Features

• Complete programmability within the Genie™ family
• Utilizes the CANBERRA Instrument Control Bus (ICB)
• Regulated up to ±6000 V dc, 300 ìA output
• Noise and ripple <3 mV peak to peak
• Overload and short circuit protected
• Overload, Inhibit and Polarity status indicators
• Inhibit and Overload latching circuits
• Ramped high voltage output with bar graph indication
• Secure computer operation without conflicting front panel controls

Description

The CANBERRA Model 9645 High Voltage Power Supply is a single-width NIM family member of the ICB line of programmable front end electronics and has been designed primarily for operation with semiconductor detectors. It is particularly well suited for use with high resolution detector systems. By design, the Model 9645 will accommodate all types of detectors requiring up to 6 kV bias and up to 300 ìA of current.

The Model 9645 accepts programming information over the 8-bit wide CANBERRA Instrument Control Bus (ICB). ICB NIMs connect to this bus via a host module such as the Model 556A Acquisition Interface Module (AIM) as part of a hierarchy of networked acquisition and control managed by a Genie family computing platform.

The Model 9645 allows the user to select from two outputs, one ranging from ±30 to ±6000 V dc and the other derived from the first but attenuated by a factor of 10, giving ±3 to ±600 V dc. A 20-segment bar graph displays the output voltage. In addition, this unit allows the user to select the output voltage polarity with an internal control.

The Model 9645 can withstand an overload or short circuit for an indefinite period of time. The unit can be programmed to either resume normal operation after removal of the fault or to require a programmed reset command.

An INHIBIT input is available for remote shutdown of the Model 9645. The unit can be programmed to either resume operation upon removal of the INHIBIT signal or to require a programmed reset command. The Model 9645's output rise time of 100 volts per seconds protects preamplifiers and detectors from excessive surge currents while changing.

Adjustments are made through the graphical user interface of the Genie software environments. Equivalent batch procedure commands are also available in the environments. All ICB NIM parameters are stored in the single data file structure of the Genie family, allowing verification of correct set up from one experiment to the next.

All ICB NIMs feature a characteristic READY LED to indicate operational status.