簡介
MCA-8000D
- 相容傳統的模擬脈衝成型
- MCA 和 MCS 模式
- 高速 ADC（100MHz，16bit）, 數位脈衝高度測量，8K資料通道
- 最小的脈衝時間 500ns
- 轉換時間 10ns
- 浮動線性
- 微分非線性<±0.6%
- 積分非線性<±0.02%
- 兩種峰值檢測模式：閾值後的第一個峰值（核光譜學） 或閾值後
- 的絕對峰值（潔淨室的粒子計數器校準）
- 符合與反符合的兩個TTL 邏輯通道
- 支援USB，RS-232，乙太網通訊
- 尺寸：5 x 2.8 x 0.8 in / 125 x 71 x 20 mm
- 重量：<165g
- USB 供電
- 支援ROI，能量刻度，峰值資訊，MCA 配置，免費採集軟體
- 提供免費軟體開發包（SDK），包括完整協議和範例代碼
- 太空和懸浮粒子探測應用的可選 PA工具包
Amptek 的 MCA8000D 是最先進、小尺寸、高性能的數位多道分析器（MCA）。它替代了 MCA8000A，具有 MCA8000A 同樣的功能，但是減少了死時間，更方便的介面（USB，RS-232，乙太網），更高的資料傳輸率。因為它不執行數位脈衝成型，所以它能夠相容類比脈衝成型系統。
高速 ADC（100MHz 16bit ADC）和複雜的數位邏輯使得其 性能更好。MCA8000D 數位化輸入信號（類比成型放大器的輸出），測量脈衝高度，獲得脈衝高度譜圖。10ns 轉換時間的高速ADC， 減少了死時間，增加了輸送量。數位電路結果更精確，更穩定。
MCA8000D 包含三個介面，USB（USB2.0 全速），RS-232（高至 115kB）,乙太網（10base-T）。它和 Amptek 數位訊號處理器
（DP5,PX5,X-123）使用同樣的 DPPMCA 軟體。MCA8000D 可通過 USB 供電或使用外部AC/DC 電源。
- 相容傳統的模擬脈衝成型
- MCA 和 MCS 模式
- 高速 ADC（100MHz，16bit）, 數位脈衝高度測量，8K資料通道
- 最小的脈衝時間 500ns
- 轉換時間 10ns
- 浮動線性
- 微分非線性<±0.6%
- 積分非線性<±0.02%
- 兩種峰值檢測模式：閾值後的第一個峰值（核光譜學） 或閾值後
- 的絕對峰值（潔淨室的粒子計數器校準）
- 符合與反符合的兩個TTL 邏輯通道
- 支援USB，RS-232，乙太網通訊
- 尺寸：5 x 2.8 x 0.8 in / 125 x 71 x 20 mm
- 重量：<165g
- USB 供電
- 支援ROI，能量刻度，峰值資訊，MCA 配置，免費採集軟體
- 提供免費軟體開發包（SDK），包括完整協議和範例代碼
- 太空和懸浮粒子探測應用的可選 PA工具包
| 性能特性 | ||
| 脈衝高度數位轉換器 | 帶數位脈衝高度測量的高速 100MHz，16bit ADC 輸入範圍 0 到 1V，或 0 到 10V（軟體可選） 通道數可選 256,512,1K，2K，4K，8K |
|
| 脈衝處理時間 | 滿足規格的脈衝峰化時間≥500ns | |
| 峰值檢測模式 | 閾值後的第一個峰 | 核儀器 MCAs 標準 |
| 閾值上的絕對峰值 | 典型的使用在懸浮粒子分析器中，用於環境空氣 監測系統和氣溶膠研究 | |
| 採集模式 | MCA 和 MCS（多通道縮放）低至 10ms/channel | |
| 微分非線性 | ＜±0.6% 從 15mV 到滿刻度 | |
| 積分非線性 | ＜±0.02% 超過滿刻度 | |
| 增益穩定性 | 增益±10ppm/℃；零點漂移±10ppm/℃（典型） | |
| 低水準甄別 器 | 軟體選擇閾值，以每一個通道增加增量 | |
| 每個通道的 計數 | 最大=16.7 x 106 計數（3 位） | |
| 真實時間和活時間 | 資料獲取的真實時間和活時間預置在 1 秒內。最大的預設時間是 16777215（224-1）秒。可以通過 Gate1 和 Gate2 對輸入信號控制獲得更短或者非整數的採集時間。 真實時間和活時間：4294967.29s（精度 0.01s）； 999,999.999s(精度 0.001s) 採集時間：99,999,999.9s(精度 0.1s) 預設計數：通道或 ROI 中 4,294,967,295（232- 1） |
|
| 介面 | RS232:115k 串列傳輸速率 USB:標準 2.0 全速（12Mbps）乙太網：標準 10base-T |
|
| 工作溫度 | -20 °C to +60 °C | |
| 外部控制和指示 | ||
| 狀態燈 | 紅燈穩定：電源開啟，無數據 紅燈閃爍：資料獲取模式 |
|
| 電源 | ||
| 工作功率 | 2W | |
| 電源 | 電源：+5V，0.4A 輸入範圍：+4V 到+5.5V（典型 0.5 到 0.4A） 供電：USB 供電或 AC/DC 適配器 |
|
| 連接器 | ||
| 輸入 |
模擬輸入接收成型時間≥200ns 或峰化時間≥500ns 的正單極性或雙極性高斯脈衝。 |
|
| Gates |
MCA-8000D 有兩個邏輯門。GATE1 通常用於與外部硬體同步採集。GATE2 通常用於堆積判棄。每個 GATE 都可以設置為 ACTIVE HIGH, ACTIVE LOW, 或不使能。在檢測輸入模擬脈衝的峰值時，對每個門輸入的活動狀態進行評估。 |
|
|
介面(I/O) |
USB:標準 mini-B 介面 USB |
|
| 物理特性 | ||
| 尺寸 | 5 x 2.8 x 0.8 in (125 x 71 x 20 mm) | |
| 重量 | ＜165 g | |
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 sameDPPMCA software package as Amptek’s digital signal processors, including the PX5, and X-123. The MCA-8000D can be powered over USB or with an external AC/DC power supply.
Compromising nothing in performance, the MCA-8000D is a low power, light weight instrument which is exceptionally versatile and easy to use.
Features
- Compatible with traditional analog pulse shaping
- MCA and MCS modes
- High speed ADC (100 MHz, 16 bit) with digital pulse height measurement
- 8k data channels
- Minimum pulse peaking time 500 ns (200 ns shaping)
- Conversion time 10 ns
- Sliding-scale linearization
- Differential nonlinearity <±0.6%
- Integral nonlinearity <±0.02%
- Two peak detection modes
- first peak after the threshold (nuclear spectroscopy)
- absolute peak after the threshold (particle counter calibration in clean rooms)
- Two TTL compatible gates for coincidence and anticoincidence
- USB, RS-232, and Ethernet communication interfaces
- Dimensions: 5 x 2.8 x 0.8 in / 125 x 71 x 20 mm
- Weight: <165 g
- Free Display and Acquisition software. Supports ROI, energy calibration, peak information, MCA configuration, and file management
- Free Software Development Kit (SDK). Complete protocol and example code to be used in custom software applications
- Optional PA Package for airborne and suspended particle detection applications
General Characteristics
| 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. |
Power
| 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) |
Connections
| 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. |
Mechanicals
| Weight | <165 g |
| Dimensions | 5 x 2.8 x 0.8 in (125 x 71 x 20 mm). |