London Electronics EasyReader ER4P, Инструкция по эксплуатации, Страница: 13 / 20

10
Contact closure inputs
Common
Calibration mode
Tare
Peak/Valley
Reset
Remote contact-closure inputs
Tare
Peak/valley
Reset
The contact closure inputs allow you to operate the Tare, peak/valley and reset functions
remotely, but only when the meter is ‘locked’ - see page 5.
The switched signal is 5V DC at a current of 1.5mA
CALIBRATION MODE A contact closure which selects either direct or theoretical
calibration method.
Contact open = Theoretical calibration
Contact closed = Direct calibration
TARE Contact closure resets the displayed value to zero,
regardless of input signal level.
PEAK/VALLEY Contact closure sequentially displays the peak and valley
values, since the display was last reset.
The display will time out and return to showing the actual
input after 3 seconds.
RESET Contact closure will reset the stored Tare, peak and valley and
averaging history values.