100W X-Ray Generator

The uXHP Series is the result of Spellman’s exceptional high voltage packaging and surface mount fabrication techniques coupled with proprietary encapsulation technology producing this ultra-compact X-Ray generator module. The uXHP powers grounded cathode X-Ray tubes from a variety of well-known manufacturers, featuring a 0 to 50kV/65kV/80kV high voltage output @ 5mA limited to 100W. The uXHP uses closed loop filament control circuitry providing highly regulated beam current. The low noise dc filament supply operates between 0.3 and 3.5A. Offering tight regulation, high stability and low ripple, the uXHP provides users local and remote analog control to set beam voltage, emission current and filament current limit. USB, RS-232 and Ethernet interface is standard.

TYPICAL APPLICATIONS

Powering grounded cathode X-Ray tubes from Varex, Kevex, Oxford, RTW, Superior and Trufocus.

uX and uXHP Graphical User Interface Demo Video:

Specifications

^{(Ref. 128110-001 REV. K)}

Specifications

Input:

+24Vdc ±1V; 7.75A maximum

Efficiency:

75%, typical

Output:

See model selection table on page 2

Voltage Control:

Local: Internal multi-turn potentiometer to set voltage
from 0 to full output voltage.

Remote: 0 to 10Vdc = 0 to 100% rated output voltage.
Accuracy: ±1%. ZIN = 10Mohm.

Emission Control:

Local: Internal multi-turn potentiometer to set voltage
from 0 to full output voltage.

Remote: 0 to 10Vdc = 0 to 100% rated output voltage.
Accuracy: ±1%. ZIN = 10Mohm.

Emission Control:

Local: Internal potentiometer to set beam current
from 0 to full output current.

Remote: 0 to 10Vdc = 0 to 100% rated output current.
Accuracy: ±1%. ZIN = 10Mohm. Filament limit and
filament preheat control capability is also provided.

Voltage and Current Monitors:

0 to 10Vdc = 0 to 100% rated output
Accuracy: ±1%. Z_OUT = 1kohm

Redundant Voltage Monitor:

A redundant high voltage feedback divider where
0 to 10Vdc = 0 to 100% rated output is monitored via firmware.
The analog monitor signal can be provided by special order.

Temperature Coefficient:

0.01% per °C, voltage and current.

Stability:

0.05% per 8 hours after 1/2 hour warm-up.

Digital Interface:

RS-232, Ethernet and USB is standard

DC Filament Supply:

Ground isolated filament power supply allows actual tube
current feedback signal for monitoring accurate low X-Ray
tube current performance.

Current: 0-3.5A, adjustable limit
Voltage: 5.0V, maximum compliance 

Environmental:

Operational: 0° C to +50° C
Storage: -40° C to +85° C
Humidity: 0% to 90%, non-condensing

Dimensions:

50/65kV Unit: 7.00”H x 3.07”W x 9.00”D
(177.80mm x 78.00mm x 228.60mm)

80kV Unit: 7.00”H x 3.07”W x 10.50”D
(177.80mm x 78.00mm x 266.70mm)

Weight:

50/65kV Unit: 8.5 lbs. (3.85kg)
80kV Unit: 10.0 lbs. (4.53kg)

Cooling:

User provided forced air cooling is required

Regulatory Approvals:

Compliant to EEC EMC Directive. Compliant to EEC Low Voltage Directive. UL/CUL recognized, File E227588. RoHS Compliant.

uXHP MODEL SELECTION TABLE

CONTROL POWER INPUT CONNECTOR

FILAMENT CONNECTOR

Note: The filament return wire cannot be grounded as this would short circuit
the tube return current monitoring to the uXHP. If grounding of the filament is
required, please consult the factory.

ANALOG INTERFACE CONNECTOR MALE 15 PIN MINI “D”

*Denotes 10 turn potentiometer accessable through holes in cover

USB DIGITAL INTERFACE— 4 PIN USB “B” CONNECTOR

HIGH VOLTAGE OUTPUT CONNECTOR

Spellman drywell type detachable connector.

50/65kV:

A one meter (39.4”) long polyethylene mating hig voltage cable with banana plug termination is provided.

80kV:

A one meter (39.4”) long polyethylene mating high voltage cable with corona ball termination is provided.

HV Cable Options:

5302:

(50kV unit only)
A one meter (39.4”) long Mammoflex mating high voltage
cable is provided, SHV p/n 201946-007

2001:

(50kV with XCC option and 65kV units only)
A one meter (39.4”) long Mammoflex mating high voltage cable
is provided, compatible with the XCC Option SHV p/n 201946-002

HIGH VOLTAGE POWER INPUT CONNECTOR 2 PIN PHOENIX CONTACT

ETHERNET DIGITAL INTERFACE— 8 PIN RJ45 CONNECTOR

RS-232 DIGITAL INTERFACE— 9 PIN FEMALE D CONNECTOR

Tables & Diagrams

Digital Interface

The uXHP features a standard USB, RS-232 and Ethernet digital interface. Utilizing these standard digital interfaces can dramatically simplify power supply interfacing requirements saving the user both time and money, while enhancing functionality and overall capabiity. Spellman provides a GUI with the uXHP that allows the customer to both customize operational features of the uXHP while also providing basic power supply operational features. Details of the uXHP’s digital interface capability are described in detail in the uXHP manual.

Closeup showing digital interface connectors

Varex VF-80J X-Ray Tube

The uXHP was specifically designed in cooperation with Varex to power their new VF-80J X-Ray tube. This joint effort resulted in the creation of both the VF-80J X-Ray tube and the uXHP X-Ray generator. The Varex VF-80J tube is uniquely rated to run at up to 80kV @ 100 watts, 4mA maximum. The uXHP was explicitly designed to operate at up to 80kV and provide 100 watts down to 25kV, so customers could make full use of the capabilities of the VF-80J X-Ray tube. Varex and Spellman, working together to push the boundaries of X-Ray technology.

Frequently Asked Questions

Application Notes AN-12 – The Benefit of Using a Current Source to Power X-Ray Tube Filament Circuits
Application Notes AN-01 – Fundamentals of X-Ray Generator – X-Ray Tube Optimization