簡介
MCA-8000D
Amptek 的 MCA-8000D 是一款先進、輕巧、高性能的數位多通道分析儀(MCA)。 它取代了 MCA-8000A,可提供相同的功能,但具有更少的死區時間、現代化的通信介面(USB、RS-232 和乙太網路)以及更高的數據傳輸速率。 由於它不進行數位脈衝整形,因此它與類比脈衝整形系統相容。
高速 ADC(100 MHz 16 bit ADC)和精密的數位邏輯提供了卓越的性能。 MCA-8000D 將輸入信號(類比整形放大器的輸出)數位化,以測量脈衝高度並獲得脈衝高度頻譜。 具有 10 ns 轉換時間的高速 ADC 減少了死區時間,從而提高了傳遞量。 數位電路提供了高精度和穩定性。
Amptek 的 MCA-8000D 是一款先進、輕巧、高性能的數位多通道分析儀(MCA)。 它取代了 MCA-8000A,可提供相同的功能,但具有更少的死區時間、現代化的通信介面(USB、RS-232 和乙太網路)以及更高的數據傳輸速率。 由於它不進行數位脈衝整形,因此它與類比脈衝整形系統相容。
高速 ADC(100 MHz 16 bit ADC)和精密的數位邏輯提供了卓越的性能。 MCA-8000D 將輸入信號(類比整形放大器的輸出)數位化,以測量脈衝高度並獲得脈衝高度頻譜。 具有 10 ns 轉換時間的高速 ADC 減少了死區時間,從而提高了傳遞量。 數位電路提供了高精度和穩定性。
MCA-8000D 包括三個介面:USB(全速 USB 2.0)、RS-232(高達 115 kB)和乙太網路(10base-T)。 它使用與 Amptek DP5、PX5 和 X-123 等數位信號處理器相同的 DPPMCA 軟體版本。 MCA-8000D 可以通過 USB 或外部交流/直流電源供電。
MCA-8000D 是一款高性能、低功耗的輕巧儀器,用途廣泛且使用方便。
特點
完整的脈衝高度分析系統
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脈衝高度數位轉換器 |
具有數位脈衝高度測量的高速 100 MHz、14 bit ADC。 |
輸入範圍 |
0 至 1 V 或 0 至 10 V(軟體可選)(超出範圍的事件將被刪除)。 |
通道數 |
256、512、1k、2k、4k 或 8k(軟體可選)。 |
最小輸入上升時間 |
≥500 ns,滿足技術規格要求。 |
每個脈衝的死區時間 |
10 ns 加上脈衝整形時間。 |
峰值檢測模式 |
獨立峰值(V1):核儀器 MCA 的標準配置。 |
擷取模式 |
MCA 和 MCS(多通道定標),最低可達 10 毫秒/通道。 |
微分非線性 |
從 5 mV 到滿刻度 <±0.6%。 |
積分非線性 |
在滿刻度上 <0.02%。 |
增益穩定性 |
±10 ppm/°C(典型值)。 |
零漂移 |
±10 ppm/°C(典型值)。 |
低電平鑑別器 |
軟體可選閾值,以一個通道為增量。 |
每個通道的計數 |
最大值 = 16.7 x 106 個計數(3位元組)。 |
真實和即時計時器 |
數據擷取真實或即時預設。 最大預設時間 4,294,967.29 s(10 mS 精度)或 999,999.999 s(1 mS 精度)。 通過使用閘 1 或閘 2 對輸入信號進行閘控,可以縮短累積時間。 |
真實和即時時間 |
4,294,967.295 s(0.001 s 精度)。 |
擷取時間 |
1,677,721.599 s(0.001 s 精度)。 |
預設計數 |
4,294,967,295(2³²-1)(在通道或 ROI 中)。 |
介面 |
RS232:115.2 或 57.6 Kbaud。 |
工作溫度 |
-20°C 至 +60°C。 |
|
TUV 認證 |
外部控制和指示燈
狀態指示燈 |
紅燈常亮:電源打開,無數據擷取。 |
電源
工作功率 |
2 W |
輸入電源 |
0.4 A 時為 +5 V |
輸入電源範圍 |
+4 V 至 +5.5 V(0.5 至 0.4 A 典型值) |
輸入電源 |
USB 電源或交流/直流電源供應器(隨附) |
連接
輸入 |
類比輸入接受整形時間常數為 ≥200 ns 或峰值時間為 ≥500 ns 的正單極或雙極半高斯型脈衝。 |
閘 |
MCA-8000D 有兩個邏輯閘:閘 1 通常用於將擷取與外部硬體同步,而閘 2 通常用於堆積刪除。 |
介面(I/O) |
USB:標準 USB Mini-B 插孔。 |
機械
重量 |
<165 g |
尺寸 |
5 x 2.8 x 0.8 英寸(125 x 71 x 20 mm)。 |
Amptek’s MCA-8000D is a state-of-the-art, compact, high performance, digital MultiChannel Analyzer (MCA). It replaces the MCA-8000A, providing the same functionality with reduced dead time, modern communications interfaces (USB, RS-232, and Ethernet), and much higher data transfer rates. Because it does not implement digital pulse shaping, it is compatible with analog pulse shaping systems.
