V3.0 5/09
3
Operation
Powering the meter
1. Select a means of powering the unit (9V battery, external pack, or optional AC
adapter). The 9V battery compartment is located on the rear (bottom) of the meter
secured by one Phillips head screw. The AC adapter and the External Battery Pack
plug into the DC12V jack located on the back of the meter just above the tilt stand. The
Battery Pack holds six 1.5V 'AA' batteries. The optional AC Adapter is recommended
for heavy usage.
2. Press the red ON/OFF button to turn the meter ON.
3. Wait until the STANDBY display extinguishes before using the meter.
4. To turn the meter OFF, press the red ON/OFF button again.
Note: The 422123 calibrator will begin to output the desired
signal after the user presses ENTER or immediately after the
fifth digit has been entered.
DC Milliamp Outputs (4 to 20, 0 to 20, and 0 to 24mA)
1. Ensure that the meter's test leads are not shorted or connected to any devices.
2. Slide the function switch to the mA position and wait for the STANDY display to
extinguish.
3. Connect the meter's red (positive) and black (negative) test leads to the device or
circuit under calibration. Use banana-to-alligator leads if necessary.
4. Select the desired mA output range by pressing the SHIFT button and then one of the
current output keys:
4-20mA output
0-20mA output
0-24mA output
5. Enter a mA current output using the numeric keys (for example, press '5') then ENTER
to output 5mA or press 5.0000. Note that the 5-digit LCD can only accept 5 digits.
6. If the circuit under calibration is open or if the load that the meter is driving is greater
than 1000Ω, the meter will display the OL (overload) alarm warning and will emit a
series of beeps.
