0 Introduction The transmitter of a new type of radar adopts flyback charging and all-solid-state high-voltage modulator technology, and uses PC104-based control and protection technology, enabling unattended operation. The transmitter has always operated stably and reliably. However, the transmitter control only has functions such as local power on/off, fault status display, and BITE (built-in test equipment) information transmission. With the increasing frequency of equipment use, it is possible to add display and control functions to the transmitter control console to meet the requirements of information platform development. Of course, this is based on the high automation design and high reliability of the transmitter. This research includes: operation and display, human-machine interface, interface protocol, etc. Importantly, the original local control and protection functions of the transmitter must not be changed, and measures to prevent interference should not affect the normal operation of the transmitter. 1 Research Basis The principle block diagram of the new radar transmitter is shown in Figure 1. The transmitter mainly consists of a pre-stage solid-state amplifier, a final stage high-power high-gain klystron, rectification and filtering, flyback charging, all-solid-state high-voltage modulator, pulse transformer tank, control and protection system, and cooling system. Except for the klystron, which is a vacuum tube device, all other components of the transmitter utilize highly reliable, long-life solid-state devices. Due to its forced air cooling design, it boasts high power and a compact size, allowing it to be installed on various platforms, including ground-based, vehicle-mounted, and shipborne systems. Figure 2 shows the core board of the transmitter's control and protection system, primarily based on a PC 104 industrial computer. Figure 3 is a block diagram of the automatic control and protection principle. The control and protection board is the core of the entire system, and the PC 104 and EPLD (Erasable Programmable Logic Controller) are the core of this board. It centrally displays the transmitter's operating process and status, and promptly transmits relevant information to the radar main control console via RS-422. The industrial computer's execution cycle for the entire program is approximately 7 ms, which is insufficient for real-time, rapid control. Combining the industrial computer with the EPLD allows for both software control of the transmitter and real-time, rapid control and protection. 2. Operation and Display The console operations include: transmitter power supply, transmitter power on/off, local/remote control, wide/narrow pulse switching, and arc testing. The console display includes: fault status display, power display, and high-frequency detector envelope display. Specifically: a 19-inch LCD monitor is used for fault status display; an HP437B power meter is used to measure the transmitter output power; and a dual-channel TDS3012B oscilloscope with storage function is used to monitor the high-frequency detector envelope and modulator output, among other key waveforms. 3. Human-Machine Interface A user-friendly human-machine interface is a concrete manifestation of functional implementation and optimized design. Figure 4 shows the transmitter's simulated display and control interface. The human-machine interface consists of the following six functional areas: a) Static graphical interface area. This area intuitively reflects the transmitter's structural layout and displays its components, including: preamplifier, control and protection sub-unit, magnetic field power supply 1, magnetic field power supply 2, filament anti-corrosion coil power supply, titanium pump power supply, cooling system, arc reflection, klystron, pulse transformer and rectifier assembly, filter assembly, flyback assembly, trigger assembly, and modulator. b) Dynamic graphical interface area. Real-time display of transmitter operating status: Green indicates that the sub-unit is working normally; red indicates that the sub-unit is faulty; the original color indicates that the sub-unit or system is not working. In Figure 4, the transmitter cooling and low voltage are normal, but the filament reverse coil power supply is faulty. The specific fault can be given in the fault list area. The legend shows that the filament power supply in this sub-unit is faulty, while the reverse coil power supply is normal. c) Status indication area. Displays the transmitter settings and operating status, including: whether low voltage, high voltage, preheating, and power are normal; whether the transmitter control is local or remote; whether the front-end power output is sufficient for the tuner tube or to the antenna; whether the high voltage report has timed out; the transmitter's low voltage start time and high voltage start time, etc. d) Fault list area. Displays specific faults. e) Display control data area. Displays the main radar data in real time through the interface with the radar system for the transmitter to refer to during missions. f) Console command display area. A dedicated log storage area is set up in this area. Its functions are: to save the transmitter's working status and data when necessary, such as during missions, flight calibration, maintenance, and high-voltage operation; and to save faults, including fault location and time information. The purpose of setting up the log is to provide effective parameters for routine transmitter maintenance and to provide conditions for rapid fault diagnosis. 4. Interface Protocol The interface with the radar display control must conform to the internal transmission protocol specified by the radar system, including the content and format of data transmission. According to the original transmitter control and protection computer interface design, a serial port has been reserved as a communication port. Therefore, information can be exchanged with the display control subsystem through the serial port. The data format is shown in Table 1. 5. Initialization Program The transmitter display control interface program completes the initialization configuration of hardware and software resources through the call to the OnInitialUpdate() function. This includes display interface initialization, application status flag initialization, and serial port initialization. 1) Display Interface Initialization: To make the display interface more user-friendly, the main interface graphics and other related graphics are first drawn proportionally based on the actual object. Then, these images are added to the project through the VC menu's resource insertion function. When the program starts, the initialization program OnInitialUpdate() is called to load the image, and then the font of each control key in the display control interface is set. The program is as follows: 2) Fault status flag and communication word initialization Initialize all global variables and status flags required in the program to ensure the normal operation of the program. For example: 3) Serial port and timer initialization The transmitter control console needs to complete the response to radar display control commands and also complete the control of the transmitter. Therefore, it is necessary to start 3 serial port threads. The thread starting method is the same. In the InitPort() function, set the port number 5, the baud rate 9600 bit/s, the data bits 8 bits, no parity bit, and 1 stop bit. Start the thread through the StartMonitoring() function. The program is as follows: 6 Anti-interference measures Since the control console display control system is relatively independent, anti-interference is mainly solved through system design and interface design. 1) System grounding The high reliability of the new transmitter is based on the anti-interference technology of the transmitter system, such as using an integrated fully welded sealed cabinet and grounding the whole machine at one point. The newly designed console display control system should adopt an integrated, fully welded, sealed structure design consistent with the transmitter. The signal ground, shielding ground, and safety ground should be combined into a single point and connected to the transmitter's main ground. 2) Interface Technology: The console display control system is independently powered and equipped with power filters. The low-voltage power supply uses secondary isolation technology to isolate it from the main power supply. Signal transmission uses a standard serial port, including communication with the transmitter and the interface with the radar display control, satisfying the original system's interface protocol. 7 Conclusion The research on the new transmitter console display control technology is based on the high reliability of the transmitter and the scalability of its control and protection. The difficulty in its implementation lies in solving the problems of reasonable technical solutions and anti-interference techniques. The basis for realizing console display control was analyzed, the program was optimized, the display control interface was provided, and measures were taken to address potential interference. This display control technology has been successfully applied to multiple radar transmitters, but the engineering implementation of console display control on this vehicle-mounted radar transmitter still requires system debugging and improvement.