Superior performance is obtained from a high speed ADC (a 100 MHz 16 bit ADC) and sophisticated digital logic. The MCA-8000D digitizes the input signal (the output of an analog shaping amplifier) to measure the pulse height and obtain the pulse height spectrum. The high speed ADC, with a 10 ns conversion time, reduces dead time thus increasing throughput. The digital circuitry yields high accuracy and stability.
The MCA-8000D includes three interfaces, USB (USB 2.0 full speed), RS-232 (up to 115 kB), and Ethernet (10base-T). It uses the same DPPMCA software package as Amptek’s digital signal processors, including the DP5, PX5, and X-123. The MCA-8000D can be powered over USB or with an external AC/DC power supply.
Features
Optional PA Package for airborne and suspended particle detection applications
Complete Pulse Height Analysis System
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Pulse-Height Digitizer | High speed 100 MHz, 14 bit ADC with digital pulse height measurement. |
Input Ranges | 0 to 1 V or 0 to 10 V (software selectable) (over range events are discarded) |
Number of Channels | 256, 512, 1k, 2k, 4k, or 8k (software selectable) |
Minimum Input Risetime | ≥500 ns to meet specifications. |
Dead Time Per Pulse | 10 ns plus pulse shaping time |
Peak Detection Modes (See Figure 6) | Separate Peaks (V1): Standard to nuclear instrumentation MCAs. Absolute Peak Above Threshold (V2): Typically used in airborne particle sizing analyzers, in environmental air monitoring systems and in aerosol research. |
Acquisition Modes | MCA and MCS (multichannel scaling) down to 10 ms/channel. |
Differential Nonlinearity | <±0.6% from 5 mV to full scale. |
Integral Nonlinearity | <±0.02% over full scale. |
Gain Stability | ±10 ppm/°C (typical). |
Zero Drift | ±10 ppm/°C (typical) |
Low Level Discriminator | Software selectable threshold, in increments of one channel. |
Counts per Channel | Maximum = 16.7 x 106 counts (3 bytes). |
Real and Live Timers | Data acquisition real or live time preset. Maximum preset time 4,294,967.29 seconds (10 mS precision), or 999,999.999 seconds (1 mS precision). Shorter accumulation times can be achieved by gating the input signal with Gate 1 or Gate 2. : ; 999,999.999 s (0.001 s precision). : 99,999,999.9 s (0.1 s precision) : 4,294,967,295 (232-1) in channel or ROI |
Real and Live Time | 4,294,967.295 s (0.001 s precision) |
Acquisition Time | 1,677,721.599 s (0.001 s precision) |
Preset Counts | 4,294,967,295 (2³²-1) in channel or ROI |
Interface | RS232: 115.2 or 57.6 Kbaud USB: Standard 2.0 full speed (12 Mbps) Ethernet: Standard 10base-T (UDP) |
Operating Temperature | -20 °C to +60 °C. |
TUV Certification Certificate #: CU 72131640 01 Tested to: UL 61010-1:2012 CAN/CSA-C22.2 NO. 61010-1-12 |
Status Light | Steady red light: power is ON and no data acquisition in progress. Flashing red light: data acquisition in progress. (Same as amber light on Ethernet connector.) |
Operating Power | 2 W |
Input Power | +5 V at 0.4 A |
Input Power Range | +4 V to +5.5 V (0.5 to 0.4 A typical) |
Input Power Sources | USB power or AC/DC adapter (supplied) |
Input | The analog input accepts positive unipolar or bipolar semigaussian type pulses of shaping time constants ≥200 ns or peaking time ≥500 ns. The dynamic range is 0 to +1 V or 0 to +10 V, software selectable. Minimum pulse height is 5 mV. Input impedance is 1 kΩ (MCA-8000D) or 100 kΩ (MCA-8000D Option PA). The input has overload protection up to ±20 V. The DC level of the input signal must be zero. |
Gates | The MCA-8000D has two logic gates: GATE1 is generally used to synchronize acquisition with external hardware while GATE2 is generally used for pileup rejection. Each gate can be commanded to ACTIVE HIGH, ACTIVE LOW, or DISABLED. When set to ACTIVE HIGH, if the input is high, then pulse heights are recorded and the live time clock runs. The active state of each GATE input is evaluated at the time of the input analog pulse is detected. |
Interface (I/O) | USB: Standard USB Mini-B jack. Ethernet: Standard Ethernet jack. RS232: Standard 2.5 mm stereo audio jack. Power plug mates with 3.5 mm x 1.3 mm x 9.5 mm female barrel, center positive, plug connector. |