National Instruments USB-4065 Digital Multimeter Device

The National Instruments USB-4065 (Part Numbers: 780152-01 and 196824G-01L) is a versatile Digital Multimeter Device that is capable of measuring both AC and DC values. Designed to efficiently measure voltage, current, and resistance, the USB-4065 DMM can also be used for diode testing. The NI USB-4065 boasts measurements with 6.5 digits of resolution, offering incredibly high performance for a wide range of uses in education and OEM applications. A 2.0 USB bus connector supports connections with either hi-speed or full-speed USB 2.0 interfaces. Equipped with both input and output triggers, the logic levels of the input is 5 V TTL, LVTTL. On the other hand, the output triggers support a logic level of 3.3 V. The maximum trigger rate of the NI USB-4065 Digital Multimeter Device is 2.5 kHz.

The USB port of the NI USB-4065 is able to supply the device with power, eliminating the need for an external power source. The input voltage at the USB device ranges from 4.5 V to 5.25 V, and the power requirement for the inrush current is 500 mA maximum. The maximum power requirement for the operating current of the USB-4065 is 400 mA, while the typical power consumption for the suspend current is 500 μA.

Designed for measurement category II, the NI USB-4065 boasts a common-mode voltage that is 300 V ACrms or DC at maximum. Both the AC and DC functionality of the device features range or function changes at a rate of 10/s, with maximum trigger rates of 2.5 kHz.

The input trigger types of the NI USB-4065 are Trigger and Sample Trigger, sampled from an auxiliary I/O connector. This connector is not isolated, and is instead referenced to the ground of the chassis. The output trigger type for the DMM device is Measurement Complete (with a programmable edge). This trigger is also sourced from the Aux I/O connector, and it features a pulse width of 1 μs.

The NI USB-4065 DMM device functions best withing an operating temperature range of 0 to 45 °C, and it has a storage temperature range ranging from -40 °C to 70 °C. The dimensions of the USB-4065 measure 17.8 cm x 10.4 cm x 3.3 cm (7.0 in. × 4.1 in. × 1.3 in.), and it weighs a total of 281 g (9.9 oz).