American Magnetics 03300PS-430-601 High Stability Integrated Power Supply System - Manual (Page 46)

28 Rev. 5
Operation
Default Display : Voltage
Programmer display. The parameter displayed (field or current) is toggled
by pressing SHIFT followed by FIELD <> CURRENT . Thus, if field strength
is being displayed, pressing SHIFT followed by FIELD <> CURRENT will
cause the current to be displayed; conversely, if current is being displayed,
pressing SHIFT followed by FIELD <> CURRENT will cause the field
strength to be displayed. Operating current is always displayed in
amperes (A). Operating field strength may be displayed in kilogauss (kG)
or tesla (T) if a coil constant has been specified in the setup
1
. If field
strength is being displayed, the units (kG or T) in which it is displayed can
be toggled by pressing SHIFT followed by FIELD UNITS .
Note
Note that the displayed field strength is not directly measured, but
rather is calculated by multiplying the coil constant entered in the
setup menu by the measured current flow of the Model 430 power
supply system.
3.2.2 Voltage Display
The voltage display indicates either the voltage across the magnet (Vm) or
the power supply output voltage (Vs). This is always displayed in the lower
left corner of the display (see Figure 3-1), regardless of what else is being
displayed on the Model 430 Programmer display. The parameter displayed
(magnet voltage or power supply voltage) is toggled by pressing SHIFT
followed by Vs <> Vm . Vm indicates the voltage measured across the
terminals of the connected superconducting magnet. In order for the Model
430 Programmer to measure the magnet voltage, the magnet voltage taps
must be connected to the Model 430. Normally this is done through the
Magnet Station Cable provided by AMI (if the whole magnet system is
provided by AMI). Vs indicates the Model 430 Programmer-controlled
power supply output voltage.
Note
Note that the displayed power supply voltage (Vs) is not directly
measured, but rather is calculated based on power supply control
voltage being provided by the Model 430 Programmer and the power
supply input control voltage and output voltage values entered in
the setup menu.
1. Refer to section 3.10.2.2 on page 54.