Martel Electronics DMC1400 - Manual (Page 9)

The display of the calibrator, shown in Figure 3, is divided into three
main sections: the upper display, the lower display, and the menu bar.
The upper display is used for measuring dc voltage, dc current with
and without loop power, and pressure.
The lower display can be used for both measuring and sourcing.
The menu bar is used to setup both the upper and the lower display
to perform the desired function.
Table 3 explains the different parts of the display:
Table 3: Display Functions
No. Name Description
1 Primary Parameters Determine what parameter is going to be
measured or sourced. The available options
for the upper display are:VOLTS IN, PRES-
SURE, mA IN, and mA LOOP. The available
options for the lower display are:VOLTS, TC
(thermocouple), RTD, FREQ (frequency),
PULSE, PRESSURE, mA, and mA 2W SIM.
2 Input/Output control Switches the lower display between input
mode (read), and output mode (source).
3 Additional Settings Available only for TC (thermocouple), and
RTD measurements. For TC this setting turns
the CJC (Cold Junction Connection) on and
off. For RTD measure [RTD IN], this setting
sets the number of wires used in the measure-
ment (2-wire, 3-wire, or 4-wire)
4 Span Indicator Available only for mA and mA LOOP. Shows
where in the preset span the measured value
falls. Fixed for mA at 4 (0%) and 20 (100%).
5 Units Shows what unit the measurement or source
value is in. Available options are for RTD and
TC (°C or °F), and for FREQ and PULSE
(CPM, Hz, or KHz)
6 Sensor Types Allow for measurements to be made for differ-
ent types of RTDs and TCs. All types are
shown in the Specifications. Also, displays the
amplitude of the pulse and frequency source,
and pressure units.
7 Numeric Displays Display the numeric values of the signal being
measured, or sourced. An "OL" reading indi-
cates an out of range or overload condition.
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