Fluke 125B/S Calibration Guide - Page 41
Calibration Adjustment, Calibration Number and Date, Start the Calibration Adjustment
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Industrial ScopeMeter Calibration Adjustment Calibration Adjustment This section provides the complete Calibration Adjustment procedure for the Test Tool. Each Test Tool allows closed-case calibration using known reference sources. It measures the reference signals, calculates the correction factors, and stores the correction factors in RAM. After the calibration is complete, the correction factors can be stored in FlashROM. Calibrate the Test Tool after it is repaired or if it fails the performance test. The Test Tool has a normal calibration cycle of one year. All Test Tool models use the same Calibration Adjustment procedure. For all calibration steps: 1. Let the Calibrator warm up. See the Calibrator Operators Manual. 2. For each calibration point, wait for the Calibrator to become stable. 3. Let the Test Tool warm up. See Warm Up and Pre-Calibration on page 34. 4. Make sure the Test Tool battery is charged sufficiently. 5. See Table 2 for a list of required equipment. If a Calibrator is not available, you can substitute another calibrator as long as it meets the minimum test requirements. Calibration Number and Date When valid calibration data is stored in FlashROM after the calibration adjustment procedure is done, the calibration date is set to the actual Test Tool date and the calibration number increments by one. To display the calibration number and date: 1. Push to open the USER OPTIONS menu. 2. Push . 3. Highlight Information. 4. Push to open the INFORMATION screen. 5. Push to return to normal mode. Start the Calibration Adjustment To start calibration adjustments: 1. Power the Test Tool with the BC430 power adapter. 2. Check the Test Tool date and adjust the date if necessary: a. Push to open the USER OPTIONS menu. b. Push to highlight Date Format. c. Push to select format and adjust the date. The Calibration Adjustment Procedure uses built-in calibration setups that are accessed in the Maintenance mode. To go to the Maintenance mode: 1. Push and hold . 2. Push and release . 3. Release . The display shows the Calibration Adjustment Screen and the first calibration step, Warming Up (CL 0200), and the calibration status :IDLE (valid) or :IDLE (invalid). When the Test Tool is in the Maintenance Mode, only the F1 to F4 soft keys, the ON/OFF key, and the backlight key operate, unless otherwise stated. The Calibration Adjustment Screen shows the actual calibration step (name and number) and its status in this format: Cal Name (CL nnnn) :Status Calibration step nnnn See Table 12 for an explanation of the screen messages and softkey functions. 33