XPIN -BT X-ray Detector Operation Manual Detectors

XPIN -BT X-ray Detector Operation Manual Detectors

XPIN

®

-BT X-Ray Detector

Operation Manual

Detector Setup

Mechanical

The XPIN-BT detector is equipped with mounting holes so it can be mounted to a fixture.

Mounting the detector to a metal fixture will help keep the detector cool in ambient temperatures greater than 40°C. It may be necessary to use a fan to cool the detector if the heat sinking is not adequate. Mechanical drawings for mounting are included in the Appendix.

An optional adapter plate is available for detector use in a customer’s existing mounting block. To attach the adapter to the detector, slide the adapter under the connectors in the back of the detector, align the adapter’s two mounting screw holes with those on the detector and then secure the adapter with the two mounting screws (see Figure 5).

Figure 5 Adapter Plate Attached to Detector

DET-MAN-MED00014, Rev C Page 5

Subject to technical change without notice

XPIN

®

-BT X-Ray Detector

Operation Manual

Cable Connections of XPIN-BT Detector

Refer to Figure 6

Connect one end of the power cable to the power connector of the detector, and the other end to the detector power supply.

Connect one end of the BNC cable to the signal connector of the detector, and the other end to digital pulse processor or an analog pulse shaping amplifier.

Ensure there are no ground loops between the detector, x-ray source, power supply, or other supporting electronics which could result in unwanted noise in the system.

Figure 6 Power and Signal Cable Attached

Electrical

Four voltages are required to operate the XPIN detector:

(See Appendix, Preamp Connector Pinouts)

-9V ( ± 5%) @35mA for preamplifier power (Pin 3)

+9V (

±

5%) @ 55mA for preamplifier power (Pin 4)

+170VDC for PIN Diode bias (Pin 2)

TE Cooler voltage (Pin 6,5) (See Appendix, Temperature Control Operation)

DET-MAN-MED00014, Rev C Page 6

Subject to technical change without notice

XPIN

®

-BT X-Ray Detector

Operation Manual

Detector Temperature Control Operation

There are two methods of operation for controlling the detectors internal temperature. The first method is using the internal temperature controller built into the preamplifier.

This internal temperature controller is the standard configuration

. To operate the internal temperature controller 5V @ 1A is applied to the TE cooler power pin 6. Pin 5 is the return ground. When the preamplifier is configured with internal temperature controller, Pin 1 is an open collector output that can be used to determine if the detector is at temperature. When the detector is at temperature, Pin 1 is shorted to ground. When the detector is not at temperature this Pin 1 is floating.

If operating the detector with an external temperature controller, the preamplifier needs to be reconfigured. This method of temperature control is not standard. The voltage on Pin 1 becomes proportional to the temperature of the detector (see the Appendix for the Voltage to Temperature Chart).

Pin 6 is the control voltage which ranges from 0 to 3.5V at 0.56A max. Pin 5 remains the return ground for the TE cooler. Increasing the voltage on Pin 6 will cool the detector and decreasing the voltage will allow the detector to warm up.

DET-MAN-MED00014, Rev C Page 7

Subject to technical change without notice

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