This document describes the WAVETEK 2020/2030 Autoranging Digital Multimeters, which are designed for various electrical measurements.
Function Description
The 2020 and 2030 models are autoranging digital multimeters, meaning they automatically select the appropriate measurement range for the best resolution. They are capable of measuring:
- DC Voltage (V===): Ranges from 100mV to 1000V.
- AC Voltage (V∼): Ranges from 100mV to 1000V, with true RMS AC-coupled measurement for distorted waveforms.
- DC Current (A===): Ranges from 1000µA to 20A.
- AC Current (A∼): Ranges from 1000µA to 20A, with true RMS AC-coupled measurement for distorted waveforms.
- Resistance (Ω): Ranges from 100.00Ω to 20.00MΩ.
- Diode/Continuity Test (→››): Measures voltage drop across a diode junction and checks for electrical continuity with an audible tone.
- Capacitance (┫↑): Ranges from 20nF to 2mF.
- Frequency (Hz): Ranges from 19.999kHz to 1.9999MHz.
- Duty Cycle (%): Measures the duty cycle of a signal.
- Pulse Detection (Logic, CDV): Detects positive transitions in a signal, indicated by a short tone, with a continuous tone for rates above 20Hz.
The multimeters feature a 41-segment bargraph display, which provides an analog-like indication of the measurement value's percentage within the selected range, useful for circuit adjustments.
Important Technical Specifications
General Specifications:
- Display: 5-digit LCD, 18888 counts, with annunciators, menu features, and a 41-segment bargraph.
- Polarity Indication: Automatic.
- Zero Adjustment: Automatic.
- Overrange Indication: "OL".
- Low Battery Indication: Appears at 7.5V (approx. 20 hours left), with automatic cut-off at 6.6V.
- Display Update Rate: 2/sec nominal (20/sec for bargraph).
- Operating Temperature: 0 to 50°C, 0 to 80% Relative Humidity.
- Storage Temperature: -40°C to 70°C, 0 to 95% RH (battery removed).
- Temperature Coefficient: <0.1 x (spec. accuracy)/°C (0° to 20°C and 30° to 55°C).
- Power: Standard 9-volt alkaline battery (NEDA 1604, JIS 006P, IEC 6F22).
- Auto Power-Off: After 30 minutes of inactivity.
- Battery Life (Typical): 200 hours (alkaline).
- Dimensions (H x W x D): 7.5" x 3.5" x 1.3" (175 x 90 x 34 mm).
- Weight (incl. battery): 568 g (20 oz).
- Shock and Vibration: MIL-T-28800, class II.
- Case Material: Flame retardant, high-impact thermoplastic.
- Safety: IEC1010-1 certified for Installation Category III, UL3111, IP44.
- EMC: Complies with European Community Directives: 89/336/EEC and 73/23/EEC (as amended by 93/68/EEC).
Electrical Specifications (Accuracies at 23°C ± 5°C, <75% RH, guaranteed for one year):
-
DC Volts:
- Ranges: 100mV, 1000mV, 10V, 100V, 1000V.
- Resolution: 0.01mV in 100mV range.
- Accuracy: 2020: ±(0.25%rdg +2dgt); 2030: ±(0.10%rdg +2dgt).
- Input Impedance: 10MΩ.
- Response Time: <2s.
- OL Protection: 1000VDC or Peak AC, 6kV transient protection.
- Lethal voltage indication: Lightning bolt in LCD and double beep if input exceeds 25V.
-
AC Volts (45-1000Hz):
- Ranges: 100mV, 1000mV, 10V, 100V, 1000V.
- Resolution: 0.01mV in 100mV range.
- Accuracy: 2.0% rdg +8dgt at 45 to 2kHz (to 400Hz in 100mV range).
- Input Impedance: 10MΩ shunted by <100pF.
- Conversion Type: True RMS, AC coupled (AC+DC available in V=== function with second function key).
- Crest Factor: 1:1 through 5:1.
- OL Protection: <10Hz: 400Vrms; >10Hz: 1000Vrms, 6kV transient protection.
-
DC Current:
- Ranges: 1000µA, 10mA, 100mA, 1000mA, 10A, 20A.
- Resolution: 0.1µA in 1000µA range.
- Accuracy: 2020: 1.0%±2dgt (1000µA), 0.5%±1dgt (10-100mA), 1.0%±2dgt (1000mA), 1.0%±1dgt (10-20A).
- Accuracy: 2030: 0.5%±2dgt (1000µA), 0.35%±1dgt (10-100mA), 0.5%±2dgt (1000mA), 1.0%±1dgt (10-20A).
- Voltage Burden: 15mV/mA (1000µA to 100mA), 40mV/A (1000mA to 20A).
- OL Protection: mA input: 0.25A/600V fuse (1000A interrupt rating); A input: 10A continuous, 20A for 30s, 15A/600V fuse (100kA interrupt rating).
-
AC Current (45-1000Hz):
- Ranges: 1000µA, 10mA, 100mA, 1000mA, 10A, 20A.
- Resolution: 0.1µA in 1000µA range.
- Accuracy: 1.7%rdg ± 8dgt (1000µA to 1000mA), 1.7%rdg ±3dgt (10-20A).
- Conversion Type: True RMS AC coupled (AC+DC available in A=== function with second function key).
- Crest Factor: 1:1 through 5:1.
- OL Protection: See DC current.
-
Resistance:
- Ranges: 100.00Ω, 1000.0Ω, 10.000kΩ, 100.00kΩ, 1000.0kΩ, 10.000MΩ, 20.00MΩ.
