RF4200 用户手册 RF4200 USERS MANUAL This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.
Warning: Changes or modifications to this unit not expressly approved by the party responsible for compliance could void the user authority to operate the equipment. Notes: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation.
目录 Contents 1. RF4200 硬件连接说明 .......................................................................................................................................... 1 1. RF4200 Hardware Connection Instruction ....................................................................................................... 1 2. RF4200 软件操作说明 .......................................................................................................................................... 5 2.
1. RF4200 硬件连接说明 1. RF4200 Hardware Connection Instruction 1.
1.
1.
1.
2. RF4200 软件操作说明 2. RF4200 Software Tuning Instruction 2.1 读取工作参数 2.1 Working Parameters Reading 2.1.1 有线调试的接线方式 2.1.1 Cable Connection Method 使用 RS232 串口线连接计算机与 RF4200 主板，安装 RS232 串口驱动程序，并 在计算机上打开 CardMonitor.exe 软件，点击 号，点击 (Refresh)按钮，选择正确的 COM (Open)按钮打开串口，软件会自动识别主板类型，主板参数配置如图 1-1 所示。如果有的参数没有显示，可以点击 (Read)按钮。 One way is the usual on site tuning. Use RS232 cable to connect PC to RF4200 board, install RS232 driver, open the software CardMonitor.
2.2 测试系统工作情况 2.2 Working Conditions Testing 发射天线与接收天线相距 1.5 米，系统上电后，可以正常检测标签并报警，报警 时蜂鸣器发出嘀嘀声音，报警指示灯闪烁，说明系统工作正常。报警声音大小由 P201 控制，有低中高 3 个等级，默认是中等。测试距离，4*4 软标：收发相距 1.5 米；5*5 软标：收发相距 1.6 米；黑色小方：收发相距 1.8 米。 Put the TX antenna 150cm far from RX antenna, power on, use soft label or hard tag to test until the RF4200 system alarms, the buzzer sounds “di...di...di.....”and also the leds on rx board flashing, then it means the system is working normally. The alarm sound volume is controlled by P201 on the RX board.
Click Read button , the software will get all parameters from the RF4200 board that connects to the PC. On the left side of the software, each parameter data could be changed. After changed, click Save button are not well changed, then click Reset button to save the new data. If the data to resume factory setting. Figure 3-2 五个档位分别代表主板从低到高的五个灵敏度档次（如图 3-2 所示）。选择对应 档位，然后点击 (Save)按钮进行保存，可对主板的灵敏度进行快速设置。灵敏度 参数设置越高，主板检测距离越远，同时抗干扰性能越差。 The above 1 2 3 4 5 five buttons are the sensitivity levels of the board.
1、灵敏度一键设置，默认参数是 3。这个参数代表主板灵敏度常规水平，1 表示 灵敏度很低，识别标签距离较近，但是误报几率较小；5 表示灵敏度很高，识别标签 距离较远，但是误报几率相对较大。从 1 到 5 共有 5 个等级，表示灵敏度逐步变强。 1. Sensitivity one-button setting: 3 is the factory setting, it means the normal sensitivity using in normal environment. 1 means the sensitivity is very low, the detection is very narrow, but the false alarms will not come easily; 5 means the sensitivity is very high, the detection is very wide, but the false alarms will come easily. 2、uid，是主板的唯一标识，每个主板都有唯一的 uid，主板之间的 UID 不会重 复。 2.
（非 0）后，保存即可，租赁时间以 1 刻钟为单位，如果设置为 4，表示 4 刻钟（1 小时）, 设置范围是 1-30000。如果需要禁止，可以在 Enable 处点击并选择 Disable 后，保存即可。 7. The lease time is used to limit the effective working time for the system. The factory setting is to disable this function, means the system can work for unlimited time. The status can show whether the lease time function is enabled: enable is to limit the working time, while disable is not to limit the working time.
11、报警次数（alarm count），该参数表示从主板上电起至当前的总计报警次 数，断电后清零。 11. The alarm count is total alarms quantity that counted from the system power on of the last time. When the power off, the number is resume to 0.
号、峰值、噪声值、最小峰值、最大峰值（如图 4-2 所示）。 14. The alarm data is the alarm daily records. Select alarm data, click button to display the new alarm records. The records include alarm id, peak, snr, peak pos min, and peak pos max. Figure 4-2 2.5 误报处理 2.5 False Alarm Processing Methods 1）、上电后，假如存在误报，首先确认周围是否存在标签干扰，如果有的话， 请让其远离天线 2 米以外，避免系统受其干扰。如果没有标签，首先保证命中次数为 8，峰值位置差为 10，其次可依据软件中的报警数据确定各个参数。 1). After power on, if there is false alarms. Firstly, you check whether there is a tag around.
Figure 5-1 B. 降低信噪比 （如图 5-2 所示） reduce the snr low Figure 5-2 C. 降低命中次数（如图 5-3 所示） reduce the hit count Figure 5-3 D. 降低峰值位置差（如图 5-4 所示） reduce the peak pos gated Figure 5-4 主要修改的是峰值门限以及信噪比。A and B are the mainly ones to be modify. 上述过程中，如果出现误报，请参照上述关于误报处理过程修改参数. During the above processing, if there false alarm, please refer to the False Alarm Processing.
then it will be valid. 2.6 特殊误报屏蔽 2.6 Special False Alarms Shielding Methods 在现场，很多时候系统偶尔的误报并非是受到了覆盖标签频率的全范围干扰，而 是某个频段的干扰。在这个时候，我们就可以通过观察报警数据日志，找出特殊误报 的范围，设置参数规避掉一部分的特殊误报。 In the working site, the occasional false alarm of the system is not caused by the full range interference of the label frequency, but by the interference of a certain frequency band. In this case, we can observe the alarm data log, find out the scope of special false alarms, set parameters to avoid this special false alarms.
Figure 6-2 则我们就可以规避掉报警记录中，第 3 到第 8 条情况下的误报。 Then the false alarm of alarm data No. 1 to 8 will stop. 主板会随时采集检测范围内的无线信号，并对当前采集到的信号的特性进行分析， 符合标签特征的信号则进行报警。报警数据日志，就是主板每次识别出标签（报警） 的特性的综合数据记录。信号必须最终同时符合三个特性（peak、snr，peak pos max-peak pos min）的判断条件，才会被认为是标签信号。以下是三个特性的判断 条件： The main board will collect the RF signal in the range of detection at any time, and analyze the characteristics of the signal collected at present, and give the alarm to the signal that conforms to the feature of the tag.
The peak (Figure6-3) value must be inside range_1 or range 2 Snr： Figure 6-4 信号的 snr 数值（如图 6-4 所示），必须在 range_1 或者 range_2 范围内。 The snr value (Figure6-4) must be inside range_1 or range_2. Peak pos max - Peak pos min： Figure 6-5 信号的 peak pos max 和 peak pos min 的差值，必须小于 peak pos gated 参数设定的值（如图 6-5 所示）。在上面一组报警数据日志中，只有前 3 条记录的 Peak pos max - Peak pos min 差值有效，其余可忽略，不作为误报判断依据。 The difference between the peak pos. max and the peak pos.
and can not shield false alarms by setting parameters, then we can also observe the values of snr, peak pos max - peak pos min, whether or not in a small range, it is also possible to set corresponding parameters to avoid false alarms.
