated SELV DC supply is used to provide power to the analog and digital interface circuits (USB
.
t Panel Assembly
The Front Panel Assembly (P/N 6005-403-1) is lo
consists of the front panel with on/off switch, a CPU board and a keyboard/display board. The
controller contains the main oscillator, which generates the sine wave signal setting the frequency,
amplitude and current limit level. It also senses the output voltage to provide closed loop control of
the output. The controller also handles all user interface and remote control related tasks. The function
of each of the two boards that make up the controller assembly is described in the following
paragraphs.
5.7.1 Programmable Controller
cated on the front panel. The controller assembly
This board assembly (P/N 6005- for the CPU (DSP), generating the
waveform signal to the power am and data memory. In addition, this
board contains the circuits for all ck circuit required to support the
clock and lock mode option is als if this option is installed.
5.7.2 Keyboard / Display Board
703-1) consists of the components
plifier and all program, waveform
measurements. The clock and lo
o located on this board assembly
The keyboard/display assembly (P/N 6005-703-2) is mounted between the CPU board and the front
panel. If the power source is used over one of the remote control interfaces, the keyboard function
can be locked out by asserting the REMOTE state. See the i/iX Series Programming Manual (P/N
details.
s
6005-961) for
　
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