NectarCAM is a camera for the medium-sized telescopes of the Cherenkov Telescope Array (CTA), which covers the energy range of 100 GeV to 30 TeV. The camera is equipped with 265 focal plane modules (FPMs). Each FPM comprises 7 pixels, each consisting of a photo-multiplier tube, a preamplifier, an independently controlled power supply, and a common control system. We developed a dedicated test bench to validate and qualify the industrial FPM production and to measure the performance of each FPM in a dark room before its integration in the camera. We report the measured performance of 61 FPM prototypes obtained with our experimental setup. We demonstrate that the gains of the photo multiplier tubes are stable and that pulse widths, transit time spreads, afterpulse rates and charge resolutions are within the specifications for NectarCAM.

NectarCAM是用于Cherenkov望远镜阵列（CTA）的中型望远镜的相机，涵盖100 GeV到30 TeV的能量范围。相机配备了265个焦平面模块（FPM）。每个FPM包含7个像素，每个像素由一个光电倍增管，一个前置放大器，一个独立控制的电源和一个公共控制系统组成。我们开发了专用的测试平台，以验证和验证工业FPM的生产，并在将其集成到摄像机中之前在暗室中测量每个FPM的性能。我们报告了通过实验设置获得的61 FPM原型的测量性能。我们证明了光电倍增管的增益是稳定的，并且脉冲宽度，渡越时间扩展，后脉冲率和电荷分辨率在NectarCAM的规格之内。