The PA-PSHTR02 Heater Power Source is a microprocessor based Traveling Wave Tube (TWT) heater filament power supply with a large and highly visible LCD display.

Output Range

• Voltage 50mV to 20V
• Current 50mA to 10A
• 0.1% accuracy, 0.02% linearity

Control Interface

• Mode and the output level controlled through the front panel controls or the RS422 serial communications port.
• Multiple supplies can be connected to the same RS422 line.
• Supports on-site software upgrades.

Converter Operation

• Converter provides both current and voltage regulation
• Precision AC power over a wide range of output impedances
• Current limited short circuit protection
• Programmable setpoint can also be limited by internal hardware adjustments
• The 60 Hertz output is synchronized to the AC line input
• Short circuit protected by high speed hardware loops
• Crowbar protected in the event of a prolonged fault condition

Isolation

• Floating output can be connected to 10kV external DC voltages
• Galvanic and optical isolation withstand high voltage transients associated with Traveling Wave Tube (TWT) applications

Measurement

• The output is metered by precision True RMS to DC converters with gain accuracy of 0.1% and linearity within 0.02%
• Four wire Kelvin connection for load point regulation
• Two wire mode option provided
• Full software controlled calibration support

Timer

• Filament on time displayed on the front panel.
• Resettable filament timer