DMR35-DCxA.A01.D04 Page 5 of 8

DMR35-DCxA Series

DMR35 DC Micro and Milli-ammeters

www.murata-ps.com

METER CONFIGURATION

Meter Range Settings

DMR35 meter configuration is controlled through a 5-position DIP switch (SW1-SW5) on the rear of the meter. The individual switches are labelled 1

through 5 on the unit, and the ON position of the switches is also labelled. These switches are used to select both the meter’s measurement range

and the display intensity (brightness).

Switches SW3 through SW5 select the meter’s measurement range, as shown in the table below. Note that for these five meter models, switch SW3

selects either unipolar (OFF) or bipolar (ON) measurement ranges. Switches SW4 and SW5 select the magnitude of the measurement range.

Switch Setting

DMR35 Model

SW3 SW4

SW5

DIP switch

-DCMA1

-DCMA2

-DCMA3

-DCMA4

-DCUA

OFF

OFF

OFF

0-1 mA

0-15 mA

0-100 mA

0-300 mA

0-50 µA

OFF

OFF

ON

0-3 mA

0-20 mA

0-150 mA

0-500 mA

0-100 µA

OFF

ON

OFF

0-5 mA

0-25 mA

0-200 mA

0-750 mA

0-200 µA

OFF

ON

ON

0-10 mA

0-50 mA

0-250 mA

0-1000 mA

0-500 µA

ON

OFF

OFF

±1 mA

±15 mA

±100 mA

±300 mA

±50 µA

ON

OFF

ON

±3 mA

±20 mA

±150 mA

±500 mA

±100 µA

ON

ON

OFF

±5 mA

±25 mA

±200 mA

±750 mA

±200 µA

ON

ON

ON

±10 mA

±50 mA

±250 mA

±1000 mA

±500 µA

The meter behaves differently depending on whether bipolar or unipolar range setting is selected. When the meter is set to a bipolar range setting, it

will display measurements over a +/- range, flashing the display to indicate overflow for input values greater than +RANGE, and flashing the display to

indicate underflow for input values less than –RANGE. A zero-value measurement will illuminate a single center LED. Increasingly negative input values

will illuminate the bargraph from center to the leftmost LED until all left-side LEDs are illuminated at negative full-scale, and increasingly positive input

values will illuminate the bargraph from center to the rightmost LED until all right-side LEDs are illuminated at positive full-scale.

When set to a unipolar range setting, the meter will display measurements over a positive only range. Negative input values will result in an underflow

condition of a flashing zero reading. Positive input values exceeding the maximum range will result in a flashing overflow condition. The bargraph will

indicate a measurement of zero or less by illuminating the leftmost LED, and increasingly positive input values will illuminate the bargraph to the

rightmost LED until all LEDs are illuminated at positive full-scale.