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    • br Working with the PC

    2018-11-09


    Working with the PC_PDU program
    The program PC_PDU is designed to control EDCLLS and is to be recorded in the remote control using the PC and the ATZB-X-233-USB adapter. After selecting the appropriate COM port the interface of the main window appears (see Fig. 5). The program allows a user to change the data in the buy SBI-0206965 of the table where the ranges of the following physical quantities are given (see Fig. 5):
    The cells \"Team\" take three options:
    When a user marks a second line the addresses of remote control will rewritten to destination addresses. In the “Write to console” mode (see Fig. 5), the program will appear on the screen of the remote control. The program is stored in the remote control in the volatile memory, and when the power turns on the remote control is not erased.
    Working with the program PC_Address
    Using the desk of the remote control The remote control interface is shown in Fig. 6. The date is displayed in the upper left corner, the current time of the internal clock is in the right one. There are six buttons at the bottom of the console (Fig. 6a). The remote control provides three operation modes of the network: “programming”, “work” and “calendar”, in the “work” mode, the time, temperature, brightness and the value of the command being executed (Fig. 6b).
    Summary
    Introduction A growing interest in small-size telecommunications systems having various applications has brought significant advances in development of miniature quantum devices to which chip-scale atomic clocks (CSACs) and chip-scale quantum magnetometers (CSQMs) belong. Miniature CSACs are used to synchronize the operation of electronic devices and to set a precise time in portable applications where a small size, a low power consumption, a good long-term stability, and resistance to considerable mechanical perturbations are important [1]. Small-size CSQMs in the form of compact matrix-type sensors find application in a variety of biomagnetic studies [2]. Basic elements of miniature CSACs and CSQMs are a laser source (single-mode vertical-cavity surface-emitting laser VCSEL) and a cell that contains alkali metal atoms (typically 87Rb, 85Rb, 133Cs) in a buffer gas atmosphere. The cell quality strongly depends on the amount of alkali metal, the buffer gas pressure and composition, and the presence of impurities in the cell and directly affects the stability and reproducibility of the CSAC and CSQM characteristics. The most appropriate technology that can ensure a high quality of cells for such devices is the microelectro-mechanical systems (MEMS) manufacturing technology. It combines the advantages offered by the techniques of microelectronic component fabrication and manufacturing and assembling miniature mechanical systems [3]. The great importance for miniature CSACs and CSQMs design have the method of a resonance signal inducing for comparison an atom transition frequency with the frequency of the reference oscillator. Classical analogs of precision quantum devices use the method of double radio–optical resonance (DROR) [4,5]. The use of the microwave volume resonators hinders for the device miniaturization. In this case, the effect of coherent population trapping (CPT) is extremely attractive because it does not require the use of microwave resonators and ensures the formation of a sufficiently reliable resonance signal under the conditions of interaction between the working substance atoms and the optical field of the pump laser [6,7].
    Method for cells manufacturing For the studies, cells with a universal construction (Fig. 1) were fabricated. The microfabricated cells were designed so that they could be included into the optical path in two ways: in the transmission mode for the cells with a thickness more than 1 mm (Fig. 2a) [8,9] or with a double reflection of the pump beam from inner walls of the cells with a submillimeter thickness (Fig. 2b) [1]. The additional cavity 2 (see Fig. 1) was necessitated by the use of the method of recovery of an alkali metal from the rubidium dichromate salt including interaction of a material with an activating laser radiation [10]. Channels 3 (see Fig. 1) provided, due to a small cross-section, a transfer of rubidium atoms into the working cavity without byproducts formed during recovery of alkali vapors.