Table of Contents
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1
Introduction .......................................................................................................................................... 2
1.1
PC5 Description . ............................................................................................................................ 2
1.2
DP5 Family..................................................................................................................................... 3
1.3
Options and Variations ................................................................................................................. 3
2
Specifications ........................................................................................................................................ 4
3
Mechanical Interface ............................................................................................................................ 5
3.1
Dimensions . ................................................................................................................................... 5
3.2
Connectors .................................................................................................................................... 6
4
Electrical Interface ................................................................................................................................ 9
4.1
Power Interface . ............................................................................................................................ 9
4.2
Analog Input Interface .................................................................................................................. 9
5
PC5 Design ............................................................................................................................................ 9
5.1
PC5 Architecture ........................................................................................................................... 9
5.2
HV Bias Supply Discussion . .......................................................................................................... 10
5.3
Thermoelectric Cooler Discussion . .............................................................................................. 11
5.4
Preamp Signal Connections ........................................................................................................ 12
6
PC5 Application Advice ....................................................................................................................... 12
6.1
Using the PC5 without a DP5 ...................................................................................................... 12
+1 781 275-2242 Fax: +1 781 275-3470 www.amptek.com sales@amptek.com
Your
Products for
PC5 User Manual
Rev B0 - April, 2016
AMPTEK, Inc.
14 DeAngelo Drive, Bedford, MA 01730-2204 USA
Imagination
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Summary of Contents for Amptek PC5
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Page 1: Table Of Contents
Your Products for Imagination PC5 User Manual Rev B0 ‐ April, 2016 1 Introduction ............................ 2 1.1 PC5 Description .......................... 2 1.2 DP5 Family............................. 3 1.3 Options and Variations ......................... 3 2 Specifications ............................ 4 3 Mechanical Interface .......................... 5 3.1 Dimensions ............................ 5 3.2 Connectors ............................ 6 4 Electrical Interface .......................... 9 4.1 Power Interface .......................... 9 4.2 Analog Input Interface ........................ 9 5 PC5 Design ............................ 9 5.1 ... -
Page 2: Introduction
2. With a different processor, the PC5 uses potentiometers and fixed resistors to determine the configuration. It is not under software control and provides no readout. Power is supplied through the PC5’s 8 pin header or through a jack on the PC5. This is the “standalone” configuration. ... -
Page 3: Dp5 Family
Imagination DP5 Family Amptek has a family of products built around its core DP5 digital pulse processing technology, designed for pulse height spectroscopy. It was originally designed for the detection of ionizing radiation, principally X‐ray and gamma‐ray spectroscopy. A generic system, illustrated below, includes (a) a sensor, a.k.a. detector, (b) a charge sensitive preamplifier, (c) analog prefilter circuitry, (d) an ADC, (e) an FPGA which implements pulse shaping and multichannel analysis, (f) a communications interface, (g) ... -
Page 4: Specifications
Some detectors may have tighter temperature limits; even where they operate over a wide range, performance is usually a strong function of detector temperature. Warranty Period 1 Year Typical Device Lifetime 5 to 10 years, depending on use Storage and Shipping Long term storage: 10+ years in dry environment Typical Storage and Shipping: ‐40 °C to +85 °C, 10 to 90% humidity non‐condensing Compliance RoHS Compliant Power Nominal Input: @ +5 VDC: 400 mA (2 W) typical, at full cooling. Input Range: +4 V to +5.5 V (at 0.5 to 0.35 A typical) Initial transient: 2 A for <100 s Power Source: External supply or USB bus The PC5 supplies power to the preamplifiers. When used in conjunction with a DP5, as is typical, the pair together draw about 700 mA (3.5W) at full cooling. 4 ... -
Page 5: Mechanical Interface
Your Products for Imagination Mechanical Interface Dimensions Figure 3. Mechanical overall dimensions. Figure 4. Mechanical connector locations and dimensions. All dimensions in inches. 5 ... -
Page 6: Connectors
Your Products for Imagination Connectors Note that the PC5 build configuration dictates which of the following connectors are installed – never are they all installed. Power (J1) Power Jack on PC5: Hirose MQ172‐3PA(55) [obsoleted in 2016, replaced by MQ172‐3PA(30)]. Mating Plug: Hirose MQ172‐3SA‐CV(50) [obsoleted in 2016, replaced by MQ172‐3SA‐CV(30)] [The replacements are form/fit/function compatible.] Pin # Name 1 VIN (+5 V DC) 2 GND 3 Do Not Connect Power connector to XR100 (J2) Part #: Molex 22‐28‐8062 Mating: Molex C‐Grid Crimp Connector. Housing P/N 50‐57‐9006, terminal P/N 16‐02‐0119. Pin # ... - Page 7 Power and signal connector to PA210/PA230 (J5) Part #: Samtec ZF1‐10‐01‐T‐WT Pin # Name 1 GND 2 TC+. Provides power to the thermoelectric cooler (< 4 V) 3 +8.5 or +5 V. Supplies power to the preamp 4 ‐8.5 or ‐5 V. Supplies power to the preamp 5 Signal return. Tied to GND on PA210/PA230 6 Signal Out 7 Detector temperature. This is an input to the PC5 from the detector 8 GND 9 NC 10 HV Bias. From 0 to +/‐1500 V, depending on the detector. Signal connector to DP5 for PA210/PA230 (J7) Part #: TMM‐102‐01‐S‐D‐SM Mating: SMM‐102‐02‐S‐D‐LC Pin # Name 1 Signal Out 2 NC 3 Signal Return (ties to pin 5 of J5) 4 NC ...
