Mirion Technologies Lynx II DSA - Page 112

Chapter 5 Web-Based Operations
102 Lynx II DSA User's Manual - 7096089
The Rear Panel’s HV indicator will indicate active (green) when the high voltage power
supply is switched to On, and inactive when the high voltage power supply has been
switched to Off and the output voltage has decayed to approximately 10% of full scale.
The HV field of the front panel LCD display will also show the On/Off status. If a fault
condition develops, the indicator will indicate red. The HV field on the front panel LCD
display will also show Fault.
The On function must be manually re-selected to reactivate High Voltage output after the
Fault condition has been addressed.
WARNING:
When turned Off, as the voltage output approaches zero, its
decay becomes exponential. This means that a residual voltage
may still be present at the SHV connector after the high voltage
power supply has been switched Off. To avoid shock, use
extreme care when connecting or disconnecting SHV cables from
the rear panel.
Range (V)
The HVPS Range selects the respective HVPS hardware within the Lynx II. Range can be
set to 200 volts, 1500 volts, or 5000 volts. Setting the Range value will also set the entry
limit for the voltage value. The polarity of the output voltage is determined by the Polarity
setting.
The Range is typically the first setting to be selected; it can only be changed while the
high voltage power supply is off.
Please refer to the “High Voltage Power Supply” connectors on page 63 for information
on the appropriate SHV output connector.
Limit (V)
The Voltage limit control establishes the HVPS’s maximum output voltage within the
selected range. The Voltage Limit setting must be established before the Voltage control is
adjusted.
Polarity
Sets the polarity of the output voltage as the selected range’s SHV connector located on
the rear panel. Please refer to the “High Voltage Power Supply” connectors on page 63 for
information on the appropriate SHV output connector.
Polarity can only be changed while the high voltage power supply is off.