When your multimeter or frequency counter starts giving readings that seem off, you need a reference you can trust to tell whether the instrument is drifting or the circuit is truly misbehaving. Two different calibration helpers tackle this in very different ways: a compact reference board for AD584-based multimeters and a multi-output test equipment calibrator. The decision really comes down to how many instrument types you need to check and how much accuracy you need from the reference itself.
Quick verdict: If you are working with an AD584 multimeter and want a simple reference board for basic checks, the AD584 Resistance Standard fits. If you need to verify voltage, current, frequency, resistance, and capacitance across several instruments, the Frequency Devices TEC-1 Calibration Checker gives you more coverage.
| Attribute | AD584 Resistance Standard Board | Frequency Devices TEC-1 Calibration Checker |
|---|---|---|
| Price | USD 12.98 [ #--------- ] | USD 99.95 |
| Focus | Compact reference board for calibrating AD584 multimeters | Multi-output calibrator for voltmeters, current meters, frequency counters, resistance meters, capacitance meters |
| Outputs | Reference board for AD584 calibration | 5.000 DC volts, 1.000 AC volts RMS, 1.000 mA DC, 1.000 mA RMS 1000 Hz AC, 100 Hz to 100 kHz, 1k/10k/100k ohms, 0.001/0.01/0.1 uF capacitors |
| Country of Origin | China | United States |
| Condition | New | New |
Where the AD584 board wins: If you want a compact reference for an AD584-based multimeter and don't need multiple output types, this green PCB board is the straightforward pick.
Where the Frequency Devices TEC-1 wins: If you need voltage, current, frequency, resistance, and capacitance references, and you prefer a U.S.-made calibrator with values traceable to the National Bureau of Standards, the TEC-1 is the stronger choice.
AD584 Resistance Standard Calibration Test Equipment
The AD584 Resistance Standard Calibration Test Equipment is a compact green PCB reference board sized at 5*3cm. It is specifically aimed at calibrating AD584 multimeters, and its straightforward design lets you align positive and negative poles with the corresponding capacitors to obtain readings. If your work revolves around AD584-based test equipment, this board offers a direct route to a calibration reference. The limitation is scope: this board is a dedicated AD584 reference, while the TEC-1 lists coverage for voltmeters, current meters, frequency counters, and more.
Frequency Devices TEC-1 Calibration Checker
The Frequency Devices TEC-1 Calibration Checker gives you a much broader set of reference values: 5.000 DC volts, 1.000 AC volts RMS, 1.000 mA DC current, 1.000 mA RMS AC current, frequencies from 100 Hz to 100 kHz, 1k/10k/100k ohm resistors, and 0.001/0.01/0.1 uF capacitors. It also comes with measured values traceable to the National Bureau of Standards. Choose it when you need to verify multiple instrument types from one unit. The trade-off to plan around is that each output is a fixed reference value, so the calibration checks you run will center on those points.
Final choice by use case: For a single-purpose AD584 multimeter calibration check, the $12.98 AD584 Resistance Standard Board is the direct choice. For a more complete reference, the $99.95 Frequency Devices TEC-1 offers broader coverage.