- Resolution: 0.01Ω in 100Ω range.
- Accuracy: 2020: 0.7%±4dgt (100Ω), 0.5%±4dgt (1kΩ-1MΩ), 1.5%±4dgt (10MΩ), 2.0%±4dgt (20MΩ).
- Accuracy: 2030: 0.5%±4dgt (100Ω), 0.3%±4dgt (1kΩ-1MΩ), 0.7%±4dgt (10MΩ), 1.2%±4dgt (20MΩ).
- Max Open Circuit Volts: 6.5V.
- OL Protection: 500VDC/AC RMS.
-
Diode/Continuity Test:
- Range: 2V. Resolution: 0.2mV. Test Current: 1.0mA max.
- Continuity Threshold: <200mV with continuous tone.
- Open Circuit Indication: "OPEN".
- OL Protection: 500VDC or RMS AC.
-
Capacitance:
- Ranges: 20nF, 200nF, 2µF, 20µF, 200µF, 2mF.
- Resolution: 100pF in 20nF range.
- Accuracy: 2.0%rdg +3dgt (20-200nF), 2.0%rdg +2dgt (2-20µF), 3.0%rdg +3dgt (200µF), 3.0%rdg +8dgt (2mF).
- Max Open Circuit Voltage: 6.5V.
- OL Protection: 500VDC or RMS AC.
-
Frequency Counter:
- Ranges: 19.999kHz, 199.99kHz, 1.9999MHz.
- Resolution: 1.0Hz in 19.999kHz range.
- Accuracy: 0.2%rdg +1dgt (19.999kHz), 0.2%rdg +2dgt (other ranges).
- Sensitivity: 100mV (19.999kHz, 199.99kHz), 1.0V (1.9999MHz).
- Input Impedance: 51kΩ into diodes, AC coupled.
- OL Protection: 300VDC or RMS AC.
-
Duty Cycle:
- Frequency Ranges: 40 to 1000Hz, 1k to 20kHz, 20 to 100kHz.
- Percent of Range: 5 to 95%. Resolution: 0.1%.
- Accuracy: 2.0% rdg ±1dgt (40-1000Hz), 1.0% rdg ±1dgt (1k-20kHz), 5.0%rdg ±1dgt (20-100kHz).
- Input Impedance: 51kΩ into diodes, AC coupled.
- OL Protection: 300VDC or RMS AC.
-
Pulse Detector:
- Indication: Positive transitions detected, emits a 50ms tone (continuous if transition rate >20Hz).
- Detector: AC coupled. Logic Levels: TTL, CMOS. Threshold: 2.6V.
- Min Pulse Width: 50ns. Max Pulse Rise Time: 10ns. Pulse Repetition Rate: 1MPPS.
- Input Impedance: 10MΩ shunted by 150pF.
Usage Features
- Easy Operation: Turn on by rotating the function/range switch from OFF to the desired measurement parameter.
- Autoranging: Automatically selects the best range for measurements, with the option to lock a specific range via menu.
- Menu Functions: Access additional features like:
- Reading Hold (HLD): Freezes the displayed value, useful for unstable readings or when probes need to be removed. A tone indicates a stable value is recorded.
- Relative Mode (REL): Stores a reference measurement and displays subsequent readings as a difference from this reference, ideal for eliminating test lead resistance in low-resistance measurements.
- Auto Min/Max/Average (MX-MN AV): Records minimum, maximum, and running average values of input signals. New recordings are indicated by a beep.
- Peak Hold (PK): Records positive and negative peak values as short as 1ms for AC/DC current and voltage.
- Range Lock (RNG): Manually locks the current range, allowing for manual range selection.
- Fault Finder™: Emits a tone whose pitch changes with the input value, useful for peaking, nulling, and finding intermittent faults.
- Safety Features:
- Input Protection: All inputs are protected against continuous overload up to specified limits.
- Dangerous Voltage Warning: A lightning bolt symbol and a double beep indicate potentially lethal voltages (>25V).
- Incorrect Input Warning: A continuous tone and "FErr" display warn if test leads are connected to a current input but the selector is not set to a current range.
- Safety Test Leads: Shrouded banana plugs and insulated probe tips prevent accidental shocks and shorts.
- Protective Holster: Includes a holster with a tilt stand for protection and ease of use, and a velcro strap for hanging. Test lead probes can be attached for storage or single-hand measurement.
Maintenance Features
- Battery/Fuse Replacement:
- Requires turning off the multimeter and disconnecting test leads before opening the rear cover.
- mA Input Fuse: 0.25A/600V quick-acting fuse (Wavetek part number FP250).
- 10/20A Input Fuse: 15A/600V ceramic quick-acting fuse (Wavetek part number FG3000-400-214).
- Battery: Standard 9-volt alkaline battery (NEDA type 1604 or equivalent).
- Warning: Only use equivalent fuses to prevent injury or damage. Ensure the multimeter is off before battery installation to avoid damage.
- Troubleshooting: Step-by-step guide to isolate malfunctions, including checking the battery, reviewing operating instructions, inspecting test leads, and checking fuses.
- Cleaning: The front panel and case can be cleaned with a mild solution of detergent and water, applied sparingly with a soft cloth. Aromatic hydrocarbons or chlorinated solvents should not be used.
- Repair: Except for battery and fuse replacement, all repairs should be performed by a Factory Authorized Service Center or qualified instrument service personnel. Warranty and non-warranty repair procedures are detailed, including contact information for Wavetek in the U.S.A., Canada, and Europe.
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