- Page 8 Your Products for Imagination Photo of the top side of the PC5 Photos of the DP5 and PC5 showing connector locations. 8 ...
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Page 9: Electrical Interface
Logic and DACs Not Used -1500V to + 1500V HV Bias 4 x 2 header 0 to 3.6V Thermoelectric Cooler Supply Temperature Backplane Preamplifier Preamplifier Connector Connector 10 pin ribbon 1 x 6 header Figure 5. PC5 design 9 ... -
Page 10: Hv Bias Supply Discussion
The power dissipated will depend on many variables. The PC5, preamplifier, and detector typically draw a maximum of 1.5 W (300 mA at 5 V). The PC5 and DP5 together typically draw 3.5 W (700 mA at 5 V). Nominal switching frequencies are >1 MHz, except for the HV bias which switches at 50 kHz. The enable pin can be controlled from the DP5 or J4. The enable pin is pulled up to 3.3 V with 10 Kohm. In the absence of a DP5, this pullup will turn on the PC5 supplies, unless the enable pin is pulled down externally. The PC5 control logic is generally under control of the DP5 via I C. This enables the various supplies, determines the set point, and monitors the values which are reported back to the DP5. If no DP5 is used then potentiometers and resistors are installed to provide fixed control. HV Bias Supply Discussion A simplified schematic for the HV supply is shown in the schematic below for positive polarity. The output is divided by a factor of 500 into the error amplifier circuit. TP12 measures the HV set point ... -
Page 11: Thermoelectric Cooler Discussion
Therefore the set point must be set such that no matter what the ambient temperature reaches, the detector temperature stay constant. Example: If room temperature is 40 °C the temperature set point must be set such that this is regulated, so the coldest the detector can be set to is ‐45 °C. This means that even at 20 °C room temperature the detector will be at ‐45 °C, but it will be constant from 20 to 40 °C. The temperature sensor, inside the detector, is a 1N914. The forward voltage, at a fixed current, is a function of temperature and is used to regulate the detector temperature. A typical calibration curve can be found at www.amptek.com. Note that PC5s earlier than Rev D0 (early 2013) take the feedback from before the output filter, so that there will be some voltage drop across the 2.5Mfilterdepending on current. 11 ... -
Page 12: Preamp Signal Connections
Your Products for Imagination Preamp Signal Connections The schematic below illustrates how the preamp signal is brought to J7 for PA210/230 applications. Figure 8. Preamp signal connections PC5 Application Advice Using the PC5 without a DP5 The PC5 must be ordered with the correct configuration. It is not intended for the user to change configurations for different products. XR100 When using the PC5 with an XR100 box the following configuration is needed: Preamp power set to +/‐ 8.5 V (R16 = 0 Ohm/short, R18 = open). J2 connector used to connect power to XR100. VR1 and additional components installed for HV control (installed at the factory). VR3 and additional components installed for temperature control (installed at factory). XR100 Amp Out connected directly to user supplied signal processor. Input power is applied either to J1 with the AC adapter or to J4 from a power supply. PA‐210/PA‐230 When using the PC5 with a PA‐210 or PA‐230 the following configuration is needed: 12 ... - Page 13 Your Products for Imagination Preamp power set to +/‐ 5 V (R16 = open, R18 = 0 Ohm/short). VR1 and additional components installed for HV control (installed at the factory). VR3 and additional components installed for temperature control (installed at factory). J5 installed and connected to PA preamp with flex cable. J7 installed. Unlike the XR100 that has a separate signal out, the PA preamps send the signal through the power flex cable. As a result, the signal must be taken from the PC5 J7 connector and then connected to the user supplied signal processor. Input power is applied either to J1 with the AC adapter or to J4 from a power supply. 13 ...
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