We present the design and performance of the On-Board electronics for the Drift Tubes (OBDT) for the superlayer theta along the direction parallel to the beam-line, the new board built to substitute part of the CMS DT Muon on-detector electronics. The OBDT-theta is responsible for the time digitization of the DT chamber signals for the theta view, allowing further tracking and triggering of the barrel muons. It is also in charge of part of the slow-control of the DT chamber inner electronics in the theta view. Prototypes of the OBDT-theta board are under validation in different laboratories in CERN, as well as in demonstrator chambers installed in the CMS experiment. This allows evaluation of the full functionality of the boards in real conditions, showing very satisfactory results.

中文翻译：

---

OBDT-theta 板：漂移管室的 theta 视图的时间数字化。

我们展示了沿平行于束线方向的超级层 theta 漂移管 (OBDT) 板载电子器件的设计和性能，该新板用于替代 CMS DT Muon 探测器上电子器件的一部分。 OBDT-theta 负责对 DT 室信号进行 θ 视图的时间数字化，从而可以进一步跟踪和触发桶状 μ 子。它还负责 DT 室内部电子设备在 theta 视图中的部分慢速控制。 OBDT-theta 板的原型正在 CERN 的不同实验室以及 CMS 实验中安装的演示室中进行验证。这样可以在实际条件下评估电路板的全部功能，并显示出非常令人满意的结果。