2-2
IM CA71-E
2. Names and Functions of Parts
■
Front Panel
1
POWER Key
Turns on/off the power supply.
2
LIGHT Key
Turns on/off the backlight of the LCD.
MEASURE Mode – Functions for Measurement
3
DC Voltage, AC Voltage, Resistance and Pulse Input Terminals
Serve as H (positive) and L (negative) input terminals when you mea-
sure DC voltage, AC voltage, resistance, and pulse signals.
4
DC Current Input Terminals
Serve as H (positive) and L (negative) input terminals when you mea-
sure a DC current signal. Also serve as L’ terminals when you carry out
3-wire resistance measurement.
5
Three-wire Input Terminals
6
Function Selector Switch
Selects a measurement function and its range.
7
RANGE DC/AC Key
Used to further select from range options within the selected function.
• If you have selected the 1 V, 10 V or 100 V range, use this key to
toggle between the DC and AC options.
• If you have selected the FREQ range, use this key to select the range
of frequency measurement, as the key cycles through the 100 Hz, 1
kHz, 10 kHz, CPM and CPH options.
• If you have selected the mA range, use this key to select from the 20
mA and 100 mA ranges.
• If you have selected the 100 mV TC range, use this key to select the
voltage range or the type of thermocouple, as the key cycles through
the 100 mV, K, E, J, T, R, B, S, N, L and U options. (CA71 only)
• If you have selected the
Ω
RTD range, use this key to select the
resistance range or the type of RTD, as the key cycles through the
400
Ω
, Pt100 and JPt100 options. (CA71 only)
If you have selected the TC or RTD range in the source mode of
display, the TC or RTD type options on the SOURCE function side
precede those on the MEASURE mode side.
