Huazheng HZGC3521 Series, Руководство пользователя

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Three-phase energy meter field calibrator
Note: when the instrument is used on the indoor calibration console, select battery or adapter
power supply as the mode of power supply, and the voltage terminal power supply will
affect the output voltage accuracy or harmonics of the calibration console.
2.10 Adjustment of LCD Contrast
Thanks to the technical characteristics of LCD screen itself, its contrast will change with the
changes in ambient temperature. To adapt to different working temperatures, the instrument has
been set with LCD contrast adjustment function; the screen contrast can be adjusted to select the
best display effect the most suitable for working environment. Press "↑", the screen brightness
increases, and press "↓", the screen brightness falls. When using the battery power supply,
reducing the display brightness will extend the time of battery supply.
2.11 Input and delete characters
2.111 Input characters
Enter the setting status, move the cursor to the desired input character, press the "switch" key
to switch the input mode, and then press the "switch", the lower right corner of the instrument
screen shows icon, which is Chinese character input mode; if
icon appears, it is lowercase letter input mode; if icon appears, it is capital letter