USB-5681 In Stock | Ships in 5-10 Days

National Instruments USB-5681 RF Power Sensor Device

The USB-5681 (part number: 781214-01) from National Instruments is a compact but powerful RF Power Sensor Device. Designed with maximum measurement precision in a conveniently small package, the NI USB-5681 is especially well suited for deployment in mobile applications. The device is capable of operating in two modes: hardware-triggered and software-triggered.

The USB-5681 RF Power Sensor Device is a favorite for wideband applications, as it supports a wide range of frequencies and operates within the frequency ranging of 10 MHz to 18 GHz. The compatible input signal strength for the Power Sensor Device is in the range of – 40 dBm to + 20 dBm. This overall range is categorized in two sub-ranges: +20 dBm to -7 dBm and -7 dBm to -40 dBm for the measurement results. The USB-5681 features a bandwidth support of 50 kHz between signal and channel, and it has a measurement speed of 100 S/s. The typical level of uncertainty in the linearity of the measurements performed by the device is less than 3 %.

The USB-5681 is designed according to the safety standards of IEC 61010-1, EN 61010-1, UL 61010-1, CSA C22.2 No. 61010-1. During operation, the Power Sensor Device requires an input of 5 VDC voltage from the host USB alongside 450 mA of current. The damage protections of the module permit a maximum voltage in the range of ±20 VDC and an absolute power of +30 dBm at the RF port.

Physically, the model weighs in at 0.51 lb (230 g). When the RF connector and silicone cover are removed, the dimensions of USB-5681 measure 25 mm × 45 mm × 110 mm. The environmental specifications are designed to safeguard the device against damage from external factors, and they include an operating temperature range of 0 to 50 °C and a storage temperature range of -40 °C to +71 °C. The relative humidity range suitable for operating conditions depends on the specific temperature. For 50 °C, the noncondensing relative humidity is 45%. It measures at 75% and 95% for 40 °C and 30 °C respectively.

The USB-5681 has been declared Obsolete by National Instruments, but the RF Power Sensor Device will remain available with Apex Waves in perpetuity for both Purchase and Repairs!