Specification: Model: BYS459-1500Material: Metal IronPurpose: Used to measure the functional value of loss to ensure the safe operation of the power system.Basic Parameters:SIG: 0~60PWR: 1~100SWR: 0~10MOD: 0~100VOLT: 0~15DISC: 7~-7 Package List: 1 x Power Meter Note: If you can't find the number 60, 61 menu, these are two radio concealed menus. Long press the F key to open the menu settings, the first menu is set to ON, press the F key to open and exit to save the concealed menu. How to Use: Receiving Display Settings: 1. Press [Func] to enter the setting menu and enable the extended menu. 2. Turn [Select] to call Setup menu item No‑060 [MTR ARX SEL]. 3. Rotate [Dial] to select external instrument display: SIG: Input signal strength displayCTR: Discriminator Center MeterVLT: battery voltagen/a: blankFS: 1MA full‑scale output signal calibration standard external instrumentTurn off: turn off the meter. 4. Press the [FUNC] button to save the setting and exit the setting menu. Transmitting Display Settings: 1. Press [Func] to enter the setting menu and enable the extended menu. 2. Turn [Select] to call Setup menu item No‑061 [MTR ATX SEL]. 3. Rotate [Dial] to select external instrument display: PWR: Transmission power displayALC: Automatic level control voltage displayMOD: Modulation level displaySWR: SWR showcaseVLT: Display power supply voltagen/a: blankTurn off: turn off the meter. Calibration Method: 1. Press [Func] to enter the setting menu and enable the extended menu. 2. Turn [Select] to call Setup menu item No‑060 [MTR ARX SEL]. 3. Rotate [Dial] to select FS. 4. Use a small flat screwdriver to adjust the rear of the calibration adjustment hole so that the title points to the full scale. 5. The calibration is complete.