Getting Started
4
CDM250 User Manual
Front Panel
Figure 2 shows the front-panel controls, connectors, and indicators
with brief descriptions of the items following the figure.
1
5
2
3
4
6
7
8
9
Figure 2: Front Panel
1. POWER button. Powers the CDM250 on or off. Power ON is
indicated by the LED display.
2. 10 A UNFUSED jack. Input connector for positive (red) test lead
when instrument is used to measure high current (over 2 A but
less than 10 A).
3. V–
. Input connector for positive (red) test lead. Used for
AC volts, DC volts, and ohms (
) functions.
4. LED Display. Shows voltage, current, or resistance value.
Display shows the number 1 at the extreme left in an overrange
condition. Negative voltages or currents are indicated automati-
cally with a minus (–) sign at the extreme left of the display.
5. RANGE buttons. Push to select the highest value of the voltage,
current, or resistance to be measured.