Extech Instruments 422123 User Manual
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Extech Instruments 422123 User Manual

Precision multifunction calibrator
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User's Manual
Precision Multifunction Calibrator
Model 422123
Introduction
Congratulations on your purchase of the Extech 422123 Precision Multifunction Calibrator.
This device can source mA, mV, V, Temperature (°C/°F) and Frequency. This device also
offers STEP and AUTO RAMP features. Careful use of this meter will provide years of
reliable service.
Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176
FAX 781.665.0780 - TestEquipmentDepot.com
Visit us at www.TestEquipmentDepot.com
99 Washington Street
Melrose, MA 02176
Phone 781-665-1400
Toll Free 1-800-517-8431

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Summary of Contents for Extech Instruments 422123

  • Page 1 Model 422123 Introduction Congratulations on your purchase of the Extech 422123 Precision Multifunction Calibrator. This device can source mA, mV, V, Temperature (°C/°F) and Frequency. This device also offers STEP and AUTO RAMP features. Careful use of this meter will provide years of reliable service.

  • Page 2: Meter Description

    Meter Description 5-digit LCD display Numeric and Function Keypad SHIFT °C Thermocouple input jack Power ON/OFF key SHIFT button (activates 2 functions on keypad) Function Switch NOTE: The battery compartment, tilt stand, and AC Adapter/External Battery Pack input jack are located on the rear of the meter. Keypad Function Commands Select output range for current mode...

  • Page 3: Operation

    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.
  • Page 4 DC Voltage Output (0 to 1V, 0 to 12V, 0 to 100mV) 1. Ensure that the meter's test leads are not shorted or connected to any devices. 2. Slide the function switch to the 'V, mV' position and wait for STANDBY to extinguish. 3.

  • Page 5: Advanced Functions

    Advanced Functions Programming an Output in Percent (Current and Voltage Outputs Only) Output values can also be programmed in percent. For example, a 4 to 20mA output can be programmed as follows: 0% = 4mA, 50% = 12mA, and 100% = 20mA. The main LCD digits will reflect the actual output while the top (smaller) digits will display the percentage.

  • Page 6: Maintenance

    Automatic Ramp Function (Current and Voltage Outputs Only) → → The Auto Ramp feature adjusts the meter's output from 0 to 100% 100% to 0% 0 to 100%, and so on. The top (smaller) LCD displays the percent output while the main LCD digits display the actual signal output.

  • Page 7: Specifications

    Specifications Display Large 5 digit multifunction LCD Output (source) Ranges, Resolution, and Accuracy DC Current 4 to 20.000mA, 0 to 20.000mA, 0 to 24.000mA Accuracy for all mA ranges: ± (0.025% + 3 digits) DC Voltage 0 to 100.00mV; 0 to 1.0000V; 0 to 12.000V; Accuracy for all voltage ranges: ±...
  • Page 8 Appendix - Frequency Output Table All frequencies below 125Hz (inclusive) are available in 1 Hz steps. However, only specific frequencies above 126 (inclusive) are available. Refer to the Table below. 126.00 127.03 128.07 129.13 130.20 131.30 132.41 133.54 134.12 135.28 136.46 137.06 138.27...
  • Page 9 19230.76 20000.00 20833.33 21739.13 22727.27 23809.52 25000.00 26315.78 27777.77 29411.76 31250.00 33333.33 35714.28 38461.53 41666.66 45454.54 50000.00 55555.55 62500.00 Back to the Extech 422123 Product Page Visit us at www.TestEquipmentDepot.com V 2.0 12/04 Test Equipment Depot - 800.517.8431 - 99 Washington Street Melrose, MA 02176...

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