Controller Models; Scu Description - Pacific UPC-32 Operation Manual

SECTION 1
1.3.1 UPC DESCRIPTION (cont)
The Programmable Output Impedance option (ProgZo) provides the ability to compensate for dynamic
losses in the output circuit by effectively controlling the output impedance of the power source and
responding in real time to changes in the output current. This feature is also known as Current
Compensation.
The UPC may be used in Local (front panel) or Remote (GPIB or RS-232 SERIAL) control. The GPIB
interface is IEEE-488.1, IEEE-488.2 and SCPI compatible. An RS-232 serial port interface is available
as an alternative to the IEEE-488 REMOTE interface and is IEEE-488.2 and SCPI command format
compatible.
Metered voltage and current waveform data (digitized waveforms) can be retrieved via the REMOTE
interface.

1.3.2 CONTROLLER MODELS

The term 'UPC' is derived from Universal Programmable Controller.
The UPC-32 is a 3Φ signal generator designed to plug in to any PACIFIC AMX/ASX Series chassis
which is 1Φ / 2Φ / 3Φ capable.
The UPC-12 is identical in characteristics to the UPC-32, except that it produces only one output signal.
It is designed to plug in to any single-phase-only PACIFIC AMX or ASX model power source.

1.3.3 SCU DESCRIPTION

The System Control Unit is a 19 inch wide, 5.25 inch high, 7 inch deep rack mounted box with a power
supply and connector interfaces, to support a UPC. This allows the UPC to be remotely located from the
power source.
The SCU provides a suitable housing for the controller for applications requiring a controller remotely
located from the power source. The complete designation for a "stand-alone" controller housing a UPC-
32 is SCU/UPC-32. Such a unit can drive some of the larger PACIFIC AMX or ASX power sources
through their rear panel interface. A typical usage might be to locate the power source at the base of an
instrument rack, with the controller installed in an upper slot at a more convenient eye level or even in a
completely different location.
GENERAL
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