DMR30-DCV1 Series

Precision DC Voltmeter

DMR30-DCV1.A01 Page 7 of 11

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USING THE MENU

The Main Menu

The

DMR30-DCV1 has the following MAIN MENU configuration options:

•

RANGE – This submenu is used to select the meter’s measurement range. Available options may be scrolled through using the <UP>

and

<DOWN> buttons. When the desired Range setting is displayed, pressing the <RIGHT> button will update the Range option to the

displayed value and return to the main menu, while pressing the

<LEFT> button will return to the MAIN MENU without updating the value.

•

The

DMR30-DCV1 supports the following range options:

Menu Option Range

20V

+/-20 VDC input range

2V

+/- 2 VDC input range

200mV

+/-200 mV input range – ‘mV’ annunciator illuminated in this range

USING THE MENU

•

D FMT This submenu is used to select the number of digits used to display the measurement. The available options are 999, 9999, and

99999. The <UP> and <DOWN> buttons are used to scroll through these options. When the desired setting is displayed, pressing the

<RIGHT> button will update the D FMT option to the displayed value and return to the main menu, while pressing the <LEFT> button will

return to the main menu without updating the option value.

•

BRITE – This submenu is used to adjust the brightness of the meter’s display. By using the <UP> and <DOWN> buttons the display can

be adjusted from 20% to 100% intensity in 10% increments. To aid in selecting an appropriate brightness level, the meter’s brightness is

adjusted in real time as the various menu options are displayed. Once a desired brightness setting has been found, this option may be updated

by pressing the

<RIGHT> button, which updates the option value and returns to the main menu. Pressing the <LEFT> button will return to the

main menu with the brightness setting being unchanged.

•

FILT– This option selects the degree of digital filtering that is applied to the measured signal. The available options are (1) OFF - in

which no filtering is used, (2)

FAST – in which a small amount of filtering is applied to the signal, and (3) SLOW – in which a larger amount of

filtering is applied to the signal. The

<UP> and <DOWN> buttons are used to scroll through the filter options. Pressing the <RIGHT> button

will update the option to the displayed value and return to the main menu. Pressing the

<LEFT> button will return to the main menu without

updating the option.

•

ALARM – This submenu controls the operation of the alarm relay output. This submenu has three available options; (1) OFF, where the

alarm output is disabled and always off, (2)

HILIM, where the alarm relay is turned on when the measured voltage is greater than the alarm

set-point value, and (3)

LOLIM, where the alarm output is turned on when the measured voltage is less than the alarm set-point value. The

<UP> and <DOWN> buttons may be used to scroll through these options. To update the setting to the selected option and return to the MAIN

MENU, press the <RIGHT> button. To return to the MAIN MENU without updating the setting, press the <LEFT> button.

•

ASET – This submenu is a numeric entry field used to set the alarm set-point value. On entry to this submenu, the current value of the

alarm set-point is displayed and may be edited. Upon entering this option, the display will show the current alarm value, and set a blinking

cursor at the sign character. The <UP> and <DOWN> buttons are used to set the sign or to increment/decrement the currently selected digit.

The <RIGHT> button selects the next digit, or if at the rightmost digit, accepts the displayed value and returns to the MAIN MENU. The <LEFT>

button can be used to move the cursor left, or if the cursor is set to the sign position, exits the submenu without changing the current alarm

set-point value.

•

AHYST– This setting controls the alarm hysteresis value. When the alarm is set to HILIM mode, the hysteresis is subtracted from the

alarm set-point to get a ‘turn-off’ threshold below which the alarm relay is opened. Similarly (but opposite), when the alarm is set to LOLIM

mode, the hysteresis value is added to the set-point to provide a turn-off threshold above which the alarm relay is opened. The process for

setting the alarm hysteresis value is similar to setting the alarm set-point value, with the buttons providing identical functionality. Unlike

ASET

values, however,

AHYST values may only be set to values greater than or equal to zero.